Extracting prog: 18m0.611178621s
Minimizing prog: 17m54.602929646s
Simplifying prog options: 0s
Extracting C: 22.006444861s
Simplifying C: 13m50.413585446s


extracting reproducer from 24 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
single: failed to extract reproducer
bisect: bisecting 24 programs with base timeout 30s
testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6]
detailed listing:
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x10)
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000002080), 0x42, 0x0)
mount$fuse(0x0, &(0x7f00000042c0)='./file0\x00', &(0x7f0000002100), 0x80c019, &(0x7f00000003c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
read$FUSE(r0, &(0x7f0000008340)={0x2020, 0x0, <r1=>0x0}, 0x2020)
write$FUSE_INIT(r0, &(0x7f0000004200)={0x50, 0xfffffffffffffffe, r1, {0x7, 0x21, 0x3, 0x8000000, 0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}}, 0x50)
openat(0xffffffffffffff9c, &(0x7f00000013c0)='./file0/file0\x00', 0x404c2, 0x0)
executing program 3:
bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000180)={0xffffffffffffffff, 0x2000000, 0xd, 0x0, &(0x7f0000000200)="63eced8e46dc3f0adf33c9f7b9", 0x0, 0x3800, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2}, 0x50)
r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000200)=ANY=[@ANYBLOB="220000000400000010000000"], 0x48)
bpf$BPF_MAP_CONST_STR_FREEZE(0x16, &(0x7f00000000c0)={r0}, 0x4)
sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000440)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a8c"], 0xb4}}, 0x0)
bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x3, 0x8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @sched_cls}, 0x94)
bpf$PROG_LOAD_XDP(0x5, &(0x7f00000003c0)={0x6, 0x5, &(0x7f0000000100)=ANY=[@ANYBLOB="180000000000000000000000000000001850000000000020000000000000000095"], &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x25, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0xfffffff0, 0x0, 0x0, 0x0, &(0x7f0000000080)}, 0x9a)
executing program 2:
r0 = socket$packet(0x11, 0x3, 0x300)
r1 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_fanout(r1, 0x107, 0x12, &(0x7f0000000000)={0x0, 0xb007}, 0x4)
setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f00000000c0)=0xa, 0x4)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'ip6_vti0\x00', <r2=>0x0})
sendto$packet(r0, &(0x7f0000000180)="10031200e0ff020002004788aa96a13bb100001100007fca1a00", 0x1000a, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14)
executing program 3:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000000)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
sendto$inet6(r0, &(0x7f0000000040)='l', 0x1, 0x0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendto$inet6(r0, &(0x7f00000000c0)='5', 0x1, 0x20000000, 0x0, 0x0)
sendto$inet6(r0, &(0x7f0000000300)="a2", 0x1, 0x4805, 0x0, 0x0)
shutdown(r0, 0x1)
executing program 2:
r0 = syz_open_dev$dri(&(0x7f0000000080), 0x1, 0x0)
ioctl$DRM_IOCTL_SET_CLIENT_CAP(r0, 0x4010640d, &(0x7f0000000000)={0x3, 0x2})
ioctl$DRM_IOCTL_MODE_GETPLANERESOURCES(r0, 0xc01064b5, &(0x7f0000000140)={&(0x7f0000000040)=[<r1=>0x0], 0x1})
ioctl$DRM_IOCTL_MODE_GETPLANE(r0, 0xc02064b6, &(0x7f00000001c0)={r1, <r2=>0x0, 0x0, 0x0, 0x0, 0x0, 0x0})
ioctl$DRM_IOCTL_MODE_OBJ_GETPROPERTIES(r0, 0xc02064b9, &(0x7f00000002c0)={&(0x7f0000000240)=[<r3=>0x0, 0x0, <r4=>0x0], &(0x7f0000000040), 0x3, r2})
ioctl$DRM_IOCTL_MODE_ATOMIC(r0, 0xc03864bc, &(0x7f0000000580)={0x0, 0x1, &(0x7f0000000180)=[r2], &(0x7f00000000c0)=[0x3], &(0x7f0000000640)=[r4, r3, r3], &(0x7f0000000340), 0x0, 0xffffffffffffffff})
executing program 3:
r0 = socket$inet6_sctp(0xa, 0x5, 0x84)
r1 = socket$inet6_sctp(0xa, 0x5, 0x84)
shutdown(r1, 0x0)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r1, 0x84, 0x6f, &(0x7f0000000200)={<r2=>0x0, 0x10, &(0x7f00000001c0)=[@in={0x2, 0x4e23, @rand_addr=0x64010100}]}, &(0x7f0000000140)=0x10)
getsockopt$inet_sctp6_SCTP_PRIMARY_ADDR(r1, 0x84, 0x7a, &(0x7f0000000340)={<r3=>r2, @in6={{0xa, 0x3, 0x4, @mcast1}}}, &(0x7f0000000040)=0x84)
getsockopt$inet_sctp6_SCTP_PEER_ADDR_THLDS(r0, 0x84, 0x25, &(0x7f0000000880)={r3, @in6={{0x2, 0x4e22, 0x0, @ipv4={'\x00', '\xff\xff', @multicast1}, 0x4}}, 0x8000, 0x6}, &(0x7f0000000300)=0x90)
executing program 2:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000380)={0x2, 0x4e22, @multicast1}, 0x10)
r1 = socket$inet6_tcp(0xa, 0x1, 0x0)
bind$inet6(r1, &(0x7f0000000140)={0xa, 0xce22, 0x7f, @ipv4={'\x00', '\xff\xff', @multicast1}, 0xffffffff}, 0x1c)
r2 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000100)=[{0x6, 0x3, 0x0, 0x7fff0006}]})
close_range(r2, 0xffffffffffffffff, 0x0)
executing program 3:
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000280)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
setsockopt$SO_ATTACH_FILTER(r1, 0x1, 0x4c, &(0x7f000002eff0)={0x133, &(0x7f0000000000)=[{}]}, 0x10)
recvmmsg(r1, &(0x7f0000007340)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f00000000c0)=""/61, 0x3d}}], 0x1, 0x0, 0x0)
prlimit64(0x0, 0x7, &(0x7f0000000180)={0x1, 0x8}, 0x0)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
sendmmsg$unix(r0, &(0x7f0000000880)=[{{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8050}}], 0x1, 0x4000000)
executing program 2:
r0 = socket$inet_mptcp(0x2, 0x1, 0x106)
setsockopt$inet_tcp_int(r0, 0x6, 0x19, &(0x7f00000001c0)=0x1, 0x4)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e24, @loopback}, 0x10)
setsockopt$inet_tcp_TCP_CONGESTION(r0, 0x6, 0xd, &(0x7f00000000c0)='yeah', 0x4)
sendmmsg$inet(r0, &(0x7f0000004980)=[{{&(0x7f0000000000)={0x2, 0x4e24, @loopback}, 0x10, &(0x7f0000000040)=[{&(0x7f0000000340)="b9cd14", 0x3}], 0x1}}], 0x1, 0x20008000)
setsockopt$inet_tcp_TLS_TX(r0, 0x6, 0x1, &(0x7f0000000080)=@gcm_128={{0x304}, '\x00', "53a8e8ba641839da93589ef68e3aace9", "d6c25a50", "12b78d5d9ab7ce57"}, 0x28)
executing program 3:
r0 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000100)='source\x00', &(0x7f0000000200)='127.0.0.1:6789:/\x00', 0x0)
r1 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r1, 0x1, &(0x7f0000000040)='source\x00', &(0x7f0000000080)='0.0.0.0:0:/\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r1, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
executing program 0:
r0 = bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="02000000040000000800000001"], 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000bc0)={0x6, 0x10, &(0x7f0000000e40)=ANY=[@ANYBLOB="18050000000000000000000000000000b7080000000000007b8af8ff00000000b7080000000000007b8af0ff00000000bfa100000000000007010000f8ffffffbfa400000000000007040000f0ffffffb70200000300000018230000", @ANYRES32=r0, @ANYBLOB="0000000000000000b704000008000000850000001c00000095"], &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback=0x30, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x94)
socket$l2tp(0x2, 0x2, 0x73)
socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = socket(0x10, 0x803, 0x0)
sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000200)=ANY=[@ANYBLOB="a000000010000500000000000000037f00040000", @ANYRES32=r1, @ANYBLOB="0200000000008000800012000800010076746936740002"], 0xa0}, 0x1, 0x0, 0x0, 0x8000}, 0x24040000)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff)
mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0)
mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1)
llistxattr(&(0x7f0000000140)='./file0\x00', &(0x7f0000000000)=""/14, 0xe)
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='1', 0x1)
executing program 1:
sendmsg$ETHTOOL_MSG_STRSET_GET(0xffffffffffffffff, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00', @ANYRES16, @ANYBLOB="0100d0000000fb"], 0x48}, 0x1, 0x0, 0x0, 0x850}, 0x4008800)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x40241, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201})
r1 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1})
write$tun(r0, &(0x7f0000000280)={@val={0x6f01, 0x800}, @val={0x1, 0x0, 0x27, 0x0, 0x27, 0x3afd}, @mpls={[], @ipv4=@tcp={{0x6, 0x4, 0x0, 0x0, 0xfd5e, 0x0, 0x0, 0x0, 0x84, 0x0, @empty=0x3fffff20, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x5, 0xb, 0x0, 0x700, 0x0, 0x18, {[@window={0x9, 0xfffffffffffffec4}, @timestamp={0x5, 0x2, 0xffffff07, 0xffc1}, @generic={0x0, 0x2, "d588380003c1"}]}}}}}}, 0xfd6c)
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)=ANY=[@ANYBLOB="12010000000000105509147200ed0000000109022400010000000009040000030300000009210000000122050009058103"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, &(0x7f0000000100)={0x2c, &(0x7f0000000280)=ANY=[@ANYBLOB=' mO'], 0x0, 0x0, 0x0, 0x0}, 0x0)
sendmsg$ETHTOOL_MSG_WOL_SET(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000740)=ANY=[@ANYBLOB="1c000000", @ANYRES16, @ANYBLOB="470d000000000000000000000000080002"], 0x1c}}, 0x0)
r1 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10)
sendmsg$netlink(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f0000000740)=ANY=[@ANYBLOB="14020000140001002dbd7000000000000a"], 0x214}], 0x1}, 0x0)
executing program 1:
openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x40, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x100)
mkdir(&(0x7f0000000000)='./bus\x00', 0x0)
mkdir(&(0x7f0000000080)='./file0/file1\x00', 0x10b)
mount$overlay(0x0, &(0x7f0000000240)='./file0\x00', &(0x7f0000000b80), 0x8, &(0x7f0000000040)={[{@upperdir={'upperdir', 0x3d, './file0'}}, {@lowerdir={'lowerdir', 0x3d, '.'}}, {@workdir={'workdir', 0x3d, './bus'}}]})
rmdir(&(0x7f0000000200)='./file0/file1\x00')
executing program 1:
r0 = openat$iommufd(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
ioctl$IOMMU_OPTION$IOMMU_OPTION_RLIMIT_MODE(r0, 0x3b87, &(0x7f0000000180)={0x18, 0x0, 0x0, 0x0, 0x0, 0x1})
ioctl$IOMMU_IOAS_ALLOC(r0, 0x3b81, &(0x7f0000000400)={0xc, 0x0, <r1=>0x0})
ioctl$IOMMU_TEST_OP_MOCK_DOMAIN_FLAGS(r0, 0x3ba0, &(0x7f00000001c0)={0x48, 0x2, r1, 0x0, 0x0, 0x0, 0x0, 0x1})
capset(&(0x7f0000000000)={0x20080522}, &(0x7f0000000280)={0x0, 0x0, 0x0, 0x81, 0xffffffff})
ioctl$IOMMU_IOAS_MAP$PAGES(r0, 0x3b85, &(0x7f0000000140)={0x28, 0x6, r1, 0x0, &(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x800})
executing program 1:
r0 = openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000002c0), 0x2, 0x0)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r0, 0x4008af60, &(0x7f0000001500)={@my=0x1})
r1 = socket$vsock_stream(0x28, 0x1, 0x0)
connect$vsock_stream(r1, &(0x7f0000000200)={0x28, 0x0, 0xffffffff, @my=0x1}, 0x10)
close(0x3)
setsockopt$SO_VM_SOCKETS_BUFFER_MAX_SIZE(r1, 0x28, 0x2, &(0x7f0000000080)=0xa1, 0x8)
executing program 2:
r0 = socket(0x10, 0x2, 0x0)
r1 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_fanout(r1, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
r2 = socket$packet(0x11, 0x2, 0x300)
setsockopt$packet_fanout(r2, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
close_range(r0, 0xffffffffffffffff, 0x0)
executing program 1:
r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000000)={0x1, &(0x7f0000000100)=[{0x6, 0x8, 0x94, 0x7fff0000}]})
close_range(r0, 0xffffffffffffffff, 0x0)
io_uring_setup(0x498f, &(0x7f0000000240)={0x0, 0x27b, 0x1, 0x3, 0x3c4})
connect$vsock_stream(0xffffffffffffffff, &(0x7f0000000000)={0x28, 0x0, 0x0, @hyper}, 0x10)
mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x5)
io_uring_register$IORING_REGISTER_FILES(0xffffffffffffffff, 0x1f, &(0x7f0000000000)=[0xffffffffffffffff], 0x1)
executing program 1:
r0 = fsopen(&(0x7f0000000280)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000b40)='source', &(0x7f0000000040)='c:::\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_SET_FLAG(r0, 0x0, &(0x7f0000000140)='lazytime\x00', 0x0, 0x0)
r1 = landlock_create_ruleset(&(0x7f0000000040)={0x2b, 0x1}, 0x18, 0x0)
landlock_restrict_self(r1, 0xa)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: bisecting 24 programs
bisect: split chunks (needed=false): <23>
bisect: split chunk #0 of len 23 into 3 parts
bisect: testing without sub-chunk 1/3
testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6]
detailed listing:
executing program 2:
r0 = socket$inet_mptcp(0x2, 0x1, 0x106)
setsockopt$inet_tcp_int(r0, 0x6, 0x19, &(0x7f00000001c0)=0x1, 0x4)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e24, @loopback}, 0x10)
setsockopt$inet_tcp_TCP_CONGESTION(r0, 0x6, 0xd, &(0x7f00000000c0)='yeah', 0x4)
sendmmsg$inet(r0, &(0x7f0000004980)=[{{&(0x7f0000000000)={0x2, 0x4e24, @loopback}, 0x10, &(0x7f0000000040)=[{&(0x7f0000000340)="b9cd14", 0x3}], 0x1}}], 0x1, 0x20008000)
setsockopt$inet_tcp_TLS_TX(r0, 0x6, 0x1, &(0x7f0000000080)=@gcm_128={{0x304}, '\x00', "53a8e8ba641839da93589ef68e3aace9", "d6c25a50", "12b78d5d9ab7ce57"}, 0x28)
executing program 3:
r0 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000100)='source\x00', &(0x7f0000000200)='127.0.0.1:6789:/\x00', 0x0)
r1 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r1, 0x1, &(0x7f0000000040)='source\x00', &(0x7f0000000080)='0.0.0.0:0:/\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r1, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
executing program 0:
r0 = bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="02000000040000000800000001"], 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000bc0)={0x6, 0x10, &(0x7f0000000e40)=ANY=[@ANYBLOB="18050000000000000000000000000000b7080000000000007b8af8ff00000000b7080000000000007b8af0ff00000000bfa100000000000007010000f8ffffffbfa400000000000007040000f0ffffffb70200000300000018230000", @ANYRES32=r0, @ANYBLOB="0000000000000000b704000008000000850000001c00000095"], &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback=0x30, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x94)
socket$l2tp(0x2, 0x2, 0x73)
socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = socket(0x10, 0x803, 0x0)
sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000200)=ANY=[@ANYBLOB="a000000010000500000000000000037f00040000", @ANYRES32=r1, @ANYBLOB="0200000000008000800012000800010076746936740002"], 0xa0}, 0x1, 0x0, 0x0, 0x8000}, 0x24040000)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff)
mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0)
mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1)
llistxattr(&(0x7f0000000140)='./file0\x00', &(0x7f0000000000)=""/14, 0xe)
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='1', 0x1)
executing program 1:
sendmsg$ETHTOOL_MSG_STRSET_GET(0xffffffffffffffff, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00', @ANYRES16, @ANYBLOB="0100d0000000fb"], 0x48}, 0x1, 0x0, 0x0, 0x850}, 0x4008800)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x40241, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201})
r1 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1})
write$tun(r0, &(0x7f0000000280)={@val={0x6f01, 0x800}, @val={0x1, 0x0, 0x27, 0x0, 0x27, 0x3afd}, @mpls={[], @ipv4=@tcp={{0x6, 0x4, 0x0, 0x0, 0xfd5e, 0x0, 0x0, 0x0, 0x84, 0x0, @empty=0x3fffff20, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x5, 0xb, 0x0, 0x700, 0x0, 0x18, {[@window={0x9, 0xfffffffffffffec4}, @timestamp={0x5, 0x2, 0xffffff07, 0xffc1}, @generic={0x0, 0x2, "d588380003c1"}]}}}}}}, 0xfd6c)
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)=ANY=[@ANYBLOB="12010000000000105509147200ed0000000109022400010000000009040000030300000009210000000122050009058103"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, &(0x7f0000000100)={0x2c, &(0x7f0000000280)=ANY=[@ANYBLOB=' mO'], 0x0, 0x0, 0x0, 0x0}, 0x0)
sendmsg$ETHTOOL_MSG_WOL_SET(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000740)=ANY=[@ANYBLOB="1c000000", @ANYRES16, @ANYBLOB="470d000000000000000000000000080002"], 0x1c}}, 0x0)
r1 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10)
sendmsg$netlink(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f0000000740)=ANY=[@ANYBLOB="14020000140001002dbd7000000000000a"], 0x214}], 0x1}, 0x0)
executing program 1:
openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x40, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x100)
mkdir(&(0x7f0000000000)='./bus\x00', 0x0)
mkdir(&(0x7f0000000080)='./file0/file1\x00', 0x10b)
mount$overlay(0x0, &(0x7f0000000240)='./file0\x00', &(0x7f0000000b80), 0x8, &(0x7f0000000040)={[{@upperdir={'upperdir', 0x3d, './file0'}}, {@lowerdir={'lowerdir', 0x3d, '.'}}, {@workdir={'workdir', 0x3d, './bus'}}]})
rmdir(&(0x7f0000000200)='./file0/file1\x00')
executing program 1:
r0 = openat$iommufd(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
ioctl$IOMMU_OPTION$IOMMU_OPTION_RLIMIT_MODE(r0, 0x3b87, &(0x7f0000000180)={0x18, 0x0, 0x0, 0x0, 0x0, 0x1})
ioctl$IOMMU_IOAS_ALLOC(r0, 0x3b81, &(0x7f0000000400)={0xc, 0x0, <r1=>0x0})
ioctl$IOMMU_TEST_OP_MOCK_DOMAIN_FLAGS(r0, 0x3ba0, &(0x7f00000001c0)={0x48, 0x2, r1, 0x0, 0x0, 0x0, 0x0, 0x1})
capset(&(0x7f0000000000)={0x20080522}, &(0x7f0000000280)={0x0, 0x0, 0x0, 0x81, 0xffffffff})
ioctl$IOMMU_IOAS_MAP$PAGES(r0, 0x3b85, &(0x7f0000000140)={0x28, 0x6, r1, 0x0, &(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x800})
executing program 1:
r0 = openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000002c0), 0x2, 0x0)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r0, 0x4008af60, &(0x7f0000001500)={@my=0x1})
r1 = socket$vsock_stream(0x28, 0x1, 0x0)
connect$vsock_stream(r1, &(0x7f0000000200)={0x28, 0x0, 0xffffffff, @my=0x1}, 0x10)
close(0x3)
setsockopt$SO_VM_SOCKETS_BUFFER_MAX_SIZE(r1, 0x28, 0x2, &(0x7f0000000080)=0xa1, 0x8)
executing program 2:
r0 = socket(0x10, 0x2, 0x0)
r1 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_fanout(r1, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
r2 = socket$packet(0x11, 0x2, 0x300)
setsockopt$packet_fanout(r2, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
close_range(r0, 0xffffffffffffffff, 0x0)
executing program 1:
r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000000)={0x1, &(0x7f0000000100)=[{0x6, 0x8, 0x94, 0x7fff0000}]})
close_range(r0, 0xffffffffffffffff, 0x0)
io_uring_setup(0x498f, &(0x7f0000000240)={0x0, 0x27b, 0x1, 0x3, 0x3c4})
connect$vsock_stream(0xffffffffffffffff, &(0x7f0000000000)={0x28, 0x0, 0x0, @hyper}, 0x10)
mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x5)
io_uring_register$IORING_REGISTER_FILES(0xffffffffffffffff, 0x1f, &(0x7f0000000000)=[0xffffffffffffffff], 0x1)
executing program 1:
r0 = fsopen(&(0x7f0000000280)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000b40)='source', &(0x7f0000000040)='c:::\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_SET_FLAG(r0, 0x0, &(0x7f0000000140)='lazytime\x00', 0x0, 0x0)
r1 = landlock_create_ruleset(&(0x7f0000000040)={0x2b, 0x1}, 0x18, 0x0)
landlock_restrict_self(r1, 0xa)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/3
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6, 6, 6, 6, 6, 6]
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000080)=ANY=[@ANYBLOB="12010000000000105509147200ed0000000109022400010000000009040000030300000009210000000122050009058103"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, &(0x7f0000000100)={0x2c, &(0x7f0000000280)=ANY=[@ANYBLOB=' mO'], 0x0, 0x0, 0x0, 0x0}, 0x0)
sendmsg$ETHTOOL_MSG_WOL_SET(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000740)=ANY=[@ANYBLOB="1c000000", @ANYRES16, @ANYBLOB="470d000000000000000000000000080002"], 0x1c}}, 0x0)
r1 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10)
sendmsg$netlink(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f0000000740)=ANY=[@ANYBLOB="14020000140001002dbd7000000000000a"], 0x214}], 0x1}, 0x0)
executing program 1:
openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x40, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./file0\x00', 0x100)
mkdir(&(0x7f0000000000)='./bus\x00', 0x0)
mkdir(&(0x7f0000000080)='./file0/file1\x00', 0x10b)
mount$overlay(0x0, &(0x7f0000000240)='./file0\x00', &(0x7f0000000b80), 0x8, &(0x7f0000000040)={[{@upperdir={'upperdir', 0x3d, './file0'}}, {@lowerdir={'lowerdir', 0x3d, '.'}}, {@workdir={'workdir', 0x3d, './bus'}}]})
rmdir(&(0x7f0000000200)='./file0/file1\x00')
executing program 1:
r0 = openat$iommufd(0xffffffffffffff9c, &(0x7f00000000c0), 0x0, 0x0)
ioctl$IOMMU_OPTION$IOMMU_OPTION_RLIMIT_MODE(r0, 0x3b87, &(0x7f0000000180)={0x18, 0x0, 0x0, 0x0, 0x0, 0x1})
ioctl$IOMMU_IOAS_ALLOC(r0, 0x3b81, &(0x7f0000000400)={0xc, 0x0, <r1=>0x0})
ioctl$IOMMU_TEST_OP_MOCK_DOMAIN_FLAGS(r0, 0x3ba0, &(0x7f00000001c0)={0x48, 0x2, r1, 0x0, 0x0, 0x0, 0x0, 0x1})
capset(&(0x7f0000000000)={0x20080522}, &(0x7f0000000280)={0x0, 0x0, 0x0, 0x81, 0xffffffff})
ioctl$IOMMU_IOAS_MAP$PAGES(r0, 0x3b85, &(0x7f0000000140)={0x28, 0x6, r1, 0x0, &(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x800})
executing program 1:
r0 = openat$vhost_vsock(0xffffffffffffff9c, &(0x7f00000002c0), 0x2, 0x0)
ioctl$VHOST_VSOCK_SET_GUEST_CID(r0, 0x4008af60, &(0x7f0000001500)={@my=0x1})
r1 = socket$vsock_stream(0x28, 0x1, 0x0)
connect$vsock_stream(r1, &(0x7f0000000200)={0x28, 0x0, 0xffffffff, @my=0x1}, 0x10)
close(0x3)
setsockopt$SO_VM_SOCKETS_BUFFER_MAX_SIZE(r1, 0x28, 0x2, &(0x7f0000000080)=0xa1, 0x8)
executing program 2:
r0 = socket(0x10, 0x2, 0x0)
r1 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_fanout(r1, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
r2 = socket$packet(0x11, 0x2, 0x300)
setsockopt$packet_fanout(r2, 0x107, 0x12, &(0x7f00000000c0)={0x3, 0x1000}, 0x4)
close_range(r0, 0xffffffffffffffff, 0x0)
executing program 1:
r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000000)={0x1, &(0x7f0000000100)=[{0x6, 0x8, 0x94, 0x7fff0000}]})
close_range(r0, 0xffffffffffffffff, 0x0)
io_uring_setup(0x498f, &(0x7f0000000240)={0x0, 0x27b, 0x1, 0x3, 0x3c4})
connect$vsock_stream(0xffffffffffffffff, &(0x7f0000000000)={0x28, 0x0, 0x0, @hyper}, 0x10)
mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x5)
io_uring_register$IORING_REGISTER_FILES(0xffffffffffffffff, 0x1f, &(0x7f0000000000)=[0xffffffffffffffff], 0x1)
executing program 1:
r0 = fsopen(&(0x7f0000000280)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000b40)='source', &(0x7f0000000040)='c:::\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_SET_FLAG(r0, 0x0, &(0x7f0000000140)='lazytime\x00', 0x0, 0x0)
r1 = landlock_create_ruleset(&(0x7f0000000040)={0x2b, 0x1}, 0x18, 0x0)
landlock_restrict_self(r1, 0xa)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
bisect: testing without sub-chunk 3/3
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6, 6, 6, 6, 6, 6, 6]
detailed listing:
executing program 2:
r0 = socket$inet_mptcp(0x2, 0x1, 0x106)
setsockopt$inet_tcp_int(r0, 0x6, 0x19, &(0x7f00000001c0)=0x1, 0x4)
bind$inet(r0, &(0x7f0000000100)={0x2, 0x4e24, @loopback}, 0x10)
setsockopt$inet_tcp_TCP_CONGESTION(r0, 0x6, 0xd, &(0x7f00000000c0)='yeah', 0x4)
sendmmsg$inet(r0, &(0x7f0000004980)=[{{&(0x7f0000000000)={0x2, 0x4e24, @loopback}, 0x10, &(0x7f0000000040)=[{&(0x7f0000000340)="b9cd14", 0x3}], 0x1}}], 0x1, 0x20008000)
setsockopt$inet_tcp_TLS_TX(r0, 0x6, 0x1, &(0x7f0000000080)=@gcm_128={{0x304}, '\x00', "53a8e8ba641839da93589ef68e3aace9", "d6c25a50", "12b78d5d9ab7ce57"}, 0x28)
executing program 3:
r0 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000100)='source\x00', &(0x7f0000000200)='127.0.0.1:6789:/\x00', 0x0)
r1 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r1, 0x1, &(0x7f0000000040)='source\x00', &(0x7f0000000080)='0.0.0.0:0:/\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r1, 0x6, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
executing program 0:
r0 = bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="02000000040000000800000001"], 0x48)
bpf$PROG_LOAD(0x5, &(0x7f0000000bc0)={0x6, 0x10, &(0x7f0000000e40)=ANY=[@ANYBLOB="18050000000000000000000000000000b7080000000000007b8af8ff00000000b7080000000000007b8af0ff00000000bfa100000000000007010000f8ffffffbfa400000000000007040000f0ffffffb70200000300000018230000", @ANYRES32=r0, @ANYBLOB="0000000000000000b704000008000000850000001c00000095"], &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback=0x30, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}, 0x94)
socket$l2tp(0x2, 0x2, 0x73)
socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = socket(0x10, 0x803, 0x0)
sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000200)=ANY=[@ANYBLOB="a000000010000500000000000000037f00040000", @ANYRES32=r1, @ANYBLOB="0200000000008000800012000800010076746936740002"], 0xa0}, 0x1, 0x0, 0x0, 0x8000}, 0x24040000)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./mnt\x00', 0x1ff)
mount(&(0x7f00000000c0)=@filename='./dev/sda1\x00', &(0x7f0000000140)='./mnt\x00', &(0x7f0000000100)='ext4\x00', 0x8410, 0x0)
mprotect(&(0x7f0000000000/0xf000)=nil, 0xf000, 0x1)
llistxattr(&(0x7f0000000140)='./file0\x00', &(0x7f0000000000)=""/14, 0xe)
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='1', 0x1)
executing program 1:
sendmsg$ETHTOOL_MSG_STRSET_GET(0xffffffffffffffff, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00', @ANYRES16, @ANYBLOB="0100d0000000fb"], 0x48}, 0x1, 0x0, 0x0, 0x850}, 0x4008800)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x40241, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201})
r1 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1})
write$tun(r0, &(0x7f0000000280)={@val={0x6f01, 0x800}, @val={0x1, 0x0, 0x27, 0x0, 0x27, 0x3afd}, @mpls={[], @ipv4=@tcp={{0x6, 0x4, 0x0, 0x0, 0xfd5e, 0x0, 0x0, 0x0, 0x84, 0x0, @empty=0x3fffff20, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x5, 0xb, 0x0, 0x700, 0x0, 0x18, {[@window={0x9, 0xfffffffffffffec4}, @timestamp={0x5, 0x2, 0xffffff07, 0xffc1}, @generic={0x0, 0x2, "d588380003c1"}]}}}}}}, 0xfd6c)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <8>
bisect: split chunk #0 of len 8 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6, 6, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='1', 0x1)
executing program 1:
sendmsg$ETHTOOL_MSG_STRSET_GET(0xffffffffffffffff, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00', @ANYRES16, @ANYBLOB="0100d0000000fb"], 0x48}, 0x1, 0x0, 0x0, 0x850}, 0x4008800)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x40241, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201})
r1 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1})
write$tun(r0, &(0x7f0000000280)={@val={0x6f01, 0x800}, @val={0x1, 0x0, 0x27, 0x0, 0x27, 0x3afd}, @mpls={[], @ipv4=@tcp={{0x6, 0x4, 0x0, 0x0, 0xfd5e, 0x0, 0x0, 0x0, 0x84, 0x0, @empty=0x3fffff20, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x5, 0xb, 0x0, 0x700, 0x0, 0x18, {[@window={0x9, 0xfffffffffffffec4}, @timestamp={0x5, 0x2, 0xffffff07, 0xffc1}, @generic={0x0, 0x2, "d588380003c1"}]}}}}}}, 0xfd6c)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/2
bisect: no need to test this chunk, it's definitely needed
bisect: split chunks (needed=true): <4>
bisect: split chunk #0 of len 4 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6]
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/devices/system/cpu/cpu1/online\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='1', 0x1)
executing program 1:
sendmsg$ETHTOOL_MSG_STRSET_GET(0xffffffffffffffff, &(0x7f0000000840)={0x0, 0x0, &(0x7f0000000800)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00', @ANYRES16, @ANYBLOB="0100d0000000fb"], 0x48}, 0x1, 0x0, 0x0, 0x850}, 0x4008800)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x40241, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201})
r1 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'syzkaller1\x00', 0x1})
write$tun(r0, &(0x7f0000000280)={@val={0x6f01, 0x800}, @val={0x1, 0x0, 0x27, 0x0, 0x27, 0x3afd}, @mpls={[], @ipv4=@tcp={{0x6, 0x4, 0x0, 0x0, 0xfd5e, 0x0, 0x0, 0x0, 0x84, 0x0, @empty=0x3fffff20, @local}, {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x5, 0xb, 0x0, 0x700, 0x0, 0x18, {[@window={0x9, 0xfffffffffffffec4}, @timestamp={0x5, 0x2, 0xffffff07, 0xffc1}, @generic={0x0, 0x2, "d588380003c1"}]}}}}}}, 0xfd6c)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <2>
bisect: split chunk #0 of len 2 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6]
detailed listing:
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000280)=[@in={0x2, 0x4e21, @loopback}], 0x10)
sendmsg$inet_sctp(r0, &(0x7f0000000700)={&(0x7f0000000340)=@in={0x2, 0x4e21, @loopback}, 0x10, &(0x7f0000000080)=[{&(0x7f0000000380)="ec", 0x1}], 0x1, 0x0, 0x0, 0x40001}, 0x881)
r1 = dup(r0)
writev(r1, &(0x7f0000000300)=[{&(0x7f0000000240)="04", 0x1}], 0x1)
write$RDMA_USER_CM_CMD_RESOLVE_ROUTE(r1, &(0x7f0000000180)={0x4, 0xffffff95, 0xfa00, {0xffffffffffffffff, 0x4}}, 0x29fdf)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [6, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <1>
bisect: split chunk #0 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: 2 programs left: 

executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)


bisect: trying to concatenate
bisect: concatenate 2 entries
minimizing program #0 before concatenation
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
setsockopt$inet6_IPV6_HOPOPTS(r0, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(r0, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 6]
detailed listing:
executing program 0:
sendmsg$OSF_MSG_REMOVE(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, 0x1, 0x5, 0x101, 0x0, 0x0, {0x2}}, 0x14}, 0x1, 0x0, 0x0, 0x4008051}, 0x0)
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 6]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 2:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
minimized 6 calls -> 4 calls
minimizing program #1 before concatenation
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_int(r0, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [4, 5]
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
executing program 0:
preadv(0xffffffffffffffff, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_int(r0, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
minimized 6 calls -> 6 calls
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
bisect: concatenation succeeded
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
write$cgroup_subtree(0xffffffffffffffff, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_int(0xffffffffffffffff, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_int(r0, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-write-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
preadv(0xffffffffffffffff, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r1 = openat$cgroup_int(r0, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r1, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-setsockopt$SO_BINDTODEVICE-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-connect$inet6-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
connect$inet6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x5}, 0x1c)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, 0x0, 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f00000000c0)="8f2a0a65bd8c002b0304000e0580a7b6070d63e286a5cefe", 0x5ac)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, 0x0)
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, 0x0, 0x0, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{0x0}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, 0x0, 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, 0x0, 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, 0x0, 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, 0x0, 0x6a)

program did not crash
extracting C reproducer
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
simplifying C reproducer
testing compiled C program (duration=45s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program crashed: possible deadlock in blkg_conf_prep
testing compiled C program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
program did not crash
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
validation run: crashed=false
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
validation run: crashed=true
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
validation run: crashed=true
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
validation run: crashed=false
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
validation run: crashed=false
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program did not crash
validation run: crashed=false
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet6_IPV6_HOPOPTS-setsockopt$SO_BINDTODEVICE-write-syz_open_procfs-preadv-mkdirat$cgroup_root-openat$cgroup_root-openat$cgroup_int-write$cgroup_subtree
detailed listing:
executing program 0:
setsockopt$inet6_IPV6_HOPOPTS(0xffffffffffffffff, 0x29, 0x36, &(0x7f0000000400)=ANY=[], 0x8)
setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000240)='bridge0\x00', 0x10)
write(0xffffffffffffffff, &(0x7f00000000c0), 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/vlan/vlan0\x00')
preadv(r0, &(0x7f0000000300)=[{&(0x7f0000000000)=""/196, 0xc4}], 0x1, 0xa3, 0x0)
mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup.net/syz1\x00', 0x1ff)
r1 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0)
r2 = openat$cgroup_int(r1, &(0x7f00000002c0)='blkio.throttle.write_iops_device\x00', 0x2, 0x0)
write$cgroup_subtree(r2, &(0x7f00000000c0)=ANY=[], 0x6a)

program crashed: possible deadlock in blkg_conf_prep
validation run: crashed=true
reproducing took 55m13.650511s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.1.18/6027 is trying to acquire lock:
ffffffff8efc6c00
 (
fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:314 [inline]
fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook mm/slub.c:4539 [inline]
fs_reclaim){+.+.}-{0:0}, at: slab_alloc_node mm/slub.c:4899 [inline]
fs_reclaim){+.+.}-{0:0}, at: kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933

but task is already holding lock:
ffff888028683bc0 (&q->blkcg_mutex){+.+.}-{4:4}, at: blkg_conf_prep+0xbc/0xf10 block/blk-cgroup.c:849

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&q->blkcg_mutex){+.+.}-{4:4}:
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       __mutex_lock_common kernel/locking/mutex.c:646 [inline]
       __mutex_lock+0x1a4/0x1bc0 kernel/locking/mutex.c:821
       blkcg_activate_policy+0x34f/0xbf0 block/blk-cgroup.c:1608
       blk_throtl_init+0x39a/0x5b0 block/blk-throttle.c:1339
       tg_set_conf.isra.0+0x252/0x500 block/blk-throttle.c:1368
       cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
       kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
       new_sync_write fs/read_write.c:595 [inline]
       vfs_write+0x6af/0x1050 fs/read_write.c:687
       ksys_write+0x12a/0x250 fs/read_write.c:739
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&q->q_usage_counter(io)#17){++++}-{0:0}:
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       blk_alloc_queue+0x610/0x790 block/blk-core.c:504
       blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4420
       __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4467
       loop_add+0x498/0xb60 drivers/block/loop.c:2071
       loop_init+0x1d3/0x200 drivers/block/loop.c:2310
       do_one_initcall+0x11c/0x6f0 init/main.c:1353
       do_initcall_level init/main.c:1415 [inline]
       do_initcalls init/main.c:1431 [inline]
       do_basic_setup init/main.c:1451 [inline]
       kernel_init_freeable+0x6ea/0x7b0 init/main.c:1666
       kernel_init+0x21/0x1e0 init/main.c:1556
       ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

-> #0 (fs_reclaim){+.+.}-{0:0}:
       check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3181
       check_prevs_add kernel/locking/lockdep.c:3300 [inline]
       validate_chain kernel/locking/lockdep.c:3924 [inline]
       __lock_acquire+0x1492/0x1ec0 kernel/locking/lockdep.c:5253
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       __fs_reclaim_acquire mm/page_alloc.c:4375 [inline]
       fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4389
       might_alloc include/linux/sched/mm.h:314 [inline]
       slab_pre_alloc_hook mm/slub.c:4539 [inline]
       slab_alloc_node mm/slub.c:4899 [inline]
       kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933
       __radix_tree_preload+0x333/0x820 lib/radix-tree.c:338
       blkg_conf_prep+0x489/0xf10 block/blk-cgroup.c:885
       tg_set_conf.isra.0+0x1ed/0x500 block/blk-throttle.c:1373
       cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
       kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
       new_sync_write fs/read_write.c:595 [inline]
       vfs_write+0x6af/0x1050 fs/read_write.c:687
       ksys_write+0x12a/0x250 fs/read_write.c:739
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  fs_reclaim --> &q->q_usage_counter(io)#17 --> &q->blkcg_mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&q->blkcg_mutex);
                               lock(&q->q_usage_counter(io)#17);
                               lock(&q->blkcg_mutex);
  lock(fs_reclaim);

 *** DEADLOCK ***

locks held by syz.1.18/6027: 6, last CPU#3:
 #0: ffff888035cc8b70 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2aa/0x380 fs/file.c:1259
 #1: ffff8880372a4460 (sb_writers#11){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:739
 #2: ffff888037174c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x2c2/0x5f0 fs/kernfs/file.c:336
 #3: ffff8880534200f8 (kn->active#66){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #3: ffff8880534200f8 (kn->active#66){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x332/0x5f0 fs/kernfs/file.c:337
 #4: ffff888028683a40 (&q->rq_qos_mutex){+.+.}-{4:4}, at: blkg_conf_open_bdev+0x253/0x410 block/blk-cgroup.c:806
 #5: ffff888028683bc0 (&q->blkcg_mutex){+.+.}-{4:4}, at: blkg_conf_prep+0xbc/0xf10 block/blk-cgroup.c:849

stack backtrace:
CPU: 3 UID: 0 PID: 6027 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_circular_bug.cold+0x178/0x1be kernel/locking/lockdep.c:2059
 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2191
 check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3181
 check_prevs_add kernel/locking/lockdep.c:3300 [inline]
 validate_chain kernel/locking/lockdep.c:3924 [inline]
 __lock_acquire+0x1492/0x1ec0 kernel/locking/lockdep.c:5253
 lock_acquire kernel/locking/lockdep.c:5886 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
 __fs_reclaim_acquire mm/page_alloc.c:4375 [inline]
 fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4389
 might_alloc include/linux/sched/mm.h:314 [inline]
 slab_pre_alloc_hook mm/slub.c:4539 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933
 __radix_tree_preload+0x333/0x820 lib/radix-tree.c:338
 blkg_conf_prep+0x489/0xf10 block/blk-cgroup.c:885
 tg_set_conf.isra.0+0x1ed/0x500 block/blk-throttle.c:1373
 cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7b6519e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7b66080028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7b65425fa0 RCX: 00007f7b6519e159
RDX: 000000000000006a RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f7b65235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7b65426038 R14: 00007f7b65425fa0 R15: 00007ffc8680c158
 </TASK>

final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.1.18/6027 is trying to acquire lock:
ffffffff8efc6c00
 (
fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:314 [inline]
fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook mm/slub.c:4539 [inline]
fs_reclaim){+.+.}-{0:0}, at: slab_alloc_node mm/slub.c:4899 [inline]
fs_reclaim){+.+.}-{0:0}, at: kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933

but task is already holding lock:
ffff888028683bc0 (&q->blkcg_mutex){+.+.}-{4:4}, at: blkg_conf_prep+0xbc/0xf10 block/blk-cgroup.c:849

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&q->blkcg_mutex){+.+.}-{4:4}:
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       __mutex_lock_common kernel/locking/mutex.c:646 [inline]
       __mutex_lock+0x1a4/0x1bc0 kernel/locking/mutex.c:821
       blkcg_activate_policy+0x34f/0xbf0 block/blk-cgroup.c:1608
       blk_throtl_init+0x39a/0x5b0 block/blk-throttle.c:1339
       tg_set_conf.isra.0+0x252/0x500 block/blk-throttle.c:1368
       cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
       kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
       new_sync_write fs/read_write.c:595 [inline]
       vfs_write+0x6af/0x1050 fs/read_write.c:687
       ksys_write+0x12a/0x250 fs/read_write.c:739
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&q->q_usage_counter(io)#17){++++}-{0:0}:
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       blk_alloc_queue+0x610/0x790 block/blk-core.c:504
       blk_mq_alloc_queue+0x174/0x290 block/blk-mq.c:4420
       __blk_mq_alloc_disk+0x29/0x120 block/blk-mq.c:4467
       loop_add+0x498/0xb60 drivers/block/loop.c:2071
       loop_init+0x1d3/0x200 drivers/block/loop.c:2310
       do_one_initcall+0x11c/0x6f0 init/main.c:1353
       do_initcall_level init/main.c:1415 [inline]
       do_initcalls init/main.c:1431 [inline]
       do_basic_setup init/main.c:1451 [inline]
       kernel_init_freeable+0x6ea/0x7b0 init/main.c:1666
       kernel_init+0x21/0x1e0 init/main.c:1556
       ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

-> #0 (fs_reclaim){+.+.}-{0:0}:
       check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3181
       check_prevs_add kernel/locking/lockdep.c:3300 [inline]
       validate_chain kernel/locking/lockdep.c:3924 [inline]
       __lock_acquire+0x1492/0x1ec0 kernel/locking/lockdep.c:5253
       lock_acquire kernel/locking/lockdep.c:5886 [inline]
       lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
       __fs_reclaim_acquire mm/page_alloc.c:4375 [inline]
       fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4389
       might_alloc include/linux/sched/mm.h:314 [inline]
       slab_pre_alloc_hook mm/slub.c:4539 [inline]
       slab_alloc_node mm/slub.c:4899 [inline]
       kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933
       __radix_tree_preload+0x333/0x820 lib/radix-tree.c:338
       blkg_conf_prep+0x489/0xf10 block/blk-cgroup.c:885
       tg_set_conf.isra.0+0x1ed/0x500 block/blk-throttle.c:1373
       cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
       kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
       new_sync_write fs/read_write.c:595 [inline]
       vfs_write+0x6af/0x1050 fs/read_write.c:687
       ksys_write+0x12a/0x250 fs/read_write.c:739
       do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
       do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  fs_reclaim --> &q->q_usage_counter(io)#17 --> &q->blkcg_mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&q->blkcg_mutex);
                               lock(&q->q_usage_counter(io)#17);
                               lock(&q->blkcg_mutex);
  lock(fs_reclaim);

 *** DEADLOCK ***

locks held by syz.1.18/6027: 6, last CPU#3:
 #0: ffff888035cc8b70 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x2aa/0x380 fs/file.c:1259
 #1: ffff8880372a4460 (sb_writers#11){.+.+}-{0:0}, at: ksys_write+0x12a/0x250 fs/read_write.c:739
 #2: ffff888037174c80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x2c2/0x5f0 fs/kernfs/file.c:336
 #3: ffff8880534200f8 (kn->active#66){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
 #3: ffff8880534200f8 (kn->active#66){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x332/0x5f0 fs/kernfs/file.c:337
 #4: ffff888028683a40 (&q->rq_qos_mutex){+.+.}-{4:4}, at: blkg_conf_open_bdev+0x253/0x410 block/blk-cgroup.c:806
 #5: ffff888028683bc0 (&q->blkcg_mutex){+.+.}-{4:4}, at: blkg_conf_prep+0xbc/0xf10 block/blk-cgroup.c:849

stack backtrace:
CPU: 3 UID: 0 PID: 6027 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_circular_bug.cold+0x178/0x1be kernel/locking/lockdep.c:2059
 check_noncircular+0x146/0x160 kernel/locking/lockdep.c:2191
 check_prev_add+0xeb/0xe60 kernel/locking/lockdep.c:3181
 check_prevs_add kernel/locking/lockdep.c:3300 [inline]
 validate_chain kernel/locking/lockdep.c:3924 [inline]
 __lock_acquire+0x1492/0x1ec0 kernel/locking/lockdep.c:5253
 lock_acquire kernel/locking/lockdep.c:5886 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
 __fs_reclaim_acquire mm/page_alloc.c:4375 [inline]
 fs_reclaim_acquire+0xc4/0x100 mm/page_alloc.c:4389
 might_alloc include/linux/sched/mm.h:314 [inline]
 slab_pre_alloc_hook mm/slub.c:4539 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 kmem_cache_alloc_noprof+0x63/0x6a0 mm/slub.c:4933
 __radix_tree_preload+0x333/0x820 lib/radix-tree.c:338
 blkg_conf_prep+0x489/0xf10 block/blk-cgroup.c:885
 tg_set_conf.isra.0+0x1ed/0x500 block/blk-throttle.c:1373
 cgroup_file_write+0x1e6/0x8a0 kernel/cgroup/cgroup.c:4412
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7b6519e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7b66080028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7b65425fa0 RCX: 00007f7b6519e159
RDX: 000000000000006a RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007f7b65235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7b65426038 R14: 00007f7b65425fa0 R15: 00007ffc8680c158
 </TASK>