Extracting prog: 11m25.408847794s Minimizing prog: 8m36.654411155s Simplifying prog options: 0s Extracting C: 26.187306906s Simplifying C: 12m17.99814035s extracting reproducer from 25 programs testing a last program of every proc single: executing 5 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_udp-setsockopt$inet_group_source_req-openat$binderfs-mprotect-getsockopt$inet_buf detailed listing: executing program 0: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_group_source_req(r0, 0x0, 0x2e, &(0x7f0000000340)={0x8, {{0x2, 0x8000, @multicast2}}, {{0x2, 0x0, @multicast2}}}, 0x108) openat$binderfs(0xffffffffffffff9c, &(0x7f0000000180)='./binderfs/binder0\x00', 0x0, 0x0) mprotect(&(0x7f0000000000/0x4000)=nil, 0x4000, 0x1) getsockopt$inet_buf(r0, 0x0, 0x30, &(0x7f0000000340)=""/225, &(0x7f0000000180)=0xe1) program did not crash 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): memfd_create-socketpair$unix-sendmmsg$unix-recvmmsg-ppoll detailed listing: executing program 0: memfd_create(&(0x7f0000000140)='y\x105\xfb\xf7u\x83%:r\xc2\xb9x\xa4q\xc1\xea_\x8cZ7\xcda\x9b\x11X\x0e\xa1\xcf\x1a\x98S7\xc9\x00'/47, 0x2) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0) program did not crash 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_clone-ptrace-wait4-ptrace$setregset-ptrace$setregset detailed listing: executing program 0: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) wait4(r0, 0x0, 0x8, 0x0) ptrace$setregset(0x4205, r0, 0x1, &(0x7f0000000100)={&(0x7f0000000040)="dcef58b7f29c1f7c93d183044aedba283413e674c7719c33a4b17f028f68610a6c55bb2bf8282853f3e16f8394a8676ff55a3507e2ad50248c6130863b0f7433c7fbc9b978a39eae88bffd05d139cedbee444f7c98e1f92b0f64462b4b470bedced2125e0b1f38fbaa348c6d75aa1a4011e9cdae15ecb9309b0101edbf6dd6d111d6132f1821a4e4cbec8438c571a70e7ca7b0451a6cc55c", 0x98}) ptrace$setregset(0x4205, r0, 0x200, &(0x7f00000001c0)={&(0x7f0000000000)="c9453900000000000000000028685636", 0x10}) program did not crash 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet_udp-connect$pppl2tp-ioctl$PPPIOCGCHAN-recvfrom detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) program did not crash 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet_udp-connect$pppl2tp-ioctl$PPPIOCGCHAN-recvfrom detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) program did not crash single: failed to extract reproducer bisect: bisecting 25 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 3: r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000080)=[{0x6, 0x0, 0x0, 0x7fff0000}]}) r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000e40), 0x40080, 0x0) ioctl$TIOCPKT(r1, 0x5420, &(0x7f00000000c0)=0x1) ioctl$TCSETS(r1, 0x5402, &(0x7f0000000080)={0x1, 0x0, 0x0, 0x0, 0x9, "fe94b89fc43c3328eae0cae1f5eba329e6f216"}) splice(r1, 0x0, r0, 0x0, 0x7ffff000, 0x1) executing program 3: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x77, 0x29, 0x4, 0x20, 0x424, 0x9901, 0xc257, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0x43, 0x0, 0x2, 0x31, 0x7d, 0x55, 0x0, [], [{{0x9, 0x5, 0x2, 0x2, 0x200, 0x2}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io$uac1(r0, 0x0, &(0x7f0000000840)={0x44, &(0x7f00000005c0)={0x20, 0x10, 0x4, "7c103142"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac1(r0, 0x0, 0x0) syz_usb_control_io(r0, 0x0, &(0x7f00000008c0)={0x84, &(0x7f0000000300)={0x40, 0x17, 0x4, "0300253f"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 3: unshare(0x2a020400) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = eventfd2(0x0, 0x80001) ioctl$KVM_IRQFD(r1, 0x4020ae76, &(0x7f0000000180)={r2, 0x0, 0x1, r2}) executing program 3: r0 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) r1 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) mkdirat(r1, &(0x7f0000000200)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) renameat2(r1, &(0x7f0000000100)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r0, &(0x7f0000000180)='./file1\x00', 0x4) renameat2(r1, &(0x7f0000000300)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r1, &(0x7f00000003c0)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) executing program 3: r0 = socket$unix(0x1, 0x1, 0x0) bind$unix(r0, &(0x7f0000000180)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) close_range(r0, 0xffffffffffffffff, 0x0) r1 = socket$unix(0x1, 0x1, 0x0) connect$unix(r1, &(0x7f0000000000)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) executing program 3: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 32: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000380)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'veth0_macvtap\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r1, 0x1, 0x6, 0x6, @remote}, 0x14) sendmmsg$sock(r0, &(0x7f0000000a40)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x20004874) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) executing program 0: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20042, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = dup(r1) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x2) ioctl$KVM_HAS_DEVICE_ATTR_vcpu(r3, 0x4018aee3, &(0x7f00000001c0)=@attr_set_pmu={0x0, 0x1, 0x1, 0x0}) executing program 1: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000000)=0x100000001, 0x4) connect$inet6(r0, &(0x7f0000000200)={0xa, 0x0, 0x2, @loopback}, 0x1c) setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) setsockopt$inet6_tcp_TLS_TX(r0, 0x11a, 0x2, 0x0, 0x0) executing program 2: socket$xdp(0x2c, 0x3, 0x0) socket$xdp(0x2c, 0x3, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_SIOCGIFBR(r0, 0x8940, &(0x7f0000000040)=@add_del={0x2, &(0x7f0000000000)='ip6erspan0\x00'}) ioctl$sock_SIOCGIFBR(r1, 0x8941, &(0x7f0000000080)=@add_del={0x3, &(0x7f0000000100)='ip6erspan0\x00', 0x2a0ffffffff}) executing program 0: r0 = syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$int_in(r2, 0x5452, &(0x7f0000000040)=0x8001) fcntl$setownex(r2, 0xf, &(0x7f0000000140)={0x2, r0}) sendmmsg$unix(r1, &(0x7f0000011500)=[{{0x0, 0x0, &(0x7f0000000340)=[{&(0x7f0000000000)="11", 0x1}], 0x1, 0x0, 0x0, 0x4004040}}], 0x1, 0x40015) executing program 1: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000100)='memory.events\x00', 0x275a, 0x0) mmap$IORING_OFF_SQ_RING(&(0x7f0000001000/0x2000)=nil, 0x2000, 0x0, 0x12, r0, 0x0) r1 = gettid() sigaltstack(&(0x7f0000000480)={&(0x7f0000002340)=""/4126, 0x80000001, 0x101e}, 0x0) rt_sigqueueinfo(r1, 0x21, &(0x7f0000000100)={0x1f}) executing program 2: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r0, &(0x7f0000000280)={0x2, 0x4e21, @multicast1}, 0x10) connect$inet(r0, &(0x7f0000000180)={0x2, 0x4e21, @local}, 0x10) sendto$inet(r0, &(0x7f0000000900)='.', 0x1, 0x8012, 0x0, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x3, &(0x7f0000000040), 0x4) executing program 0: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000001c0)='pids.current\x00', 0x275a, 0x0) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0) ftruncate(r0, 0xc17a) ioctl$sock_FIOSETOWN(r0, 0x8901, &(0x7f0000004280)) lseek(r0, 0x2000, 0x4) executing program 1: syz_usb_control_io$uac1(0xffffffffffffffff, 0x0, &(0x7f0000000480)={0x44, &(0x7f00000000c0)={0x20, 0x11, 0x3, '.#,'}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r0 = syz_open_dev$evdev(&(0x7f0000000040), 0x0, 0x0) syz_usb_disconnect(r0) syz_usb_connect(0x4, 0x24, &(0x7f0000000400)=ANY=[], 0x0) ioctl$EVIOCRMFF(r0, 0x40085507, &(0x7f00000000c0)) executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) bind$inet6(r0, &(0x7f0000f5dfe4)={0xa, 0x4e20, 0x0, @empty}, 0x1c) recvmmsg(r0, &(0x7f0000000040), 0x400000000000284, 0x2, 0x0) setsockopt$inet6_int(r0, 0x29, 0x8, &(0x7f0000000000)=0x7f, 0x4) sendto$inet6(r0, 0x0, 0x0, 0x20000001, &(0x7f0000000300)={0xa, 0x4e20, 0x5, @mcast1}, 0x1c) executing program 0: r0 = syz_open_dev$loop(&(0x7f00000005c0), 0xffff, 0x109041) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events.local\x00', 0x275a, 0x0) write$binfmt_script(r1, &(0x7f0000000040), 0x208e24b) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x1000, {0x2a00, 0x80010000, 0x0, 0x52, 0x0, 0x0, 0x0, 0x0, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d09000000000000008dd4992861ac1000", "90be6c09306003d8006000", [0x0, 0x2]}}) ioctl$LOOP_SET_CAPACITY(r0, 0x4c07) executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000000c0)=[{&(0x7f0000000580)='[', 0x1}], 0x1, 0x0, 0x0, 0x40044}}], 0x1, 0x4) setsockopt$sock_int(r0, 0x1, 0x10, &(0x7f00000002c0)=0x8001, 0x4) write$binfmt_elf64(r1, &(0x7f0000000600)=ANY=[], 0x78) recvmmsg$unix(r0, &(0x7f00000018c0)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f00000007c0)}}], 0x1, 0x40002120, 0x0) executing program 2: mkdir(&(0x7f0000000080)='./file0\x00', 0x0) mount$cgroup(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f0000000100)={[{@subsystem='cpuset'}, {@subsystem='memory'}, {@subsystem='cpuacct'}]}) r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r1 = openat$cgroup_procs(r0, &(0x7f0000000340)='cgroup.procs\x00', 0x2, 0x0) preadv2(r1, &(0x7f0000000240)=[{&(0x7f00000000c0)=""/50, 0x32}], 0x1, 0x6, 0x0, 0x0) executing program 1: r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x4}) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2000007, 0x31, 0xffffffffffffffff, 0x0) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x1}) ioctl$UFFDIO_CONTINUE(r0, 0xc020aa07, &(0x7f0000000080)={{&(0x7f0000a97000/0x1000)=nil, 0x1000}}) executing program 0: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) wait4(r0, 0x0, 0x8, 0x0) ptrace$setregset(0x4205, r0, 0x1, &(0x7f0000000100)={&(0x7f0000000040)="dcef58b7f29c1f7c93d183044aedba283413e674c7719c33a4b17f028f68610a6c55bb2bf8282853f3e16f8394a8676ff55a3507e2ad50248c6130863b0f7433c7fbc9b978a39eae88bffd05d139cedbee444f7c98e1f92b0f64462b4b470bedced2125e0b1f38fbaa348c6d75aa1a4011e9cdae15ecb9309b0101edbf6dd6d111d6132f1821a4e4cbec8438c571a70e7ca7b0451a6cc55c", 0x98}) ptrace$setregset(0x4205, r0, 0x200, &(0x7f00000001c0)={&(0x7f0000000000)="c9453900000000000000000028685636", 0x10}) executing program 1: memfd_create(&(0x7f0000000140)='y\x105\xfb\xf7u\x83%:r\xc2\xb9x\xa4q\xc1\xea_\x8cZ7\xcda\x9b\x11X\x0e\xa1\xcf\x1a\x98S7\xc9\x00'/47, 0x2) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0) executing program 2: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_group_source_req(r0, 0x0, 0x2e, &(0x7f0000000340)={0x8, {{0x2, 0x8000, @multicast2}}, {{0x2, 0x0, @multicast2}}}, 0x108) openat$binderfs(0xffffffffffffff9c, &(0x7f0000000180)='./binderfs/binder0\x00', 0x0, 0x0) mprotect(&(0x7f0000000000/0x4000)=nil, 0x4000, 0x1) getsockopt$inet_buf(r0, 0x0, 0x30, &(0x7f0000000340)=""/225, &(0x7f0000000180)=0xe1) program crashed: WARNING in shmem_rmdir bisect: bisecting 25 programs bisect: split chunks (needed=false): <25> bisect: split chunk #0 of len 25 into 3 parts bisect: testing without sub-chunk 1/3 testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 0: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20042, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = dup(r1) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x2) ioctl$KVM_HAS_DEVICE_ATTR_vcpu(r3, 0x4018aee3, &(0x7f00000001c0)=@attr_set_pmu={0x0, 0x1, 0x1, 0x0}) executing program 1: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000000)=0x100000001, 0x4) connect$inet6(r0, &(0x7f0000000200)={0xa, 0x0, 0x2, @loopback}, 0x1c) setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000000c0), 0x4) setsockopt$inet6_tcp_TLS_TX(r0, 0x11a, 0x2, 0x0, 0x0) executing program 2: socket$xdp(0x2c, 0x3, 0x0) socket$xdp(0x2c, 0x3, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_SIOCGIFBR(r0, 0x8940, &(0x7f0000000040)=@add_del={0x2, &(0x7f0000000000)='ip6erspan0\x00'}) ioctl$sock_SIOCGIFBR(r1, 0x8941, &(0x7f0000000080)=@add_del={0x3, &(0x7f0000000100)='ip6erspan0\x00', 0x2a0ffffffff}) executing program 0: r0 = syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$int_in(r2, 0x5452, &(0x7f0000000040)=0x8001) fcntl$setownex(r2, 0xf, &(0x7f0000000140)={0x2, r0}) sendmmsg$unix(r1, &(0x7f0000011500)=[{{0x0, 0x0, &(0x7f0000000340)=[{&(0x7f0000000000)="11", 0x1}], 0x1, 0x0, 0x0, 0x4004040}}], 0x1, 0x40015) executing program 1: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000100)='memory.events\x00', 0x275a, 0x0) mmap$IORING_OFF_SQ_RING(&(0x7f0000001000/0x2000)=nil, 0x2000, 0x0, 0x12, r0, 0x0) r1 = gettid() sigaltstack(&(0x7f0000000480)={&(0x7f0000002340)=""/4126, 0x80000001, 0x101e}, 0x0) rt_sigqueueinfo(r1, 0x21, &(0x7f0000000100)={0x1f}) executing program 2: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r0, &(0x7f0000000280)={0x2, 0x4e21, @multicast1}, 0x10) connect$inet(r0, &(0x7f0000000180)={0x2, 0x4e21, @local}, 0x10) sendto$inet(r0, &(0x7f0000000900)='.', 0x1, 0x8012, 0x0, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x3, &(0x7f0000000040), 0x4) executing program 0: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000001c0)='pids.current\x00', 0x275a, 0x0) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x2, 0x28011, r0, 0x0) ftruncate(r0, 0xc17a) ioctl$sock_FIOSETOWN(r0, 0x8901, &(0x7f0000004280)) lseek(r0, 0x2000, 0x4) executing program 1: syz_usb_control_io$uac1(0xffffffffffffffff, 0x0, &(0x7f0000000480)={0x44, &(0x7f00000000c0)={0x20, 0x11, 0x3, '.#,'}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r0 = syz_open_dev$evdev(&(0x7f0000000040), 0x0, 0x0) syz_usb_disconnect(r0) syz_usb_connect(0x4, 0x24, &(0x7f0000000400)=ANY=[], 0x0) ioctl$EVIOCRMFF(r0, 0x40085507, &(0x7f00000000c0)) executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) bind$inet6(r0, &(0x7f0000f5dfe4)={0xa, 0x4e20, 0x0, @empty}, 0x1c) recvmmsg(r0, &(0x7f0000000040), 0x400000000000284, 0x2, 0x0) setsockopt$inet6_int(r0, 0x29, 0x8, &(0x7f0000000000)=0x7f, 0x4) sendto$inet6(r0, 0x0, 0x0, 0x20000001, &(0x7f0000000300)={0xa, 0x4e20, 0x5, @mcast1}, 0x1c) executing program 0: r0 = syz_open_dev$loop(&(0x7f00000005c0), 0xffff, 0x109041) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events.local\x00', 0x275a, 0x0) write$binfmt_script(r1, &(0x7f0000000040), 0x208e24b) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x1000, {0x2a00, 0x80010000, 0x0, 0x52, 0x0, 0x0, 0x0, 0x0, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d09000000000000008dd4992861ac1000", "90be6c09306003d8006000", [0x0, 0x2]}}) ioctl$LOOP_SET_CAPACITY(r0, 0x4c07) executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000000c0)=[{&(0x7f0000000580)='[', 0x1}], 0x1, 0x0, 0x0, 0x40044}}], 0x1, 0x4) setsockopt$sock_int(r0, 0x1, 0x10, &(0x7f00000002c0)=0x8001, 0x4) write$binfmt_elf64(r1, &(0x7f0000000600)=ANY=[], 0x78) recvmmsg$unix(r0, &(0x7f00000018c0)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f00000007c0)}}], 0x1, 0x40002120, 0x0) executing program 2: mkdir(&(0x7f0000000080)='./file0\x00', 0x0) mount$cgroup(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f0000000100)={[{@subsystem='cpuset'}, {@subsystem='memory'}, {@subsystem='cpuacct'}]}) r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r1 = openat$cgroup_procs(r0, &(0x7f0000000340)='cgroup.procs\x00', 0x2, 0x0) preadv2(r1, &(0x7f0000000240)=[{&(0x7f00000000c0)=""/50, 0x32}], 0x1, 0x6, 0x0, 0x0) executing program 1: r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x4}) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2000007, 0x31, 0xffffffffffffffff, 0x0) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x1}) ioctl$UFFDIO_CONTINUE(r0, 0xc020aa07, &(0x7f0000000080)={{&(0x7f0000a97000/0x1000)=nil, 0x1000}}) executing program 0: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) wait4(r0, 0x0, 0x8, 0x0) ptrace$setregset(0x4205, r0, 0x1, &(0x7f0000000100)={&(0x7f0000000040)="dcef58b7f29c1f7c93d183044aedba283413e674c7719c33a4b17f028f68610a6c55bb2bf8282853f3e16f8394a8676ff55a3507e2ad50248c6130863b0f7433c7fbc9b978a39eae88bffd05d139cedbee444f7c98e1f92b0f64462b4b470bedced2125e0b1f38fbaa348c6d75aa1a4011e9cdae15ecb9309b0101edbf6dd6d111d6132f1821a4e4cbec8438c571a70e7ca7b0451a6cc55c", 0x98}) ptrace$setregset(0x4205, r0, 0x200, &(0x7f00000001c0)={&(0x7f0000000000)="c9453900000000000000000028685636", 0x10}) executing program 1: memfd_create(&(0x7f0000000140)='y\x105\xfb\xf7u\x83%:r\xc2\xb9x\xa4q\xc1\xea_\x8cZ7\xcda\x9b\x11X\x0e\xa1\xcf\x1a\x98S7\xc9\x00'/47, 0x2) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0) executing program 2: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_group_source_req(r0, 0x0, 0x2e, &(0x7f0000000340)={0x8, {{0x2, 0x8000, @multicast2}}, {{0x2, 0x0, @multicast2}}}, 0x108) openat$binderfs(0xffffffffffffff9c, &(0x7f0000000180)='./binderfs/binder0\x00', 0x0, 0x0) mprotect(&(0x7f0000000000/0x4000)=nil, 0x4000, 0x1) getsockopt$inet_buf(r0, 0x0, 0x30, &(0x7f0000000340)=""/225, &(0x7f0000000180)=0xe1) program did not crash bisect: testing without sub-chunk 2/3 testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 3: r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000080)=[{0x6, 0x0, 0x0, 0x7fff0000}]}) r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000e40), 0x40080, 0x0) ioctl$TIOCPKT(r1, 0x5420, &(0x7f00000000c0)=0x1) ioctl$TCSETS(r1, 0x5402, &(0x7f0000000080)={0x1, 0x0, 0x0, 0x0, 0x9, "fe94b89fc43c3328eae0cae1f5eba329e6f216"}) splice(r1, 0x0, r0, 0x0, 0x7ffff000, 0x1) executing program 3: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x77, 0x29, 0x4, 0x20, 0x424, 0x9901, 0xc257, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0x43, 0x0, 0x2, 0x31, 0x7d, 0x55, 0x0, [], [{{0x9, 0x5, 0x2, 0x2, 0x200, 0x2}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io$uac1(r0, 0x0, &(0x7f0000000840)={0x44, &(0x7f00000005c0)={0x20, 0x10, 0x4, "7c103142"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac1(r0, 0x0, 0x0) syz_usb_control_io(r0, 0x0, &(0x7f00000008c0)={0x84, &(0x7f0000000300)={0x40, 0x17, 0x4, "0300253f"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 3: unshare(0x2a020400) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = eventfd2(0x0, 0x80001) ioctl$KVM_IRQFD(r1, 0x4020ae76, &(0x7f0000000180)={r2, 0x0, 0x1, r2}) executing program 3: r0 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) r1 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) mkdirat(r1, &(0x7f0000000200)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) renameat2(r1, &(0x7f0000000100)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r0, &(0x7f0000000180)='./file1\x00', 0x4) renameat2(r1, &(0x7f0000000300)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r1, &(0x7f00000003c0)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) executing program 3: r0 = socket$unix(0x1, 0x1, 0x0) bind$unix(r0, &(0x7f0000000180)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) close_range(r0, 0xffffffffffffffff, 0x0) r1 = socket$unix(0x1, 0x1, 0x0) connect$unix(r1, &(0x7f0000000000)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) executing program 3: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 32: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000380)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'veth0_macvtap\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r1, 0x1, 0x6, 0x6, @remote}, 0x14) sendmmsg$sock(r0, &(0x7f0000000a40)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x20004874) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) executing program 0: r0 = syz_open_dev$loop(&(0x7f00000005c0), 0xffff, 0x109041) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events.local\x00', 0x275a, 0x0) write$binfmt_script(r1, &(0x7f0000000040), 0x208e24b) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x1000, {0x2a00, 0x80010000, 0x0, 0x52, 0x0, 0x0, 0x0, 0x0, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d09000000000000008dd4992861ac1000", "90be6c09306003d8006000", [0x0, 0x2]}}) ioctl$LOOP_SET_CAPACITY(r0, 0x4c07) executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000000c0)=[{&(0x7f0000000580)='[', 0x1}], 0x1, 0x0, 0x0, 0x40044}}], 0x1, 0x4) setsockopt$sock_int(r0, 0x1, 0x10, &(0x7f00000002c0)=0x8001, 0x4) write$binfmt_elf64(r1, &(0x7f0000000600)=ANY=[], 0x78) recvmmsg$unix(r0, &(0x7f00000018c0)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f00000007c0)}}], 0x1, 0x40002120, 0x0) executing program 2: mkdir(&(0x7f0000000080)='./file0\x00', 0x0) mount$cgroup(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f0000000100)={[{@subsystem='cpuset'}, {@subsystem='memory'}, {@subsystem='cpuacct'}]}) r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000), 0x200002, 0x0) r1 = openat$cgroup_procs(r0, &(0x7f0000000340)='cgroup.procs\x00', 0x2, 0x0) preadv2(r1, &(0x7f0000000240)=[{&(0x7f00000000c0)=""/50, 0x32}], 0x1, 0x6, 0x0, 0x0) executing program 1: r0 = userfaultfd(0x801) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x4}) mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2000007, 0x31, 0xffffffffffffffff, 0x0) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000000)={{&(0x7f0000400000/0xc00000)=nil, 0xc00000}, 0x1}) ioctl$UFFDIO_CONTINUE(r0, 0xc020aa07, &(0x7f0000000080)={{&(0x7f0000a97000/0x1000)=nil, 0x1000}}) executing program 0: r0 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) ptrace(0x10, r0) wait4(r0, 0x0, 0x8, 0x0) ptrace$setregset(0x4205, r0, 0x1, &(0x7f0000000100)={&(0x7f0000000040)="dcef58b7f29c1f7c93d183044aedba283413e674c7719c33a4b17f028f68610a6c55bb2bf8282853f3e16f8394a8676ff55a3507e2ad50248c6130863b0f7433c7fbc9b978a39eae88bffd05d139cedbee444f7c98e1f92b0f64462b4b470bedced2125e0b1f38fbaa348c6d75aa1a4011e9cdae15ecb9309b0101edbf6dd6d111d6132f1821a4e4cbec8438c571a70e7ca7b0451a6cc55c", 0x98}) ptrace$setregset(0x4205, r0, 0x200, &(0x7f00000001c0)={&(0x7f0000000000)="c9453900000000000000000028685636", 0x10}) executing program 1: memfd_create(&(0x7f0000000140)='y\x105\xfb\xf7u\x83%:r\xc2\xb9x\xa4q\xc1\xea_\x8cZ7\xcda\x9b\x11X\x0e\xa1\xcf\x1a\x98S7\xc9\x00'/47, 0x2) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0) executing program 2: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_group_source_req(r0, 0x0, 0x2e, &(0x7f0000000340)={0x8, {{0x2, 0x8000, @multicast2}}, {{0x2, 0x0, @multicast2}}}, 0x108) openat$binderfs(0xffffffffffffff9c, &(0x7f0000000180)='./binderfs/binder0\x00', 0x0, 0x0) mprotect(&(0x7f0000000000/0x4000)=nil, 0x4000, 0x1) getsockopt$inet_buf(r0, 0x0, 0x30, &(0x7f0000000340)=""/225, &(0x7f0000000180)=0xe1) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5] detailed listing: executing program 3: r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000080)=[{0x6, 0x0, 0x0, 0x7fff0000}]}) r1 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000e40), 0x40080, 0x0) ioctl$TIOCPKT(r1, 0x5420, &(0x7f00000000c0)=0x1) ioctl$TCSETS(r1, 0x5402, &(0x7f0000000080)={0x1, 0x0, 0x0, 0x0, 0x9, "fe94b89fc43c3328eae0cae1f5eba329e6f216"}) splice(r1, 0x0, r0, 0x0, 0x7ffff000, 0x1) executing program 3: r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0x77, 0x29, 0x4, 0x20, 0x424, 0x9901, 0xc257, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0x43, 0x0, 0x2, 0x31, 0x7d, 0x55, 0x0, [], [{{0x9, 0x5, 0x2, 0x2, 0x200, 0x2}}, {{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0) syz_usb_control_io(r0, 0x0, 0x0) syz_usb_control_io$uac1(r0, 0x0, &(0x7f0000000840)={0x44, &(0x7f00000005c0)={0x20, 0x10, 0x4, "7c103142"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac1(r0, 0x0, 0x0) syz_usb_control_io(r0, 0x0, &(0x7f00000008c0)={0x84, &(0x7f0000000300)={0x40, 0x17, 0x4, "0300253f"}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) executing program 3: unshare(0x2a020400) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = eventfd2(0x0, 0x80001) ioctl$KVM_IRQFD(r1, 0x4020ae76, &(0x7f0000000180)={r2, 0x0, 0x1, r2}) executing program 3: r0 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) r1 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) mkdirat(r1, &(0x7f0000000200)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) renameat2(r1, &(0x7f0000000100)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r0, &(0x7f0000000180)='./file1\x00', 0x4) renameat2(r1, &(0x7f0000000300)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r1, &(0x7f00000003c0)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) executing program 3: r0 = socket$unix(0x1, 0x1, 0x0) bind$unix(r0, &(0x7f0000000180)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) close_range(r0, 0xffffffffffffffff, 0x0) r1 = socket$unix(0x1, 0x1, 0x0) connect$unix(r1, &(0x7f0000000000)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) executing program 3: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 32: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000380)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'veth0_macvtap\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r1, 0x1, 0x6, 0x6, @remote}, 0x14) sendmmsg$sock(r0, &(0x7f0000000a40)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x20004874) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: split chunks (needed=true): <9> bisect: split chunk #0 of len 9 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5] detailed listing: executing program 3: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 32: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet_udp(0x2, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f00000000c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r1, 0x3, 0x0, 0x0, 0x0, {0xa, 0x4e21, 0x2045, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}}}, 0x3a) ioctl$PPPIOCGCHAN(r0, 0x80047437, &(0x7f0000000100)) recvfrom(r0, 0x0, 0x0, 0x20000023, 0x0, 0x0) executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000380)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'veth0_macvtap\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r1, 0x1, 0x6, 0x6, @remote}, 0x14) sendmmsg$sock(r0, &(0x7f0000000a40)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x20004874) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <4> bisect: split chunk #0 of len 4 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5] detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000380)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'veth0_macvtap\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r1, 0x1, 0x6, 0x6, @remote}, 0x14) sendmmsg$sock(r0, &(0x7f0000000a40)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x20004874) executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <2> bisect: split chunk #0 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mkdir-mount$incfs-chdir-openat$cgroup_ro detailed listing: executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) program crashed: WARNING in shmem_rmdir bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <1> bisect: split chunk #0 of len 1 into 2 parts bisect: no way to further split the chunk bisect: 1 programs left: executing program 2: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) bisect: trying to concatenate bisect: concatenate 1 entries 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mkdir-mount$incfs-chdir-openat$cgroup_ro detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) program crashed: WARNING in shmem_rmdir bisect: concatenation succeeded found reproducer with 5 syscalls minimizing guilty program testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mkdir-mount$incfs-chdir detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) chdir(&(0x7f00000001c0)='./bus\x00') program crashed: WARNING in shmem_rmdir testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mkdir-mount$incfs detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program crashed: WARNING in shmem_rmdir testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mkdir detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) program did not crash testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-mount$incfs detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000280)='cpuacct.usage_percpu\x00', 0x275a, 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program did not crash testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program crashed: WARNING in shmem_rmdir testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(0x0, 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program did not crash testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(0x0, &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program did not crash testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', 0x0, &(0x7f0000000840), 0x1004002, 0x0) program did not crash testing program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', 0x0, 0x1004002, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=42.574216702s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir simplifying C reproducer testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program did not crash testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing compiled C program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs program crashed: WARNING in shmem_rmdir testing program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true testing program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true testing program (duration=42.574216702s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs detailed listing: executing program 0: mkdir(&(0x7f00000000c0)='./bus\x00', 0x0) mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0) program crashed: WARNING in shmem_rmdir validation run: crashed=true reproducing took 35m13.866801115s repro crashed as (corrupted=false): veth0_vlan: entered promiscuous mode veth1_macvtap: entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 369 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340 Modules linked in: CPU: 0 UID: 0 PID: 369 Comm: syz-executor Not tainted syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340 Code: 04 00 00 be 08 00 00 00 e8 0f 1d ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d2 55 96 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c RSP: 0018:ffffc9000116fc60 EFLAGS: 00010293 RAX: ffffffff81f1303e RBX: ffff888114e55e30 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fc88 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff5200022df7c R12: dffffc0000000000 R13: 1ffff110229cabcf R14: ffff888114e55e78 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556ce42948 CR3: 000000011441e000 CR4: 00000000003526b0 Call Trace: shmem_rmdir+0x5f/0x90 mm/shmem.c:3735 vfs_rmdir+0x3e0/0x560 fs/namei.c:4348 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452 Write of size 4 at addr 0000000000000168 by task syz-executor/369 CPU: 1 UID: 0 PID: 369 Comm: syz-executor Tainted: G W syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120 print_report+0x3d/0x70 mm/kasan/report.c:484 kasan_report+0x162/0x1a0 mm/kasan/report.c:594 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] ihold+0x24/0x70 fs/inode.c:452 d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x26a/0x560 fs/namei.c:4361 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000168 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 8000000114e5f067 P4D 8000000114e5f067 PUD 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 369 Comm: syz-executor Tainted: G B W syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Tainted: [B]=BAD_PAGE, [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 bd 4c 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 cc 13 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 cd RSP: 0018:ffffc9000116fca0 EFLAGS: 00010246 RAX: ffff888107bd0000 RBX: 0000000000000000 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fcb0 R08: ffffffff88b86947 R09: 1ffffffff1170d28 R10: dffffc0000000000 R11: fffffbfff1170d29 R12: ffff888114e55e3c R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000011441e000 CR4: 00000000003526b0 Call Trace: d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x26a/0x560 fs/namei.c:4361 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 Modules linked in: CR2: 0000000000000168 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 bd 4c 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 cc 13 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 cd RSP: 0018:ffffc9000116fca0 EFLAGS: 00010246 RAX: ffff888107bd0000 RBX: 0000000000000000 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fcb0 R08: ffffffff88b86947 R09: 1ffffffff1170d28 R10: dffffc0000000000 R11: fffffbfff1170d29 R12: ffff888114e55e3c R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000011441e000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: f3 0f 1e fa endbr64 4: 55 push %rbp 5: 48 89 e5 mov %rsp,%rbp 8: 41 56 push %r14 a: 53 push %rbx b: 48 89 fb mov %rdi,%rbx e: e8 bd 4c 96 ff call 0xff964cd0 13: 48 8d bb 68 01 00 00 lea 0x168(%rbx),%rdi 1a: be 04 00 00 00 mov $0x4,%esi 1f: e8 cc 13 ee ff call 0xffee13f0 24: 41 be 01 00 00 00 mov $0x1,%r14d * 2a: f0 44 0f c1 b3 68 01 lock xadd %r14d,0x168(%rbx) <-- trapping instruction 31: 00 00 33: 41 ff c6 inc %r14d 36: bf 02 00 00 00 mov $0x2,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: cd .byte 0xcd final repro crashed as (corrupted=false): veth0_vlan: entered promiscuous mode veth1_macvtap: entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 369 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340 Modules linked in: CPU: 0 UID: 0 PID: 369 Comm: syz-executor Not tainted syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340 Code: 04 00 00 be 08 00 00 00 e8 0f 1d ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 d2 55 96 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c RSP: 0018:ffffc9000116fc60 EFLAGS: 00010293 RAX: ffffffff81f1303e RBX: ffff888114e55e30 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fc88 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff5200022df7c R12: dffffc0000000000 R13: 1ffff110229cabcf R14: ffff888114e55e78 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556ce42948 CR3: 000000011441e000 CR4: 00000000003526b0 Call Trace: shmem_rmdir+0x5f/0x90 mm/shmem.c:3735 vfs_rmdir+0x3e0/0x560 fs/namei.c:4348 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452 Write of size 4 at addr 0000000000000168 by task syz-executor/369 CPU: 1 UID: 0 PID: 369 Comm: syz-executor Tainted: G W syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120 print_report+0x3d/0x70 mm/kasan/report.c:484 kasan_report+0x162/0x1a0 mm/kasan/report.c:594 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline] ihold+0x24/0x70 fs/inode.c:452 d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x26a/0x560 fs/namei.c:4361 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000168 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 8000000114e5f067 P4D 8000000114e5f067 PUD 0 Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 369 Comm: syz-executor Tainted: G B W syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb Tainted: [B]=BAD_PAGE, [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 bd 4c 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 cc 13 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 cd RSP: 0018:ffffc9000116fca0 EFLAGS: 00010246 RAX: ffff888107bd0000 RBX: 0000000000000000 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fcb0 R08: ffffffff88b86947 R09: 1ffffffff1170d28 R10: dffffc0000000000 R11: fffffbfff1170d29 R12: ffff888114e55e3c R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000011441e000 CR4: 00000000003526b0 Call Trace: d_delete_notify include/linux/fsnotify.h:357 [inline] vfs_rmdir+0x26a/0x560 fs/namei.c:4361 incfs_kill_sb+0x109/0x230 fs/incfs/vfs.c:1968 deactivate_locked_super+0xd8/0x2a0 fs/super.c:476 deactivate_super+0xb8/0xe0 fs/super.c:509 cleanup_mnt+0x406/0x4a0 fs/namespace.c:1380 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387 task_work_run+0x1e5/0x260 kernel/task_work.c:240 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fad0e99bf17 Code: a2 c7 05 7c 96 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1d6ff108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad0e99bf17 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1d6ff1c0 RBP: 00007fff1d6ff1c0 R08: 00007fff1d7001c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff1d700250 R13: 00007fad0ea0471f R14: 0000000000006810 R15: 00007fff1d700290 Modules linked in: CR2: 0000000000000168 ---[ end trace 0000000000000000 ]--- RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline] RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline] RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline] RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline] RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452 Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 bd 4c 96 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 cc 13 ee ff 41 be 01 00 00 00 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 cd RSP: 0018:ffffc9000116fca0 EFLAGS: 00010246 RAX: ffff888107bd0000 RBX: 0000000000000000 RCX: ffff888107bd0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000116fcb0 R08: ffffffff88b86947 R09: 1ffffffff1170d28 R10: dffffc0000000000 R11: fffffbfff1170d29 R12: ffff888114e55e3c R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 000055556ce1f500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000168 CR3: 000000011441e000 CR4: 00000000003526b0 ---------------- Code disassembly (best guess): 0: f3 0f 1e fa endbr64 4: 55 push %rbp 5: 48 89 e5 mov %rsp,%rbp 8: 41 56 push %r14 a: 53 push %rbx b: 48 89 fb mov %rdi,%rbx e: e8 bd 4c 96 ff call 0xff964cd0 13: 48 8d bb 68 01 00 00 lea 0x168(%rbx),%rdi 1a: be 04 00 00 00 mov $0x4,%esi 1f: e8 cc 13 ee ff call 0xffee13f0 24: 41 be 01 00 00 00 mov $0x1,%r14d * 2a: f0 44 0f c1 b3 68 01 lock xadd %r14d,0x168(%rbx) <-- trapping instruction 31: 00 00 33: 41 ff c6 inc %r14d 36: bf 02 00 00 00 mov $0x2,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: cd .byte 0xcd