Extracting prog: 49m12.323698174s Minimizing prog: 1h14m38.633829961s Simplifying prog options: 12m13.370130339s Extracting C: 5m13.149098665s Simplifying C: 0s extracting reproducer from 71 programs testing a last program of every proc single: executing 22 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$tun-socket$inet6_icmp_raw-ioctl$TUNSETIFF-socket$kcm-ioctl$SIOCSIFHWADDR-write$tun-readv detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x40241, 0x0) r1 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201}) r2 = socket$kcm(0x2, 0xa, 0x2) ioctl$SIOCSIFHWADDR(r2, 0x8914, &(0x7f0000000180)={'syzkaller1\x00', @link_local}) write$tun(r0, &(0x7f0000000300)=ANY=[@ANYBLOB="000086dd03000a000000140000006c07010033d43afffe800000000000000000000000000010ff020000000000000000000000000001"], 0x340a) readv(r1, &(0x7f0000000840)=[{&(0x7f0000000140)=""/32, 0x20}], 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): socketpair$unix-syz_open_dev$usbfs-syz_init_net_socket$x25-socket$inet6-openat$sw_sync-openat$sw_sync-ioctl$SW_SYNC_IOC_CREATE_FENCE-ioctl$SW_SYNC_IOC_CREATE_FENCE-ioctl$SYNC_IOC_MERGE-ioctl$SYNC_IOC_MERGE-accept4$x25-syz_open_dev$usbfs-ioctl$USBDEVFS_SUBMITURB-openat$rdma_cm-sendmsg$nl_xfrm-getuid-mount$overlay-socket-sendmmsg$inet-openat$qrtrtun-pread64-close_range-write$RDMA_USER_CM_CMD_RESOLVE_IP-sendmsg$NFNL_MSG_ACCT_NEW-close_range detailed listing: executing program 0: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) syz_open_dev$usbfs(&(0x7f0000000080), 0x75, 0x109301) r1 = syz_init_net_socket$x25(0x9, 0x5, 0x0) socket$inet6(0xa, 0x800000000000002, 0x0) r2 = openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r3 = openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000ac0), 0x40000, 0x0) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000040)={0x4, "abacd211119ca94c63377526aeb5ab2c7b9ca5fa07558139ede6dc06270ee042", 0xffffffffffffffff}) ioctl$SW_SYNC_IOC_CREATE_FENCE(r2, 0xc0285700, &(0x7f0000000100)={0x8, "b546baa5cc590d3033de259c2996817bb959ebab028deda501009bdeffafde25", 0xffffffffffffffff}) ioctl$SYNC_IOC_MERGE(r4, 0xc0303e03, &(0x7f00000001c0)={"0080bced01eb0100000000000000000700000000000000c900", r5, 0xffffffffffffffff}) ioctl$SYNC_IOC_MERGE(r4, 0xc0303e03, &(0x7f00000000c0)={"fd5402757ac648cf2920e38afac94e776d5bcb702f5bd18722ca3c56bc46e28b", r6}) accept4$x25(r1, 0x0, 0x0, 0x80000) r7 = syz_open_dev$usbfs(&(0x7f0000000040), 0x0, 0x4000) ioctl$USBDEVFS_SUBMITURB(r7, 0x802c550a, &(0x7f0000000500)=@urb_type_control={0x2, {0x0, 0x1}, 0x7, 0xc5, &(0x7f0000000000)={0x80, 0x14, 0xf801, 0x200, 0x7}, 0x8, 0x8004, 0x0, 0x0, 0x6f, 0x5ffffff9, 0x0}) openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0) sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000480)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000840)=@updpolicy={0xf8, 0x19, 0x1, 0x0, 0x0, {{@in, @in6=@ipv4={'\x00', '\xff\xff', @multicast1}, 0x0, 0x0, 0xfffd, 0x0, 0xa}, {0x0, 0x7, 0x0, 0x7fffffff, 0x0, 0x2}, {0xfffffffffffffffe, 0xffffffffffffffff}, 0x0, 0xfffffffc, 0x1, 0x0, 0x0, 0x3}, [@tmpl={0x44, 0x5, [{{@in6=@rand_addr=' \x01\x00', 0x2, 0x2b}, 0xa, @in6=@private1, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x8001}]}]}, 0xf8}, 0x1, 0x0, 0x0, 0xc1}, 0x0) r8 = getuid() mount$overlay(0x0, &(0x7f0000000280)='./file0\x00', &(0x7f00000002c0), 0x2000, &(0x7f0000000340)={[{@xino_on}, {@workdir={'workdir', 0x3d, './file0'}}], [{@fscontext={'fscontext', 0x3d, 'unconfined_u'}}, {@euid_eq={'euid', 0x3d, r8}}]}) r9 = socket(0x2, 0x3, 0xff) sendmmsg$inet(r9, &(0x7f0000000cc0)=[{{&(0x7f0000000240)={0x2, 0x4e24, @rand_addr=0x64010101}, 0x10, &(0x7f0000000640)=[{&(0x7f0000000300)="028d8cbfd9bbf7df020797310a2bb2d6", 0x10}, {&(0x7f00000003c0)="cb82278ec04d46183befda756be78eb919329de663f5471bf5bb05e7c2842e3abb4608acdfad3c49e06cbf", 0x2b}, {&(0x7f0000000540)="9ab738cfd5eb4561f4ae10285eed1dd7ed44b889643ecd841942ca655597790a65ea42565472fa7771ac55779b964338f1f76b8e5e12961d07cb7249b710a1b3a63a58af87af8ec75ad30e88e95d3db81cc517948d9f03797e1264f2bc3ea74e24caa089acca463e23eacca179c468a3367e3d3a910786a5e25f1b60c5e7d2580c82c1252b7cd547aeb7fd526b7a4f7c3b451b5bbb3f71cc6ca433b9c0cf9e9ed1810e12f5a6970b5b73a5258c9ad7cfbd138cd4ada99787256761866110bc35d37718e06caaf25bc725d2cb56814f15c5b4dfc26ad6a59aa52124f79c08", 0xde}], 0x3, &(0x7f0000000940)=[@ip_retopts={{0x70, 0x0, 0x7, {[@ra={0x94, 0x4}, @timestamp_prespec={0x44, 0x1c, 0xad, 0x3, 0x3, [{@multicast1, 0x9}, {@private=0xa010101, 0x5}, {@local, 0xaa}]}, @rr={0x7, 0xf, 0xab, [@multicast1, @rand_addr=0x64010100, @multicast2]}, @timestamp_addr={0x44, 0x2c, 0x89, 0x1, 0x5, [{@dev={0xac, 0x14, 0x14, 0x13}, 0x6}, {@broadcast, 0x2}, {@multicast1, 0x7}, {@rand_addr=0x64010101, 0xb}, {@local, 0x800}]}, @lsrr={0x83, 0x3, 0xb6}]}}}, @ip_ttl={{0x14, 0x0, 0x2, 0x1}}, @ip_retopts={{0x30, 0x0, 0x7, {[@cipso={0x86, 0x1b, 0x2, [{0x7, 0x8, "a6655fff2e28"}, {0x0, 0xd, "7420afdc505f8d3d0b5fc6"}]}, @end, @ra={0x94, 0x4}]}}}, @ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @broadcast, @dev={0xac, 0x14, 0x14, 0x12}}}}, @ip_retopts={{0x34, 0x0, 0x7, {[@timestamp={0x44, 0x8, 0x4d, 0x0, 0x5, [0x9]}, @noop, @rr={0x7, 0x1b, 0x32, [@local, @local, @initdev={0xac, 0x1e, 0x0, 0x0}, @private=0xa010102, @empty, @remote]}]}}}, @ip_tos_u8={{0x11, 0x0, 0x1, 0x6}}], 0x128}}, {{&(0x7f0000000a80)={0x2, 0x4e24, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x10, &(0x7f0000000c00)=[{&(0x7f0000000b00)="817a1d5f7e06a2e5670796da25edb1fb7eadc7de168d0ea7bdabf641d5add96c2b0a153c681b5a4119116cab3dbe699b88391511716834c7650348da533316b2c0c44f376fa4aebdd16f3102bf900e60998a8d0249787e3130d9df3a45175cef44de016a89fbe5cb0263c71cc657f0f2768de23aab7892a860f2caa3b971c98c9924dbdcce1bb7e5e70f67e68c9520e14af9fdd820b664aeb96e2f2598497edecac8326294456e442b6a97482a83fc786628382ae929dd5a385b0dcf86be948b6943139504baaafb61715fd7e9f296a0ca5ad5049904eb56", 0xd8}], 0x1, &(0x7f0000000c40)=[@ip_tos_u8={{0x11, 0x0, 0x1, 0x9}}, @ip_retopts={{0x44, 0x0, 0x7, {[@ssrr={0x89, 0x7, 0x63, [@rand_addr=0x64010105]}, @lsrr={0x83, 0x7, 0xf4, [@rand_addr=0x64010102]}, @timestamp_addr={0x44, 0xc, 0x9, 0x1, 0x0, [{@multicast2, 0x2}]}, @ssrr={0x89, 0x17, 0x72, [@dev={0xac, 0x14, 0x14, 0x43}, @broadcast, @multicast2, @remote, @local]}]}}}], 0x60}}], 0x2, 0x4) r10 = openat$qrtrtun(0xffffffffffffff9c, &(0x7f0000000100), 0x0) pread64(r10, 0x0, 0x18, 0x10000) close_range(r10, 0xffffffffffffffff, 0x0) write$RDMA_USER_CM_CMD_RESOLVE_IP(0xffffffffffffffff, &(0x7f0000000180)={0x18, 0x40, 0xfa00, {{0xa, 0x4e1f, 0xe, @empty, 0x2}, {0xa, 0x4e1d, 0x5, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x3}, 0xffffffffffffffff, 0x7}}, 0x48) sendmsg$NFNL_MSG_ACCT_NEW(0xffffffffffffffff, &(0x7f0000000180)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x34, 0x0, 0x7, 0x301, 0x0, 0x0, {0x5, 0x0, 0x5}, [@NFACCT_FLAGS={0x8, 0x5, 0x1, 0x0, 0x3}, @NFACCT_QUOTA={0xc, 0x6, 0x1, 0x0, 0x81}, @NFACCT_QUOTA={0xc, 0x6, 0x1, 0x0, 0xd}]}, 0x34}, 0x1, 0x0, 0x0, 0x4080}, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$tun-ioctl$TUNSETIFF-socket-socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = socket(0x400000000010, 0x3, 0x0) r2 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r1, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f00000005c0)=@newqdisc={0x38, 0x24, 0x4ee4e6a52ff56541, 0x70bd2d, 0x25dfdbfd, {0x0, 0x0, 0x0, r3, {0x0, 0xfff1}, {0xffff, 0xffff}, {0x5, 0xf}}, [@qdisc_kind_options=@q_multiq={{0xb}, {0x8, 0x2, {0x28}}}]}, 0x38}}, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)=@newtfilter={0x114, 0x2c, 0xd27, 0x70bd28, 0x8000, {0x0, 0x0, 0x0, r3, {0x0, 0xfff2}, {}, {0xa, 0x6}}, [@filter_kind_options=@f_flower={{0xb}, {0xe4, 0x2, [@TCA_FLOWER_KEY_ENC_OPTS_MASK={0x8, 0x55, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPTS_GENEVE={0x4, 0x21}]}, @TCA_FLOWER_KEY_ENC_OPTS={0xd8, 0x54, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPTS_VXLAN={0x0, 0x2, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x18cc}, @TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x7fff}, @TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x4}]}, @TCA_FLOWER_KEY_ENC_OPTS_GENEVE={0x2c, 0x1, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0x6}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0xf71}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA={0x0, 0x3, 0x94}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE={0x5, 0x2, 0x2}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0x80}]}, @TCA_FLOWER_KEY_ENC_OPTS_ERSPAN={0x54, 0x3, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0xfc}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x81}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR={0x5, 0x3, 0x9}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x401}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0x25}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x3}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0x10}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER={0x5, 0x1, 0x1}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER={0x5}]}]}]}}]}, 0x114}, 0x1, 0x0, 0x0, 0x22044028}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$tun-socket$inet6_icmp_raw-ioctl$TUNSETIFF-socket$kcm-ioctl$SIOCSIFHWADDR-write$tun-readv detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x40241, 0x0) r1 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0xc201}) r2 = socket$kcm(0x2, 0xa, 0x2) ioctl$SIOCSIFHWADDR(r2, 0x8914, &(0x7f0000000180)={'syzkaller1\x00', @link_local}) write$tun(r0, &(0x7f0000000300)=ANY=[@ANYBLOB="000086dd03000a000000140000006c07010033d43afffe800000000000000000000000000010ff020000000000000000000000000001"], 0x340a) readv(r1, &(0x7f0000000840)=[{&(0x7f0000000140)=""/32, 0x20}], 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): socketpair$unix-syz_open_dev$usbfs-syz_init_net_socket$x25-socket$inet6-openat$sw_sync-openat$sw_sync-ioctl$SW_SYNC_IOC_CREATE_FENCE-ioctl$SW_SYNC_IOC_CREATE_FENCE-ioctl$SYNC_IOC_MERGE-ioctl$SYNC_IOC_MERGE-accept4$x25-syz_open_dev$usbfs-ioctl$USBDEVFS_SUBMITURB-openat$rdma_cm-sendmsg$nl_xfrm-getuid-mount$overlay-socket-sendmmsg$inet-openat$qrtrtun-pread64-close_range-write$RDMA_USER_CM_CMD_RESOLVE_IP-sendmsg$NFNL_MSG_ACCT_NEW-close_range detailed listing: executing program 0: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) syz_open_dev$usbfs(&(0x7f0000000080), 0x75, 0x109301) r1 = syz_init_net_socket$x25(0x9, 0x5, 0x0) socket$inet6(0xa, 0x800000000000002, 0x0) r2 = openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r3 = openat$sw_sync(0xffffffffffffff9c, &(0x7f0000000ac0), 0x40000, 0x0) ioctl$SW_SYNC_IOC_CREATE_FENCE(r3, 0xc0285700, &(0x7f0000000040)={0x4, "abacd211119ca94c63377526aeb5ab2c7b9ca5fa07558139ede6dc06270ee042", 0xffffffffffffffff}) ioctl$SW_SYNC_IOC_CREATE_FENCE(r2, 0xc0285700, &(0x7f0000000100)={0x8, "b546baa5cc590d3033de259c2996817bb959ebab028deda501009bdeffafde25", 0xffffffffffffffff}) ioctl$SYNC_IOC_MERGE(r4, 0xc0303e03, &(0x7f00000001c0)={"0080bced01eb0100000000000000000700000000000000c900", r5, 0xffffffffffffffff}) ioctl$SYNC_IOC_MERGE(r4, 0xc0303e03, &(0x7f00000000c0)={"fd5402757ac648cf2920e38afac94e776d5bcb702f5bd18722ca3c56bc46e28b", r6}) accept4$x25(r1, 0x0, 0x0, 0x80000) r7 = syz_open_dev$usbfs(&(0x7f0000000040), 0x0, 0x4000) ioctl$USBDEVFS_SUBMITURB(r7, 0x802c550a, &(0x7f0000000500)=@urb_type_control={0x2, {0x0, 0x1}, 0x7, 0xc5, &(0x7f0000000000)={0x80, 0x14, 0xf801, 0x200, 0x7}, 0x8, 0x8004, 0x0, 0x0, 0x6f, 0x5ffffff9, 0x0}) openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0) sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000480)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000840)=@updpolicy={0xf8, 0x19, 0x1, 0x0, 0x0, {{@in, @in6=@ipv4={'\x00', '\xff\xff', @multicast1}, 0x0, 0x0, 0xfffd, 0x0, 0xa}, {0x0, 0x7, 0x0, 0x7fffffff, 0x0, 0x2}, {0xfffffffffffffffe, 0xffffffffffffffff}, 0x0, 0xfffffffc, 0x1, 0x0, 0x0, 0x3}, [@tmpl={0x44, 0x5, [{{@in6=@rand_addr=' \x01\x00', 0x2, 0x2b}, 0xa, @in6=@private1, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x8001}]}]}, 0xf8}, 0x1, 0x0, 0x0, 0xc1}, 0x0) r8 = getuid() mount$overlay(0x0, &(0x7f0000000280)='./file0\x00', &(0x7f00000002c0), 0x2000, &(0x7f0000000340)={[{@xino_on}, {@workdir={'workdir', 0x3d, './file0'}}], [{@fscontext={'fscontext', 0x3d, 'unconfined_u'}}, {@euid_eq={'euid', 0x3d, r8}}]}) r9 = socket(0x2, 0x3, 0xff) sendmmsg$inet(r9, &(0x7f0000000cc0)=[{{&(0x7f0000000240)={0x2, 0x4e24, @rand_addr=0x64010101}, 0x10, &(0x7f0000000640)=[{&(0x7f0000000300)="028d8cbfd9bbf7df020797310a2bb2d6", 0x10}, {&(0x7f00000003c0)="cb82278ec04d46183befda756be78eb919329de663f5471bf5bb05e7c2842e3abb4608acdfad3c49e06cbf", 0x2b}, {&(0x7f0000000540)="9ab738cfd5eb4561f4ae10285eed1dd7ed44b889643ecd841942ca655597790a65ea42565472fa7771ac55779b964338f1f76b8e5e12961d07cb7249b710a1b3a63a58af87af8ec75ad30e88e95d3db81cc517948d9f03797e1264f2bc3ea74e24caa089acca463e23eacca179c468a3367e3d3a910786a5e25f1b60c5e7d2580c82c1252b7cd547aeb7fd526b7a4f7c3b451b5bbb3f71cc6ca433b9c0cf9e9ed1810e12f5a6970b5b73a5258c9ad7cfbd138cd4ada99787256761866110bc35d37718e06caaf25bc725d2cb56814f15c5b4dfc26ad6a59aa52124f79c08", 0xde}], 0x3, &(0x7f0000000940)=[@ip_retopts={{0x70, 0x0, 0x7, {[@ra={0x94, 0x4}, @timestamp_prespec={0x44, 0x1c, 0xad, 0x3, 0x3, [{@multicast1, 0x9}, {@private=0xa010101, 0x5}, {@local, 0xaa}]}, @rr={0x7, 0xf, 0xab, [@multicast1, @rand_addr=0x64010100, @multicast2]}, @timestamp_addr={0x44, 0x2c, 0x89, 0x1, 0x5, [{@dev={0xac, 0x14, 0x14, 0x13}, 0x6}, {@broadcast, 0x2}, {@multicast1, 0x7}, {@rand_addr=0x64010101, 0xb}, {@local, 0x800}]}, @lsrr={0x83, 0x3, 0xb6}]}}}, @ip_ttl={{0x14, 0x0, 0x2, 0x1}}, @ip_retopts={{0x30, 0x0, 0x7, {[@cipso={0x86, 0x1b, 0x2, [{0x7, 0x8, "a6655fff2e28"}, {0x0, 0xd, "7420afdc505f8d3d0b5fc6"}]}, @end, @ra={0x94, 0x4}]}}}, @ip_pktinfo={{0x1c, 0x0, 0x8, {0x0, @broadcast, @dev={0xac, 0x14, 0x14, 0x12}}}}, @ip_retopts={{0x34, 0x0, 0x7, {[@timestamp={0x44, 0x8, 0x4d, 0x0, 0x5, [0x9]}, @noop, @rr={0x7, 0x1b, 0x32, [@local, @local, @initdev={0xac, 0x1e, 0x0, 0x0}, @private=0xa010102, @empty, @remote]}]}}}, @ip_tos_u8={{0x11, 0x0, 0x1, 0x6}}], 0x128}}, {{&(0x7f0000000a80)={0x2, 0x4e24, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x10, &(0x7f0000000c00)=[{&(0x7f0000000b00)="817a1d5f7e06a2e5670796da25edb1fb7eadc7de168d0ea7bdabf641d5add96c2b0a153c681b5a4119116cab3dbe699b88391511716834c7650348da533316b2c0c44f376fa4aebdd16f3102bf900e60998a8d0249787e3130d9df3a45175cef44de016a89fbe5cb0263c71cc657f0f2768de23aab7892a860f2caa3b971c98c9924dbdcce1bb7e5e70f67e68c9520e14af9fdd820b664aeb96e2f2598497edecac8326294456e442b6a97482a83fc786628382ae929dd5a385b0dcf86be948b6943139504baaafb61715fd7e9f296a0ca5ad5049904eb56", 0xd8}], 0x1, &(0x7f0000000c40)=[@ip_tos_u8={{0x11, 0x0, 0x1, 0x9}}, @ip_retopts={{0x44, 0x0, 0x7, {[@ssrr={0x89, 0x7, 0x63, [@rand_addr=0x64010105]}, @lsrr={0x83, 0x7, 0xf4, [@rand_addr=0x64010102]}, @timestamp_addr={0x44, 0xc, 0x9, 0x1, 0x0, [{@multicast2, 0x2}]}, @ssrr={0x89, 0x17, 0x72, [@dev={0xac, 0x14, 0x14, 0x43}, @broadcast, @multicast2, @remote, @local]}]}}}], 0x60}}], 0x2, 0x4) r10 = openat$qrtrtun(0xffffffffffffff9c, &(0x7f0000000100), 0x0) pread64(r10, 0x0, 0x18, 0x10000) close_range(r10, 0xffffffffffffffff, 0x0) write$RDMA_USER_CM_CMD_RESOLVE_IP(0xffffffffffffffff, &(0x7f0000000180)={0x18, 0x40, 0xfa00, {{0xa, 0x4e1f, 0xe, @empty, 0x2}, {0xa, 0x4e1d, 0x5, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x3}, 0xffffffffffffffff, 0x7}}, 0x48) sendmsg$NFNL_MSG_ACCT_NEW(0xffffffffffffffff, &(0x7f0000000180)={&(0x7f00000000c0)={0x10, 0x0, 0x0, 0x200}, 0xc, &(0x7f0000000140)={&(0x7f0000000100)={0x34, 0x0, 0x7, 0x301, 0x0, 0x0, {0x5, 0x0, 0x5}, [@NFACCT_FLAGS={0x8, 0x5, 0x1, 0x0, 0x3}, @NFACCT_QUOTA={0xc, 0x6, 0x1, 0x0, 0x81}, @NFACCT_QUOTA={0xc, 0x6, 0x1, 0x0, 0xd}]}, 0x34}, 0x1, 0x0, 0x0, 0x4080}, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): openat$tun-ioctl$TUNSETIFF-socket-socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = socket(0x400000000010, 0x3, 0x0) r2 = socket$unix(0x1, 0x5, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r1, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f00000005c0)=@newqdisc={0x38, 0x24, 0x4ee4e6a52ff56541, 0x70bd2d, 0x25dfdbfd, {0x0, 0x0, 0x0, r3, {0x0, 0xfff1}, {0xffff, 0xffff}, {0x5, 0xf}}, [@qdisc_kind_options=@q_multiq={{0xb}, {0x8, 0x2, {0x28}}}]}, 0x38}}, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000440)={&(0x7f0000000480)=@newtfilter={0x114, 0x2c, 0xd27, 0x70bd28, 0x8000, {0x0, 0x0, 0x0, r3, {0x0, 0xfff2}, {}, {0xa, 0x6}}, [@filter_kind_options=@f_flower={{0xb}, {0xe4, 0x2, [@TCA_FLOWER_KEY_ENC_OPTS_MASK={0x8, 0x55, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPTS_GENEVE={0x4, 0x21}]}, @TCA_FLOWER_KEY_ENC_OPTS={0xd8, 0x54, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPTS_VXLAN={0x0, 0x2, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x18cc}, @TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x7fff}, @TCA_FLOWER_KEY_ENC_OPT_VXLAN_GBP={0x0, 0x1, 0x4}]}, @TCA_FLOWER_KEY_ENC_OPTS_GENEVE={0x2c, 0x1, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0x6}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0xf71}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_DATA={0x0, 0x3, 0x94}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_TYPE={0x5, 0x2, 0x2}, @TCA_FLOWER_KEY_ENC_OPT_GENEVE_CLASS={0x6, 0x1, 0x80}]}, @TCA_FLOWER_KEY_ENC_OPTS_ERSPAN={0x54, 0x3, 0x0, 0x1, [@TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0xfc}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x81}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_DIR={0x5, 0x3, 0x9}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x401}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0x25}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_INDEX={0x8, 0x2, 0x3}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_HWID={0x5, 0x4, 0x10}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER={0x5, 0x1, 0x1}, @TCA_FLOWER_KEY_ENC_OPT_ERSPAN_VER={0x5}]}]}]}}]}, 0x114}, 0x1, 0x0, 0x0, 0x22044028}, 0x0) VM was preempted during syz execution: failed to run command in VM: instance is preempted, retrying program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program crashed: INFO: task hung in cangw_pernet_exit single: successfully extracted reproducer found reproducer with 6 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-mount-openat-mprotect detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-mount-openat-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-mount-mprotect-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(0xffffffffffffffff, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mkdirat-openat-mprotect-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mount-mount-openat-mprotect-write detailed listing: executing program 0: mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program crashed: INFO: task hung in uevent_show testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, 0x0, 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, 0x0, &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0), 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program crashed: INFO: task hung in regdb_fw_cb validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program crashed: INFO: task hung in wg_netns_pre_exit validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program did not crash validation run: crashed=false testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-openat-mprotect-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1) write(r0, &(0x7f00000000c0)='/', 0x1) program crashed: INFO: task hung in netdev_run_todo validation run: crashed=true reproducing took 3h16m24.700259456s repro crashed as (corrupted=false): INFO: task kworker/u4:0:9 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack:23920 pid: 9 ppid: 2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 netdev_run_todo+0x8dd/0xac0 net/core/dev.c:10722 nsim_destroy+0xb2/0x150 drivers/net/netdevsim/netdev.c:387 __nsim_dev_port_del+0x155/0x1c0 drivers/net/netdevsim/dev.c:1349 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1362 [inline] nsim_dev_reload_destroy+0x160/0x230 drivers/net/netdevsim/dev.c:1561 nsim_dev_reload_down+0xf9/0x160 drivers/net/netdevsim/dev.c:883 devlink_reload+0x253/0x770 net/core/devlink.c:3963 devlink_pernet_pre_exit+0x1aa/0x310 net/core/devlink.c:11543 ops_pre_exit_list net/core/net_namespace.c:162 [inline] cleanup_net+0x58e/0xba0 net/core/net_namespace.c:615 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/u4:3:1172 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:3 state:D stack:20992 pid: 1172 ppid: 2 flags:0x00004000 Workqueue: events_unbound linkwatch_event Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 linkwatch_event+0xa/0x50 net/core/link_watch.c:251 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task udevd:3559 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:25008 pid: 3559 ppid: 1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 device_lock include/linux/device.h:809 [inline] uevent_show+0x16c/0x320 drivers/base/core.c:2408 dev_attr_show+0x50/0xb0 drivers/base/core.c:2110 sysfs_kf_seq_show+0x316/0x4c0 fs/sysfs/file.c:61 seq_read_iter+0x460/0xc50 fs/seq_file.c:230 call_read_iter include/linux/fs.h:2167 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0x75e/0xd50 fs/read_write.c:485 ksys_read+0x153/0x260 fs/read_write.c:623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f9a9ec2b407 RSP: 002b:00007fff1359f990 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f9a9eb3d880 RCX: 00007f9a9ec2b407 RDX: 0000000000001000 RSI: 0000564f7dbcc040 RDI: 000000000000000c RBP: 00007f9a9ed73ff0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a R13: 00007f9a9ed73ea0 R14: 0000000000000000 R15: 0000564f7dbbd040 INFO: task dhcpcd:3851 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:25488 pid: 3851 ppid: 1 flags:0x00004202 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 vlan_ioctl_handler+0xef/0x5d0 net/8021q/vlan.c:581 sock_ioctl+0x23b/0x700 net/socket.c:1231 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8d93e38378 RSP: 002b:00007ffd0ab4bf78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000055ac573f0900 RCX: 00007f8d93e38378 RDX: 00007ffd0ab4bf80 RSI: 0000000000008982 RDI: 000000000000000f RBP: 00007ffd0ab4bf80 R08: 1999999999999999 R09: 0000000000000000 R10: 00007f8d93eb2fe0 R11: 0000000000000246 R12: 0000000000000002 R13: 000055ac57464d08 R14: 00007ffd0ab4c9d0 R15: 000055ac573f0900 INFO: task kworker/0:10:4300 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:10 state:D stack:24464 pid: 4300 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/0:19:4309 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:19 state:D stack:25184 pid: 4309 ppid: 2 flags:0x00004000 Workqueue: events nsim_dev_trap_report_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/1:6:4384 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:6 state:D stack:25296 pid: 4384 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task syz-executor:5655 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22032 pid: 5655 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 ieee80211_rate_control_ops_get net/mac80211/rate.c:192 [inline] rate_control_alloc net/mac80211/rate.c:239 [inline] ieee80211_init_rate_ctrl_alg+0x171/0x5e0 net/mac80211/rate.c:983 ieee80211_register_hw+0x23c6/0x3a60 net/mac80211/main.c:1252 mac80211_hwsim_new_radio+0x209d/0x4050 drivers/net/wireless/mac80211_hwsim.c:3373 hwsim_new_radio_nl+0xa7d/0xc50 drivers/net/wireless/mac80211_hwsim.c:3949 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0xd0b/0xfa0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x1e9/0x430 net/netlink/af_netlink.c:2519 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x78f/0x940 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x8ba/0xbe0 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:706 [inline] __sock_sendmsg net/socket.c:718 [inline] __sys_sendto+0x46d/0x620 net/socket.c:2073 __do_sys_sendto net/socket.c:2085 [inline] __se_sys_sendto net/socket.c:2081 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2081 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f760e8fc90e RSP: 002b:00007fff485deee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055558c729500 RCX: 00007f760e8fc90e RDX: 0000000000000024 RSI: 00007f760f6f2670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fff485def64 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f760f6f2670 R15: 0000000000000000 INFO: task syz-executor:5758 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22736 pid: 5758 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 devlink_nl_port_fill+0x346/0x8c0 net/core/devlink.c:995 devlink_port_notify+0x4c/0x170 net/core/devlink.c:1052 __devlink_port_type_set net/core/devlink.c:9163 [inline] devlink_port_type_eth_set+0x30d/0x470 net/core/devlink.c:9219 __nsim_dev_port_add+0x82e/0xa80 drivers/net/netdevsim/dev.c:1325 nsim_dev_port_add_all+0x37/0x100 drivers/net/netdevsim/dev.c:1372 nsim_dev_probe+0x75e/0x9d0 drivers/net/netdevsim/dev.c:1513 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 driver_probe_device+0x4f/0x420 drivers/base/dd.c:805 __device_attach_driver+0x2b0/0x500 drivers/base/dd.c:927 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429 __device_attach+0x2a7/0x480 drivers/base/dd.c:999 bus_probe_device+0xba/0x1d0 drivers/base/bus.c:489 device_add+0xbcf/0x1050 drivers/base/core.c:3427 nsim_bus_dev_new drivers/net/netdevsim/bus.c:435 [inline] new_device_store+0x3e3/0x770 drivers/net/netdevsim/bus.c:302 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1ef8e5e90e RSP: 002b:00007ffed92ce488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00005555851ff500 RCX: 00007f1ef8e5e90e RDX: 0000000000000003 RSI: 00007ffed92ce510 RDI: 0000000000000005 RBP: 00007f1ef8f358cb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffed92ce510 R14: 00007f1ef9c54620 R15: 0000000000000003 INFO: task syz-executor:5761 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22736 pid: 5761 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f6615ef390e RSP: 002b:00007ffebc58ea38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555582b31500 RCX: 00007f6615ef390e RDX: 0000000000000001 RSI: 00007ffebc58eac0 RDI: 0000000000000005 RBP: 00007f6615fca8a7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffebc58eac0 R14: 00007f6616ce9620 R15: 0000000000000003 Showing all locks held in the system: 7 locks held by kworker/u4:0/9: #0: ffff888016dcd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90000ce7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d441a50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x148/0xba0 net/core/net_namespace.c:589 #3: ffffffff8d472f68 (devlink_mutex){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xa4/0x310 net/core/devlink.c:11534 #4: ffff88807cb6b660 (&nsim_bus_dev->nsim_bus_reload_lock){+.+.}-{3:3}, at: nsim_dev_reload_down+0x57/0x160 drivers/net/netdevsim/dev.c:870 #5: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1359 [inline] #5: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0x109/0x230 drivers/net/netdevsim/dev.c:1561 #6: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x8dd/0xac0 net/core/dev.c:10722 1 lock held by khungtaskd/27: #0: ffffffff8c31ef60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 3 locks held by kworker/u4:3/1172: #0: ffff888016c79138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90005467d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251 3 locks held by kworker/0:3/1335: #0: ffff888016c71938 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90005b67d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x82/0xa90 net/wireless/reg.c:2437 4 locks held by udevd/3559: #0: ffff88801e92bd58 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0x9d/0xc50 fs/seq_file.c:182 #1: ffff88801faed888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x55/0x3c0 fs/kernfs/file.c:112 #2: ffff8880768ee830 (kn->active#32){++++}-{0:0}, at: kernfs_seq_start+0x75/0x3c0 fs/kernfs/file.c:113 #3: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:809 [inline] #3: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: uevent_show+0x16c/0x320 drivers/base/core.c:2408 2 locks held by dhcpcd/3851: #0: ffffffff8d435d28 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x21b/0x700 net/socket.c:1229 #1: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0xef/0x5d0 net/8021q/vlan.c:581 2 locks held by getty/3944: #0: ffff88802c6ae098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900026562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158 3 locks held by kworker/0:10/4300: #0: ffff88802b645938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc900030bfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 3 locks held by kworker/0:19/4309: #0: ffff888016c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc9000314fd00 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757 3 locks held by kworker/1:6/4384: #0: ffff88802b645938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc900049efd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 4 locks held by syz-executor/5655: #0: ffffffff8d4aa630 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802 #1: ffffffff8d4aa488 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff8d4aa488 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x161/0xfa0 net/netlink/genetlink.c:790 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_register_hw+0x239f/0x3a60 net/mac80211/main.c:1251 #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: ieee80211_rate_control_ops_get net/mac80211/rate.c:192 [inline] #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: rate_control_alloc net/mac80211/rate.c:239 [inline] #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: ieee80211_init_rate_ctrl_alg+0x171/0x5e0 net/mac80211/rate.c:983 6 locks held by syz-executor/5758: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805be40888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d1d8 (kn->active#363){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x14c/0x770 drivers/net/netdevsim/bus.c:295 #4: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:809 [inline] #4: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: __device_attach+0x85/0x480 drivers/base/dd.c:974 #5: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: devlink_nl_port_fill+0x346/0x8c0 net/core/devlink.c:995 4 locks held by syz-executor/5761: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805cbc1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d2c0 (kn->active#362){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 4 locks held by syz-executor/5764: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805bff6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d2c0 (kn->active#362){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 5 locks held by syz.2.74/5902: #0: ffff888024abd4f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056 #1: ffff8880761c8460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #2: ffff88801b3cc488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #3: ffff88801abbc918 (kn->active){++++}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #4: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: kernel_param_lock kernel/params.c:598 [inline] #4: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: param_attr_store+0xcb/0x300 kernel/params.c:583 1 lock held by syz-executor/5904: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5907: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5910: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5913: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5916: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5919: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5922: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5925: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5928: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5931: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5934: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe1b/0xe60 kernel/hung_task.c:369 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4313 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:168 [inline] RIP: 0010:unwind_next_frame+0x1a6/0x1cf0 arch/x86/kernel/unwind_orc.c:448 Code: 46 ff 39 e8 0f 86 56 14 00 00 89 e8 4c 8d 24 85 5c fc 9e 8e 4c 89 e0 48 c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 0f b6 04 38 <84> c0 0f 85 dd 15 00 00 45 8b 24 24 89 e8 ff c0 4c 8d 2c 85 5c fc RSP: 0018:ffffc9000319eef0 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: ffffc9000319ef88 RCX: ffffffff962f5f00 RDX: dffffc0000000000 RSI: 0000000000090081 RDI: 0000000000000001 RBP: 00000000000064c6 R08: ffffc9000319f050 R09: 0000000000000002 R10: dffffc0000000000 R11: fffff52000633dfd R12: ffffffff8ea08f74 R13: ffffc9000319f300 R14: ffffffff8164c664 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb04289e000 CR3: 000000007dc52000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack+0x35/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348 kvfree_call_rcu+0x105/0x7f0 kernel/rcu/tree.c:3600 cfg80211_update_known_bss+0x184/0xb60 net/wireless/scan.c:-1 cfg80211_bss_update+0x156/0x21a0 net/wireless/scan.c:1830 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2552 [inline] cfg80211_inform_bss_frame_data+0x88d/0x1ed0 net/wireless/scan.c:2585 ieee80211_bss_info_update+0x6ba/0xa80 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline] ieee80211_ibss_rx_queued_mgmt+0x1763/0x2b50 net/mac80211/ibss.c:1643 ieee80211_iface_process_skb net/mac80211/iface.c:1465 [inline] ieee80211_iface_work+0x714/0xc50 net/mac80211/iface.c:1519 cfg80211_wiphy_work+0x224/0x260 net/wireless/core.c:433 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 final repro crashed as (corrupted=false): INFO: task kworker/u4:0:9 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack:23920 pid: 9 ppid: 2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 netdev_run_todo+0x8dd/0xac0 net/core/dev.c:10722 nsim_destroy+0xb2/0x150 drivers/net/netdevsim/netdev.c:387 __nsim_dev_port_del+0x155/0x1c0 drivers/net/netdevsim/dev.c:1349 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1362 [inline] nsim_dev_reload_destroy+0x160/0x230 drivers/net/netdevsim/dev.c:1561 nsim_dev_reload_down+0xf9/0x160 drivers/net/netdevsim/dev.c:883 devlink_reload+0x253/0x770 net/core/devlink.c:3963 devlink_pernet_pre_exit+0x1aa/0x310 net/core/devlink.c:11543 ops_pre_exit_list net/core/net_namespace.c:162 [inline] cleanup_net+0x58e/0xba0 net/core/net_namespace.c:615 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/u4:3:1172 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:3 state:D stack:20992 pid: 1172 ppid: 2 flags:0x00004000 Workqueue: events_unbound linkwatch_event Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 linkwatch_event+0xa/0x50 net/core/link_watch.c:251 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task udevd:3559 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:25008 pid: 3559 ppid: 1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 device_lock include/linux/device.h:809 [inline] uevent_show+0x16c/0x320 drivers/base/core.c:2408 dev_attr_show+0x50/0xb0 drivers/base/core.c:2110 sysfs_kf_seq_show+0x316/0x4c0 fs/sysfs/file.c:61 seq_read_iter+0x460/0xc50 fs/seq_file.c:230 call_read_iter include/linux/fs.h:2167 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0x75e/0xd50 fs/read_write.c:485 ksys_read+0x153/0x260 fs/read_write.c:623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f9a9ec2b407 RSP: 002b:00007fff1359f990 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f9a9eb3d880 RCX: 00007f9a9ec2b407 RDX: 0000000000001000 RSI: 0000564f7dbcc040 RDI: 000000000000000c RBP: 00007f9a9ed73ff0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a R13: 00007f9a9ed73ea0 R14: 0000000000000000 R15: 0000564f7dbbd040 INFO: task dhcpcd:3851 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:dhcpcd state:D stack:25488 pid: 3851 ppid: 1 flags:0x00004202 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 vlan_ioctl_handler+0xef/0x5d0 net/8021q/vlan.c:581 sock_ioctl+0x23b/0x700 net/socket.c:1231 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8d93e38378 RSP: 002b:00007ffd0ab4bf78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000055ac573f0900 RCX: 00007f8d93e38378 RDX: 00007ffd0ab4bf80 RSI: 0000000000008982 RDI: 000000000000000f RBP: 00007ffd0ab4bf80 R08: 1999999999999999 R09: 0000000000000000 R10: 00007f8d93eb2fe0 R11: 0000000000000246 R12: 0000000000000002 R13: 000055ac57464d08 R14: 00007ffd0ab4c9d0 R15: 000055ac573f0900 INFO: task kworker/0:10:4300 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:10 state:D stack:24464 pid: 4300 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/0:19:4309 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:19 state:D stack:25184 pid: 4309 ppid: 2 flags:0x00004000 Workqueue: events nsim_dev_trap_report_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task kworker/1:6:4384 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:6 state:D stack:25296 pid: 4384 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 INFO: task syz-executor:5655 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22032 pid: 5655 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 ieee80211_rate_control_ops_get net/mac80211/rate.c:192 [inline] rate_control_alloc net/mac80211/rate.c:239 [inline] ieee80211_init_rate_ctrl_alg+0x171/0x5e0 net/mac80211/rate.c:983 ieee80211_register_hw+0x23c6/0x3a60 net/mac80211/main.c:1252 mac80211_hwsim_new_radio+0x209d/0x4050 drivers/net/wireless/mac80211_hwsim.c:3373 hwsim_new_radio_nl+0xa7d/0xc50 drivers/net/wireless/mac80211_hwsim.c:3949 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline] genl_family_rcv_msg net/netlink/genetlink.c:775 [inline] genl_rcv_msg+0xd0b/0xfa0 net/netlink/genetlink.c:792 netlink_rcv_skb+0x1e9/0x430 net/netlink/af_netlink.c:2519 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x78f/0x940 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x8ba/0xbe0 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:706 [inline] __sock_sendmsg net/socket.c:718 [inline] __sys_sendto+0x46d/0x620 net/socket.c:2073 __do_sys_sendto net/socket.c:2085 [inline] __se_sys_sendto net/socket.c:2081 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2081 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f760e8fc90e RSP: 002b:00007fff485deee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055558c729500 RCX: 00007f760e8fc90e RDX: 0000000000000024 RSI: 00007f760f6f2670 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fff485def64 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00007f760f6f2670 R15: 0000000000000000 INFO: task syz-executor:5758 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22736 pid: 5758 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 devlink_nl_port_fill+0x346/0x8c0 net/core/devlink.c:995 devlink_port_notify+0x4c/0x170 net/core/devlink.c:1052 __devlink_port_type_set net/core/devlink.c:9163 [inline] devlink_port_type_eth_set+0x30d/0x470 net/core/devlink.c:9219 __nsim_dev_port_add+0x82e/0xa80 drivers/net/netdevsim/dev.c:1325 nsim_dev_port_add_all+0x37/0x100 drivers/net/netdevsim/dev.c:1372 nsim_dev_probe+0x75e/0x9d0 drivers/net/netdevsim/dev.c:1513 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x276/0xc70 drivers/base/dd.c:595 __driver_probe_device+0x1f5/0x390 drivers/base/dd.c:775 driver_probe_device+0x4f/0x420 drivers/base/dd.c:805 __device_attach_driver+0x2b0/0x500 drivers/base/dd.c:927 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429 __device_attach+0x2a7/0x480 drivers/base/dd.c:999 bus_probe_device+0xba/0x1d0 drivers/base/bus.c:489 device_add+0xbcf/0x1050 drivers/base/core.c:3427 nsim_bus_dev_new drivers/net/netdevsim/bus.c:435 [inline] new_device_store+0x3e3/0x770 drivers/net/netdevsim/bus.c:302 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1ef8e5e90e RSP: 002b:00007ffed92ce488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00005555851ff500 RCX: 00007f1ef8e5e90e RDX: 0000000000000003 RSI: 00007ffed92ce510 RDI: 0000000000000005 RBP: 00007f1ef8f358cb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00007ffed92ce510 R14: 00007f1ef9c54620 R15: 0000000000000003 INFO: task syz-executor:5761 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22736 pid: 5761 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 schedule+0x11b/0x1e0 kernel/sched/core.c:6478 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f6615ef390e RSP: 002b:00007ffebc58ea38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555582b31500 RCX: 00007f6615ef390e RDX: 0000000000000001 RSI: 00007ffebc58eac0 RDI: 0000000000000005 RBP: 00007f6615fca8a7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffebc58eac0 R14: 00007f6616ce9620 R15: 0000000000000003 Showing all locks held in the system: 7 locks held by kworker/u4:0/9: #0: ffff888016dcd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90000ce7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d441a50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x148/0xba0 net/core/net_namespace.c:589 #3: ffffffff8d472f68 (devlink_mutex){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xa4/0x310 net/core/devlink.c:11534 #4: ffff88807cb6b660 (&nsim_bus_dev->nsim_bus_reload_lock){+.+.}-{3:3}, at: nsim_dev_reload_down+0x57/0x160 drivers/net/netdevsim/dev.c:870 #5: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1359 [inline] #5: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0x109/0x230 drivers/net/netdevsim/dev.c:1561 #6: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x8dd/0xac0 net/core/dev.c:10722 1 lock held by khungtaskd/27: #0: ffffffff8c31ef60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 3 locks held by kworker/u4:3/1172: #0: ffff888016c79138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90005467d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251 3 locks held by kworker/0:3/1335: #0: ffff888016c71938 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc90005b67d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x82/0xa90 net/wireless/reg.c:2437 4 locks held by udevd/3559: #0: ffff88801e92bd58 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0x9d/0xc50 fs/seq_file.c:182 #1: ffff88801faed888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x55/0x3c0 fs/kernfs/file.c:112 #2: ffff8880768ee830 (kn->active#32){++++}-{0:0}, at: kernfs_seq_start+0x75/0x3c0 fs/kernfs/file.c:113 #3: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:809 [inline] #3: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: uevent_show+0x16c/0x320 drivers/base/core.c:2408 2 locks held by dhcpcd/3851: #0: ffffffff8d435d28 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x21b/0x700 net/socket.c:1229 #1: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0xef/0x5d0 net/8021q/vlan.c:581 2 locks held by getty/3944: #0: ffff88802c6ae098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900026562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x594/0x1a50 drivers/tty/n_tty.c:2158 3 locks held by kworker/0:10/4300: #0: ffff88802b645938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc900030bfd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 3 locks held by kworker/0:19/4309: #0: ffff888016c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc9000314fd00 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffff88805a8b6400 (&nsim_dev->port_list_lock){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757 3 locks held by kworker/1:6/4384: #0: ffff88802b645938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x75c/0xff0 kernel/workqueue.c:-1 #1: ffffc900049efd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x79e/0xff0 kernel/workqueue.c:2285 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1530 net/ipv6/addrconf.c:4120 4 locks held by syz-executor/5655: #0: ffffffff8d4aa630 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802 #1: ffffffff8d4aa488 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: ffffffff8d4aa488 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x161/0xfa0 net/netlink/genetlink.c:790 #2: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_register_hw+0x239f/0x3a60 net/mac80211/main.c:1251 #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: ieee80211_rate_control_ops_get net/mac80211/rate.c:192 [inline] #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: rate_control_alloc net/mac80211/rate.c:239 [inline] #3: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: ieee80211_init_rate_ctrl_alg+0x171/0x5e0 net/mac80211/rate.c:983 6 locks held by syz-executor/5758: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805be40888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d1d8 (kn->active#363){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x14c/0x770 drivers/net/netdevsim/bus.c:295 #4: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:809 [inline] #4: ffff88805659f178 (&dev->mutex){....}-{3:3}, at: __device_attach+0x85/0x480 drivers/base/dd.c:974 #5: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: devlink_nl_port_fill+0x346/0x8c0 net/core/devlink.c:995 4 locks held by syz-executor/5761: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805cbc1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d2c0 (kn->active#362){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 4 locks held by syz-executor/5764: #0: ffff88807f1d2460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #1: ffff88805bff6c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #2: ffff888023f8d2c0 (kn->active#362){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #3: ffffffff8cd8ad28 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd3/0x3a0 drivers/net/netdevsim/bus.c:344 5 locks held by syz.2.74/5902: #0: ffff888024abd4f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 fs/file.c:1056 #1: ffff8880761c8460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x296/0xd70 fs/read_write.c:590 #2: ffff88801b3cc488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1dc/0x500 fs/kernfs/file.c:287 #3: ffff88801abbc918 (kn->active){++++}-{0:0}, at: kernfs_fop_write_iter+0x1fd/0x500 fs/kernfs/file.c:288 #4: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: kernel_param_lock kernel/params.c:598 [inline] #4: ffffffff8c1d4a08 (param_lock){+.+.}-{3:3}, at: param_attr_store+0xcb/0x300 kernel/params.c:583 1 lock held by syz-executor/5904: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5907: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5910: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5913: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5916: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5919: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5922: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5925: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5928: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5931: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 1 lock held by syz-executor/5934: #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d44d988 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x79f/0xf10 net/core/rtnetlink.c:5695 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xe1b/0xe60 kernel/hung_task.c:369 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4313 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:168 [inline] RIP: 0010:unwind_next_frame+0x1a6/0x1cf0 arch/x86/kernel/unwind_orc.c:448 Code: 46 ff 39 e8 0f 86 56 14 00 00 89 e8 4c 8d 24 85 5c fc 9e 8e 4c 89 e0 48 c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 0f b6 04 38 <84> c0 0f 85 dd 15 00 00 45 8b 24 24 89 e8 ff c0 4c 8d 2c 85 5c fc RSP: 0018:ffffc9000319eef0 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: ffffc9000319ef88 RCX: ffffffff962f5f00 RDX: dffffc0000000000 RSI: 0000000000090081 RDI: 0000000000000001 RBP: 00000000000064c6 R08: ffffc9000319f050 R09: 0000000000000002 R10: dffffc0000000000 R11: fffff52000633dfd R12: ffffffff8ea08f74 R13: ffffc9000319f300 R14: ffffffff8164c664 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb04289e000 CR3: 000000007dc52000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack+0x35/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348 kvfree_call_rcu+0x105/0x7f0 kernel/rcu/tree.c:3600 cfg80211_update_known_bss+0x184/0xb60 net/wireless/scan.c:-1 cfg80211_bss_update+0x156/0x21a0 net/wireless/scan.c:1830 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2552 [inline] cfg80211_inform_bss_frame_data+0x88d/0x1ed0 net/wireless/scan.c:2585 ieee80211_bss_info_update+0x6ba/0xa80 net/mac80211/scan.c:190 ieee80211_rx_bss_info net/mac80211/ibss.c:1123 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline] ieee80211_ibss_rx_queued_mgmt+0x1763/0x2b50 net/mac80211/ibss.c:1643 ieee80211_iface_process_skb net/mac80211/iface.c:1465 [inline] ieee80211_iface_work+0x714/0xc50 net/mac80211/iface.c:1519 cfg80211_wiphy_work+0x224/0x260 net/wireless/core.c:433 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287