./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3014160970 <...> [ 50.046063][ T4660] dhcpcd-run-hook (4660) used greatest stack depth: 22320 bytes left forked to background, child pid 4656 [ 53.115730][ T4657] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.136811][ T4657] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.226' (ECDSA) to the list of known hosts. execve("./syz-executor3014160970", ["./syz-executor3014160970"], 0x7ffcb1d3b450 /* 10 vars */) = 0 brk(NULL) = 0x555555cbc000 brk(0x555555cbcc40) = 0x555555cbcc40 arch_prctl(ARCH_SET_FS, 0x555555cbc300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3014160970", 4096) = 28 brk(0x555555cddc40) = 0x555555cddc40 brk(0x555555cde000) = 0x555555cde000 mprotect(0x7f780701d000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=36, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=784, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5081}, "\x01\x02\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00\x06\x00\x01\x00\x1d\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x2e\x00\x00\x00\x98\x02\x06\x00\x14\x00\x01\x00\x08\x00\x01\x00\x01\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x02\x00\x08\x00\x01\x00\x05\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00"...], 4096, 0, NULL, NULL) = 784 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=36, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 access("/proc/net", R_OK) = 0 access("/proc/net/unix", R_OK) = 0 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0b\x00\x00\x00\x06\x00\x0a\x00\xa0\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x00\x00\x00\x00\x0b\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x0c\x00\x01\x00\x02\x00\xaa\xaa\xaa\xaa\xaa\xaa"], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 sendto(3, [{nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=0, ifi_flags=0, ifi_change=0}, [[{nla_len=11, nla_type=IFLA_IFNAME}, "lowpan0"...], [{nla_len=16, nla_type=IFLA_LINKINFO}, [{nla_len=10, nla_type=IFLA_INFO_KIND}, "lowpan"...]], [{nla_len=8, nla_type=IFLA_LINK}, 11]]], 68, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 68 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0c\x00\x00\x00\x06\x00\x0a\x00\xa1\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=if_nametoindex("wpan1"), ifi_flags=IFF_UP, ifi_change=0x1}, [{nla_len=12, nla_type=IFLA_ADDRESS}, 02:01:aa:aa:aa:aa:aa]], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5081}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 close(3) = 0 close(4) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555cbc5d0) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5083] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setsid() = 1 [pid 5083] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5083] unshare(CLONE_NEWNS) = 0 [pid 5083] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5083] unshare(CLONE_NEWIPC) = 0 [pid 5083] unshare(CLONE_NEWCGROUP) = 0 [pid 5083] unshare(CLONE_NEWUTS) = 0 [pid 5083] unshare(CLONE_SYSVSEM) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "16777216", 8) = 8 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "536870912", 9) = 9 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "8192", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5083] close(3) = 0 [pid 5083] getpid() = 1 [pid 5083] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 12]) = 0 [pid 5086] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x68\x74\x62\x00\x1c\x00\x02\x00\x18\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 [pid 5086] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5086] write(6, "19", 2) = 2 syzkaller login: [ 82.878259][ T5086] FAULT_INJECTION: forcing a failure. [ 82.878259][ T5086] name failslab, interval 1, probability 0, space 0, times 1 [ 82.891112][ T5086] CPU: 0 PID: 5086 Comm: syz-executor301 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 82.901237][ T5086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 82.911343][ T5086] Call Trace: [ 82.914644][ T5086] [ 82.917598][ T5086] dump_stack_lvl+0x136/0x150 [ 82.922331][ T5086] should_fail_ex+0x4a3/0x5b0 [ 82.927053][ T5086] should_failslab+0x9/0x20 [ 82.931591][ T5086] __kmem_cache_alloc_node+0x5b/0x330 [ 82.937018][ T5086] ? tcf_exts_init_ex+0xe4/0x5a0 [ 82.942042][ T5086] kmalloc_trace+0x26/0x60 [ 82.946526][ T5086] tcf_exts_init_ex+0xe4/0x5a0 [ 82.951349][ T5086] fl_change+0x56f/0x4ab0 [ 82.955761][ T5086] ? fl_destroy+0x320/0x320 [ 82.960343][ T5086] ? __radix_tree_lookup+0x215/0x2a0 [ 82.965713][ T5086] ? fl_get+0x229/0x3c0 [ 82.969919][ T5086] ? fl_put+0x20/0x20 [ 82.973967][ T5086] tc_new_tfilter+0x97c/0x2290 [ 82.978829][ T5086] ? tc_del_tfilter+0x15d0/0x15d0 [ 82.984026][ T5086] ? mark_lock.part.0+0xee/0x1970 [ 82.989103][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 82.995155][ T5086] ? mark_lock.part.0+0xee/0x1970 [ 83.000241][ T5086] ? print_usage_bug.part.0+0x660/0x660 [ 83.005843][ T5086] ? rtnetlink_rcv_msg+0x956/0xd50 [ 83.011001][ T5086] ? lock_downgrade+0x690/0x690 [ 83.015907][ T5086] ? tc_del_tfilter+0x15d0/0x15d0 [ 83.020988][ T5086] rtnetlink_rcv_msg+0x996/0xd50 [ 83.026024][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.030917][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.036948][ T5086] ? __sys_sendmsg+0xf7/0x1c0 [ 83.041652][ T5086] ? do_syscall_64+0x39/0xb0 [ 83.046271][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.052299][ T5086] netlink_rcv_skb+0x165/0x440 [ 83.057110][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.062002][ T5086] ? netlink_ack+0x1360/0x1360 [ 83.066851][ T5086] ? netlink_deliver_tap+0x1b1/0xcf0 [ 83.072214][ T5086] netlink_unicast+0x547/0x7f0 [ 83.077028][ T5086] ? netlink_attachskb+0x890/0x890 [ 83.082186][ T5086] ? __virt_addr_valid+0x61/0x2e0 [ 83.087290][ T5086] ? __phys_addr_symbol+0x30/0x70 [ 83.092377][ T5086] ? __check_object_size+0x333/0x6e0 [ 83.097750][ T5086] netlink_sendmsg+0x925/0xe30 [ 83.102613][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 83.107629][ T5086] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 83.112988][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 83.118014][ T5086] sock_sendmsg+0xde/0x190 [ 83.122514][ T5086] ____sys_sendmsg+0x71c/0x900 [ 83.127359][ T5086] ? copy_msghdr_from_user+0xfc/0x150 [ 83.132764][ T5086] ? kernel_sendmsg+0x50/0x50 [ 83.137490][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.143518][ T5086] ___sys_sendmsg+0x110/0x1b0 [ 83.148248][ T5086] ? do_recvmmsg+0x6e0/0x6e0 [ 83.152893][ T5086] ? lock_release+0x780/0x780 [ 83.157609][ T5086] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 83.162845][ T5086] ? do_raw_spin_lock+0x124/0x2b0 [ 83.167952][ T5086] ? spin_bug+0x1c0/0x1c0 [ 83.172360][ T5086] ? __fget_light+0x20a/0x270 [ 83.177115][ T5086] __sys_sendmsg+0xf7/0x1c0 [ 83.181722][ T5086] ? __sys_sendmsg_sock+0x40/0x40 [ 83.186813][ T5086] ? lockdep_hardirqs_on+0x7d/0x100 [ 83.192051][ T5086] ? _raw_spin_unlock_irq+0x2e/0x50 [ 83.197304][ T5086] ? ptrace_notify+0xfe/0x140 [ 83.202015][ T5086] do_syscall_64+0x39/0xb0 [ 83.206477][ T5086] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 83.212438][ T5086] RIP: 0033:0x7f7806fa8d19 [ 83.216911][ T5086] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 83.236595][ T5086] RSP: 002b:00007ffdd91b07c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.245039][ T5086] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7806fa8d19 [ 83.253039][ T5086] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 83.261044][ T5086] RBP: 00007ffdd91b0800 R08: 0000000000000002 R09: 00007ffdd91b07f8 [ 83.269046][ T5086] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [pid 5086] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff\x00\x00\x0b\x00\x01\x00\x66\x6c\x6f\x77\x65\x72\x00\x00\x10\x00\x02\x00\x0a\x00\x04\x00\xaa\xaa\xaa\xaa\xaa\xaa\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [pid 5086] close(3) = 0 [pid 5086] close(4) = 0 [pid 5086] close(5) = 0 [pid 5086] close(6) = 0 [pid 5086] close(7) = -1 EBADF (Bad file descriptor) [pid 5086] close(8) = -1 EBADF (Bad file descriptor) [pid 5086] close(9) = -1 EBADF (Bad file descriptor) [pid 5086] close(10) = -1 EBADF (Bad file descriptor) [pid 5086] close(11) = -1 EBADF (Bad file descriptor) [pid 5086] close(12) = -1 EBADF (Bad file descriptor) [pid 5086] close(13) = -1 EBADF (Bad file descriptor) [pid 5086] close(14) = -1 EBADF (Bad file descriptor) [pid 5086] close(15) = -1 EBADF (Bad file descriptor) [pid 5086] close(16) = -1 EBADF (Bad file descriptor) [pid 5086] close(17) = -1 EBADF (Bad file descriptor) [pid 5086] close(18) = -1 EBADF (Bad file descriptor) [pid 5086] close(19) = -1 EBADF (Bad file descriptor) [pid 5086] close(20) = -1 EBADF (Bad file descriptor) [pid 5086] close(21) = -1 EBADF (Bad file descriptor) [pid 5086] close(22) = -1 EBADF (Bad file descriptor) [pid 5086] close(23) = -1 EBADF (Bad file descriptor) [pid 5086] close(24) = -1 EBADF (Bad file descriptor) [pid 5086] close(25) = -1 EBADF (Bad file descriptor) [pid 5086] close(26) = -1 EBADF (Bad file descriptor) [pid 5086] close(27) = -1 EBADF (Bad file descriptor) [pid 5086] close(28) = -1 EBADF (Bad file descriptor) [pid 5086] close(29) = -1 EBADF (Bad file descriptor) [pid 5086] exit_group(0) = ? [pid 5086] +++ exited with 0 +++ [pid 5083] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5083] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5083] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5087 attached , child_tidptr=0x555555cbc5d0) = 3 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5087] setpgid(0, 0) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5087] write(3, "1000", 4) = 4 [pid 5087] close(3) = 0 [pid 5087] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5087] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5087] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 5 [pid 5087] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=NULL, iov_len=320}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EFAULT (Bad address) [pid 5087] getsockname(5, {sa_family=AF_NETLINK, nl_pid=3, nl_groups=00000000}, [171 => 12]) = 0 [pid 5087] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x68\x74\x62\x00\x1c\x00\x02\x00\x18\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 [pid 5087] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5087] write(6, "19", 2) = 2 [pid 5087] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff\x00\x00\x0b\x00\x01\x00\x66\x6c\x6f\x77\x65\x72\x00\x00\x10\x00\x02\x00\x0a\x00\x04\x00\xaa\xaa\xaa\xaa\xaa\xaa\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [pid 5087] close(3) = 0 [pid 5087] close(4) = 0 [pid 5087] close(5) = 0 [pid 5087] close(6) = 0 [pid 5087] close(7) = -1 EBADF (Bad file descriptor) [pid 5087] close(8) = -1 EBADF (Bad file descriptor) [pid 5087] close(9) = -1 EBADF (Bad file descriptor) [pid 5087] close(10) = -1 EBADF (Bad file descriptor) [pid 5087] close(11) = -1 EBADF (Bad file descriptor) [pid 5087] close(12) = -1 EBADF (Bad file descriptor) [pid 5087] close(13) = -1 EBADF (Bad file descriptor) [pid 5087] close(14) = -1 EBADF (Bad file descriptor) [pid 5087] close(15) = -1 EBADF (Bad file descriptor) [pid 5087] close(16) = -1 EBADF (Bad file descriptor) [pid 5087] close(17) = -1 EBADF (Bad file descriptor) [pid 5087] close(18) = -1 EBADF (Bad file descriptor) [pid 5087] close(19) = -1 EBADF (Bad file descriptor) [pid 5087] close(20) = -1 EBADF (Bad file descriptor) [pid 5087] close(21) = -1 EBADF (Bad file descriptor) [pid 5087] close(22) = -1 EBADF (Bad file descriptor) [pid 5087] close(23) = -1 EBADF (Bad file descriptor) [pid 5087] close(24) = -1 EBADF (Bad file descriptor) [pid 5087] close(25) = -1 EBADF (Bad file descriptor) [ 83.277044][ T5086] R13: 00007ffdd91b07f4 R14: 00007ffdd91b0810 R15: 00007ffdd91b0820 [ 83.285102][ T5086] [pid 5087] close(26) = -1 EBADF (Bad file descriptor) [pid 5087] close(27) = -1 EBADF (Bad file descriptor) [pid 5087] close(28) = -1 EBADF (Bad file descriptor) [pid 5087] close(29) = -1 EBADF (Bad file descriptor) [pid 5087] exit_group(0) = ? [pid 5087] +++ exited with 0 +++ [pid 5083] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5083] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555cbc5d0) = 4 ./strace-static-x86_64: Process 5088 attached [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5088] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5088] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 5 [pid 5088] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=NULL, iov_len=320}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EFAULT (Bad address) [pid 5088] getsockname(5, {sa_family=AF_NETLINK, nl_pid=4, nl_groups=00000000}, [171 => 12]) = 0 [pid 5088] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x68\x74\x62\x00\x1c\x00\x02\x00\x18\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 [pid 5088] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5088] write(6, "19", 2) = 2 [ 83.374672][ T5088] FAULT_INJECTION: forcing a failure. [ 83.374672][ T5088] name failslab, interval 1, probability 0, space 0, times 0 [ 83.387708][ T5088] CPU: 0 PID: 5088 Comm: syz-executor301 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 83.397838][ T5088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 83.407944][ T5088] Call Trace: [ 83.411245][ T5088] [ 83.414198][ T5088] dump_stack_lvl+0x136/0x150 [ 83.418921][ T5088] should_fail_ex+0x4a3/0x5b0 [ 83.423649][ T5088] should_failslab+0x9/0x20 [ 83.428291][ T5088] __kmem_cache_alloc_node+0x5b/0x330 [ 83.433885][ T5088] ? tcf_exts_init_ex+0xe4/0x5a0 [ 83.438866][ T5088] kmalloc_trace+0x26/0x60 [ 83.443323][ T5088] tcf_exts_init_ex+0xe4/0x5a0 [ 83.448213][ T5088] fl_change+0x56f/0x4ab0 [ 83.452600][ T5088] ? fl_destroy+0x320/0x320 [ 83.457142][ T5088] ? __radix_tree_lookup+0x215/0x2a0 [ 83.462476][ T5088] ? fl_get+0x229/0x3c0 [ 83.466663][ T5088] ? fl_put+0x20/0x20 [ 83.470718][ T5088] tc_new_tfilter+0x97c/0x2290 [ 83.475553][ T5088] ? tc_del_tfilter+0x15d0/0x15d0 [ 83.480616][ T5088] ? mark_lock.part.0+0xee/0x1970 [ 83.486735][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.492752][ T5088] ? mark_lock.part.0+0xee/0x1970 [ 83.497819][ T5088] ? print_usage_bug.part.0+0x660/0x660 [ 83.503430][ T5088] ? rtnetlink_rcv_msg+0x956/0xd50 [ 83.508594][ T5088] ? lock_downgrade+0x690/0x690 [ 83.513497][ T5088] ? tc_del_tfilter+0x15d0/0x15d0 [ 83.518735][ T5088] rtnetlink_rcv_msg+0x996/0xd50 [ 83.523735][ T5088] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.528675][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.534694][ T5088] ? __sys_sendmsg+0xf7/0x1c0 [ 83.539401][ T5088] ? do_syscall_64+0x39/0xb0 [ 83.544053][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.550087][ T5088] netlink_rcv_skb+0x165/0x440 [ 83.554906][ T5088] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.559813][ T5088] ? netlink_ack+0x1360/0x1360 [ 83.564667][ T5088] ? netlink_deliver_tap+0x1b1/0xcf0 [ 83.570008][ T5088] netlink_unicast+0x547/0x7f0 [ 83.574848][ T5088] ? netlink_attachskb+0x890/0x890 [ 83.580002][ T5088] ? __virt_addr_valid+0x61/0x2e0 [ 83.585186][ T5088] ? __phys_addr_symbol+0x30/0x70 [ 83.590627][ T5088] ? __check_object_size+0x333/0x6e0 [ 83.595978][ T5088] netlink_sendmsg+0x925/0xe30 [ 83.600805][ T5088] ? netlink_unicast+0x7f0/0x7f0 [ 83.605813][ T5088] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 83.611142][ T5088] ? netlink_unicast+0x7f0/0x7f0 [ 83.616144][ T5088] sock_sendmsg+0xde/0x190 [ 83.620612][ T5088] ____sys_sendmsg+0x71c/0x900 [ 83.625524][ T5088] ? copy_msghdr_from_user+0xfc/0x150 [ 83.630969][ T5088] ? kernel_sendmsg+0x50/0x50 [ 83.635702][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.641738][ T5088] ___sys_sendmsg+0x110/0x1b0 [ 83.646450][ T5088] ? do_recvmmsg+0x6e0/0x6e0 [ 83.651107][ T5088] ? lock_release+0x780/0x780 [ 83.655836][ T5088] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 83.661086][ T5088] ? do_raw_spin_lock+0x124/0x2b0 [ 83.666156][ T5088] ? spin_bug+0x1c0/0x1c0 [ 83.670552][ T5088] ? __fget_light+0x20a/0x270 [ 83.675278][ T5088] __sys_sendmsg+0xf7/0x1c0 [ 83.679838][ T5088] ? __sys_sendmsg_sock+0x40/0x40 [ 83.684928][ T5088] ? lockdep_hardirqs_on+0x7d/0x100 [ 83.690172][ T5088] ? _raw_spin_unlock_irq+0x2e/0x50 [ 83.695449][ T5088] ? ptrace_notify+0xfe/0x140 [ 83.700188][ T5088] do_syscall_64+0x39/0xb0 [ 83.704674][ T5088] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 83.710625][ T5088] RIP: 0033:0x7f7806fa8d19 [ 83.715179][ T5088] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 83.734924][ T5088] RSP: 002b:00007ffdd91b07c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.743375][ T5088] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7806fa8d19 [ 83.751373][ T5088] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 83.759371][ T5088] RBP: 00007ffdd91b0800 R08: 0000000000000002 R09: 00007ffdd91b07f8 [ 83.767460][ T5088] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [pid 5088] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff\x00\x00\x0b\x00\x01\x00\x66\x6c\x6f\x77\x65\x72\x00\x00\x10\x00\x02\x00\x0a\x00\x04\x00\xaa\xaa\xaa\xaa\xaa\xaa\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [pid 5088] close(3) = 0 [pid 5088] close(4) = 0 [pid 5088] close(5) = 0 [pid 5088] close(6) = 0 [pid 5088] close(7) = -1 EBADF (Bad file descriptor) [pid 5088] close(8) = -1 EBADF (Bad file descriptor) [pid 5088] close(9) = -1 EBADF (Bad file descriptor) [pid 5088] close(10) = -1 EBADF (Bad file descriptor) [pid 5088] close(11) = -1 EBADF (Bad file descriptor) [pid 5088] close(12) = -1 EBADF (Bad file descriptor) [pid 5088] close(13) = -1 EBADF (Bad file descriptor) [pid 5088] close(14) = -1 EBADF (Bad file descriptor) [pid 5088] close(15) = -1 EBADF (Bad file descriptor) [pid 5088] close(16) = -1 EBADF (Bad file descriptor) [pid 5088] close(17) = -1 EBADF (Bad file descriptor) [pid 5088] close(18) = -1 EBADF (Bad file descriptor) [pid 5088] close(19) = -1 EBADF (Bad file descriptor) [pid 5088] close(20) = -1 EBADF (Bad file descriptor) [pid 5088] close(21) = -1 EBADF (Bad file descriptor) [pid 5088] close(22) = -1 EBADF (Bad file descriptor) [pid 5088] close(23) = -1 EBADF (Bad file descriptor) [pid 5088] close(24) = -1 EBADF (Bad file descriptor) [pid 5088] close(25) = -1 EBADF (Bad file descriptor) [pid 5088] close(26) = -1 EBADF (Bad file descriptor) [pid 5088] close(27) = -1 EBADF (Bad file descriptor) [pid 5088] close(28) = -1 EBADF (Bad file descriptor) [pid 5088] close(29) = -1 EBADF (Bad file descriptor) [pid 5088] exit_group(0) = ? [pid 5088] +++ exited with 0 +++ [pid 5083] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5083] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5083] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555cbc5d0) = 5 ./strace-static-x86_64: Process 5089 attached [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5089] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5089] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 5 [pid 5089] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=NULL, iov_len=320}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EFAULT (Bad address) [pid 5089] getsockname(5, {sa_family=AF_NETLINK, nl_pid=5, nl_groups=00000000}, [171 => 12]) = 0 [pid 5089] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x68\x74\x62\x00\x1c\x00\x02\x00\x18\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 [pid 5089] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5089] write(6, "19", 2) = 2 [ 83.775458][ T5088] R13: 00007ffdd91b07f4 R14: 00007ffdd91b0810 R15: 00007ffdd91b0820 [ 83.783495][ T5088] [ 83.817584][ T5089] FAULT_INJECTION: forcing a failure. [ 83.817584][ T5089] name failslab, interval 1, probability 0, space 0, times 0 [ 83.831017][ T5089] CPU: 1 PID: 5089 Comm: syz-executor301 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 83.841133][ T5089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 83.851293][ T5089] Call Trace: [ 83.854596][ T5089] [ 83.857540][ T5089] dump_stack_lvl+0x136/0x150 [ 83.862268][ T5089] should_fail_ex+0x4a3/0x5b0 [ 83.867015][ T5089] should_failslab+0x9/0x20 [ 83.871567][ T5089] __kmem_cache_alloc_node+0x5b/0x330 [ 83.877010][ T5089] ? tcf_exts_init_ex+0x246/0x5a0 [ 83.882220][ T5089] kmalloc_trace+0x26/0x60 [ 83.886750][ T5089] tcf_exts_init_ex+0x246/0x5a0 [ 83.891671][ T5089] fl_change+0x56f/0x4ab0 [ 83.896054][ T5089] ? fl_destroy+0x320/0x320 [ 83.900582][ T5089] ? __radix_tree_lookup+0x215/0x2a0 [ 83.905929][ T5089] ? fl_get+0x229/0x3c0 [ 83.910103][ T5089] ? fl_put+0x20/0x20 [ 83.914109][ T5089] tc_new_tfilter+0x97c/0x2290 [ 83.918931][ T5089] ? tc_del_tfilter+0x15d0/0x15d0 [ 83.923979][ T5089] ? mark_lock.part.0+0xee/0x1970 [ 83.929032][ T5089] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.935044][ T5089] ? mark_lock.part.0+0xee/0x1970 [ 83.940111][ T5089] ? print_usage_bug.part.0+0x660/0x660 [ 83.945722][ T5089] ? rtnetlink_rcv_msg+0x956/0xd50 [ 83.950887][ T5089] ? lock_downgrade+0x690/0x690 [ 83.955797][ T5089] ? tc_del_tfilter+0x15d0/0x15d0 [ 83.960860][ T5089] rtnetlink_rcv_msg+0x996/0xd50 [ 83.965853][ T5089] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.970752][ T5089] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.976775][ T5089] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 83.982811][ T5089] netlink_rcv_skb+0x165/0x440 [ 83.987624][ T5089] ? rtnl_stats_set+0x4d0/0x4d0 [ 83.992528][ T5089] ? netlink_ack+0x1360/0x1360 [ 83.997366][ T5089] ? netlink_deliver_tap+0x1b1/0xcf0 [ 84.002723][ T5089] netlink_unicast+0x547/0x7f0 [ 84.007548][ T5089] ? netlink_attachskb+0x890/0x890 [ 84.012791][ T5089] ? __virt_addr_valid+0x61/0x2e0 [ 84.017865][ T5089] ? __phys_addr_symbol+0x30/0x70 [ 84.022942][ T5089] ? __check_object_size+0x333/0x6e0 [ 84.028290][ T5089] netlink_sendmsg+0x925/0xe30 [ 84.033128][ T5089] ? netlink_unicast+0x7f0/0x7f0 [ 84.038123][ T5089] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 84.043458][ T5089] ? netlink_unicast+0x7f0/0x7f0 [ 84.048442][ T5089] sock_sendmsg+0xde/0x190 [ 84.052908][ T5089] ____sys_sendmsg+0x71c/0x900 [ 84.057722][ T5089] ? copy_msghdr_from_user+0xfc/0x150 [ 84.063128][ T5089] ? kernel_sendmsg+0x50/0x50 [ 84.067865][ T5089] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 84.073888][ T5089] ___sys_sendmsg+0x110/0x1b0 [ 84.078600][ T5089] ? do_recvmmsg+0x6e0/0x6e0 [ 84.083250][ T5089] ? lock_release+0x780/0x780 [ 84.087983][ T5089] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 84.093396][ T5089] ? do_raw_spin_lock+0x124/0x2b0 [ 84.098459][ T5089] ? spin_bug+0x1c0/0x1c0 [ 84.102834][ T5089] ? __fget_light+0x20a/0x270 [ 84.107549][ T5089] __sys_sendmsg+0xf7/0x1c0 [ 84.112082][ T5089] ? __sys_sendmsg_sock+0x40/0x40 [ 84.117160][ T5089] ? lockdep_hardirqs_on+0x7d/0x100 [ 84.122420][ T5089] ? _raw_spin_unlock_irq+0x2e/0x50 [ 84.127668][ T5089] ? ptrace_notify+0xfe/0x140 [ 84.132926][ T5089] do_syscall_64+0x39/0xb0 [ 84.137376][ T5089] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 84.143313][ T5089] RIP: 0033:0x7f7806fa8d19 [ 84.147757][ T5089] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 84.167755][ T5089] RSP: 002b:00007ffdd91b07c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.176204][ T5089] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7806fa8d19 [ 84.184460][ T5089] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 84.192630][ T5089] RBP: 00007ffdd91b0800 R08: 0000000000000002 R09: 00007ffdd91b07f8 [ 84.200625][ T5089] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [ 84.208640][ T5089] R13: 00007ffdd91b07f4 R14: 00007ffdd91b0810 R15: 00007ffdd91b0820 [pid 5089] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff\x00\x00\x0b\x00\x01\x00\x66\x6c\x6f\x77\x65\x72\x00\x00\x10\x00\x02\x00\x0a\x00\x04\x00\xaa\xaa\xaa\xaa\xaa\xaa\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [pid 5089] close(3) = 0 [pid 5089] close(4) = 0 [pid 5089] close(5) = 0 [pid 5089] close(6) = 0 [pid 5089] close(7) = -1 EBADF (Bad file descriptor) [pid 5089] close(8) = -1 EBADF (Bad file descriptor) [pid 5089] close(9) = -1 EBADF (Bad file descriptor) [pid 5089] close(10) = -1 EBADF (Bad file descriptor) [pid 5089] close(11) = -1 EBADF (Bad file descriptor) [pid 5089] close(12) = -1 EBADF (Bad file descriptor) [pid 5089] close(13) = -1 EBADF (Bad file descriptor) [pid 5089] close(14) = -1 EBADF (Bad file descriptor) [pid 5089] close(15) = -1 EBADF (Bad file descriptor) [pid 5089] close(16) = -1 EBADF (Bad file descriptor) [pid 5089] close(17) = -1 EBADF (Bad file descriptor) [pid 5089] close(18) = -1 EBADF (Bad file descriptor) [pid 5089] close(19) = -1 EBADF (Bad file descriptor) [pid 5089] close(20) = -1 EBADF (Bad file descriptor) [pid 5089] close(21) = -1 EBADF (Bad file descriptor) [pid 5089] close(22) = -1 EBADF (Bad file descriptor) [pid 5089] close(23) = -1 EBADF (Bad file descriptor) [pid 5089] close(24) = -1 EBADF (Bad file descriptor) [pid 5089] close(25) = -1 EBADF (Bad file descriptor) [pid 5089] close(26) = -1 EBADF (Bad file descriptor) [pid 5089] close(27) = -1 EBADF (Bad file descriptor) [pid 5089] close(28) = -1 EBADF (Bad file descriptor) [pid 5089] close(29) = -1 EBADF (Bad file descriptor) [pid 5089] exit_group(0) = ? [pid 5089] +++ exited with 0 +++ [pid 5083] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5083] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5083] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555cbc5d0) = 6 ./strace-static-x86_64: Process 5090 attached [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [pid 5090] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5090] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 5 [ 84.216669][ T5089] [pid 5090] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=NULL, iov_len=320}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EFAULT (Bad address) [pid 5090] getsockname(5, {sa_family=AF_NETLINK, nl_pid=6, nl_groups=00000000}, [171 => 12]) = 0 [pid 5090] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x68\x74\x62\x00\x1c\x00\x02\x00\x18\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 [pid 5090] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 6 [pid 5090] write(6, "19", 2) = 2 [ 84.250352][ T11] ================================================================== [ 84.258480][ T11] BUG: KASAN: slab-use-after-free in tcf_action_destroy+0x17f/0x1b0 [ 84.266498][ T11] Read of size 8 at addr ffff888029baa200 by task kworker/u4:1/11 [ 84.269652][ T5090] FAULT_INJECTION: forcing a failure. [ 84.269652][ T5090] name failslab, interval 1, probability 0, space 0, times 0 [ 84.274578][ T11] [ 84.274587][ T11] CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 84.274620][ T11] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 84.274646][ T11] Workqueue: tc_filter_workqueue fl_destroy_filter_work [ 84.316341][ T11] Call Trace: [ 84.319638][ T11] [ 84.322585][ T11] dump_stack_lvl+0xd9/0x150 [ 84.327219][ T11] print_address_description.constprop.0+0x2c/0x3c0 [ 84.333858][ T11] ? tcf_action_destroy+0x17f/0x1b0 [ 84.339099][ T11] kasan_report+0x11c/0x130 [ 84.343644][ T11] ? tcf_action_destroy+0x17f/0x1b0 [ 84.348881][ T11] tcf_action_destroy+0x17f/0x1b0 [ 84.353953][ T11] tcf_exts_destroy+0xc5/0x160 [ 84.358750][ T11] __fl_destroy_filter+0x1a/0x100 [ 84.363840][ T11] process_one_work+0x9bf/0x1820 [ 84.368842][ T11] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 84.374359][ T11] ? spin_bug+0x1c0/0x1c0 [ 84.378733][ T11] worker_thread+0x669/0x1090 [ 84.383452][ T11] ? process_one_work+0x1820/0x1820 [ 84.388718][ T11] kthread+0x2e8/0x3a0 [ 84.392846][ T11] ? kthread_complete_and_exit+0x40/0x40 [ 84.398520][ T11] ret_from_fork+0x1f/0x30 [ 84.402993][ T11] [ 84.406044][ T11] [ 84.406046][ T5090] CPU: 1 PID: 5090 Comm: syz-executor301 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 84.408365][ T11] Allocated by task 5089: [ 84.408380][ T11] kasan_save_stack+0x22/0x40 [ 84.418424][ T5090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 84.422737][ T11] kasan_set_track+0x25/0x30 [ 84.427417][ T5090] Call Trace: [ 84.427434][ T5090] [ 84.437473][ T11] __kasan_kmalloc+0xa2/0xb0 [ 84.442067][ T5090] dump_stack_lvl+0x136/0x150 [ 84.445336][ T11] tcf_exts_init_ex+0xe4/0x5a0 [ 84.448294][ T5090] should_fail_ex+0x4a3/0x5b0 [ 84.452865][ T11] fl_change+0x56f/0x4ab0 [ 84.457562][ T5090] should_failslab+0x9/0x20 [ 84.462315][ T11] tc_new_tfilter+0x97c/0x2290 [ 84.466985][ T5090] __kmem_cache_alloc_node+0x5b/0x330 [ 84.471301][ T11] rtnetlink_rcv_msg+0x996/0xd50 [ 84.475819][ T5090] ? fl_change+0x28dd/0x4ab0 [ 84.480581][ T11] netlink_rcv_skb+0x165/0x440 [ 84.485959][ T5090] kmalloc_trace+0x26/0x60 [ 84.490874][ T11] netlink_unicast+0x547/0x7f0 [ 84.495553][ T5090] fl_change+0x28dd/0x4ab0 [ 84.500308][ T11] netlink_sendmsg+0x925/0xe30 [ 84.504838][ T5090] ? fl_destroy+0x320/0x320 [ 84.509567][ T11] sock_sendmsg+0xde/0x190 [ 84.514208][ T5090] ? fl_get+0x229/0x3c0 [ 84.518943][ T11] ____sys_sendmsg+0x71c/0x900 [ 84.523460][ T5090] ? fl_put+0x20/0x20 [ 84.527854][ T11] ___sys_sendmsg+0x110/0x1b0 [ 84.532017][ T5090] tc_new_tfilter+0x97c/0x2290 [ 84.536750][ T11] __sys_sendmsg+0xf7/0x1c0 [ 84.540770][ T5090] ? tc_del_tfilter+0x15d0/0x15d0 [ 84.545414][ T11] do_syscall_64+0x39/0xb0 [ 84.550182][ T5090] ? mark_lock.part.0+0xee/0x1970 [ 84.554681][ T11] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 84.559704][ T5090] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 84.564104][ T11] [ 84.564111][ T11] Freed by task 5089: [ 84.569151][ T5090] ? mark_lock.part.0+0xee/0x1970 [ 84.575040][ T11] kasan_save_stack+0x22/0x40 [ 84.581030][ T5090] ? print_usage_bug.part.0+0x660/0x660 [ 84.583357][ T11] kasan_set_track+0x25/0x30 [ 84.587538][ T5090] ? rtnetlink_rcv_msg+0x956/0xd50 [ 84.592622][ T11] kasan_save_free_info+0x2e/0x40 [ 84.597383][ T5090] ? lock_downgrade+0x690/0x690 [ 84.602913][ T11] ____kasan_slab_free+0x160/0x1c0 [ 84.607517][ T5090] ? tc_del_tfilter+0x15d0/0x15d0 [ 84.612612][ T11] slab_free_freelist_hook+0x8b/0x1c0 [ 84.617634][ T5090] rtnetlink_rcv_msg+0x996/0xd50 [ 84.622637][ T11] __kmem_cache_free+0xaf/0x2d0 [ 84.627765][ T5090] ? rtnl_stats_set+0x4d0/0x4d0 [ 84.632762][ T11] tcf_exts_destroy+0xe5/0x160 [ 84.638136][ T5090] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 84.643148][ T11] tcf_exts_init_ex+0x484/0x5a0 [ 84.647991][ T5090] ? __sys_sendmsg+0xf7/0x1c0 [ 84.652847][ T11] fl_change+0x56f/0x4ab0 [ 84.657689][ T5090] ? do_syscall_64+0x39/0xb0 [ 84.663742][ T11] tc_new_tfilter+0x97c/0x2290 [ 84.668587][ T5090] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 84.673332][ T11] rtnetlink_rcv_msg+0x996/0xd50 [ 84.677687][ T5090] netlink_rcv_skb+0x165/0x440 [ 84.682274][ T11] netlink_rcv_skb+0x165/0x440 [ 84.687133][ T5090] ? rtnl_stats_set+0x4d0/0x4d0 [ 84.693091][ T11] netlink_unicast+0x547/0x7f0 [ 84.698028][ T5090] ? netlink_ack+0x1360/0x1360 [ 84.702789][ T11] netlink_sendmsg+0x925/0xe30 [ 84.707577][ T5090] ? netlink_deliver_tap+0x1b1/0xcf0 [ 84.712394][ T11] sock_sendmsg+0xde/0x190 [ 84.717180][ T5090] netlink_unicast+0x547/0x7f0 [ 84.721916][ T11] ____sys_sendmsg+0x71c/0x900 [ 84.726690][ T5090] ? netlink_attachskb+0x890/0x890 [ 84.731947][ T11] ___sys_sendmsg+0x110/0x1b0 [ 84.736356][ T5090] ? __virt_addr_valid+0x61/0x2e0 [ 84.741115][ T11] __sys_sendmsg+0xf7/0x1c0 [ 84.745875][ T5090] ? __phys_addr_symbol+0x30/0x70 [ 84.750970][ T11] do_syscall_64+0x39/0xb0 [ 84.755644][ T5090] ? __check_object_size+0x333/0x6e0 [ 84.760663][ T11] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 84.765171][ T5090] netlink_sendmsg+0x925/0xe30 [ 84.770172][ T11] [ 84.770179][ T11] The buggy address belongs to the object at ffff888029baa200 [ 84.770179][ T11] which belongs to the cache kmalloc-256 of size 256 [ 84.774591][ T5090] ? netlink_unicast+0x7f0/0x7f0 [ 84.779861][ T11] The buggy address is located 0 bytes inside of [ 84.779861][ T11] freed 256-byte region [ffff888029baa200, ffff888029baa300) [ 84.785802][ T5090] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 84.790651][ T11] [ 84.790658][ T11] The buggy address belongs to the physical page: [ 84.792999][ T5090] ? netlink_unicast+0x7f0/0x7f0 [ 84.807068][ T11] page:ffffea0000a6ea80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29baa [ 84.812105][ T5090] sock_sendmsg+0xde/0x190 [ 84.825713][ T11] head:ffffea0000a6ea80 order:1 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 84.831019][ T5090] ____sys_sendmsg+0x71c/0x900 [ 84.833331][ T11] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 84.839740][ T5090] ? copy_msghdr_from_user+0xfc/0x150 [ 84.844677][ T11] raw: 00fff00000010200 ffff888012441b40 dead000000000100 dead000000000122 [ 84.854801][ T5090] ? kernel_sendmsg+0x50/0x50 [ 84.859219][ T11] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 84.868158][ T5090] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 84.872897][ T11] page dumped because: kasan: bad access detected [ 84.872912][ T11] page_owner tracks the page as allocated [ 84.880879][ T5090] ___sys_sendmsg+0x110/0x1b0 [ 84.886229][ T11] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 24492540746, free_ts 0 [ 84.894829][ T5090] ? do_recvmmsg+0x6e0/0x6e0 [ 84.899554][ T11] get_page_from_freelist+0x1190/0x2f80 [ 84.908344][ T5090] ? lock_release+0x780/0x780 [ 84.914292][ T11] __alloc_pages+0x1cb/0x5c0 [ 84.920737][ T5090] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 84.926441][ T11] alloc_page_interleave+0x1e/0x200 [ 84.931157][ T5090] ? do_raw_spin_lock+0x124/0x2b0 [ 84.950883][ T11] alloc_pages+0x233/0x270 [ 84.955494][ T5090] ? spin_bug+0x1c0/0x1c0 [ 84.961021][ T11] allocate_slab+0x25f/0x390 [ 84.965707][ T5090] ? __fget_light+0x20a/0x270 [ 84.970266][ T11] ___slab_alloc+0xa91/0x1400 [ 84.975479][ T5090] __sys_sendmsg+0xf7/0x1c0 [ 84.980654][ T11] __slab_alloc.constprop.0+0x56/0xa0 [ 84.985684][ T5090] ? __sys_sendmsg_sock+0x40/0x40 [ 84.990098][ T11] __kmem_cache_alloc_node+0x136/0x330 [ 84.994446][ T5090] ? lockdep_hardirqs_on+0x7d/0x100 [ 84.999000][ T11] __kmalloc_node_track_caller+0x4b/0xc0 [ 85.003672][ T5090] ? _raw_spin_unlock_irq+0x2e/0x50 [ 85.008335][ T11] krealloc+0x5e/0x100 [ 85.012831][ T5090] ? ptrace_notify+0xfe/0x140 [ 85.018189][ T11] add_sysfs_param+0xca/0x960 [ 85.023224][ T5090] do_syscall_64+0x39/0xb0 [ 85.028661][ T11] param_sysfs_builtin_init+0x1c0/0x460 [ 85.033860][ T5090] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 85.039564][ T11] do_one_initcall+0x141/0x7d0 [ 85.044790][ T5090] RIP: 0033:0x7f7806fa8d19 [ 85.048848][ T11] kernel_init_freeable+0x701/0xe50 [ 85.053519][ T5090] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 85.058355][ T11] kernel_init+0x1e/0x2c0 [ 85.062765][ T5090] RSP: 002b:00007ffdd91b07c8 EFLAGS: 00000246 [ 85.068299][ T11] ret_from_fork+0x1f/0x30 [ 85.074274][ T5090] ORIG_RAX: 000000000000002e [ 85.079026][ T11] page_owner free stack trace missing [ 85.079036][ T11] [ 85.083448][ T5090] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7806fa8d19 [ 85.088634][ T11] Memory state around the buggy address: [ 85.088650][ T11] ffff888029baa100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 85.108321][ T5090] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 85.112656][ T11] ffff888029baa180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 85.118710][ T5090] RBP: 00007ffdd91b0800 R08: 0000000000000002 R09: 00007ffdd91b07f8 [ 85.123120][ T11] >ffff888029baa200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.127778][ T5090] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [ 85.133158][ T11] ^ [ 85.133174][ T11] ffff888029baa280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.135483][ T5090] R13: 00007ffdd91b07f4 R14: 00007ffdd91b0810 R15: 00007ffdd91b0820 [ 85.143538][ T11] ffff888029baa300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 85.149193][ T5090] [ 85.157220][ T11] ================================================================== [ 85.241719][ T11] Kernel panic - not syncing: KASAN: panic_on_warn set ... [pid 5090] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x40\x00\x00\x00\x2c\x00\x27\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff\x00\x00\x0b\x00\x01\x00\x66\x6c\x6f\x77\x65\x72\x00\x00\x10\x00\x02\x00\x0a\x00\x04\x00\xaa\xaa\xaa\xaa\xaa\xaa\x00\x00", iov_len=64}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64 [pid 5090] close(3) = 0 [pid 5090] close(4) = 0 [pid 5090] close(5) = 0 [pid 5090] close(6) = 0 [pid 5090] close(7) = -1 EBADF (Bad file descriptor) [pid 5090] close(8) = -1 EBADF (Bad file descriptor) [pid 5090] close(9) = -1 EBADF (Bad file descriptor) [pid 5090] close(10) = -1 EBADF (Bad file descriptor) [pid 5090] close(11) = -1 EBADF (Bad file descriptor) [pid 5090] close(12) = -1 EBADF (Bad file descriptor) [pid 5090] close(13) = -1 EBADF (Bad file descriptor) [pid 5090] close(14) = -1 EBADF (Bad file descriptor) [pid 5090] close(15) = -1 EBADF (Bad file descriptor) [pid 5090] close(16) = -1 EBADF (Bad file descriptor) [pid 5090] close(17) = -1 EBADF (Bad file descriptor) [pid 5090] close(18) = -1 EBADF (Bad file descriptor) [pid 5090] close(19) = -1 EBADF (Bad file descriptor) [pid 5090] close(20) = -1 EBADF (Bad file descriptor) [pid 5090] close(21) = -1 EBADF (Bad file descriptor) [pid 5090] close(22) = -1 EBADF (Bad file descriptor) [pid 5090] close(23) = -1 EBADF (Bad file descriptor) [pid 5090] close(24) = -1 EBADF (Bad file descriptor) [pid 5090] close(25) = -1 EBADF (Bad file descriptor) [pid 5090] close(26) = -1 EBADF (Bad file descriptor) [pid 5090] close(27) = -1 EBADF (Bad file descriptor) [pid 5090] close(28) = -1 EBADF (Bad file descriptor) [pid 5090] close(29) = -1 EBADF (Bad file descriptor) [pid 5090] exit_group(0) = ? [pid 5090] +++ exited with 0 +++ [pid 5083] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [ 85.248971][ T11] CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.2.0-syzkaller-12017-g1ec35eadc3b4 #0 [ 85.258643][ T11] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 85.268746][ T11] Workqueue: tc_filter_workqueue fl_destroy_filter_work [ 85.275776][ T11] Call Trace: [ 85.279137][ T11] [ 85.282106][ T11] dump_stack_lvl+0xd9/0x150 [ 85.286765][ T11] panic+0x61b/0x6c0 [ 85.290825][ T11] ? panic_smp_self_stop+0x90/0x90 [ 85.296010][ T11] ? preempt_schedule_thunk+0x1a/0x20 [ 85.301461][ T11] ? preempt_schedule_common+0x45/0xb0 [ 85.306986][ T11] check_panic_on_warn+0xb1/0xc0 [ 85.311967][ T11] end_report+0xf6/0x180 [ 85.316244][ T11] ? tcf_action_destroy+0x17f/0x1b0 [ 85.321477][ T11] kasan_report+0xf9/0x130 [ 85.325916][ T11] ? tcf_action_destroy+0x17f/0x1b0 [ 85.331149][ T11] tcf_action_destroy+0x17f/0x1b0 [ 85.336207][ T11] tcf_exts_destroy+0xc5/0x160 [ 85.341015][ T11] __fl_destroy_filter+0x1a/0x100 [ 85.346165][ T11] process_one_work+0x9bf/0x1820 [ 85.351311][ T11] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 85.356716][ T11] ? spin_bug+0x1c0/0x1c0 [ 85.361075][ T11] worker_thread+0x669/0x1090 [ 85.366051][ T11] ? process_one_work+0x1820/0x1820 [ 85.371460][ T11] kthread+0x2e8/0x3a0 [ 85.375552][ T11] ? kthread_complete_and_exit+0x40/0x40 [ 85.381482][ T11] ret_from_fork+0x1f/0x30 [ 85.386027][ T11] [ 85.389230][ T11] Kernel Offset: disabled [ 85.393570][ T11] Rebooting in 86400 seconds..