./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3142479382 <...> DUID 00:04:f2:2d:62:da:c3:85:a0:c9:3a:ab:4f:1c:2c:dc:65:98 forked to background, child pid 4654 [ 53.420136][ T4655] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.430890][ T4655] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.25' (ECDSA) to the list of known hosts. execve("./syz-executor3142479382", ["./syz-executor3142479382"], 0x7ffcb7801c50 /* 10 vars */) = 0 brk(NULL) = 0x55555731b000 brk(0x55555731bc40) = 0x55555731bc40 arch_prctl(ARCH_SET_FS, 0x55555731b300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3142479382", 4096) = 28 brk(0x55555733cc40) = 0x55555733cc40 brk(0x55555733d000) = 0x55555733d000 mprotect(0x7f6b6955c000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5088 attached , child_tidptr=0x55555731b5d0) = 5088 [pid 5088] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setsid() = 1 [pid 5088] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5088] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5088] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5088] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5088] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5088] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5088] unshare(CLONE_NEWNS) = 0 [pid 5088] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5088] unshare(CLONE_NEWIPC) = 0 [pid 5088] unshare(CLONE_NEWCGROUP) = 0 [pid 5088] unshare(CLONE_NEWUTS) = 0 [pid 5088] unshare(CLONE_SYSVSEM) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "16777216", 8) = 8 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "536870912", 9) = 9 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1024", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "8192", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1024", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1024", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5088] close(3) = 0 [pid 5088] getpid() = 1 [pid 5088] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 5b 5d 41 5c 41 5d 41 5e e9 58 44 73 f9 e8 53 44 73 f9 48 89 [ 86.346692][ T5088] RSP: 0018:ffffc90003d4f6f0 EFLAGS: 00010286 [ 86.352857][ T5088] RAX: 0000000000000000 RBX: ffff888022818000 RCX: 0000000000000000 [ 86.360947][ T5088] RDX: ffff88802920ba80 RSI: ffffffff814c2c17 RDI: 0000000000000001 [ 86.368979][ T5088] RBP: ffff888023d06000 R08: 0000000000000001 R09: 0000000000000000 [ 86.376982][ T5088] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888023d060f0 [ 86.385023][ T5088] R13: ffff888022818370 R14: ffff888023d06000 R15: 000000000000000e [ 86.393091][ T5088] FS: 000055555731b300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 86.402097][ T5088] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.408797][ T5088] CR2: 0000000020001000 CR3: 0000000078622000 CR4: 00000000003506f0 [ 86.416800][ T5088] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.424866][ T5088] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.433020][ T5088] Call Trace: [ 86.436340][ T5088] [ 86.439383][ T5088] __skb_gso_segment+0x3eb/0x6e0 [ 86.444389][ T5088] validate_xmit_skb+0x655/0xeb0 [ 86.449461][ T5088] validate_xmit_skb_list+0xc0/0x130 [ 86.454825][ T5088] sch_direct_xmit+0x3d5/0xc30 [ 86.459715][ T5088] ? lock_release+0x780/0x780 [ 86.464445][ T5088] ? lock_release+0x780/0x780 [ 86.469233][ T5088] ? dev_watchdog+0x9a0/0x9a0 [ 86.473970][ T5088] ? do_raw_spin_trylock+0xb4/0x180 [ 86.479321][ T5088] ? do_raw_spin_lock+0x220/0x2b0 [ 86.484423][ T5088] __dev_queue_xmit+0x1670/0x3db0 [ 86.489584][ T5088] ? netdev_core_pick_tx+0x350/0x350 [ 86.494959][ T5088] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 86.501686][ T5088] ? packet_rcv_spkt+0x620/0x620 [ 86.506708][ T5088] packet_sendmsg+0x33aa/0x55d0 [ 86.511704][ T5088] ? aa_sk_perm+0x31d/0xb10 [ 86.516268][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 86.522367][ T5088] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.528333][ T5088] ? aa_af_perm+0x240/0x240 [ 86.532982][ T5088] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.538332][ T5088] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.544359][ T5088] sock_sendmsg+0xde/0x190 [ 86.548892][ T5088] __sys_sendto+0x23a/0x340 [ 86.553480][ T5088] ? __ia32_sys_getpeername+0xb0/0xb0 [ 86.558973][ T5088] ? do_raw_spin_lock+0x124/0x2b0 [ 86.564110][ T5088] ? ptrace_notify+0xfe/0x140 [ 86.568912][ T5088] ? _raw_spin_unlock_irq+0x23/0x50 [ 86.574185][ T5088] ? lockdep_hardirqs_on+0x7d/0x100 [ 86.579499][ T5088] __x64_sys_sendto+0xe1/0x1b0 [ 86.584335][ T5088] ? syscall_trace_enter.constprop.0+0xb0/0x250 [ 86.590708][ T5088] do_syscall_64+0x39/0xb0 [ 86.595205][ T5088] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 86.601208][ T5088] RIP: 0033:0x7f6b694e8529 [ 86.605686][ T5088] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 86.625400][ T5088] RSP: 002b:00007ffebfa7d2e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 86.633930][ T5088] RAX: ffffffffffffffda RBX: 00007ffebfa7d308 RCX: 00007f6b694e8529 [ 86.642026][ T5088] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 86.650077][ T5088] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 86.658088][ T5088] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffebfa7d310 [ 86.666157][ T5088] R13: 00007ffebfa7d330 R14: 0000000000000000 R15: 0000000000000000 [ 86.674244][ T5088] [ 86.677300][ T5088] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 86.684605][ T5088] CPU: 0 PID: 5088 Comm: syz-executor314 Not tainted 6.2.0-syzkaller-05251-g5b7c4cabbb65 #0 [ 86.694706][ T5088] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 86.704779][ T5088] Call Trace: [ 86.708075][ T5088] [ 86.711026][ T5088] dump_stack_lvl+0xd9/0x150 [ 86.715650][ T5088] panic+0x61b/0x6c0 [ 86.719579][ T5088] ? panic_smp_self_stop+0x90/0x90 [ 86.724720][ T5088] ? show_trace_log_lvl+0x285/0x390 [ 86.729978][ T5088] ? skb_warn_bad_offload+0x119/0x230 [ 86.735381][ T5088] check_panic_on_warn+0xb1/0xc0 [ 86.740358][ T5088] __warn+0xf2/0x4f0 [ 86.744289][ T5088] ? skb_warn_bad_offload+0x119/0x230 [ 86.749694][ T5088] report_bug+0x2da/0x500 [ 86.754065][ T5088] handle_bug+0x3c/0x70 [ 86.758260][ T5088] exc_invalid_op+0x18/0x50 [ 86.762804][ T5088] asm_exc_invalid_op+0x1a/0x20 [ 86.767699][ T5088] RIP: 0010:skb_warn_bad_offload+0x119/0x230 [ 86.773725][ T5088] Code: 70 03 00 00 e8 88 44 73 f9 4c 8d a5 f0 00 00 00 e8 7c 44 73 f9 4c 89 e9 4c 89 e2 4c 89 f6 48 c7 c7 c0 1f 5c 8b e8 c7 c0 3a f9 <0f> 0b 5b 5d 41 5c 41 5d 41 5e e9 58 44 73 f9 e8 53 44 73 f9 48 89 [ 86.793357][ T5088] RSP: 0018:ffffc90003d4f6f0 EFLAGS: 00010286 [ 86.799449][ T5088] RAX: 0000000000000000 RBX: ffff888022818000 RCX: 0000000000000000 [ 86.807444][ T5088] RDX: ffff88802920ba80 RSI: ffffffff814c2c17 RDI: 0000000000000001 [ 86.815433][ T5088] RBP: ffff888023d06000 R08: 0000000000000001 R09: 0000000000000000 [ 86.823421][ T5088] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888023d060f0 [ 86.831417][ T5088] R13: ffff888022818370 R14: ffff888023d06000 R15: 000000000000000e [ 86.839432][ T5088] ? __warn_printk+0x187/0x310 [ 86.844243][ T5088] __skb_gso_segment+0x3eb/0x6e0 [ 86.849218][ T5088] validate_xmit_skb+0x655/0xeb0 [ 86.854204][ T5088] validate_xmit_skb_list+0xc0/0x130 [ 86.859535][ T5088] sch_direct_xmit+0x3d5/0xc30 [ 86.864340][ T5088] ? lock_release+0x780/0x780 [ 86.869051][ T5088] ? lock_release+0x780/0x780 [ 86.873757][ T5088] ? dev_watchdog+0x9a0/0x9a0 [ 86.878462][ T5088] ? do_raw_spin_trylock+0xb4/0x180 [ 86.883684][ T5088] ? do_raw_spin_lock+0x220/0x2b0 [ 86.888761][ T5088] __dev_queue_xmit+0x1670/0x3db0 [ 86.893838][ T5088] ? netdev_core_pick_tx+0x350/0x350 [ 86.899188][ T5088] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 86.905838][ T5088] ? packet_rcv_spkt+0x620/0x620 [ 86.910827][ T5088] packet_sendmsg+0x33aa/0x55d0 [ 86.915751][ T5088] ? aa_sk_perm+0x31d/0xb10 [ 86.920336][ T5088] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 86.926358][ T5088] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.932292][ T5088] ? aa_af_perm+0x240/0x240 [ 86.936857][ T5088] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.942182][ T5088] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 86.948121][ T5088] sock_sendmsg+0xde/0x190 [ 86.952577][ T5088] __sys_sendto+0x23a/0x340 [ 86.957122][ T5088] ? __ia32_sys_getpeername+0xb0/0xb0 [ 86.962540][ T5088] ? do_raw_spin_lock+0x124/0x2b0 [ 86.967619][ T5088] ? ptrace_notify+0xfe/0x140 [ 86.972352][ T5088] ? _raw_spin_unlock_irq+0x23/0x50 [ 86.977597][ T5088] ? lockdep_hardirqs_on+0x7d/0x100 [ 86.982827][ T5088] __x64_sys_sendto+0xe1/0x1b0 [ 86.987630][ T5088] ? syscall_trace_enter.constprop.0+0xb0/0x250 [ 86.993907][ T5088] do_syscall_64+0x39/0xb0 [ 86.998360][ T5088] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 87.004281][ T5088] RIP: 0033:0x7f6b694e8529 [ 87.008723][ T5088] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 87.028369][ T5088] RSP: 002b:00007ffebfa7d2e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 87.036825][ T5088] RAX: ffffffffffffffda RBX: 00007ffebfa7d308 RCX: 00007f6b694e8529 [ 87.044823][ T5088] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 87.052821][ T5088] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 87.060816][ T5088] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffebfa7d310 [ 87.068813][ T5088] R13: 00007ffebfa7d330 R14: 0000000000000000 R15: 0000000000000000 [ 87.076826][ T5088] [ 87.080132][ T5088] Kernel Offset: disabled [ 87.084564][ T5088] Rebooting in 86400 seconds..