./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1884422712 <...> DUID 00:04:c2:14:a9:3f:3d:94:29:63:70:45:79:7c:3d:d2:41:a3 forked to background, child pid 4671 [ 32.765334][ T4672] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.776855][ T4672] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. execve("./syz-executor1884422712", ["./syz-executor1884422712"], 0x7fff9345d650 /* 10 vars */) = 0 brk(NULL) = 0x555556078000 brk(0x555556078c40) = 0x555556078c40 arch_prctl(ARCH_SET_FS, 0x555556078300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1884422712", 4096) = 28 brk(0x555556099c40) = 0x555556099c40 brk(0x55555609a000) = 0x55555609a000 mprotect(0x7f2aa4421000, 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, child_tidptr=0x5555560785d0) = 5003 ./strace-static-x86_64: Process 5003 attached [pid 5003] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5003] setsid() = 1 [pid 5003] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5003] unshare(CLONE_NEWNS) = 0 [pid 5003] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5003] unshare(CLONE_NEWIPC) = 0 [pid 5003] unshare(CLONE_NEWCGROUP) = 0 [pid 5003] unshare(CLONE_NEWUTS) = 0 [pid 5003] unshare(CLONE_SYSVSEM) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "16777216", 8) = 8 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "536870912", 9) = 9 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "8192", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5003] close(3) = 0 [pid 5003] getpid() = 1 [pid 5003] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 1d 0f 00 57 06 31 ff 89 de e8 4b 51 76 f9 84 db 75 dd [ 59.476894][ T5003] RSP: 0018:ffffc900039ff120 EFLAGS: 00010293 [ 59.482979][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 59.490996][ T5003] RDX: ffff888020358000 RSI: ffffffff880df0c3 RDI: 0000000000000006 [ 59.499006][ T5003] RBP: ffff888071b71b40 R08: 0000000000000006 R09: 00000000000006aa [ 59.507011][ T5003] R10: 0000000000000688 R11: ffffffff8a0fae99 R12: ffff888071b71bb4 [ 59.514996][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 59.523034][ T5003] FS: 0000555556078300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 59.532269][ T5003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.538887][ T5003] CR2: 0000000020001000 CR3: 0000000029f18000 CR4: 00000000003506f0 [ 59.546896][ T5003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.554860][ T5003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.562866][ T5003] Call Trace: [ 59.566195][ T5003] [ 59.569132][ T5003] ? __warn+0xe6/0x390 [ 59.573197][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 59.578348][ T5003] ? report_bug+0x2da/0x500 [ 59.582885][ T5003] ? handle_bug+0x3c/0x70 [ 59.587337][ T5003] ? exc_invalid_op+0x18/0x50 [ 59.592027][ T5003] ? asm_exc_invalid_op+0x1a/0x20 [ 59.597100][ T5003] ? do_syscall_64+0x39/0xb0 [ 59.601808][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 59.607049][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 59.612276][ T5003] ip_do_fragment+0x99f/0x17d0 [ 59.617076][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 59.622722][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 59.628670][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 59.633972][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.639209][ T5003] ? ip_frag_next+0xa50/0xa50 [ 59.643898][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 59.649488][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 59.654095][ T5003] ? kmem_cache_free+0xe9/0x480 [ 59.659086][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 59.664563][ T5003] __ip_finish_output+0x4a0/0x650 [ 59.669727][ T5003] ip_finish_output+0x31/0x280 [ 59.674508][ T5003] ip_output+0x1a3/0x320 [ 59.678813][ T5003] ip_local_out+0xb3/0x1a0 [ 59.683245][ T5003] iptunnel_xmit+0x622/0xa40 [ 59.687887][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 59.692676][ T5003] ? skb_eth_gso_segment+0x128/0x290 [ 59.698017][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 59.703327][ T5003] ? __gre_xmit+0x4f4/0x980 [ 59.707875][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 59.712226][ T5003] dev_hard_start_xmit+0x187/0x700 [ 59.717383][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 59.722426][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 59.727752][ T5003] ? hash_and_copy_to_iter+0x120/0x210 [ 59.733235][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 59.738758][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 59.744157][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 59.750809][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 59.755797][ T5003] packet_xmit+0x260/0x390 [ 59.760300][ T5003] packet_sendmsg+0x347f/0x5030 [ 59.765210][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 59.769739][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.775725][ T5003] ? aa_af_perm+0x240/0x240 [ 59.780311][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 59.786291][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.791701][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.797924][ T5003] sock_sendmsg+0xde/0x190 [ 59.802366][ T5003] ____sys_sendmsg+0x733/0x920 [ 59.807262][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 59.812659][ T5003] ? kernel_sendmsg+0x50/0x50 [ 59.817389][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 59.823403][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 59.828130][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 59.832838][ T5003] ? lock_sync+0x190/0x190 [ 59.837334][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 59.842583][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 59.847687][ T5003] ? spin_bug+0x1c0/0x1c0 [ 59.852582][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 59.857721][ T5003] ? __fget_light+0x20a/0x270 [ 59.862472][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 59.867027][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 59.872088][ T5003] ? lock_downgrade+0x690/0x690 [ 59.877006][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.882227][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 59.887493][ T5003] ? ptrace_notify+0xfe/0x140 [ 59.892288][ T5003] do_syscall_64+0x39/0xb0 [ 59.896757][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.902682][ T5003] RIP: 0033:0x7f2aa43ad559 [ 59.907247][ T5003] 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 [ 59.926934][ T5003] RSP: 002b:00007ffc9bc29e98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.935391][ T5003] RAX: ffffffffffffffda RBX: 00007ffc9bc29ea8 RCX: 00007f2aa43ad559 [ 59.943382][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 59.951915][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 59.959939][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc9bc29eb0 [ 59.967971][ T5003] R13: 00007ffc9bc29ed0 R14: 0000000000000000 R15: 0000000000000000 [ 59.975991][ T5003] [ 59.979007][ T5003] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 59.986361][ T5003] CPU: 0 PID: 5003 Comm: syz-executor188 Not tainted 6.4.0-rc4-syzkaller-00880-gb62d9e200492 #0 [ 59.996761][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 60.006988][ T5003] Call Trace: [ 60.010256][ T5003] [ 60.013178][ T5003] dump_stack_lvl+0xd9/0x150 [ 60.017778][ T5003] panic+0x686/0x730 [ 60.021671][ T5003] ? panic_smp_self_stop+0xa0/0xa0 [ 60.026784][ T5003] ? show_trace_log_lvl+0x284/0x390 [ 60.031987][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.037098][ T5003] check_panic_on_warn+0xb1/0xc0 [ 60.042121][ T5003] __warn+0xf2/0x390 [ 60.046022][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.051247][ T5003] report_bug+0x2da/0x500 [ 60.055593][ T5003] handle_bug+0x3c/0x70 [ 60.060262][ T5003] exc_invalid_op+0x18/0x50 [ 60.064757][ T5003] asm_exc_invalid_op+0x1a/0x20 [ 60.069696][ T5003] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 60.075506][ T5003] Code: 55 76 f9 0f 0b 0f b6 1d 37 00 57 06 31 ff 89 de e8 72 51 76 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 7d 55 76 f9 <0f> 0b 0f b6 1d 0f 00 57 06 31 ff 89 de e8 4b 51 76 f9 84 db 75 dd [ 60.095538][ T5003] RSP: 0018:ffffc900039ff120 EFLAGS: 00010293 [ 60.101685][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 60.109758][ T5003] RDX: ffff888020358000 RSI: ffffffff880df0c3 RDI: 0000000000000006 [ 60.117985][ T5003] RBP: ffff888071b71b40 R08: 0000000000000006 R09: 00000000000006aa [ 60.126222][ T5003] R10: 0000000000000688 R11: ffffffff8a0fae99 R12: ffff888071b71bb4 [ 60.134201][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 60.142179][ T5003] ? do_syscall_64+0x39/0xb0 [ 60.146793][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.151919][ T5003] ip_do_fragment+0x99f/0x17d0 [ 60.156681][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 60.162310][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 60.168155][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 60.173474][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.178688][ T5003] ? ip_frag_next+0xa50/0xa50 [ 60.183369][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 60.188909][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 60.193491][ T5003] ? kmem_cache_free+0xe9/0x480 [ 60.198342][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 60.203791][ T5003] __ip_finish_output+0x4a0/0x650 [ 60.208809][ T5003] ip_finish_output+0x31/0x280 [ 60.213563][ T5003] ip_output+0x1a3/0x320 [ 60.217800][ T5003] ip_local_out+0xb3/0x1a0 [ 60.222207][ T5003] iptunnel_xmit+0x622/0xa40 [ 60.226793][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 60.231552][ T5003] ? skb_eth_gso_segment+0x128/0x290 [ 60.236833][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 60.242115][ T5003] ? __gre_xmit+0x4f4/0x980 [ 60.246726][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 60.251056][ T5003] dev_hard_start_xmit+0x187/0x700 [ 60.256266][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 60.261374][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 60.266738][ T5003] ? hash_and_copy_to_iter+0x120/0x210 [ 60.272283][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 60.277735][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 60.283189][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 60.289808][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 60.294773][ T5003] packet_xmit+0x260/0x390 [ 60.299395][ T5003] packet_sendmsg+0x347f/0x5030 [ 60.304357][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 60.308955][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.314852][ T5003] ? aa_af_perm+0x240/0x240 [ 60.319349][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 60.325248][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 60.330546][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.336563][ T5003] sock_sendmsg+0xde/0x190 [ 60.341334][ T5003] ____sys_sendmsg+0x733/0x920 [ 60.346105][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 60.351533][ T5003] ? kernel_sendmsg+0x50/0x50 [ 60.356207][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.362274][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 60.366946][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 60.371534][ T5003] ? lock_sync+0x190/0x190 [ 60.375952][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 60.381158][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 60.386287][ T5003] ? spin_bug+0x1c0/0x1c0 [ 60.390640][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 60.395662][ T5003] ? __fget_light+0x20a/0x270 [ 60.400343][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 60.404844][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 60.409969][ T5003] ? lock_downgrade+0x690/0x690 [ 60.414999][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.420194][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.425399][ T5003] ? ptrace_notify+0xfe/0x140 [ 60.430096][ T5003] do_syscall_64+0x39/0xb0 [ 60.434510][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.440400][ T5003] RIP: 0033:0x7f2aa43ad559 [ 60.444891][ T5003] 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 [ 60.464584][ T5003] RSP: 002b:00007ffc9bc29e98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.472993][ T5003] RAX: ffffffffffffffda RBX: 00007ffc9bc29ea8 RCX: 00007f2aa43ad559 [ 60.481146][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 60.489112][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 60.497455][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc9bc29eb0 [ 60.505426][ T5003] R13: 00007ffc9bc29ed0 R14: 0000000000000000 R15: 0000000000000000 [ 60.513501][ T5003] [ 60.516580][ T5003] Kernel Offset: disabled [ 60.520970][ T5003] Rebooting in 86400 seconds..