./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4136978424 <...> Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. execve("./syz-executor4136978424", ["./syz-executor4136978424"], 0x7fff14051770 /* 10 vars */) = 0 brk(NULL) = 0x555556901000 brk(0x555556901c40) = 0x555556901c40 arch_prctl(ARCH_SET_FS, 0x555556901300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4136978424", 4096) = 28 brk(0x555556922c40) = 0x555556922c40 brk(0x555556923000) = 0x555556923000 mprotect(0x7f7b2014c000, 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 5019 attached , child_tidptr=0x5555569015d0) = 5019 [pid 5019] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5019] setsid() = 1 [pid 5019] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5019] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5019] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5019] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5019] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5019] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5019] unshare(CLONE_NEWNS) = 0 [pid 5019] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5019] unshare(CLONE_NEWIPC) = 0 [pid 5019] unshare(CLONE_NEWCGROUP) = 0 [pid 5019] unshare(CLONE_NEWUTS) = 0 [pid 5019] unshare(CLONE_SYSVSEM) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "16777216", 8) = 8 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "536870912", 9) = 9 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "1024", 4) = 4 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "8192", 4) = 4 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "1024", 4) = 4 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "1024", 4) = 4 [pid 5019] close(3) = 0 [pid 5019] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5019] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5019] close(3) = 0 [pid 5019] getpid() = 1 [pid 5019] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 1d bb f0 78 06 31 ff 89 de e8 db 2d 69 f9 84 db 75 dd [ 47.713730][ T5019] RSP: 0018:ffffc90003aef120 EFLAGS: 00010293 [ 47.719950][ T5019] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 47.727947][ T5019] RDX: ffff888028595940 RSI: ffffffff881bad63 RDI: 0000000000000006 [ 47.735970][ T5019] RBP: ffff8880728c7500 R08: 0000000000000006 R09: 0000000000000621 [ 47.743978][ T5019] R10: 0000000000000519 R11: 0000000000000001 R12: ffff8880728c7574 [ 47.752014][ T5019] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 47.760051][ T5019] FS: 0000555556901300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 47.769101][ T5019] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.775694][ T5019] CR2: 0000000020001000 CR3: 000000002c41d000 CR4: 0000000000350ef0 [ 47.783715][ T5019] Call Trace: [ 47.787023][ T5019] [ 47.790009][ T5019] ? __warn+0xe6/0x390 [ 47.794091][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 47.799257][ T5019] ? report_bug+0x2da/0x500 [ 47.803798][ T5019] ? handle_bug+0x3c/0x70 [ 47.808109][ T5019] ? exc_invalid_op+0x18/0x50 [ 47.812821][ T5019] ? asm_exc_invalid_op+0x1a/0x20 [ 47.817880][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 47.823031][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 47.828155][ T5019] ip_do_fragment+0x9a4/0x17f0 [ 47.832977][ T5019] ? ip_fragment.constprop.0+0x240/0x240 [ 47.838628][ T5019] ? ip_frag_next+0xa50/0xa50 [ 47.843333][ T5019] ? slab_free_freelist_hook+0x8b/0x1c0 [ 47.848911][ T5019] ip_fragment.constprop.0+0x16b/0x240 [ 47.854433][ T5019] __ip_finish_output+0x4a0/0x650 [ 47.859512][ T5019] ip_finish_output+0x31/0x280 [ 47.864261][ T5019] ip_output+0x1a3/0x320 [ 47.868486][ T5019] ip_local_out+0xb3/0x1a0 [ 47.872925][ T5019] iptunnel_xmit+0x622/0xa40 [ 47.877553][ T5019] ip_tunnel_xmit+0xfc0/0x3170 [ 47.882367][ T5019] ? flow_indr_dev_setup_offload+0xa8/0x8c0 [ 47.888307][ T5019] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 47.893663][ T5019] ? __gre_xmit+0x4f4/0x980 [ 47.898188][ T5019] ipgre_xmit+0x6d3/0x8f0 [ 47.902570][ T5019] dev_hard_start_xmit+0x187/0x700 [ 47.907718][ T5019] __dev_queue_xmit+0x2be2/0x3b10 [ 47.912790][ T5019] ? netdev_core_pick_tx+0x390/0x390 [ 47.918086][ T5019] ? hash_and_copy_to_iter+0x170/0x210 [ 47.923602][ T5019] ? hash_and_copy_to_iter+0x210/0x210 [ 47.929105][ T5019] ? skb_partial_csum_set+0x203/0x390 [ 47.934499][ T5019] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 47.941142][ T5019] ? packet_rcv_spkt+0x620/0x620 [ 47.946097][ T5019] packet_xmit+0x260/0x390 [ 47.950539][ T5019] packet_sendmsg+0x34ad/0x5090 [ 47.955409][ T5019] ? aa_sk_perm+0x31d/0xb10 [ 47.959965][ T5019] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 47.965868][ T5019] ? aa_af_perm+0x240/0x240 [ 47.970422][ T5019] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 47.976339][ T5019] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 47.981650][ T5019] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 47.987557][ T5019] sock_sendmsg+0xde/0x190 [ 47.992027][ T5019] ____sys_sendmsg+0x739/0x920 [ 47.996828][ T5019] ? copy_msghdr_from_user+0xfc/0x150 [ 48.002233][ T5019] ? kernel_sendmsg+0x50/0x50 [ 48.006923][ T5019] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 48.012933][ T5019] ___sys_sendmsg+0x110/0x1b0 [ 48.017635][ T5019] ? do_recvmmsg+0x6f0/0x6f0 [ 48.022279][ T5019] ? lock_sync+0x190/0x190 [ 48.027002][ T5019] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 48.032660][ T5019] ? do_raw_spin_lock+0x124/0x2b0 [ 48.037710][ T5019] ? spin_bug+0x1c0/0x1c0 [ 48.042080][ T5019] ? _raw_spin_lock_irq+0x45/0x50 [ 48.047124][ T5019] ? __fget_light+0x201/0x270 [ 48.051840][ T5019] __sys_sendmsg+0xf7/0x1c0 [ 48.056349][ T5019] ? __sys_sendmsg_sock+0x40/0x40 [ 48.061436][ T5019] ? lock_downgrade+0x690/0x690 [ 48.066303][ T5019] ? lockdep_hardirqs_on+0x7d/0x100 [ 48.071531][ T5019] ? _raw_spin_unlock_irq+0x2e/0x50 [ 48.076749][ T5019] ? ptrace_notify+0xfe/0x140 [ 48.081455][ T5019] do_syscall_64+0x39/0xb0 [ 48.085894][ T5019] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.091823][ T5019] RIP: 0033:0x7f7b200d8559 [ 48.096244][ T5019] 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 [ 48.115916][ T5019] RSP: 002b:00007ffcda80f308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.124441][ T5019] RAX: ffffffffffffffda RBX: 00007ffcda80f318 RCX: 00007f7b200d8559 [ 48.132437][ T5019] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 48.140448][ T5019] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 48.148419][ T5019] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcda80f320 [ 48.156453][ T5019] R13: 00007ffcda80f340 R14: 0000000000000000 R15: 0000000000000000 [ 48.164471][ T5019] [ 48.167518][ T5019] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 48.174784][ T5019] CPU: 0 PID: 5019 Comm: syz-executor413 Not tainted 6.4.0-syzkaller-12316-g4f6b6c2b2f86 #0 [ 48.184835][ T5019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 [ 48.194876][ T5019] Call Trace: [ 48.198145][ T5019] [ 48.201070][ T5019] dump_stack_lvl+0xd9/0x150 [ 48.205707][ T5019] panic+0x686/0x730 [ 48.209678][ T5019] ? panic_smp_self_stop+0xa0/0xa0 [ 48.214808][ T5019] ? show_trace_log_lvl+0x284/0x390 [ 48.220057][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 48.225178][ T5019] check_panic_on_warn+0xb1/0xc0 [ 48.230123][ T5019] __warn+0xf2/0x390 [ 48.234017][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 48.239225][ T5019] report_bug+0x2da/0x500 [ 48.243573][ T5019] handle_bug+0x3c/0x70 [ 48.247725][ T5019] exc_invalid_op+0x18/0x50 [ 48.252221][ T5019] asm_exc_invalid_op+0x1a/0x20 [ 48.257069][ T5019] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 48.262797][ T5019] Code: 32 69 f9 0f 0b 0f b6 1d e3 f0 78 06 31 ff 89 de e8 02 2e 69 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 0d 32 69 f9 <0f> 0b 0f b6 1d bb f0 78 06 31 ff 89 de e8 db 2d 69 f9 84 db 75 dd [ 48.282510][ T5019] RSP: 0018:ffffc90003aef120 EFLAGS: 00010293 [ 48.288580][ T5019] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 48.296542][ T5019] RDX: ffff888028595940 RSI: ffffffff881bad63 RDI: 0000000000000006 [ 48.304509][ T5019] RBP: ffff8880728c7500 R08: 0000000000000006 R09: 0000000000000621 [ 48.312476][ T5019] R10: 0000000000000519 R11: 0000000000000001 R12: ffff8880728c7574 [ 48.320452][ T5019] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 48.328425][ T5019] ? skb_checksum_help+0x4a3/0x5c0 [ 48.333557][ T5019] ip_do_fragment+0x9a4/0x17f0 [ 48.338334][ T5019] ? ip_fragment.constprop.0+0x240/0x240 [ 48.343980][ T5019] ? ip_frag_next+0xa50/0xa50 [ 48.348666][ T5019] ? slab_free_freelist_hook+0x8b/0x1c0 [ 48.354225][ T5019] ip_fragment.constprop.0+0x16b/0x240 [ 48.359696][ T5019] __ip_finish_output+0x4a0/0x650 [ 48.364726][ T5019] ip_finish_output+0x31/0x280 [ 48.369501][ T5019] ip_output+0x1a3/0x320 [ 48.373756][ T5019] ip_local_out+0xb3/0x1a0 [ 48.378178][ T5019] iptunnel_xmit+0x622/0xa40 [ 48.382782][ T5019] ip_tunnel_xmit+0xfc0/0x3170 [ 48.387546][ T5019] ? flow_indr_dev_setup_offload+0xa8/0x8c0 [ 48.393460][ T5019] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 48.398802][ T5019] ? __gre_xmit+0x4f4/0x980 [ 48.403331][ T5019] ipgre_xmit+0x6d3/0x8f0 [ 48.407663][ T5019] dev_hard_start_xmit+0x187/0x700 [ 48.412786][ T5019] __dev_queue_xmit+0x2be2/0x3b10 [ 48.417817][ T5019] ? netdev_core_pick_tx+0x390/0x390 [ 48.423107][ T5019] ? hash_and_copy_to_iter+0x170/0x210 [ 48.428577][ T5019] ? hash_and_copy_to_iter+0x210/0x210 [ 48.434042][ T5019] ? skb_partial_csum_set+0x203/0x390 [ 48.439423][ T5019] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 48.446022][ T5019] ? packet_rcv_spkt+0x620/0x620 [ 48.450961][ T5019] packet_xmit+0x260/0x390 [ 48.455378][ T5019] packet_sendmsg+0x34ad/0x5090 [ 48.460325][ T5019] ? aa_sk_perm+0x31d/0xb10 [ 48.464830][ T5019] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 48.470719][ T5019] ? aa_af_perm+0x240/0x240 [ 48.475221][ T5019] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 48.481207][ T5019] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 48.486491][ T5019] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 48.492383][ T5019] sock_sendmsg+0xde/0x190 [ 48.496805][ T5019] ____sys_sendmsg+0x739/0x920 [ 48.501572][ T5019] ? copy_msghdr_from_user+0xfc/0x150 [ 48.506952][ T5019] ? kernel_sendmsg+0x50/0x50 [ 48.511637][ T5019] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 48.517622][ T5019] ___sys_sendmsg+0x110/0x1b0 [ 48.522295][ T5019] ? do_recvmmsg+0x6f0/0x6f0 [ 48.526882][ T5019] ? lock_sync+0x190/0x190 [ 48.531294][ T5019] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 48.536489][ T5019] ? do_raw_spin_lock+0x124/0x2b0 [ 48.541514][ T5019] ? spin_bug+0x1c0/0x1c0 [ 48.545834][ T5019] ? _raw_spin_lock_irq+0x45/0x50 [ 48.550895][ T5019] ? __fget_light+0x201/0x270 [ 48.555577][ T5019] __sys_sendmsg+0xf7/0x1c0 [ 48.560160][ T5019] ? __sys_sendmsg_sock+0x40/0x40 [ 48.565191][ T5019] ? lock_downgrade+0x690/0x690 [ 48.570134][ T5019] ? lockdep_hardirqs_on+0x7d/0x100 [ 48.575418][ T5019] ? _raw_spin_unlock_irq+0x2e/0x50 [ 48.580625][ T5019] ? ptrace_notify+0xfe/0x140 [ 48.585297][ T5019] do_syscall_64+0x39/0xb0 [ 48.589727][ T5019] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.595634][ T5019] RIP: 0033:0x7f7b200d8559 [ 48.600043][ T5019] 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 [ 48.619649][ T5019] RSP: 002b:00007ffcda80f308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.628053][ T5019] RAX: ffffffffffffffda RBX: 00007ffcda80f318 RCX: 00007f7b200d8559 [ 48.636014][ T5019] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 48.643970][ T5019] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 48.651930][ T5019] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcda80f320 [ 48.659977][ T5019] R13: 00007ffcda80f340 R14: 0000000000000000 R15: 0000000000000000 [ 48.667958][ T5019] [ 48.671936][ T5019] Kernel Offset: disabled [ 48.676308][ T5019] Rebooting in 86400 seconds..