./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor549735006 <...> Warning: Permanently added '10.128.0.45' (ED25519) to the list of known hosts. execve("./syz-executor549735006", ["./syz-executor549735006"], 0x7ffec925eab0 /* 10 vars */) = 0 brk(NULL) = 0x555555c11000 brk(0x555555c11d00) = 0x555555c11d00 arch_prctl(ARCH_SET_FS, 0x555555c11380) = 0 set_tid_address(0x555555c11650) = 5052 set_robust_list(0x555555c11660, 24) = 0 rseq(0x555555c11ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor549735006", 4096) = 27 getrandom("\xbd\x8e\xa3\xb0\x7b\x67\x55\x06", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555c11d00 brk(0x555555c32d00) = 0x555555c32d00 brk(0x555555c33000) = 0x555555c33000 mprotect(0x7f22ce7b8000, 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 5053 attached , child_tidptr=0x555555c11650) = 5053 [pid 5053] set_robust_list(0x555555c11660, 24) = 0 [pid 5053] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5053] setsid() = 1 [pid 5053] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5053] unshare(CLONE_NEWNS) = 0 [pid 5053] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5053] unshare(CLONE_NEWIPC) = 0 [pid 5053] unshare(CLONE_NEWCGROUP) = 0 [pid 5053] unshare(CLONE_NEWUTS) = 0 [pid 5053] unshare(CLONE_SYSVSEM) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "16777216", 8) = 8 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "536870912", 9) = 9 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "8192", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5053] close(3) = 0 [pid 5053] getpid() = 1 [pid 5053] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (104) [ 57.639905][ T5053] WARNING: CPU: 1 PID: 5053 at net/core/dev.c:3293 skb_checksum_help+0x527/0x740 [ 57.649093][ T5053] Modules linked in: [ 57.653026][ T5053] CPU: 1 PID: 5053 Comm: syz-executor549 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 57.663131][ T5053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 57.673213][ T5053] RIP: 0010:skb_checksum_help+0x527/0x740 [ 57.678924][ T5053] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00 02 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 00 19 ea 8b e8 fa 62 d5 f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 3b 6c 0f f9 44 0f b6 25 04 09 ac 06 [ 57.698573][ T5053] RSP: 0018:ffffc90003c0f088 EFLAGS: 00010286 [ 57.704686][ T5053] RAX: 0000000000000000 RBX: ffff888023b20500 RCX: ffffffff814e08e9 [ 57.712697][ T5053] RDX: ffff88801b321dc0 RSI: ffffffff814e08f6 RDI: 0000000000000001 [ 57.720708][ T5053] RBP: ffff888023b20574 R08: 0000000000000001 R09: 0000000000000000 [ 57.728718][ T5053] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 57.736739][ T5053] R13: 0000000000000529 R14: ffff888023b20570 R15: 00000000000005d1 [ 57.744776][ T5053] FS: 0000555555c11380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 57.753723][ T5053] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.760373][ T5053] CR2: 000000002000d000 CR3: 000000007f169000 CR4: 0000000000350ef0 [ 57.768363][ T5053] Call Trace: [ 57.771670][ T5053] [ 57.774599][ T5053] ? show_regs+0x8f/0xa0 [ 57.778830][ T5053] ? __warn+0xe6/0x390 [ 57.782949][ T5053] ? skb_checksum_help+0x527/0x740 [ 57.788087][ T5053] ? report_bug+0x3bc/0x580 [ 57.792638][ T5053] ? handle_bug+0x3d/0x70 [ 57.796978][ T5053] ? exc_invalid_op+0x17/0x40 [ 57.801703][ T5053] ? asm_exc_invalid_op+0x1a/0x20 [ 57.806757][ T5053] ? __warn_printk+0x199/0x350 [ 57.811556][ T5053] ? __warn_printk+0x1a6/0x350 [ 57.816338][ T5053] ? skb_checksum_help+0x527/0x740 [ 57.821485][ T5053] ? skb_checksum_help+0x526/0x740 [ 57.826615][ T5053] ip_do_fragment+0xa15/0x18a0 [ 57.831447][ T5053] ? ip_fragment.constprop.0+0x230/0x230 [ 57.837140][ T5053] ? ip_skb_dst_mtu+0xc60/0xc60 [ 57.842062][ T5053] ? kfree_skbmem+0xef/0x1b0 [ 57.846648][ T5053] ? __kasan_slab_free+0x12c/0x1b0 [ 57.851781][ T5053] ? kmem_cache_free+0x129/0x350 [ 57.856733][ T5053] ? skb_release_data+0x5bf/0x870 [ 57.861785][ T5053] ? kfree_skbmem+0xef/0x1b0 [ 57.866396][ T5053] ip_fragment.constprop.0+0x161/0x230 [ 57.871911][ T5053] __ip_finish_output+0x49c/0x650 [ 57.876970][ T5053] ip_finish_output+0x31/0x310 [ 57.881780][ T5053] ip_mc_output+0x1dd/0x6a0 [ 57.886302][ T5053] ? __get_random_u32_below+0x4e/0xa0 [ 57.891711][ T5053] ip_local_out+0xaf/0x1a0 [ 57.896149][ T5053] iptunnel_xmit+0x5b4/0x9b0 [ 57.900773][ T5053] ip_tunnel_xmit+0x1daa/0x33b0 [ 57.905642][ T5053] ? reacquire_held_locks+0x430/0x4c0 [ 57.911060][ T5053] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 57.916367][ T5053] ? __gre_xmit+0x4f5/0x990 [ 57.920910][ T5053] ipgre_xmit+0x49b/0x980 [ 57.925254][ T5053] dev_hard_start_xmit+0x137/0x6d0 [ 57.930414][ T5053] __dev_queue_xmit+0x7b6/0x3ed0 [ 57.935354][ T5053] ? _copy_from_iter+0x2c1/0x10f0 [ 57.940402][ T5053] ? netdev_core_pick_tx+0x370/0x370 [ 57.945707][ T5053] ? skb_partial_csum_set+0x202/0x390 [ 57.951156][ T5053] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 57.957808][ T5053] ? packet_create+0x8e0/0x8e0 [ 57.962646][ T5053] packet_xmit+0x237/0x350 [ 57.967104][ T5053] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 57.973067][ T5053] packet_sendmsg+0x24a6/0x51e0 [ 57.977957][ T5053] ? kfence_report_error+0xaa0/0xda0 [ 57.983292][ T5053] ? preempt_count_sub+0x160/0x160 [ 57.988448][ T5053] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 57.994419][ T5053] ? aa_sk_perm+0x2f8/0xb40 [ 57.998960][ T5053] ? packet_notifier+0x8c0/0x8c0 [ 58.003969][ T5053] ? aa_af_perm+0x250/0x250 [ 58.008515][ T5053] ? import_ubuf+0x1a4/0x200 [ 58.013146][ T5053] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 58.018468][ T5053] ? packet_notifier+0x8c0/0x8c0 [ 58.023461][ T5053] __sock_sendmsg+0xd5/0x180 [ 58.028094][ T5053] ____sys_sendmsg+0x6ac/0x940 [ 58.032915][ T5053] ? copy_msghdr_from_user+0x10b/0x160 [ 58.038414][ T5053] ? kernel_sendmsg+0x50/0x50 [ 58.043556][ T5053] ? finish_task_switch.isra.0+0x219/0xca0 [ 58.049367][ T5053] ? __switch_to+0x75d/0x1380 [ 58.054133][ T5053] ___sys_sendmsg+0x135/0x1d0 [ 58.058903][ T5053] ? do_recvmmsg+0x740/0x740 [ 58.063577][ T5053] ? lock_sync+0x190/0x190 [ 58.068024][ T5053] ? ptrace_stop.part.0+0x457/0x950 [ 58.073295][ T5053] ? __fget_light+0x173/0x200 [ 58.078016][ T5053] __sys_sendmsg+0x117/0x1e0 [ 58.082673][ T5053] ? __sys_sendmsg_sock+0x30/0x30 [ 58.087724][ T5053] ? ptrace_notify+0xf4/0x130 [ 58.092497][ T5053] ? _raw_spin_unlock_irq+0x2e/0x50 [ 58.097730][ T5053] ? ptrace_notify+0xf4/0x130 [ 58.102440][ T5053] do_syscall_64+0xd3/0x250 [ 58.106957][ T5053] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 58.112893][ T5053] RIP: 0033:0x7f22ce7404d9 [ 58.117326][ T5053] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 58.136989][ T5053] RSP: 002b:00007fffe8f14f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.145440][ T5053] RAX: ffffffffffffffda RBX: 00007f22ce78d390 RCX: 00007f22ce7404d9 [ 58.153460][ T5053] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 58.161492][ T5053] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 58.169481][ T5053] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffe8f14f90 [ 58.177516][ T5053] R13: 00007fffe8f14f60 R14: 0000000000000001 R15: 00007fffe8f14f90 [ 58.185552][ T5053] [ 58.188584][ T5053] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 58.195850][ T5053] CPU: 1 PID: 5053 Comm: syz-executor549 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 [ 58.205900][ T5053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 58.215950][ T5053] Call Trace: [ 58.219226][ T5053] [ 58.222147][ T5053] dump_stack_lvl+0xd9/0x1b0 [ 58.226746][ T5053] panic+0x6dc/0x790 [ 58.230637][ T5053] ? panic_smp_self_stop+0xa0/0xa0 [ 58.235743][ T5053] ? show_trace_log_lvl+0x363/0x4f0 [ 58.240945][ T5053] ? check_panic_on_warn+0x1f/0xb0 [ 58.246054][ T5053] ? skb_checksum_help+0x527/0x740 [ 58.251166][ T5053] check_panic_on_warn+0xab/0xb0 [ 58.256103][ T5053] __warn+0xf2/0x390 [ 58.259991][ T5053] ? skb_checksum_help+0x527/0x740 [ 58.265099][ T5053] report_bug+0x3bc/0x580 [ 58.269426][ T5053] handle_bug+0x3d/0x70 [ 58.273577][ T5053] exc_invalid_op+0x17/0x40 [ 58.278075][ T5053] asm_exc_invalid_op+0x1a/0x20 [ 58.282929][ T5053] RIP: 0010:skb_checksum_help+0x527/0x740 [ 58.288641][ T5053] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00 02 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 00 19 ea 8b e8 fa 62 d5 f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 3b 6c 0f f9 44 0f b6 25 04 09 ac 06 [ 58.308244][ T5053] RSP: 0018:ffffc90003c0f088 EFLAGS: 00010286 [ 58.314304][ T5053] RAX: 0000000000000000 RBX: ffff888023b20500 RCX: ffffffff814e08e9 [ 58.322263][ T5053] RDX: ffff88801b321dc0 RSI: ffffffff814e08f6 RDI: 0000000000000001 [ 58.330222][ T5053] RBP: ffff888023b20574 R08: 0000000000000001 R09: 0000000000000000 [ 58.338187][ T5053] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 58.346153][ T5053] R13: 0000000000000529 R14: ffff888023b20570 R15: 00000000000005d1 [ 58.354129][ T5053] ? __warn_printk+0x199/0x350 [ 58.358903][ T5053] ? __warn_printk+0x1a6/0x350 [ 58.363672][ T5053] ? skb_checksum_help+0x526/0x740 [ 58.368779][ T5053] ip_do_fragment+0xa15/0x18a0 [ 58.373552][ T5053] ? ip_fragment.constprop.0+0x230/0x230 [ 58.379187][ T5053] ? ip_skb_dst_mtu+0xc60/0xc60 [ 58.384044][ T5053] ? kfree_skbmem+0xef/0x1b0 [ 58.388636][ T5053] ? __kasan_slab_free+0x12c/0x1b0 [ 58.393744][ T5053] ? kmem_cache_free+0x129/0x350 [ 58.398678][ T5053] ? skb_release_data+0x5bf/0x870 [ 58.403714][ T5053] ? kfree_skbmem+0xef/0x1b0 [ 58.408314][ T5053] ip_fragment.constprop.0+0x161/0x230 [ 58.413791][ T5053] __ip_finish_output+0x49c/0x650 [ 58.418818][ T5053] ip_finish_output+0x31/0x310 [ 58.423586][ T5053] ip_mc_output+0x1dd/0x6a0 [ 58.428088][ T5053] ? __get_random_u32_below+0x4e/0xa0 [ 58.433460][ T5053] ip_local_out+0xaf/0x1a0 [ 58.437882][ T5053] iptunnel_xmit+0x5b4/0x9b0 [ 58.442478][ T5053] ip_tunnel_xmit+0x1daa/0x33b0 [ 58.447325][ T5053] ? reacquire_held_locks+0x430/0x4c0 [ 58.452701][ T5053] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 58.457981][ T5053] ? __gre_xmit+0x4f5/0x990 [ 58.462476][ T5053] ipgre_xmit+0x49b/0x980 [ 58.466796][ T5053] dev_hard_start_xmit+0x137/0x6d0 [ 58.471905][ T5053] __dev_queue_xmit+0x7b6/0x3ed0 [ 58.476839][ T5053] ? _copy_from_iter+0x2c1/0x10f0 [ 58.481855][ T5053] ? netdev_core_pick_tx+0x370/0x370 [ 58.487137][ T5053] ? skb_partial_csum_set+0x202/0x390 [ 58.492514][ T5053] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 58.499106][ T5053] ? packet_create+0x8e0/0x8e0 [ 58.503866][ T5053] packet_xmit+0x237/0x350 [ 58.508277][ T5053] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 58.514175][ T5053] packet_sendmsg+0x24a6/0x51e0 [ 58.519029][ T5053] ? kfence_report_error+0xaa0/0xda0 [ 58.524314][ T5053] ? preempt_count_sub+0x160/0x160 [ 58.529416][ T5053] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 58.535310][ T5053] ? aa_sk_perm+0x2f8/0xb40 [ 58.539809][ T5053] ? packet_notifier+0x8c0/0x8c0 [ 58.544743][ T5053] ? aa_af_perm+0x250/0x250 [ 58.549242][ T5053] ? import_ubuf+0x1a4/0x200 [ 58.553830][ T5053] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 58.559123][ T5053] ? packet_notifier+0x8c0/0x8c0 [ 58.564080][ T5053] __sock_sendmsg+0xd5/0x180 [ 58.568682][ T5053] ____sys_sendmsg+0x6ac/0x940 [ 58.573453][ T5053] ? copy_msghdr_from_user+0x10b/0x160 [ 58.578918][ T5053] ? kernel_sendmsg+0x50/0x50 [ 58.583590][ T5053] ? finish_task_switch.isra.0+0x219/0xca0 [ 58.589404][ T5053] ? __switch_to+0x75d/0x1380 [ 58.594123][ T5053] ___sys_sendmsg+0x135/0x1d0 [ 58.598807][ T5053] ? do_recvmmsg+0x740/0x740 [ 58.603403][ T5053] ? lock_sync+0x190/0x190 [ 58.607809][ T5053] ? ptrace_stop.part.0+0x457/0x950 [ 58.613008][ T5053] ? __fget_light+0x173/0x200 [ 58.617689][ T5053] __sys_sendmsg+0x117/0x1e0 [ 58.622281][ T5053] ? __sys_sendmsg_sock+0x30/0x30 [ 58.627303][ T5053] ? ptrace_notify+0xf4/0x130 [ 58.631979][ T5053] ? _raw_spin_unlock_irq+0x2e/0x50 [ 58.637178][ T5053] ? ptrace_notify+0xf4/0x130 [ 58.641851][ T5053] do_syscall_64+0xd3/0x250 [ 58.646352][ T5053] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 58.652256][ T5053] RIP: 0033:0x7f22ce7404d9 [ 58.656660][ T5053] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 58.676262][ T5053] RSP: 002b:00007fffe8f14f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.684668][ T5053] RAX: ffffffffffffffda RBX: 00007f22ce78d390 RCX: 00007f22ce7404d9 [ 58.692630][ T5053] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 58.700594][ T5053] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 58.708552][ T5053] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffe8f14f90 [ 58.716515][ T5053] R13: 00007fffe8f14f60 R14: 0000000000000001 R15: 00007fffe8f14f90 [ 58.724493][ T5053] [ 58.727748][ T5053] Kernel Offset: disabled [ 58.732061][ T5053] Rebooting in 86400 seconds..