./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor90352648 <...> Warning: Permanently added '10.128.0.167' (ED25519) to the list of known hosts. execve("./syz-executor90352648", ["./syz-executor90352648"], 0x7ffe0d244cd0 /* 10 vars */) = 0 brk(NULL) = 0x555565b35000 brk(0x555565b35d00) = 0x555565b35d00 arch_prctl(ARCH_SET_FS, 0x555565b35380) = 0 set_tid_address(0x555565b35650) = 5067 set_robust_list(0x555565b35660, 24) = 0 rseq(0x555565b35ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor90352648", 4096) = 26 getrandom("\x76\x12\xc0\x52\x0e\x64\x5b\x34", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555565b35d00 brk(0x555565b56d00) = 0x555565b56d00 brk(0x555565b57000) = 0x555565b57000 mprotect(0x7f7858db7000, 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 5068 attached , child_tidptr=0x555565b35650) = 5068 [pid 5068] set_robust_list(0x555565b35660, 24) = 0 [pid 5068] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setsid() = 1 [pid 5068] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5068] unshare(CLONE_NEWNS) = 0 [pid 5068] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5068] unshare(CLONE_NEWIPC) = 0 [pid 5068] unshare(CLONE_NEWCGROUP) = 0 [pid 5068] unshare(CLONE_NEWUTS) = 0 [pid 5068] unshare(CLONE_SYSVSEM) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "16777216", 8) = 8 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "536870912", 9) = 9 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "8192", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5068] close(3) = 0 [pid 5068] getpid() = 1 [pid 5068] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (10647) [ 80.601871][ T5068] WARNING: CPU: 0 PID: 5068 at net/core/dev.c:3287 skb_checksum_help+0x68f/0x730 [ 80.611092][ T5068] Modules linked in: [ 80.615041][ T5068] CPU: 0 PID: 5068 Comm: syz-executor903 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 [ 80.625163][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 80.635268][ T5068] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 80.641013][ T5068] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 60 73 a0 8c 4c 89 f6 89 da e8 02 05 0e f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 80.660670][ T5068] RSP: 0018:ffffc90003b7eba8 EFLAGS: 00010246 [ 80.666827][ T5068] RAX: 2672111ec6e4cc00 RBX: 0000000000002997 RCX: ffff88802790da00 [ 80.674821][ T5068] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 80.682846][ T5068] RBP: dffffc0000000000 R08: ffffffff8157cc12 R09: 1ffff9200076fd14 [ 80.690868][ T5068] R10: dffffc0000000000 R11: fffff5200076fd15 R12: 1ffff110041ffe0e [ 80.698893][ T5068] R13: 0000000000003534 R14: 0000000000003536 R15: ffff888020fff000 [ 80.706928][ T5068] FS: 0000555565b35380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 80.715942][ T5068] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.722558][ T5068] CR2: 000000002000d000 CR3: 0000000075d56000 CR4: 00000000003506f0 [ 80.730620][ T5068] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.738647][ T5068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.746671][ T5068] Call Trace: [ 80.749968][ T5068] [ 80.752900][ T5068] ? __warn+0x163/0x4b0 [ 80.757116][ T5068] ? skb_checksum_help+0x68f/0x730 [ 80.762260][ T5068] ? report_bug+0x2b3/0x500 [ 80.766869][ T5068] ? skb_checksum_help+0x68f/0x730 [ 80.772013][ T5068] ? handle_bug+0x3e/0x70 [ 80.776411][ T5068] ? exc_invalid_op+0x1a/0x50 [ 80.781125][ T5068] ? asm_exc_invalid_op+0x1a/0x20 [ 80.786213][ T5068] ? __warn_printk+0x292/0x360 [ 80.791014][ T5068] ? skb_checksum_help+0x68f/0x730 [ 80.796197][ T5068] ? skb_checksum_help+0x68e/0x730 [ 80.801340][ T5068] validate_xmit_skb+0xc1f/0x1120 [ 80.806427][ T5068] ? rcu_read_lock_bh_held+0x7e/0x120 [ 80.811822][ T5068] ? __pfx_validate_xmit_skb+0x10/0x10 [ 80.817348][ T5068] __dev_queue_xmit+0x1640/0x3b10 [ 80.822417][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 80.827593][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 80.833006][ T5068] ? __pfx_lock_acquire+0x10/0x10 [ 80.838085][ T5068] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 80.844086][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 80.850504][ T5068] ? ip_finish_output2+0xa14/0x1380 [ 80.855775][ T5068] ? ip_finish_output2+0x45f/0x1380 [ 80.861010][ T5068] ip_finish_output2+0xd41/0x1380 [ 80.866113][ T5068] ? ip_finish_output2+0x45f/0x1380 [ 80.871341][ T5068] ? __pfx_ip_finish_output2+0x10/0x10 [ 80.876849][ T5068] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 80.881719][ T5068] ? __ip_finish_output+0x347/0x400 [ 80.886971][ T5068] iptunnel_xmit+0x540/0x9b0 [ 80.891597][ T5068] ip_tunnel_xmit+0x20ef/0x2940 [ 80.896500][ T5068] ? __sock_sendmsg+0x221/0x270 [ 80.901380][ T5068] ? ____sys_sendmsg+0x525/0x7d0 [ 80.906399][ T5068] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 80.911623][ T5068] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 80.917714][ T5068] ? gre_build_header+0x25b/0x990 [ 80.922804][ T5068] ipgre_xmit+0x854/0xc30 [ 80.927219][ T5068] dev_hard_start_xmit+0x26a/0x790 [ 80.932384][ T5068] __dev_queue_xmit+0x19f4/0x3b10 [ 80.937464][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 80.942578][ T5068] ? skb_partial_csum_set+0x105/0x350 [ 80.947997][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 80.953413][ T5068] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 80.959019][ T5068] ? packet_parse_headers+0x7bd/0xad0 [ 80.964447][ T5068] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 80.970332][ T5068] ? packet_xmit+0x68/0x330 [ 80.974893][ T5068] packet_sendmsg+0x4932/0x63d0 [ 80.979858][ T5068] ? __lock_acquire+0x1346/0x1fd0 [ 80.984954][ T5068] ? __pfx___might_resched+0x10/0x10 [ 80.990300][ T5068] ? aa_sk_perm+0x967/0xab0 [ 80.994848][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 81.000132][ T5068] ? __import_iovec+0x361/0x820 [ 81.005063][ T5068] ? aa_sock_msg_perm+0x91/0x160 [ 81.010053][ T5068] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.015416][ T5068] ? security_socket_sendmsg+0x87/0xb0 [ 81.020905][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 81.026148][ T5068] __sock_sendmsg+0x221/0x270 [ 81.030869][ T5068] ____sys_sendmsg+0x525/0x7d0 [ 81.035728][ T5068] ? __pfx_____sys_sendmsg+0x10/0x10 [ 81.041067][ T5068] ? do_raw_spin_lock+0x14f/0x370 [ 81.046177][ T5068] __sys_sendmsg+0x2b0/0x3a0 [ 81.050820][ T5068] ? __pfx___sys_sendmsg+0x10/0x10 [ 81.056005][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 81.062367][ T5068] ? _raw_spin_unlock_irq+0x2e/0x50 [ 81.067624][ T5068] ? ptrace_notify+0x279/0x380 [ 81.072430][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 81.078817][ T5068] ? exc_page_fault+0x585/0x890 [ 81.083714][ T5068] ? syscall_trace_enter+0x5f/0x150 [ 81.088977][ T5068] do_syscall_64+0xfb/0x240 [ 81.093517][ T5068] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 81.099460][ T5068] RIP: 0033:0x7f7858d3f4d9 [ 81.103897][ T5068] 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 [ 81.123565][ T5068] RSP: 002b:00007ffd8d03d1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.132072][ T5068] RAX: ffffffffffffffda RBX: 00007f7858d8c390 RCX: 00007f7858d3f4d9 [ 81.140130][ T5068] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.148185][ T5068] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 81.156232][ T5068] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd8d03d220 [ 81.164248][ T5068] R13: 00007ffd8d03d1f0 R14: 0000000000000001 R15: 00007ffd8d03d220 [ 81.172313][ T5068] [ 81.175399][ T5068] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 81.182690][ T5068] CPU: 0 PID: 5068 Comm: syz-executor903 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0 [ 81.192774][ T5068] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 81.202828][ T5068] Call Trace: [ 81.206104][ T5068] [ 81.209031][ T5068] dump_stack_lvl+0x241/0x360 [ 81.213718][ T5068] ? __pfx_dump_stack_lvl+0x10/0x10 [ 81.218940][ T5068] ? __pfx__printk+0x10/0x10 [ 81.223640][ T5068] ? vscnprintf+0x5d/0x90 [ 81.227976][ T5068] panic+0x349/0x860 [ 81.231890][ T5068] ? __warn+0x172/0x4b0 [ 81.236064][ T5068] ? __pfx_panic+0x10/0x10 [ 81.240540][ T5068] __warn+0x31e/0x4b0 [ 81.244554][ T5068] ? skb_checksum_help+0x68f/0x730 [ 81.249685][ T5068] report_bug+0x2b3/0x500 [ 81.254022][ T5068] ? skb_checksum_help+0x68f/0x730 [ 81.259157][ T5068] handle_bug+0x3e/0x70 [ 81.263317][ T5068] exc_invalid_op+0x1a/0x50 [ 81.267911][ T5068] asm_exc_invalid_op+0x1a/0x20 [ 81.272757][ T5068] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 81.278479][ T5068] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 60 73 a0 8c 4c 89 f6 89 da e8 02 05 0e f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 81.298086][ T5068] RSP: 0018:ffffc90003b7eba8 EFLAGS: 00010246 [ 81.304159][ T5068] RAX: 2672111ec6e4cc00 RBX: 0000000000002997 RCX: ffff88802790da00 [ 81.312131][ T5068] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 81.320104][ T5068] RBP: dffffc0000000000 R08: ffffffff8157cc12 R09: 1ffff9200076fd14 [ 81.328173][ T5068] R10: dffffc0000000000 R11: fffff5200076fd15 R12: 1ffff110041ffe0e [ 81.336153][ T5068] R13: 0000000000003534 R14: 0000000000003536 R15: ffff888020fff000 [ 81.344139][ T5068] ? __warn_printk+0x292/0x360 [ 81.348929][ T5068] ? skb_checksum_help+0x68e/0x730 [ 81.354059][ T5068] validate_xmit_skb+0xc1f/0x1120 [ 81.359106][ T5068] ? rcu_read_lock_bh_held+0x7e/0x120 [ 81.364483][ T5068] ? __pfx_validate_xmit_skb+0x10/0x10 [ 81.369961][ T5068] __dev_queue_xmit+0x1640/0x3b10 [ 81.375016][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 81.380142][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 81.385548][ T5068] ? __pfx_lock_acquire+0x10/0x10 [ 81.390584][ T5068] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 81.396574][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 81.402913][ T5068] ? ip_finish_output2+0xa14/0x1380 [ 81.408122][ T5068] ? ip_finish_output2+0x45f/0x1380 [ 81.413320][ T5068] ip_finish_output2+0xd41/0x1380 [ 81.418347][ T5068] ? ip_finish_output2+0x45f/0x1380 [ 81.423552][ T5068] ? __pfx_ip_finish_output2+0x10/0x10 [ 81.429042][ T5068] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 81.433909][ T5068] ? __ip_finish_output+0x347/0x400 [ 81.439119][ T5068] iptunnel_xmit+0x540/0x9b0 [ 81.443732][ T5068] ip_tunnel_xmit+0x20ef/0x2940 [ 81.448599][ T5068] ? __sock_sendmsg+0x221/0x270 [ 81.453456][ T5068] ? ____sys_sendmsg+0x525/0x7d0 [ 81.458428][ T5068] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 81.463636][ T5068] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 81.469627][ T5068] ? gre_build_header+0x25b/0x990 [ 81.474668][ T5068] ipgre_xmit+0x854/0xc30 [ 81.479025][ T5068] dev_hard_start_xmit+0x26a/0x790 [ 81.484159][ T5068] __dev_queue_xmit+0x19f4/0x3b10 [ 81.489206][ T5068] ? __dev_queue_xmit+0x2c4/0x3b10 [ 81.494330][ T5068] ? skb_partial_csum_set+0x105/0x350 [ 81.499717][ T5068] ? __pfx___dev_queue_xmit+0x10/0x10 [ 81.505100][ T5068] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 81.510658][ T5068] ? packet_parse_headers+0x7bd/0xad0 [ 81.516059][ T5068] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 81.521880][ T5068] ? packet_xmit+0x68/0x330 [ 81.526402][ T5068] packet_sendmsg+0x4932/0x63d0 [ 81.531276][ T5068] ? __lock_acquire+0x1346/0x1fd0 [ 81.536307][ T5068] ? __pfx___might_resched+0x10/0x10 [ 81.541614][ T5068] ? aa_sk_perm+0x967/0xab0 [ 81.546131][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 81.551342][ T5068] ? __import_iovec+0x361/0x820 [ 81.556200][ T5068] ? aa_sock_msg_perm+0x91/0x160 [ 81.561153][ T5068] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.566447][ T5068] ? security_socket_sendmsg+0x87/0xb0 [ 81.571915][ T5068] ? __pfx_packet_sendmsg+0x10/0x10 [ 81.577119][ T5068] __sock_sendmsg+0x221/0x270 [ 81.581806][ T5068] ____sys_sendmsg+0x525/0x7d0 [ 81.586589][ T5068] ? __pfx_____sys_sendmsg+0x10/0x10 [ 81.591884][ T5068] ? do_raw_spin_lock+0x14f/0x370 [ 81.596950][ T5068] __sys_sendmsg+0x2b0/0x3a0 [ 81.601553][ T5068] ? __pfx___sys_sendmsg+0x10/0x10 [ 81.606682][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 81.613024][ T5068] ? _raw_spin_unlock_irq+0x2e/0x50 [ 81.618243][ T5068] ? ptrace_notify+0x279/0x380 [ 81.623028][ T5068] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 81.629360][ T5068] ? exc_page_fault+0x585/0x890 [ 81.634221][ T5068] ? syscall_trace_enter+0x5f/0x150 [ 81.639437][ T5068] do_syscall_64+0xfb/0x240 [ 81.643957][ T5068] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 81.649854][ T5068] RIP: 0033:0x7f7858d3f4d9 [ 81.654290][ T5068] 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 [ 81.673897][ T5068] RSP: 002b:00007ffd8d03d1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.682315][ T5068] RAX: ffffffffffffffda RBX: 00007f7858d8c390 RCX: 00007f7858d3f4d9 [ 81.690286][ T5068] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.698256][ T5068] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 81.706223][ T5068] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd8d03d220 [ 81.714195][ T5068] R13: 00007ffd8d03d1f0 R14: 0000000000000001 R15: 00007ffd8d03d220 [ 81.722184][ T5068] [ 81.725505][ T5068] Kernel Offset: disabled [ 81.729860][ T5068] Rebooting in 86400 seconds..