./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3870482161 <...> Warning: Permanently added '10.128.0.254' (ED25519) to the list of known hosts. execve("./syz-executor3870482161", ["./syz-executor3870482161"], 0x7ffe9d71ccc0 /* 10 vars */) = 0 brk(NULL) = 0x55556db04000 brk(0x55556db04d00) = 0x55556db04d00 arch_prctl(ARCH_SET_FS, 0x55556db04380) = 0 set_tid_address(0x55556db04650) = 5066 set_robust_list(0x55556db04660, 24) = 0 rseq(0x55556db04ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3870482161", 4096) = 28 getrandom("\x30\xba\xce\xfd\x68\x3e\xcb\x9e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556db04d00 brk(0x55556db25d00) = 0x55556db25d00 brk(0x55556db26000) = 0x55556db26000 mprotect(0x7fb5473b6000, 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 5067 attached , child_tidptr=0x55556db04650) = 5067 [pid 5067] set_robust_list(0x55556db04660, 24) = 0 [pid 5067] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setsid() = 1 [pid 5067] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5067] unshare(CLONE_NEWNS) = 0 [pid 5067] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5067] unshare(CLONE_NEWIPC) = 0 [pid 5067] unshare(CLONE_NEWCGROUP) = 0 [pid 5067] unshare(CLONE_NEWUTS) = 0 [pid 5067] unshare(CLONE_SYSVSEM) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "16777216", 8) = 8 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "536870912", 9) = 9 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "8192", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5067] close(3) = 0 [pid 5067] getpid() = 1 [pid 5067] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (10647) [ 65.054513][ T5067] WARNING: CPU: 0 PID: 5067 at net/core/dev.c:3287 skb_checksum_help+0x68f/0x730 [ 65.063704][ T5067] Modules linked in: [ 65.067669][ T5067] CPU: 0 PID: 5067 Comm: syz-executor387 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0 [ 65.077768][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 65.087876][ T5067] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 65.093586][ T5067] 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 20 f3 9f 8c 4c 89 f6 89 da e8 42 50 12 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 65.113226][ T5067] RSP: 0018:ffffc90003a6eba8 EFLAGS: 00010246 [ 65.119324][ T5067] RAX: 12c3d6bc2eeaba00 RBX: 0000000000002997 RCX: ffff8880225b1e00 [ 65.127356][ T5067] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 65.135328][ T5067] RBP: dffffc0000000000 R08: ffffffff8157cc12 R09: 1ffff9200074dd14 [ 65.143336][ T5067] R10: dffffc0000000000 R11: fffff5200074dd15 R12: 1ffff11005a3bcfe [ 65.151335][ T5067] R13: 0000000000003534 R14: 0000000000003536 R15: ffff88802d1de780 [ 65.159329][ T5067] FS: 000055556db04380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 65.168281][ T5067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.174852][ T5067] CR2: 000000002000d000 CR3: 000000004edce000 CR4: 00000000003506f0 [ 65.182849][ T5067] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.190850][ T5067] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.198848][ T5067] Call Trace: [ 65.202142][ T5067] [ 65.205059][ T5067] ? __warn+0x163/0x4b0 [ 65.209257][ T5067] ? skb_checksum_help+0x68f/0x730 [ 65.214383][ T5067] ? report_bug+0x2b3/0x500 [ 65.218941][ T5067] ? skb_checksum_help+0x68f/0x730 [ 65.224062][ T5067] ? handle_bug+0x3e/0x70 [ 65.228430][ T5067] ? exc_invalid_op+0x1a/0x50 [ 65.233122][ T5067] ? asm_exc_invalid_op+0x1a/0x20 [ 65.238186][ T5067] ? __warn_printk+0x292/0x360 [ 65.242962][ T5067] ? skb_checksum_help+0x68f/0x730 [ 65.248190][ T5067] ? skb_checksum_help+0x68e/0x730 [ 65.253310][ T5067] validate_xmit_skb+0xc1f/0x1120 [ 65.258378][ T5067] ? rcu_read_lock_bh_held+0x7e/0x120 [ 65.263841][ T5067] ? __pfx_validate_xmit_skb+0x10/0x10 [ 65.269342][ T5067] __dev_queue_xmit+0x1640/0x3b10 [ 65.274380][ T5067] ? __dev_queue_xmit+0x2c4/0x3b10 [ 65.279530][ T5067] ? __pfx___dev_queue_xmit+0x10/0x10 [ 65.284993][ T5067] ? __pfx_lock_acquire+0x10/0x10 [ 65.290097][ T5067] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 65.296095][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.302473][ T5067] ? ip_finish_output2+0xa14/0x1380 [ 65.307713][ T5067] ? ip_finish_output2+0x45f/0x1380 [ 65.312924][ T5067] ip_finish_output2+0xd41/0x1380 [ 65.318037][ T5067] ? ip_finish_output2+0x45f/0x1380 [ 65.323259][ T5067] ? __pfx_ip_finish_output2+0x10/0x10 [ 65.328781][ T5067] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 65.333751][ T5067] ? __ip_finish_output+0x347/0x400 [ 65.339033][ T5067] iptunnel_xmit+0x540/0x9b0 [ 65.343684][ T5067] ip_tunnel_xmit+0x20ef/0x2940 [ 65.348600][ T5067] ? __sock_sendmsg+0x221/0x270 [ 65.353460][ T5067] ? ____sys_sendmsg+0x525/0x7d0 [ 65.358462][ T5067] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 65.363672][ T5067] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 65.369697][ T5067] ? gre_build_header+0x25b/0x990 [ 65.374733][ T5067] ipgre_xmit+0x854/0xc30 [ 65.379115][ T5067] dev_hard_start_xmit+0x26a/0x790 [ 65.384243][ T5067] __dev_queue_xmit+0x19f4/0x3b10 [ 65.389315][ T5067] ? __dev_queue_xmit+0x2c4/0x3b10 [ 65.394433][ T5067] ? skb_partial_csum_set+0x105/0x350 [ 65.399843][ T5067] ? __pfx___dev_queue_xmit+0x10/0x10 [ 65.405223][ T5067] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 65.410802][ T5067] ? packet_parse_headers+0x7bd/0xad0 [ 65.416190][ T5067] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 65.422037][ T5067] ? packet_xmit+0x68/0x330 [ 65.426576][ T5067] packet_sendmsg+0x46a9/0x6130 [ 65.431435][ T5067] ? __pfx___might_resched+0x10/0x10 [ 65.436764][ T5067] ? aa_sk_perm+0x967/0xab0 [ 65.441274][ T5067] ? __pfx_packet_sendmsg+0x10/0x10 [ 65.446460][ T5067] ? __import_iovec+0x361/0x820 [ 65.451371][ T5067] ? aa_sock_msg_perm+0x91/0x160 [ 65.456295][ T5067] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 65.461606][ T5067] ? security_socket_sendmsg+0x87/0xb0 [ 65.467097][ T5067] ? __pfx_packet_sendmsg+0x10/0x10 [ 65.472281][ T5067] __sock_sendmsg+0x221/0x270 [ 65.477008][ T5067] ____sys_sendmsg+0x525/0x7d0 [ 65.481791][ T5067] ? __pfx_____sys_sendmsg+0x10/0x10 [ 65.487113][ T5067] ? do_raw_spin_lock+0x14f/0x370 [ 65.492156][ T5067] __sys_sendmsg+0x2b0/0x3a0 [ 65.496780][ T5067] ? __pfx___sys_sendmsg+0x10/0x10 [ 65.501902][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.508271][ T5067] ? _raw_spin_unlock_irq+0x2e/0x50 [ 65.513476][ T5067] ? ptrace_notify+0x279/0x380 [ 65.518309][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.524639][ T5067] ? exc_page_fault+0x585/0x890 [ 65.529540][ T5067] ? syscall_trace_enter+0x5f/0x150 [ 65.534751][ T5067] do_syscall_64+0xfb/0x240 [ 65.539299][ T5067] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 65.545203][ T5067] RIP: 0033:0x7fb54733e4d9 [ 65.549684][ T5067] 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 [ 65.569330][ T5067] RSP: 002b:00007ffc05f89778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.577776][ T5067] RAX: ffffffffffffffda RBX: 00007fb54738b390 RCX: 00007fb54733e4d9 [ 65.585752][ T5067] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 65.593794][ T5067] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 65.601808][ T5067] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc05f897c0 [ 65.609831][ T5067] R13: 00007ffc05f89790 R14: 0000000000000001 R15: 00007ffc05f897c0 [ 65.617852][ T5067] [ 65.620861][ T5067] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 65.628119][ T5067] CPU: 0 PID: 5067 Comm: syz-executor387 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0 [ 65.638179][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 65.648221][ T5067] Call Trace: [ 65.651489][ T5067] [ 65.654404][ T5067] dump_stack_lvl+0x1e7/0x2e0 [ 65.659072][ T5067] ? __pfx_dump_stack_lvl+0x10/0x10 [ 65.664598][ T5067] ? __pfx__printk+0x10/0x10 [ 65.669174][ T5067] ? vscnprintf+0x5d/0x90 [ 65.673488][ T5067] panic+0x349/0x860 [ 65.677386][ T5067] ? __warn+0x172/0x4b0 [ 65.681562][ T5067] ? __pfx_panic+0x10/0x10 [ 65.685975][ T5067] __warn+0x31e/0x4b0 [ 65.689947][ T5067] ? skb_checksum_help+0x68f/0x730 [ 65.695046][ T5067] report_bug+0x2b3/0x500 [ 65.699363][ T5067] ? skb_checksum_help+0x68f/0x730 [ 65.704464][ T5067] handle_bug+0x3e/0x70 [ 65.708606][ T5067] exc_invalid_op+0x1a/0x50 [ 65.713093][ T5067] asm_exc_invalid_op+0x1a/0x20 [ 65.717932][ T5067] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 65.723636][ T5067] 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 20 f3 9f 8c 4c 89 f6 89 da e8 42 50 12 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 65.743234][ T5067] RSP: 0018:ffffc90003a6eba8 EFLAGS: 00010246 [ 65.749304][ T5067] RAX: 12c3d6bc2eeaba00 RBX: 0000000000002997 RCX: ffff8880225b1e00 [ 65.757263][ T5067] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 65.765241][ T5067] RBP: dffffc0000000000 R08: ffffffff8157cc12 R09: 1ffff9200074dd14 [ 65.773201][ T5067] R10: dffffc0000000000 R11: fffff5200074dd15 R12: 1ffff11005a3bcfe [ 65.781169][ T5067] R13: 0000000000003534 R14: 0000000000003536 R15: ffff88802d1de780 [ 65.789138][ T5067] ? __warn_printk+0x292/0x360 [ 65.793993][ T5067] ? skb_checksum_help+0x68e/0x730 [ 65.799095][ T5067] validate_xmit_skb+0xc1f/0x1120 [ 65.804119][ T5067] ? rcu_read_lock_bh_held+0x7e/0x120 [ 65.809482][ T5067] ? __pfx_validate_xmit_skb+0x10/0x10 [ 65.814940][ T5067] __dev_queue_xmit+0x1640/0x3b10 [ 65.819959][ T5067] ? __dev_queue_xmit+0x2c4/0x3b10 [ 65.825055][ T5067] ? __pfx___dev_queue_xmit+0x10/0x10 [ 65.830424][ T5067] ? __pfx_lock_acquire+0x10/0x10 [ 65.835435][ T5067] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 65.841412][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.847725][ T5067] ? ip_finish_output2+0xa14/0x1380 [ 65.852910][ T5067] ? ip_finish_output2+0x45f/0x1380 [ 65.858091][ T5067] ip_finish_output2+0xd41/0x1380 [ 65.863101][ T5067] ? ip_finish_output2+0x45f/0x1380 [ 65.868287][ T5067] ? __pfx_ip_finish_output2+0x10/0x10 [ 65.873731][ T5067] ? ip_skb_dst_mtu+0x6ba/0x9b0 [ 65.878576][ T5067] ? __ip_finish_output+0x347/0x400 [ 65.883765][ T5067] iptunnel_xmit+0x540/0x9b0 [ 65.888349][ T5067] ip_tunnel_xmit+0x20ef/0x2940 [ 65.893183][ T5067] ? __sock_sendmsg+0x221/0x270 [ 65.898018][ T5067] ? ____sys_sendmsg+0x525/0x7d0 [ 65.902949][ T5067] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 65.908129][ T5067] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 65.914094][ T5067] ? gre_build_header+0x25b/0x990 [ 65.919116][ T5067] ipgre_xmit+0x854/0xc30 [ 65.923432][ T5067] dev_hard_start_xmit+0x26a/0x790 [ 65.928538][ T5067] __dev_queue_xmit+0x19f4/0x3b10 [ 65.933571][ T5067] ? __dev_queue_xmit+0x2c4/0x3b10 [ 65.938664][ T5067] ? skb_partial_csum_set+0x105/0x350 [ 65.944018][ T5067] ? __pfx___dev_queue_xmit+0x10/0x10 [ 65.949381][ T5067] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 65.954927][ T5067] ? packet_parse_headers+0x7bd/0xad0 [ 65.960301][ T5067] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 65.966094][ T5067] ? packet_xmit+0x68/0x330 [ 65.970592][ T5067] packet_sendmsg+0x46a9/0x6130 [ 65.975446][ T5067] ? __pfx___might_resched+0x10/0x10 [ 65.980823][ T5067] ? aa_sk_perm+0x967/0xab0 [ 65.985312][ T5067] ? __pfx_packet_sendmsg+0x10/0x10 [ 65.990531][ T5067] ? __import_iovec+0x361/0x820 [ 65.995375][ T5067] ? aa_sock_msg_perm+0x91/0x160 [ 66.000314][ T5067] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 66.005586][ T5067] ? security_socket_sendmsg+0x87/0xb0 [ 66.011038][ T5067] ? __pfx_packet_sendmsg+0x10/0x10 [ 66.016221][ T5067] __sock_sendmsg+0x221/0x270 [ 66.020887][ T5067] ____sys_sendmsg+0x525/0x7d0 [ 66.025647][ T5067] ? __pfx_____sys_sendmsg+0x10/0x10 [ 66.030928][ T5067] ? do_raw_spin_lock+0x14f/0x370 [ 66.035948][ T5067] __sys_sendmsg+0x2b0/0x3a0 [ 66.040524][ T5067] ? __pfx___sys_sendmsg+0x10/0x10 [ 66.045622][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 66.051941][ T5067] ? _raw_spin_unlock_irq+0x2e/0x50 [ 66.057127][ T5067] ? ptrace_notify+0x279/0x380 [ 66.061890][ T5067] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 66.068198][ T5067] ? exc_page_fault+0x585/0x890 [ 66.073037][ T5067] ? syscall_trace_enter+0x5f/0x150 [ 66.078225][ T5067] do_syscall_64+0xfb/0x240 [ 66.082720][ T5067] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 66.088600][ T5067] RIP: 0033:0x7fb54733e4d9 [ 66.092997][ T5067] 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 [ 66.112669][ T5067] RSP: 002b:00007ffc05f89778 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.121062][ T5067] RAX: ffffffffffffffda RBX: 00007fb54738b390 RCX: 00007fb54733e4d9 [ 66.129015][ T5067] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 66.136966][ T5067] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 66.144920][ T5067] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc05f897c0 [ 66.152886][ T5067] R13: 00007ffc05f89790 R14: 0000000000000001 R15: 00007ffc05f897c0 [ 66.160862][ T5067] [ 66.164069][ T5067] Kernel Offset: disabled [ 66.168478][ T5067] Rebooting in 86400 seconds..