./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor460286638 <...> Warning: Permanently added '10.128.1.125' (ED25519) to the list of known hosts. execve("./syz-executor460286638", ["./syz-executor460286638"], 0x7fff03923020 /* 10 vars */) = 0 brk(NULL) = 0x55556751a000 brk(0x55556751ad00) = 0x55556751ad00 arch_prctl(ARCH_SET_FS, 0x55556751a380) = 0 set_tid_address(0x55556751a650) = 5093 set_robust_list(0x55556751a660, 24) = 0 rseq(0x55556751aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor460286638", 4096) = 27 getrandom("\x21\x2b\xa3\xea\x5e\xf1\x68\x99", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556751ad00 brk(0x55556753bd00) = 0x55556753bd00 brk(0x55556753c000) = 0x55556753c000 mprotect(0x7fd6f6b25000, 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=0x55556751a650) = 5094 ./strace-static-x86_64: Process 5094 attached [pid 5094] set_robust_list(0x55556751a660, 24) = 0 [pid 5094] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5094] setsid() = 1 [pid 5094] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5094] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5094] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5094] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5094] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5094] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5094] unshare(CLONE_NEWNS) = 0 [pid 5094] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5094] unshare(CLONE_NEWIPC) = 0 [pid 5094] unshare(CLONE_NEWCGROUP) = 0 [pid 5094] unshare(CLONE_NEWUTS) = 0 [pid 5094] unshare(CLONE_SYSVSEM) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "16777216", 8) = 8 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "536870912", 9) = 9 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1024", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "8192", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1024", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1024", 4) = 4 [pid 5094] close(3) = 0 [pid 5094] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5094] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5094] close(3) = 0 [pid 5094] getpid() = 1 [pid 5094] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (1651) [ 84.317610][ T5094] WARNING: CPU: 0 PID: 5094 at net/core/dev.c:3336 skb_checksum_help+0x68f/0x730 [ 84.326899][ T5094] Modules linked in: [ 84.330960][ T5094] CPU: 0 PID: 5094 Comm: syz-executor460 Not tainted 6.10.0-rc5-syzkaller-01137-g1c5fc27bc48a #0 [ 84.341556][ T5094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 84.351689][ T5094] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 84.357470][ T5094] 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 7d c5 8c 4c 89 f6 89 da e8 52 48 00 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 84.377260][ T5094] RSP: 0018:ffffc90003ff6d28 EFLAGS: 00010246 [ 84.383404][ T5094] RAX: a57c87a2cf31ab00 RBX: 0000000000000673 RCX: ffff888022adbc00 [ 84.391447][ T5094] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 84.399457][ T5094] RBP: dffffc0000000000 R08: ffffffff81585802 R09: 1ffff1101728519a [ 84.407519][ T5094] R10: dffffc0000000000 R11: ffffed101728519b R12: 1ffff11003c9dad6 [ 84.415573][ T5094] R13: 0000000000009e73 R14: 0000000000009e75 R15: ffff88801e4ed640 [ 84.423619][ T5094] FS: 000055556751a380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 84.432624][ T5094] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.439231][ T5094] CR2: 000000002000e000 CR3: 0000000078dde000 CR4: 00000000003506f0 [ 84.447303][ T5094] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.455354][ T5094] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.463556][ T5094] Call Trace: [ 84.466862][ T5094] [ 84.469854][ T5094] ? __warn+0x163/0x4e0 [ 84.474129][ T5094] ? skb_checksum_help+0x68f/0x730 [ 84.479258][ T5094] ? report_bug+0x2b3/0x500 [ 84.483852][ T5094] ? skb_checksum_help+0x68f/0x730 [ 84.489014][ T5094] ? handle_bug+0x3e/0x70 [ 84.493469][ T5094] ? exc_invalid_op+0x1a/0x50 [ 84.498183][ T5094] ? asm_exc_invalid_op+0x1a/0x20 [ 84.503294][ T5094] ? __warn_printk+0x292/0x360 [ 84.508102][ T5094] ? skb_checksum_help+0x68f/0x730 [ 84.513372][ T5094] ? skb_checksum_help+0x68e/0x730 [ 84.518701][ T5094] ip_do_fragment+0x20d/0x1b30 [ 84.523584][ T5094] ? __pfx_ip_finish_output2+0x10/0x10 [ 84.529115][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 84.535520][ T5094] ? __pfx_ip_do_fragment+0x10/0x10 [ 84.540821][ T5094] ? kasan_quarantine_put+0xdc/0x230 [ 84.546139][ T5094] ? lockdep_hardirqs_on+0x99/0x150 [ 84.551420][ T5094] ? __ip_finish_output+0x247/0x400 [ 84.556677][ T5094] ? kmem_cache_free+0x145/0x350 [ 84.561703][ T5094] ? ip_fragment+0x9a/0x220 [ 84.566241][ T5094] __ip_finish_output+0x290/0x400 [ 84.571331][ T5094] iptunnel_xmit+0x540/0x9b0 [ 84.576015][ T5094] ip_tunnel_xmit+0x2119/0x2950 [ 84.580993][ T5094] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 84.586230][ T5094] ? gre_build_header+0x341/0xb30 [ 84.591367][ T5094] ? __pfx_gre_build_header+0x10/0x10 [ 84.596804][ T5094] ? iptunnel_handle_offloads+0x25f/0x650 [ 84.602629][ T5094] ipgre_xmit+0x958/0xd40 [ 84.607010][ T5094] ? __pfx_ipgre_xmit+0x10/0x10 [ 84.611934][ T5094] ? validate_xmit_skb+0x9f9/0x1120 [ 84.617197][ T5094] dev_hard_start_xmit+0x27a/0x7e0 [ 84.622399][ T5094] __dev_queue_xmit+0x1b63/0x3e90 [ 84.627508][ T5094] ? __dev_queue_xmit+0x2da/0x3e90 [ 84.633406][ T5094] ? _copy_from_iter+0x26b/0x1960 [ 84.638497][ T5094] ? __pfx___dev_queue_xmit+0x10/0x10 [ 84.643947][ T5094] ? __virt_addr_valid+0x183/0x520 [ 84.649095][ T5094] ? skb_set_owner_w+0x238/0x3e0 [ 84.654104][ T5094] ? skb_partial_csum_set+0x105/0x350 [ 84.659515][ T5094] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 84.665149][ T5094] ? packet_parse_headers+0x7bd/0xad0 [ 84.670614][ T5094] ? packet_xmit+0x68/0x330 [ 84.675212][ T5094] packet_sendmsg+0x4bc0/0x6710 [ 84.680172][ T5094] ? __pfx___might_resched+0x10/0x10 [ 84.685526][ T5094] ? aa_sk_perm+0x967/0xab0 [ 84.690103][ T5094] ? __pfx_packet_sendmsg+0x10/0x10 [ 84.695355][ T5094] ? __pfx_lock_release+0x10/0x10 [ 84.700553][ T5094] ? __import_iovec+0x536/0x820 [ 84.705432][ T5094] ? aa_sock_msg_perm+0x91/0x160 [ 84.710546][ T5094] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 84.715862][ T5094] ? security_socket_sendmsg+0x87/0xb0 [ 84.721425][ T5094] ? __pfx_packet_sendmsg+0x10/0x10 [ 84.726779][ T5094] __sock_sendmsg+0x221/0x270 [ 84.731523][ T5094] ____sys_sendmsg+0x525/0x7d0 [ 84.736333][ T5094] ? __pfx_____sys_sendmsg+0x10/0x10 [ 84.741693][ T5094] ? do_raw_spin_lock+0x14f/0x370 [ 84.746763][ T5094] __sys_sendmsg+0x2b0/0x3a0 [ 84.751433][ T5094] ? __pfx___sys_sendmsg+0x10/0x10 [ 84.756598][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 84.763028][ T5094] ? _raw_spin_unlock_irq+0x2e/0x50 [ 84.768269][ T5094] ? ptrace_notify+0x279/0x380 [ 84.773171][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 84.779609][ T5094] ? exc_page_fault+0x590/0x8c0 [ 84.784507][ T5094] do_syscall_64+0xf3/0x230 [ 84.789017][ T5094] ? clear_bhb_loop+0x35/0x90 [ 84.793776][ T5094] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.799832][ T5094] RIP: 0033:0x7fd6f6aad499 [ 84.804306][ T5094] 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 [ 84.824000][ T5094] RSP: 002b:00007fff399b52b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.832618][ T5094] RAX: ffffffffffffffda RBX: 00007fd6f6afa390 RCX: 00007fd6f6aad499 [ 84.840680][ T5094] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 84.848714][ T5094] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 84.856743][ T5094] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff399b5300 [ 84.864778][ T5094] R13: 00007fff399b52d0 R14: 0000000000000001 R15: 00007fff399b5300 [ 84.872847][ T5094] [ 84.875891][ T5094] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 84.883184][ T5094] CPU: 0 PID: 5094 Comm: syz-executor460 Not tainted 6.10.0-rc5-syzkaller-01137-g1c5fc27bc48a #0 [ 84.893710][ T5094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 84.903772][ T5094] Call Trace: [ 84.907140][ T5094] [ 84.910073][ T5094] dump_stack_lvl+0x241/0x360 [ 84.914761][ T5094] ? __pfx_dump_stack_lvl+0x10/0x10 [ 84.919974][ T5094] ? __pfx__printk+0x10/0x10 [ 84.924700][ T5094] ? vscnprintf+0x5d/0x90 [ 84.929042][ T5094] panic+0x349/0x860 [ 84.932996][ T5094] ? __warn+0x172/0x4e0 [ 84.937336][ T5094] ? __pfx_panic+0x10/0x10 [ 84.941805][ T5094] __warn+0x346/0x4e0 [ 84.945814][ T5094] ? skb_checksum_help+0x68f/0x730 [ 84.951055][ T5094] report_bug+0x2b3/0x500 [ 84.955428][ T5094] ? skb_checksum_help+0x68f/0x730 [ 84.960565][ T5094] handle_bug+0x3e/0x70 [ 84.964735][ T5094] exc_invalid_op+0x1a/0x50 [ 84.969251][ T5094] asm_exc_invalid_op+0x1a/0x20 [ 84.974117][ T5094] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 84.979859][ T5094] 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 7d c5 8c 4c 89 f6 89 da e8 52 48 00 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 84.999471][ T5094] RSP: 0018:ffffc90003ff6d28 EFLAGS: 00010246 [ 85.005586][ T5094] RAX: a57c87a2cf31ab00 RBX: 0000000000000673 RCX: ffff888022adbc00 [ 85.013570][ T5094] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 85.021559][ T5094] RBP: dffffc0000000000 R08: ffffffff81585802 R09: 1ffff1101728519a [ 85.029547][ T5094] R10: dffffc0000000000 R11: ffffed101728519b R12: 1ffff11003c9dad6 [ 85.037624][ T5094] R13: 0000000000009e73 R14: 0000000000009e75 R15: ffff88801e4ed640 [ 85.045627][ T5094] ? __warn_printk+0x292/0x360 [ 85.050419][ T5094] ? skb_checksum_help+0x68e/0x730 [ 85.055642][ T5094] ip_do_fragment+0x20d/0x1b30 [ 85.060426][ T5094] ? __pfx_ip_finish_output2+0x10/0x10 [ 85.065895][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.072255][ T5094] ? __pfx_ip_do_fragment+0x10/0x10 [ 85.077491][ T5094] ? kasan_quarantine_put+0xdc/0x230 [ 85.082797][ T5094] ? lockdep_hardirqs_on+0x99/0x150 [ 85.088051][ T5094] ? __ip_finish_output+0x247/0x400 [ 85.093290][ T5094] ? kmem_cache_free+0x145/0x350 [ 85.098249][ T5094] ? ip_fragment+0x9a/0x220 [ 85.102778][ T5094] __ip_finish_output+0x290/0x400 [ 85.107818][ T5094] iptunnel_xmit+0x540/0x9b0 [ 85.112436][ T5094] ip_tunnel_xmit+0x2119/0x2950 [ 85.117333][ T5094] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 85.122552][ T5094] ? gre_build_header+0x341/0xb30 [ 85.127603][ T5094] ? __pfx_gre_build_header+0x10/0x10 [ 85.132994][ T5094] ? iptunnel_handle_offloads+0x25f/0x650 [ 85.138737][ T5094] ipgre_xmit+0x958/0xd40 [ 85.143181][ T5094] ? __pfx_ipgre_xmit+0x10/0x10 [ 85.148052][ T5094] ? validate_xmit_skb+0x9f9/0x1120 [ 85.153272][ T5094] dev_hard_start_xmit+0x27a/0x7e0 [ 85.158414][ T5094] __dev_queue_xmit+0x1b63/0x3e90 [ 85.163471][ T5094] ? __dev_queue_xmit+0x2da/0x3e90 [ 85.168604][ T5094] ? _copy_from_iter+0x26b/0x1960 [ 85.173661][ T5094] ? __pfx___dev_queue_xmit+0x10/0x10 [ 85.179165][ T5094] ? __virt_addr_valid+0x183/0x520 [ 85.184299][ T5094] ? skb_set_owner_w+0x238/0x3e0 [ 85.189260][ T5094] ? skb_partial_csum_set+0x105/0x350 [ 85.194655][ T5094] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 85.200218][ T5094] ? packet_parse_headers+0x7bd/0xad0 [ 85.205630][ T5094] ? packet_xmit+0x68/0x330 [ 85.210150][ T5094] packet_sendmsg+0x4bc0/0x6710 [ 85.215041][ T5094] ? __pfx___might_resched+0x10/0x10 [ 85.220354][ T5094] ? aa_sk_perm+0x967/0xab0 [ 85.224895][ T5094] ? __pfx_packet_sendmsg+0x10/0x10 [ 85.230114][ T5094] ? __pfx_lock_release+0x10/0x10 [ 85.235150][ T5094] ? __import_iovec+0x536/0x820 [ 85.240009][ T5094] ? aa_sock_msg_perm+0x91/0x160 [ 85.244966][ T5094] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 85.250258][ T5094] ? security_socket_sendmsg+0x87/0xb0 [ 85.255735][ T5094] ? __pfx_packet_sendmsg+0x10/0x10 [ 85.260948][ T5094] __sock_sendmsg+0x221/0x270 [ 85.265638][ T5094] ____sys_sendmsg+0x525/0x7d0 [ 85.270426][ T5094] ? __pfx_____sys_sendmsg+0x10/0x10 [ 85.275734][ T5094] ? do_raw_spin_lock+0x14f/0x370 [ 85.280783][ T5094] __sys_sendmsg+0x2b0/0x3a0 [ 85.285395][ T5094] ? __pfx___sys_sendmsg+0x10/0x10 [ 85.290539][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.296886][ T5094] ? _raw_spin_unlock_irq+0x2e/0x50 [ 85.302094][ T5094] ? ptrace_notify+0x279/0x380 [ 85.306883][ T5094] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.313218][ T5094] ? exc_page_fault+0x590/0x8c0 [ 85.318094][ T5094] do_syscall_64+0xf3/0x230 [ 85.322608][ T5094] ? clear_bhb_loop+0x35/0x90 [ 85.327300][ T5094] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.333209][ T5094] RIP: 0033:0x7fd6f6aad499 [ 85.337807][ T5094] 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 [ 85.357551][ T5094] RSP: 002b:00007fff399b52b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.365989][ T5094] RAX: ffffffffffffffda RBX: 00007fd6f6afa390 RCX: 00007fd6f6aad499 [ 85.373970][ T5094] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 85.381950][ T5094] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 85.389928][ T5094] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff399b5300 [ 85.397908][ T5094] R13: 00007fff399b52d0 R14: 0000000000000001 R15: 00007fff399b5300 [ 85.405915][ T5094] [ 85.409257][ T5094] Kernel Offset: disabled [ 85.413624][ T5094] Rebooting in 86400 seconds..