./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4139593208 <...> Warning: Permanently added '10.128.0.147' (ED25519) to the list of known hosts. execve("./syz-executor4139593208", ["./syz-executor4139593208"], 0x7ffc842b9230 /* 10 vars */) = 0 brk(NULL) = 0x555556cf4000 brk(0x555556cf4d00) = 0x555556cf4d00 arch_prctl(ARCH_SET_FS, 0x555556cf4380) = 0 set_tid_address(0x555556cf4650) = 5049 set_robust_list(0x555556cf4660, 24) = 0 rseq(0x555556cf4ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4139593208", 4096) = 28 getrandom("\x14\xe6\x81\xce\x49\xf6\xd8\x95", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556cf4d00 brk(0x555556d15d00) = 0x555556d15d00 brk(0x555556d16000) = 0x555556d16000 mprotect(0x7fbce1919000, 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 5050 attached , child_tidptr=0x555556cf4650) = 5050 [pid 5050] set_robust_list(0x555556cf4660, 24) = 0 [pid 5050] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] setsid() = 1 [pid 5050] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5050] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5050] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5050] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5050] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5050] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5050] unshare(CLONE_NEWNS) = 0 [pid 5050] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5050] unshare(CLONE_NEWIPC) = 0 [pid 5050] unshare(CLONE_NEWCGROUP) = 0 [pid 5050] unshare(CLONE_NEWUTS) = 0 [pid 5050] unshare(CLONE_SYSVSEM) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "16777216", 8) = 8 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "536870912", 9) = 9 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1024", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "8192", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1024", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1024", 4) = 4 [pid 5050] close(3) = 0 [pid 5050] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5050] close(3) = 0 [pid 5050] getpid() = 1 [pid 5050] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (1672) [ 69.356288][ T5050] WARNING: CPU: 0 PID: 5050 at net/core/dev.c:3302 skb_checksum_help+0x6b1/0x740 [ 69.365461][ T5050] Modules linked in: [ 69.369340][ T5050] CPU: 0 PID: 5050 Comm: syz-executor413 Not tainted 6.6.0-syzkaller-05843-g89ed67ef126c #0 [ 69.379510][ T5050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 69.389590][ T5050] RIP: 0010:skb_checksum_help+0x6b1/0x740 [ 69.395348][ T5050] Code: ff df 48 8b 4c 24 18 0f b6 04 01 84 c0 0f 85 83 00 00 00 48 8b 04 24 2b 18 48 c7 c7 e0 4f 3b 8c 4c 89 fe 89 da e8 8f 60 60 f8 <0f> 0b bb ea ff ff ff e9 d1 fc ff ff 44 89 e9 80 e1 07 80 c1 03 38 [ 69.414987][ T5050] RSP: 0018:ffffc90003d1eee8 EFLAGS: 00010246 [ 69.421044][ T5050] RAX: 3e3f6d924ae57c00 RBX: 0000000000000688 RCX: ffff8880241cbb80 [ 69.429054][ T5050] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 69.437052][ T5050] RBP: dffffc0000000000 R08: ffffffff815490c2 R09: 1ffff920007a3d30 [ 69.445051][ T5050] R10: dffffc0000000000 R11: fffff520007a3d31 R12: 0000000000000000 [ 69.453025][ T5050] R13: 00000000000006a8 R14: ffff88807861cc80 R15: 00000000000006aa [ 69.461027][ T5050] FS: 0000555556cf4380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 69.469984][ T5050] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.476592][ T5050] CR2: 0000000020001000 CR3: 0000000075b92000 CR4: 00000000003506f0 [ 69.484678][ T5050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.492633][ T5050] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.500636][ T5050] Call Trace: [ 69.503959][ T5050] [ 69.506890][ T5050] ? __warn+0x162/0x4a0 [ 69.511033][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.516178][ T5050] ? report_bug+0x2b3/0x500 [ 69.520702][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.525849][ T5050] ? handle_bug+0x3d/0x70 [ 69.530185][ T5050] ? exc_invalid_op+0x1a/0x50 [ 69.534914][ T5050] ? asm_exc_invalid_op+0x1a/0x20 [ 69.539953][ T5050] ? __warn_printk+0x292/0x360 [ 69.544749][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.549875][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.555025][ T5050] ip_do_fragment+0x21a/0x1b00 [ 69.559798][ T5050] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 69.565811][ T5050] ? print_irqtrace_events+0x220/0x220 [ 69.571281][ T5050] ? ip_fragment+0x210/0x210 [ 69.575921][ T5050] ? ip_frag_next+0xb10/0xb10 [ 69.580607][ T5050] ? lockdep_hardirqs_on+0x98/0x140 [ 69.585848][ T5050] ? ip_fragment+0x9a/0x210 [ 69.590361][ T5050] __ip_finish_output+0x2bd/0x4b0 [ 69.595422][ T5050] iptunnel_xmit+0x540/0x9b0 [ 69.600027][ T5050] ip_tunnel_xmit+0x20d8/0x2940 [ 69.604941][ T5050] ? tnl_update_pmtu+0x10b0/0x10b0 [ 69.610065][ T5050] ? validate_xmit_xfrm+0xc1/0x1260 [ 69.615304][ T5050] ? gre_build_header+0x25b/0x990 [ 69.620344][ T5050] ipgre_xmit+0x757/0xa50 [ 69.624725][ T5050] dev_hard_start_xmit+0x241/0x750 [ 69.629857][ T5050] __dev_queue_xmit+0x19d0/0x3a30 [ 69.634932][ T5050] ? __dev_queue_xmit+0x2c4/0x3a30 [ 69.640059][ T5050] ? skb_partial_csum_set+0x105/0x350 [ 69.645462][ T5050] ? netdev_core_pick_tx+0x330/0x330 [ 69.650759][ T5050] ? virtio_net_hdr_to_skb+0x70f/0x1240 [ 69.656355][ T5050] ? packet_extra_vlan_len_allowed+0x210/0x210 [ 69.662519][ T5050] ? packet_xmit+0x68/0x320 [ 69.667058][ T5050] packet_sendmsg+0x47e8/0x6240 [ 69.671931][ T5050] ? smack_socket_sendmsg+0x172/0x530 [ 69.677334][ T5050] ? smack_socket_connect+0x4e0/0x4e0 [ 69.682710][ T5050] ? tomoyo_socket_sendmsg_permission+0x287/0x410 [ 69.689158][ T5050] ? tomoyo_socket_bind_permission+0x340/0x340 [ 69.695338][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 69.700613][ T5050] ? __import_iovec+0x552/0x880 [ 69.705491][ T5050] ? exc_page_fault+0xd9/0x860 [ 69.710264][ T5050] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 69.715579][ T5050] ? security_socket_sendmsg+0x81/0xa0 [ 69.721052][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 69.726368][ T5050] ____sys_sendmsg+0x592/0x890 [ 69.731145][ T5050] ? __sys_sendmsg_sock+0x30/0x30 [ 69.736211][ T5050] ? do_raw_spin_lock+0x14d/0x3a0 [ 69.741251][ T5050] __sys_sendmsg+0x2b0/0x3a0 [ 69.745874][ T5050] ? ____sys_sendmsg+0x890/0x890 [ 69.750822][ T5050] ? print_irqtrace_events+0x220/0x220 [ 69.756324][ T5050] ? _raw_spin_unlock_irq+0x2e/0x50 [ 69.761526][ T5050] ? ptrace_notify+0x278/0x380 [ 69.766336][ T5050] ? syscall_enter_from_user_mode+0x32/0x230 [ 69.772327][ T5050] ? syscall_enter_from_user_mode+0x8c/0x230 [ 69.778339][ T5050] do_syscall_64+0x44/0x110 [ 69.782850][ T5050] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 69.788772][ T5050] RIP: 0033:0x7fbce18a1499 [ 69.793233][ T5050] 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 [ 69.812878][ T5050] RSP: 002b:00007ffd012718d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.821325][ T5050] RAX: ffffffffffffffda RBX: 00007fbce18ee390 RCX: 00007fbce18a1499 [ 69.829326][ T5050] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 69.837319][ T5050] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 69.845319][ T5050] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd01271920 [ 69.853315][ T5050] R13: 00007ffd012718f0 R14: 0000000000000001 R15: 00007ffd01271920 [ 69.861281][ T5050] [ 69.864328][ T5050] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 69.871601][ T5050] CPU: 0 PID: 5050 Comm: syz-executor413 Not tainted 6.6.0-syzkaller-05843-g89ed67ef126c #0 [ 69.881645][ T5050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 69.891682][ T5050] Call Trace: [ 69.894948][ T5050] [ 69.897864][ T5050] dump_stack_lvl+0x1e7/0x2d0 [ 69.902529][ T5050] ? nf_tcp_handle_invalid+0x650/0x650 [ 69.907970][ T5050] ? panic+0x770/0x770 [ 69.912023][ T5050] ? vscnprintf+0x5d/0x80 [ 69.916337][ T5050] panic+0x30f/0x770 [ 69.920213][ T5050] ? __warn+0x171/0x4a0 [ 69.924353][ T5050] ? __memcpy_flushcache+0x2b0/0x2b0 [ 69.929626][ T5050] __warn+0x314/0x4a0 [ 69.933589][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.938683][ T5050] report_bug+0x2b3/0x500 [ 69.943091][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 69.948191][ T5050] handle_bug+0x3d/0x70 [ 69.952329][ T5050] exc_invalid_op+0x1a/0x50 [ 69.956815][ T5050] asm_exc_invalid_op+0x1a/0x20 [ 69.961649][ T5050] RIP: 0010:skb_checksum_help+0x6b1/0x740 [ 69.967354][ T5050] Code: ff df 48 8b 4c 24 18 0f b6 04 01 84 c0 0f 85 83 00 00 00 48 8b 04 24 2b 18 48 c7 c7 e0 4f 3b 8c 4c 89 fe 89 da e8 8f 60 60 f8 <0f> 0b bb ea ff ff ff e9 d1 fc ff ff 44 89 e9 80 e1 07 80 c1 03 38 [ 69.986951][ T5050] RSP: 0018:ffffc90003d1eee8 EFLAGS: 00010246 [ 69.993000][ T5050] RAX: 3e3f6d924ae57c00 RBX: 0000000000000688 RCX: ffff8880241cbb80 [ 70.000955][ T5050] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 70.008908][ T5050] RBP: dffffc0000000000 R08: ffffffff815490c2 R09: 1ffff920007a3d30 [ 70.016862][ T5050] R10: dffffc0000000000 R11: fffff520007a3d31 R12: 0000000000000000 [ 70.024817][ T5050] R13: 00000000000006a8 R14: ffff88807861cc80 R15: 00000000000006aa [ 70.032776][ T5050] ? __warn_printk+0x292/0x360 [ 70.037529][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 70.042627][ T5050] ip_do_fragment+0x21a/0x1b00 [ 70.047376][ T5050] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 70.053339][ T5050] ? print_irqtrace_events+0x220/0x220 [ 70.058777][ T5050] ? ip_fragment+0x210/0x210 [ 70.063350][ T5050] ? ip_frag_next+0xb10/0xb10 [ 70.068009][ T5050] ? lockdep_hardirqs_on+0x98/0x140 [ 70.073210][ T5050] ? ip_fragment+0x9a/0x210 [ 70.077712][ T5050] __ip_finish_output+0x2bd/0x4b0 [ 70.082725][ T5050] iptunnel_xmit+0x540/0x9b0 [ 70.087311][ T5050] ip_tunnel_xmit+0x20d8/0x2940 [ 70.092162][ T5050] ? tnl_update_pmtu+0x10b0/0x10b0 [ 70.097255][ T5050] ? validate_xmit_xfrm+0xc1/0x1260 [ 70.102436][ T5050] ? gre_build_header+0x25b/0x990 [ 70.107445][ T5050] ipgre_xmit+0x757/0xa50 [ 70.111765][ T5050] dev_hard_start_xmit+0x241/0x750 [ 70.116868][ T5050] __dev_queue_xmit+0x19d0/0x3a30 [ 70.121879][ T5050] ? __dev_queue_xmit+0x2c4/0x3a30 [ 70.126981][ T5050] ? skb_partial_csum_set+0x105/0x350 [ 70.132338][ T5050] ? netdev_core_pick_tx+0x330/0x330 [ 70.137610][ T5050] ? virtio_net_hdr_to_skb+0x70f/0x1240 [ 70.143146][ T5050] ? packet_extra_vlan_len_allowed+0x210/0x210 [ 70.149288][ T5050] ? packet_xmit+0x68/0x320 [ 70.153775][ T5050] packet_sendmsg+0x47e8/0x6240 [ 70.158625][ T5050] ? smack_socket_sendmsg+0x172/0x530 [ 70.163982][ T5050] ? smack_socket_connect+0x4e0/0x4e0 [ 70.169333][ T5050] ? tomoyo_socket_sendmsg_permission+0x287/0x410 [ 70.175739][ T5050] ? tomoyo_socket_bind_permission+0x340/0x340 [ 70.181874][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 70.187141][ T5050] ? __import_iovec+0x552/0x880 [ 70.191985][ T5050] ? exc_page_fault+0xd9/0x860 [ 70.196737][ T5050] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 70.202004][ T5050] ? security_socket_sendmsg+0x81/0xa0 [ 70.207443][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 70.212708][ T5050] ____sys_sendmsg+0x592/0x890 [ 70.217460][ T5050] ? __sys_sendmsg_sock+0x30/0x30 [ 70.222472][ T5050] ? do_raw_spin_lock+0x14d/0x3a0 [ 70.227497][ T5050] __sys_sendmsg+0x2b0/0x3a0 [ 70.232081][ T5050] ? ____sys_sendmsg+0x890/0x890 [ 70.237008][ T5050] ? print_irqtrace_events+0x220/0x220 [ 70.242453][ T5050] ? _raw_spin_unlock_irq+0x2e/0x50 [ 70.247631][ T5050] ? ptrace_notify+0x278/0x380 [ 70.252384][ T5050] ? syscall_enter_from_user_mode+0x32/0x230 [ 70.258350][ T5050] ? syscall_enter_from_user_mode+0x8c/0x230 [ 70.264316][ T5050] do_syscall_64+0x44/0x110 [ 70.268807][ T5050] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 70.274704][ T5050] RIP: 0033:0x7fbce18a1499 [ 70.279121][ T5050] 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 [ 70.298710][ T5050] RSP: 002b:00007ffd012718d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.307106][ T5050] RAX: ffffffffffffffda RBX: 00007fbce18ee390 RCX: 00007fbce18a1499 [ 70.315060][ T5050] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 70.323016][ T5050] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 70.330976][ T5050] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd01271920 [ 70.338935][ T5050] R13: 00007ffd012718f0 R14: 0000000000000001 R15: 00007ffd01271920 [ 70.346895][ T5050] [ 70.350080][ T5050] Kernel Offset: disabled [ 70.354455][ T5050] Rebooting in 86400 seconds..