./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1326653539 <...> Warning: Permanently added '10.128.1.5' (ED25519) to the list of known hosts. execve("./syz-executor1326653539", ["./syz-executor1326653539"], 0x7ffc89f69dc0 /* 10 vars */) = 0 brk(NULL) = 0x555555cb2000 brk(0x555555cb2d00) = 0x555555cb2d00 arch_prctl(ARCH_SET_FS, 0x555555cb2380) = 0 set_tid_address(0x555555cb2650) = 5048 set_robust_list(0x555555cb2660, 24) = 0 rseq(0x555555cb2ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1326653539", 4096) = 28 getrandom("\x1f\x34\x37\xba\x76\x73\x02\x2a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555cb2d00 brk(0x555555cd3d00) = 0x555555cd3d00 brk(0x555555cd4000) = 0x555555cd4000 mprotect(0x7f7c367e4000, 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=0x555555cb2650) = 5050 [pid 5050] set_robust_list(0x555555cb2660, 24) = 0 [ 86.776610][ T1138] cfg80211: failed to load regulatory.db [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) [ 95.556078][ T5050] WARNING: CPU: 1 PID: 5050 at net/core/dev.c:3302 skb_checksum_help+0x6b1/0x740 [ 95.565287][ T5050] Modules linked in: [ 95.569181][ T5050] CPU: 1 PID: 5050 Comm: syz-executor132 Not tainted 6.6.0-syzkaller-05843-g89ed67ef126c #0 [ 95.579295][ T5050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 95.589393][ T5050] RIP: 0010:skb_checksum_help+0x6b1/0x740 [ 95.595172][ 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 [ 95.614828][ T5050] RSP: 0018:ffffc90004316ee8 EFLAGS: 00010246 [ 95.620894][ T5050] RAX: b6b1dbb11e2e1900 RBX: 0000000000000688 RCX: ffff8880249f8000 [ 95.628909][ T5050] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 95.636942][ T5050] RBP: dffffc0000000000 R08: ffffffff815490c2 R09: 1ffff92000862d30 [ 95.645066][ T5050] R10: dffffc0000000000 R11: fffff52000862d31 R12: 0000000000000000 [ 95.653067][ T5050] R13: 00000000000006a8 R14: ffff8880256773c0 R15: 00000000000006aa [ 95.661101][ T5050] FS: 0000555555cb2380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 95.670076][ T5050] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.676702][ T5050] CR2: 0000000020001000 CR3: 0000000075717000 CR4: 00000000003506f0 [ 95.684732][ T5050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.692698][ T5050] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.700717][ T5050] Call Trace: [ 95.704031][ T5050] [ 95.706960][ T5050] ? __warn+0x162/0x4a0 [ 95.711117][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 95.716285][ T5050] ? report_bug+0x2b3/0x500 [ 95.720832][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 95.726008][ T5050] ? handle_bug+0x3d/0x70 [ 95.730366][ T5050] ? exc_invalid_op+0x1a/0x50 [ 95.735098][ T5050] ? asm_exc_invalid_op+0x1a/0x20 [ 95.740158][ T5050] ? __warn_printk+0x292/0x360 [ 95.745001][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 95.750148][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 95.755337][ T5050] ip_do_fragment+0x21a/0x1b00 [ 95.760125][ T5050] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 95.766160][ T5050] ? print_irqtrace_events+0x220/0x220 [ 95.771641][ T5050] ? ip_fragment+0x210/0x210 [ 95.776310][ T5050] ? ip_frag_next+0xb10/0xb10 [ 95.781019][ T5050] ? lockdep_hardirqs_on+0x98/0x140 [ 95.786290][ T5050] ? ip_fragment+0x9a/0x210 [ 95.790815][ T5050] __ip_finish_output+0x2bd/0x4b0 [ 95.795898][ T5050] iptunnel_xmit+0x540/0x9b0 [ 95.800527][ T5050] ip_tunnel_xmit+0x20d8/0x2940 [ 95.805473][ T5050] ? tnl_update_pmtu+0x10b0/0x10b0 [ 95.810613][ T5050] ? validate_xmit_xfrm+0xc1/0x1260 [ 95.815873][ T5050] ? gre_build_header+0x25b/0x990 [ 95.820930][ T5050] ipgre_xmit+0x757/0xa50 [ 95.825334][ T5050] dev_hard_start_xmit+0x241/0x750 [ 95.830486][ T5050] __dev_queue_xmit+0x19d0/0x3a30 [ 95.835581][ T5050] ? __dev_queue_xmit+0x2c4/0x3a30 [ 95.840748][ T5050] ? skb_partial_csum_set+0x105/0x350 [ 95.846181][ T5050] ? netdev_core_pick_tx+0x330/0x330 [ 95.851495][ T5050] ? virtio_net_hdr_to_skb+0x70f/0x1240 [ 95.857107][ T5050] ? packet_extra_vlan_len_allowed+0x210/0x210 [ 95.863328][ T5050] ? packet_xmit+0x68/0x320 [ 95.867904][ T5050] packet_sendmsg+0x47e8/0x6240 [ 95.872797][ T5050] ? smack_socket_sendmsg+0x172/0x530 [ 95.878223][ T5050] ? smack_socket_connect+0x4e0/0x4e0 [ 95.883679][ T5050] ? tomoyo_socket_sendmsg_permission+0x287/0x410 [ 95.890124][ T5050] ? tomoyo_socket_bind_permission+0x340/0x340 [ 95.896414][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 95.901736][ T5050] ? __import_iovec+0x552/0x880 [ 95.906751][ T5050] ? exc_page_fault+0xd9/0x860 [ 95.911554][ T5050] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 95.916923][ T5050] ? security_socket_sendmsg+0x81/0xa0 [ 95.922410][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 95.927749][ T5050] ____sys_sendmsg+0x592/0x890 [ 95.932545][ T5050] ? __sys_sendmsg_sock+0x30/0x30 [ 95.937626][ T5050] ? do_raw_spin_lock+0x14d/0x3a0 [ 95.942693][ T5050] __sys_sendmsg+0x2b0/0x3a0 [ 95.947346][ T5050] ? ____sys_sendmsg+0x890/0x890 [ 95.952315][ T5050] ? print_irqtrace_events+0x220/0x220 [ 95.957856][ T5050] ? _raw_spin_unlock_irq+0x2e/0x50 [ 95.963073][ T5050] ? ptrace_notify+0x278/0x380 [ 95.967911][ T5050] ? syscall_enter_from_user_mode+0x32/0x230 [ 95.973960][ T5050] ? syscall_enter_from_user_mode+0x8c/0x230 [ 95.979938][ T5050] do_syscall_64+0x44/0x110 [ 95.984516][ T5050] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 95.990437][ T5050] RIP: 0033:0x7f7c3676c499 [ 95.994901][ 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 [ 96.014555][ T5050] RSP: 002b:00007ffcc8a5c5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.022967][ T5050] RAX: ffffffffffffffda RBX: 00007f7c367b9390 RCX: 00007f7c3676c499 [ 96.030982][ T5050] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 96.039026][ T5050] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 96.047055][ T5050] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcc8a5c5f0 [ 96.055094][ T5050] R13: 00007ffcc8a5c5c0 R14: 0000000000000001 R15: 00007ffcc8a5c5f0 [ 96.063109][ T5050] [ 96.066196][ T5050] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 96.073484][ T5050] CPU: 1 PID: 5050 Comm: syz-executor132 Not tainted 6.6.0-syzkaller-05843-g89ed67ef126c #0 [ 96.083542][ T5050] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 96.093589][ T5050] Call Trace: [ 96.096861][ T5050] [ 96.099786][ T5050] dump_stack_lvl+0x1e7/0x2d0 [ 96.104487][ T5050] ? nf_tcp_handle_invalid+0x650/0x650 [ 96.109943][ T5050] ? panic+0x770/0x770 [ 96.114015][ T5050] ? vscnprintf+0x5d/0x80 [ 96.118342][ T5050] panic+0x30f/0x770 [ 96.122237][ T5050] ? __warn+0x171/0x4a0 [ 96.126404][ T5050] ? __memcpy_flushcache+0x2b0/0x2b0 [ 96.131702][ T5050] __warn+0x314/0x4a0 [ 96.135683][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 96.140813][ T5050] report_bug+0x2b3/0x500 [ 96.145156][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 96.150277][ T5050] handle_bug+0x3d/0x70 [ 96.154438][ T5050] exc_invalid_op+0x1a/0x50 [ 96.158945][ T5050] asm_exc_invalid_op+0x1a/0x20 [ 96.163801][ T5050] RIP: 0010:skb_checksum_help+0x6b1/0x740 [ 96.169525][ 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 [ 96.189144][ T5050] RSP: 0018:ffffc90004316ee8 EFLAGS: 00010246 [ 96.195234][ T5050] RAX: b6b1dbb11e2e1900 RBX: 0000000000000688 RCX: ffff8880249f8000 [ 96.203215][ T5050] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 96.211205][ T5050] RBP: dffffc0000000000 R08: ffffffff815490c2 R09: 1ffff92000862d30 [ 96.219177][ T5050] R10: dffffc0000000000 R11: fffff52000862d31 R12: 0000000000000000 [ 96.227152][ T5050] R13: 00000000000006a8 R14: ffff8880256773c0 R15: 00000000000006aa [ 96.235135][ T5050] ? __warn_printk+0x292/0x360 [ 96.239931][ T5050] ? skb_checksum_help+0x6b1/0x740 [ 96.245154][ T5050] ip_do_fragment+0x21a/0x1b00 [ 96.249927][ T5050] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 96.255915][ T5050] ? print_irqtrace_events+0x220/0x220 [ 96.261379][ T5050] ? ip_fragment+0x210/0x210 [ 96.265994][ T5050] ? ip_frag_next+0xb10/0xb10 [ 96.270688][ T5050] ? lockdep_hardirqs_on+0x98/0x140 [ 96.275902][ T5050] ? ip_fragment+0x9a/0x210 [ 96.280415][ T5050] __ip_finish_output+0x2bd/0x4b0 [ 96.285450][ T5050] iptunnel_xmit+0x540/0x9b0 [ 96.290064][ T5050] ip_tunnel_xmit+0x20d8/0x2940 [ 96.294956][ T5050] ? tnl_update_pmtu+0x10b0/0x10b0 [ 96.300080][ T5050] ? validate_xmit_xfrm+0xc1/0x1260 [ 96.305306][ T5050] ? gre_build_header+0x25b/0x990 [ 96.310347][ T5050] ipgre_xmit+0x757/0xa50 [ 96.314693][ T5050] dev_hard_start_xmit+0x241/0x750 [ 96.319825][ T5050] __dev_queue_xmit+0x19d0/0x3a30 [ 96.324884][ T5050] ? __dev_queue_xmit+0x2c4/0x3a30 [ 96.330009][ T5050] ? skb_partial_csum_set+0x105/0x350 [ 96.335410][ T5050] ? netdev_core_pick_tx+0x330/0x330 [ 96.340704][ T5050] ? virtio_net_hdr_to_skb+0x70f/0x1240 [ 96.346268][ T5050] ? packet_extra_vlan_len_allowed+0x210/0x210 [ 96.352445][ T5050] ? packet_xmit+0x68/0x320 [ 96.356974][ T5050] packet_sendmsg+0x47e8/0x6240 [ 96.361880][ T5050] ? smack_socket_sendmsg+0x172/0x530 [ 96.367257][ T5050] ? smack_socket_connect+0x4e0/0x4e0 [ 96.372639][ T5050] ? tomoyo_socket_sendmsg_permission+0x287/0x410 [ 96.379066][ T5050] ? tomoyo_socket_bind_permission+0x340/0x340 [ 96.385226][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 96.390519][ T5050] ? __import_iovec+0x552/0x880 [ 96.395378][ T5050] ? exc_page_fault+0xd9/0x860 [ 96.400149][ T5050] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 96.405443][ T5050] ? security_socket_sendmsg+0x81/0xa0 [ 96.410907][ T5050] ? packet_getsockopt+0x1000/0x1000 [ 96.416211][ T5050] ____sys_sendmsg+0x592/0x890 [ 96.421080][ T5050] ? __sys_sendmsg_sock+0x30/0x30 [ 96.426110][ T5050] ? do_raw_spin_lock+0x14d/0x3a0 [ 96.431160][ T5050] __sys_sendmsg+0x2b0/0x3a0 [ 96.435755][ T5050] ? ____sys_sendmsg+0x890/0x890 [ 96.440733][ T5050] ? print_irqtrace_events+0x220/0x220 [ 96.446206][ T5050] ? _raw_spin_unlock_irq+0x2e/0x50 [ 96.451404][ T5050] ? ptrace_notify+0x278/0x380 [ 96.456187][ T5050] ? syscall_enter_from_user_mode+0x32/0x230 [ 96.462173][ T5050] ? syscall_enter_from_user_mode+0x8c/0x230 [ 96.468165][ T5050] do_syscall_64+0x44/0x110 [ 96.472676][ T5050] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 96.478574][ T5050] RIP: 0033:0x7f7c3676c499 [ 96.483015][ 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 [ 96.502707][ T5050] RSP: 002b:00007ffcc8a5c5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.511127][ T5050] RAX: ffffffffffffffda RBX: 00007f7c367b9390 RCX: 00007f7c3676c499 [ 96.519099][ T5050] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 96.527074][ T5050] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 96.535046][ T5050] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcc8a5c5f0 [ 96.543014][ T5050] R13: 00007ffcc8a5c5c0 R14: 0000000000000001 R15: 00007ffcc8a5c5f0 [ 96.551000][ T5050] [ 96.554313][ T5050] Kernel Offset: disabled [ 96.558717][ T5050] Rebooting in 86400 seconds..