./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1040430168 <...> Warning: Permanently added '10.128.1.60' (ED25519) to the list of known hosts. execve("./syz-executor1040430168", ["./syz-executor1040430168"], 0x7ffc13e49430 /* 10 vars */) = 0 brk(NULL) = 0x555555b36000 brk(0x555555b36d00) = 0x555555b36d00 arch_prctl(ARCH_SET_FS, 0x555555b36380) = 0 set_tid_address(0x555555b36650) = 5045 set_robust_list(0x555555b36660, 24) = 0 rseq(0x555555b36ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1040430168", 4096) = 28 getrandom("\xed\x81\x88\x9b\x41\x5e\xc7\x67", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555b36d00 brk(0x555555b57d00) = 0x555555b57d00 brk(0x555555b58000) = 0x555555b58000 mprotect(0x7f13f44ca000, 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 5046 attached , child_tidptr=0x555555b36650) = 5046 [pid 5046] set_robust_list(0x555555b36660, 24) = 0 [pid 5046] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5046] setsid() = 1 [pid 5046] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5046] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5046] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5046] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5046] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5046] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5046] unshare(CLONE_NEWNS) = 0 [pid 5046] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5046] unshare(CLONE_NEWIPC) = 0 [pid 5046] unshare(CLONE_NEWCGROUP) = 0 [pid 5046] unshare(CLONE_NEWUTS) = 0 [pid 5046] unshare(CLONE_SYSVSEM) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "16777216", 8) = 8 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "536870912", 9) = 9 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1024", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "8192", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1024", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1024", 4) = 4 [pid 5046] close(3) = 0 [pid 5046] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5046] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5046] close(3) = 0 [pid 5046] getpid() = 1 [pid 5046] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (104) [ 81.893214][ T5056] WARNING: CPU: 0 PID: 5056 at net/core/dev.c:3297 skb_checksum_help+0x525/0x730 [ 81.902437][ T5056] Modules linked in: [ 81.906356][ T5056] CPU: 0 PID: 5056 Comm: syz-executor104 Not tainted 6.6.0-rc5-syzkaller-00227-gf6c7b4224356 #0 [ 81.916851][ T5056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 81.927062][ T5056] RIP: 0010:skb_checksum_help+0x525/0x730 [ 81.932962][ T5056] Code: 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9 01 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 60 1c a3 8b e8 2b a6 1a f9 <0f> 0b e9 46 ff ff ff e8 bf 7d 54 f9 44 0f b6 25 e4 25 85 06 31 ff [ 81.952638][ T5056] RSP: 0018:ffffc90003cef098 EFLAGS: 00010286 [ 81.958789][ T5056] RAX: 0000000000000000 RBX: ffff888013a95a00 RCX: 0000000000000000 [ 81.966787][ T5056] RDX: ffff8880265d9dc0 RSI: ffffffff814df0c6 RDI: 0000000000000001 [ 81.975145][ T5056] RBP: ffff888013a95a74 R08: 0000000000000001 R09: 0000000000000000 [ 81.983176][ T5056] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 81.991292][ T5056] R13: 0000000000000529 R14: ffff888013a95a70 R15: 00000000000005d1 [ 81.999330][ T5056] FS: 0000555555b36380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 82.008504][ T5056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.015126][ T5056] CR2: 000000002000d000 CR3: 000000001ce56000 CR4: 00000000003506f0 [ 82.023173][ T5056] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.031201][ T5056] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.039241][ T5056] Call Trace: [ 82.042539][ T5056] [ 82.045492][ T5056] ? show_regs+0x8f/0xa0 [ 82.049817][ T5056] ? __warn+0xe6/0x380 [ 82.053929][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.059148][ T5056] ? report_bug+0x3bc/0x580 [ 82.063695][ T5056] ? handle_bug+0x3c/0x70 [ 82.068118][ T5056] ? exc_invalid_op+0x17/0x40 [ 82.072836][ T5056] ? asm_exc_invalid_op+0x1a/0x20 [ 82.077918][ T5056] ? __warn_printk+0x1a6/0x350 [ 82.082770][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.087935][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.093147][ T5056] ip_do_fragment+0xa1b/0x18b0 [ 82.097969][ T5056] ? ip_fragment.constprop.0+0x230/0x230 [ 82.103867][ T5056] ? ip_frag_next+0xa40/0xa40 [ 82.108658][ T5056] ip_fragment.constprop.0+0x161/0x230 [ 82.114153][ T5056] __ip_finish_output+0x49a/0x640 [ 82.119252][ T5056] ip_finish_output+0x31/0x310 [ 82.124051][ T5056] ip_mc_output+0x1dd/0x6a0 [ 82.128629][ T5056] ip_local_out+0xaf/0x190 [ 82.133081][ T5056] iptunnel_xmit+0x61a/0x9e0 [ 82.137713][ T5056] ip_tunnel_xmit+0x1e4f/0x3370 [ 82.142671][ T5056] ? ip_md_tunnel_xmit+0x1fc0/0x1fc0 [ 82.148031][ T5056] ? skb_mac_gso_segment+0x3d1/0x610 [ 82.153369][ T5056] ? __gre_xmit+0x4f5/0x990 [ 82.157914][ T5056] ipgre_xmit+0x63c/0x910 [ 82.162340][ T5056] dev_hard_start_xmit+0x13d/0x6c0 [ 82.167502][ T5056] __dev_queue_xmit+0x9b4/0x3d60 [ 82.172545][ T5056] ? netdev_core_pick_tx+0x390/0x390 [ 82.177900][ T5056] ? skb_partial_csum_set+0x202/0x390 [ 82.183422][ T5056] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 82.190104][ T5056] ? packet_release+0xdc0/0xdc0 [ 82.195007][ T5056] packet_xmit+0x257/0x380 [ 82.199826][ T5056] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 82.205777][ T5056] packet_sendmsg+0x24d9/0x5580 [ 82.210753][ T5056] ? preempt_count_sub+0x150/0x150 [ 82.215916][ T5056] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 82.221926][ T5056] ? aa_sk_perm+0x2c1/0xad0 [ 82.226494][ T5056] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 82.232476][ T5056] ? aa_af_perm+0x260/0x260 [ 82.237021][ T5056] ? import_ubuf+0x1f5/0x260 [ 82.241712][ T5056] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 82.247043][ T5056] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 82.253019][ T5056] __sock_sendmsg+0xd5/0x180 [ 82.257664][ T5056] ____sys_sendmsg+0x6ac/0x940 [ 82.262494][ T5056] ? copy_msghdr_from_user+0x10b/0x160 [ 82.268011][ T5056] ? kernel_sendmsg+0x50/0x50 [ 82.272751][ T5056] ___sys_sendmsg+0x135/0x1d0 [ 82.277465][ T5056] ? do_recvmmsg+0x740/0x740 [ 82.282145][ T5056] ? lock_sync+0x190/0x190 [ 82.286603][ T5056] ? ptrace_stop.part.0+0x4af/0x900 [ 82.291923][ T5056] ? __fget_light+0x1fc/0x260 [ 82.296641][ T5056] __sys_sendmsg+0x117/0x1e0 [ 82.301309][ T5056] ? __sys_sendmsg_sock+0x30/0x30 [ 82.306361][ T5056] ? ptrace_notify+0xf4/0x130 [ 82.311134][ T5056] ? lockdep_hardirqs_on+0x7d/0x100 [ 82.316385][ T5056] ? _raw_spin_unlock_irq+0x2e/0x50 [ 82.321660][ T5056] ? ptrace_notify+0xf4/0x130 [ 82.326462][ T5056] do_syscall_64+0x38/0xb0 [ 82.330969][ T5056] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 82.336912][ T5056] RIP: 0033:0x7f13f4451b69 [ 82.341402][ T5056] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 [ 82.361078][ T5056] RSP: 002b:00007fffce999c28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.369571][ T5056] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f13f4451b69 [ 82.377565][ T5056] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 82.385609][ T5056] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 82.393643][ T5056] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffce999c80 [ 82.401692][ T5056] R13: 0000000000000001 R14: 00007fffce999c80 R15: 0000000000000003 [ 82.409783][ T5056] [ 82.412835][ T5056] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 82.420121][ T5056] CPU: 0 PID: 5056 Comm: syz-executor104 Not tainted 6.6.0-rc5-syzkaller-00227-gf6c7b4224356 #0 [ 82.430543][ T5056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 82.440617][ T5056] Call Trace: [ 82.443900][ T5056] [ 82.446835][ T5056] dump_stack_lvl+0xd9/0x1b0 [ 82.451445][ T5056] panic+0x6a6/0x750 [ 82.455360][ T5056] ? panic_smp_self_stop+0xa0/0xa0 [ 82.460505][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.465641][ T5056] check_panic_on_warn+0xab/0xb0 [ 82.470604][ T5056] __warn+0xf2/0x380 [ 82.474521][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.479655][ T5056] report_bug+0x3bc/0x580 [ 82.484002][ T5056] handle_bug+0x3c/0x70 [ 82.488176][ T5056] exc_invalid_op+0x17/0x40 [ 82.492694][ T5056] asm_exc_invalid_op+0x1a/0x20 [ 82.497559][ T5056] RIP: 0010:skb_checksum_help+0x525/0x730 [ 82.503302][ T5056] Code: 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 f9 01 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 60 1c a3 8b e8 2b a6 1a f9 <0f> 0b e9 46 ff ff ff e8 bf 7d 54 f9 44 0f b6 25 e4 25 85 06 31 ff [ 82.522921][ T5056] RSP: 0018:ffffc90003cef098 EFLAGS: 00010286 [ 82.529003][ T5056] RAX: 0000000000000000 RBX: ffff888013a95a00 RCX: 0000000000000000 [ 82.536984][ T5056] RDX: ffff8880265d9dc0 RSI: ffffffff814df0c6 RDI: 0000000000000001 [ 82.544967][ T5056] RBP: ffff888013a95a74 R08: 0000000000000001 R09: 0000000000000000 [ 82.553120][ T5056] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002969 [ 82.561101][ T5056] R13: 0000000000000529 R14: ffff888013a95a70 R15: 00000000000005d1 [ 82.569093][ T5056] ? __warn_printk+0x1a6/0x350 [ 82.573880][ T5056] ? skb_checksum_help+0x525/0x730 [ 82.579026][ T5056] ip_do_fragment+0xa1b/0x18b0 [ 82.583818][ T5056] ? ip_fragment.constprop.0+0x230/0x230 [ 82.589472][ T5056] ? ip_frag_next+0xa40/0xa40 [ 82.594192][ T5056] ip_fragment.constprop.0+0x161/0x230 [ 82.599665][ T5056] __ip_finish_output+0x49a/0x640 [ 82.604820][ T5056] ip_finish_output+0x31/0x310 [ 82.609602][ T5056] ip_mc_output+0x1dd/0x6a0 [ 82.614121][ T5056] ip_local_out+0xaf/0x190 [ 82.618550][ T5056] iptunnel_xmit+0x61a/0x9e0 [ 82.623160][ T5056] ip_tunnel_xmit+0x1e4f/0x3370 [ 82.628046][ T5056] ? ip_md_tunnel_xmit+0x1fc0/0x1fc0 [ 82.633351][ T5056] ? skb_mac_gso_segment+0x3d1/0x610 [ 82.638662][ T5056] ? __gre_xmit+0x4f5/0x990 [ 82.643183][ T5056] ipgre_xmit+0x63c/0x910 [ 82.647530][ T5056] dev_hard_start_xmit+0x13d/0x6c0 [ 82.652669][ T5056] __dev_queue_xmit+0x9b4/0x3d60 [ 82.657641][ T5056] ? netdev_core_pick_tx+0x390/0x390 [ 82.662953][ T5056] ? skb_partial_csum_set+0x202/0x390 [ 82.668363][ T5056] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 82.674995][ T5056] ? packet_release+0xdc0/0xdc0 [ 82.679872][ T5056] packet_xmit+0x257/0x380 [ 82.684310][ T5056] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 82.690229][ T5056] packet_sendmsg+0x24d9/0x5580 [ 82.695110][ T5056] ? preempt_count_sub+0x150/0x150 [ 82.700245][ T5056] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 82.706167][ T5056] ? aa_sk_perm+0x2c1/0xad0 [ 82.710692][ T5056] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 82.716603][ T5056] ? aa_af_perm+0x260/0x260 [ 82.721122][ T5056] ? import_ubuf+0x1f5/0x260 [ 82.725745][ T5056] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 82.731051][ T5056] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 82.736966][ T5056] __sock_sendmsg+0xd5/0x180 [ 82.741582][ T5056] ____sys_sendmsg+0x6ac/0x940 [ 82.746368][ T5056] ? copy_msghdr_from_user+0x10b/0x160 [ 82.751841][ T5056] ? kernel_sendmsg+0x50/0x50 [ 82.756554][ T5056] ___sys_sendmsg+0x135/0x1d0 [ 82.761245][ T5056] ? do_recvmmsg+0x740/0x740 [ 82.765860][ T5056] ? lock_sync+0x190/0x190 [ 82.770296][ T5056] ? ptrace_stop.part.0+0x4af/0x900 [ 82.775520][ T5056] ? __fget_light+0x1fc/0x260 [ 82.780218][ T5056] __sys_sendmsg+0x117/0x1e0 [ 82.784821][ T5056] ? __sys_sendmsg_sock+0x30/0x30 [ 82.789856][ T5056] ? ptrace_notify+0xf4/0x130 [ 82.794555][ T5056] ? lockdep_hardirqs_on+0x7d/0x100 [ 82.799774][ T5056] ? _raw_spin_unlock_irq+0x2e/0x50 [ 82.805007][ T5056] ? ptrace_notify+0xf4/0x130 [ 82.809699][ T5056] do_syscall_64+0x38/0xb0 [ 82.814132][ T5056] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 82.820046][ T5056] RIP: 0033:0x7f13f4451b69 [ 82.824470][ T5056] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 [ 82.844089][ T5056] RSP: 002b:00007fffce999c28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.852544][ T5056] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f13f4451b69 [ 82.860533][ T5056] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 82.868511][ T5056] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 82.876489][ T5056] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffce999c80 [ 82.884479][ T5056] R13: 0000000000000001 R14: 00007fffce999c80 R15: 0000000000000003 [ 82.892481][ T5056] [ 82.895758][ T5056] Kernel Offset: disabled [ 82.900138][ T5056] Rebooting in 86400 seconds..