./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3597231791 <...> Warning: Permanently added '10.128.0.222' (ED25519) to the list of known hosts. execve("./syz-executor3597231791", ["./syz-executor3597231791"], 0x7ffe8d49a030 /* 10 vars */) = 0 brk(NULL) = 0x555556259000 brk(0x555556259d00) = 0x555556259d00 arch_prctl(ARCH_SET_FS, 0x555556259380) = 0 set_tid_address(0x555556259650) = 5067 set_robust_list(0x555556259660, 24) = 0 rseq(0x555556259ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3597231791", 4096) = 28 getrandom("\xf7\xb3\x21\xea\xa7\x8e\x1b\xca", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556259d00 brk(0x55555627ad00) = 0x55555627ad00 brk(0x55555627b000) = 0x55555627b000 mprotect(0x7fe2a767c000, 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=0x555556259650) = 5068 ./strace-static-x86_64: Process 5068 attached [pid 5068] set_robust_list(0x555556259660, 24) = 0 [pid 5068] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] setsid() = 1 [pid 5068] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5068] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5068] unshare(CLONE_NEWNS) = 0 [pid 5068] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5068] unshare(CLONE_NEWIPC) = 0 [pid 5068] unshare(CLONE_NEWCGROUP) = 0 [pid 5068] unshare(CLONE_NEWUTS) = 0 [pid 5068] unshare(CLONE_SYSVSEM) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "16777216", 8) = 8 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "536870912", 9) = 9 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "8192", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024", 4) = 4 [pid 5068] close(3) = 0 [pid 5068] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5068] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5068] close(3) = 0 [pid 5068] getpid() = 1 [pid 5068] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (11601) [ 83.116969][ T5079] WARNING: CPU: 1 PID: 5079 at net/core/dev.c:3294 skb_checksum_help+0x527/0x740 [ 83.126183][ T5079] Modules linked in: [ 83.130131][ T5079] CPU: 1 PID: 5079 Comm: syz-executor359 Not tainted 6.7.0-rc1-syzkaller-00173-g99360d9620f0 #0 [ 83.141217][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 83.151315][ T5079] RIP: 0010:skb_checksum_help+0x527/0x740 [ 83.157050][ T5079] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00 02 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 a0 57 e9 8b e8 9a 78 dd f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 0b 59 17 f9 44 0f b6 25 42 2d 93 06 [ 83.176724][ T5079] RSP: 0018:ffffc90003a3f0a8 EFLAGS: 00010282 [ 83.182840][ T5079] RAX: 0000000000000000 RBX: ffff888028d57500 RCX: ffffffff814db209 [ 83.191028][ T5079] RDX: ffff88802adfd940 RSI: ffffffff814db216 RDI: 0000000000000001 [ 83.199070][ T5079] RBP: ffff888028d57574 R08: 0000000000000001 R09: 0000000000000000 [ 83.207053][ T5079] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002d51 [ 83.215070][ T5079] R13: 0000000000002d51 R14: ffff888028d57570 R15: 0000000000002df9 [ 83.223091][ T5079] FS: 0000555556259380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 83.232102][ T5079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.238744][ T5079] CR2: 000000002000d000 CR3: 000000001cc50000 CR4: 00000000003506f0 [ 83.246751][ T5079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.254807][ T5079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.262818][ T5079] Call Trace: [ 83.266087][ T5079] [ 83.269067][ T5079] ? show_regs+0x8f/0xa0 [ 83.273363][ T5079] ? __warn+0xe6/0x390 [ 83.277429][ T5079] ? skb_checksum_help+0x527/0x740 [ 83.282586][ T5079] ? report_bug+0x3bc/0x580 [ 83.287110][ T5079] ? handle_bug+0x3d/0x70 [ 83.291487][ T5079] ? exc_invalid_op+0x17/0x40 [ 83.296205][ T5079] ? asm_exc_invalid_op+0x1a/0x20 [ 83.301300][ T5079] ? __warn_printk+0x199/0x350 [ 83.306168][ T5079] ? __warn_printk+0x1a6/0x350 [ 83.310981][ T5079] ? skb_checksum_help+0x527/0x740 [ 83.316117][ T5079] ? skb_checksum_help+0x526/0x740 [ 83.321320][ T5079] ip_do_fragment+0xa1b/0x18b0 [ 83.326114][ T5079] ? ip_fragment.constprop.0+0x230/0x230 [ 83.331812][ T5079] ? kasan_quarantine_put+0x102/0x230 [ 83.337220][ T5079] ? ip_skb_dst_mtu+0xc80/0xc80 [ 83.342160][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.348852][ T5079] ip_fragment.constprop.0+0x161/0x230 [ 83.354379][ T5079] __ip_finish_output+0x49c/0x650 [ 83.359691][ T5079] ip_finish_output+0x31/0x310 [ 83.364587][ T5079] ip_mc_output+0x1dd/0x6a0 [ 83.369450][ T5079] ? __get_random_u32_below+0x4e/0xa0 [ 83.374954][ T5079] ip_local_out+0xaf/0x1a0 [ 83.379449][ T5079] iptunnel_xmit+0x5b4/0x9b0 [ 83.384069][ T5079] ip_tunnel_xmit+0x1dbc/0x33c0 [ 83.389879][ T5079] ? ip_md_tunnel_xmit+0x2000/0x2000 [ 83.395182][ T5079] ? skb_mac_gso_segment+0x3d1/0x610 [ 83.400608][ T5079] ? __gre_xmit+0x4f5/0x990 [ 83.407398][ T5079] ipgre_xmit+0x63c/0x910 [ 83.411798][ T5079] dev_hard_start_xmit+0x13d/0x6d0 [ 83.416942][ T5079] __dev_queue_xmit+0x7c1/0x3d60 [ 83.421971][ T5079] ? _copy_from_iter+0x2c1/0x10f0 [ 83.427365][ T5079] ? netdev_core_pick_tx+0x3a0/0x3a0 [ 83.432828][ T5079] ? skb_partial_csum_set+0x202/0x390 [ 83.438229][ T5079] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 83.444899][ T5079] ? packet_create+0x8e0/0x8e0 [ 83.450081][ T5079] packet_xmit+0x257/0x380 [ 83.454525][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.460476][ T5079] packet_sendmsg+0x24ca/0x5240 [ 83.465379][ T5079] ? preempt_count_sub+0x160/0x160 [ 83.470653][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.476758][ T5079] ? aa_sk_perm+0x2f8/0xb40 [ 83.481322][ T5079] ? packet_notifier+0x8c0/0x8c0 [ 83.486286][ T5079] ? aa_af_perm+0x250/0x250 [ 83.490842][ T5079] ? import_ubuf+0x1a4/0x200 [ 83.495824][ T5079] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 83.501211][ T5079] ? packet_notifier+0x8c0/0x8c0 [ 83.506198][ T5079] __sock_sendmsg+0xd5/0x180 [ 83.510963][ T5079] ____sys_sendmsg+0x6ac/0x940 [ 83.515757][ T5079] ? copy_msghdr_from_user+0x10b/0x160 [ 83.521280][ T5079] ? kernel_sendmsg+0x50/0x50 [ 83.525979][ T5079] ? hlock_class+0x4e/0x130 [ 83.530549][ T5079] ___sys_sendmsg+0x135/0x1d0 [ 83.535320][ T5079] ? do_recvmmsg+0x740/0x740 [ 83.540004][ T5079] ? recalc_sigpending_tsk+0x187/0x1d0 [ 83.545477][ T5079] ? __fget_light+0x1fc/0x260 [ 83.550239][ T5079] __sys_sendmsg+0x117/0x1e0 [ 83.554852][ T5079] ? __sys_sendmsg_sock+0x30/0x30 [ 83.560465][ T5079] ? ptrace_notify+0xf4/0x130 [ 83.565158][ T5079] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 83.571452][ T5079] do_syscall_64+0x40/0x110 [ 83.575979][ T5079] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 83.582020][ T5079] RIP: 0033:0x7fe2a7603b69 [ 83.586539][ T5079] 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 [ 83.606217][ T5079] RSP: 002b:00007ffd5754ef08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.614703][ T5079] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe2a7603b69 [ 83.623003][ T5079] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 83.631077][ T5079] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 83.639289][ T5079] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd5754ef60 [ 83.647301][ T5079] R13: 0000000000000001 R14: 00007ffd5754ef60 R15: 0000000000000003 [ 83.655361][ T5079] [ 83.658395][ T5079] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 83.665686][ T5079] CPU: 1 PID: 5079 Comm: syz-executor359 Not tainted 6.7.0-rc1-syzkaller-00173-g99360d9620f0 #0 [ 83.676209][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 83.686467][ T5079] Call Trace: [ 83.689751][ T5079] [ 83.692685][ T5079] dump_stack_lvl+0xd9/0x1b0 [ 83.697370][ T5079] panic+0x6dc/0x790 [ 83.701362][ T5079] ? panic_smp_self_stop+0xa0/0xa0 [ 83.706529][ T5079] ? show_trace_log_lvl+0x363/0x4f0 [ 83.711743][ T5079] ? check_panic_on_warn+0x1f/0xb0 [ 83.717310][ T5079] ? skb_checksum_help+0x527/0x740 [ 83.722767][ T5079] check_panic_on_warn+0xab/0xb0 [ 83.727711][ T5079] __warn+0xf2/0x390 [ 83.731627][ T5079] ? skb_checksum_help+0x527/0x740 [ 83.736760][ T5079] report_bug+0x3bc/0x580 [ 83.741094][ T5079] handle_bug+0x3d/0x70 [ 83.745442][ T5079] exc_invalid_op+0x17/0x40 [ 83.750037][ T5079] asm_exc_invalid_op+0x1a/0x20 [ 83.754888][ T5079] RIP: 0010:skb_checksum_help+0x527/0x740 [ 83.760617][ T5079] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 00 02 00 00 44 89 e2 2b 53 74 44 89 ee 48 c7 c7 a0 57 e9 8b e8 9a 78 dd f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 0b 59 17 f9 44 0f b6 25 42 2d 93 06 [ 83.780519][ T5079] RSP: 0018:ffffc90003a3f0a8 EFLAGS: 00010282 [ 83.786685][ T5079] RAX: 0000000000000000 RBX: ffff888028d57500 RCX: ffffffff814db209 [ 83.794754][ T5079] RDX: ffff88802adfd940 RSI: ffffffff814db216 RDI: 0000000000000001 [ 83.803078][ T5079] RBP: ffff888028d57574 R08: 0000000000000001 R09: 0000000000000000 [ 83.811166][ T5079] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002d51 [ 83.819232][ T5079] R13: 0000000000002d51 R14: ffff888028d57570 R15: 0000000000002df9 [ 83.827405][ T5079] ? __warn_printk+0x199/0x350 [ 83.832394][ T5079] ? __warn_printk+0x1a6/0x350 [ 83.837368][ T5079] ? skb_checksum_help+0x526/0x740 [ 83.842521][ T5079] ip_do_fragment+0xa1b/0x18b0 [ 83.847314][ T5079] ? ip_fragment.constprop.0+0x230/0x230 [ 83.852972][ T5079] ? kasan_quarantine_put+0x102/0x230 [ 83.858538][ T5079] ? ip_skb_dst_mtu+0xc80/0xc80 [ 83.863610][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.869537][ T5079] ip_fragment.constprop.0+0x161/0x230 [ 83.875171][ T5079] __ip_finish_output+0x49c/0x650 [ 83.880387][ T5079] ip_finish_output+0x31/0x310 [ 83.885439][ T5079] ip_mc_output+0x1dd/0x6a0 [ 83.890584][ T5079] ? __get_random_u32_below+0x4e/0xa0 [ 83.895995][ T5079] ip_local_out+0xaf/0x1a0 [ 83.900442][ T5079] iptunnel_xmit+0x5b4/0x9b0 [ 83.905065][ T5079] ip_tunnel_xmit+0x1dbc/0x33c0 [ 83.909949][ T5079] ? ip_md_tunnel_xmit+0x2000/0x2000 [ 83.915510][ T5079] ? skb_mac_gso_segment+0x3d1/0x610 [ 83.920818][ T5079] ? __gre_xmit+0x4f5/0x990 [ 83.925690][ T5079] ipgre_xmit+0x63c/0x910 [ 83.930343][ T5079] dev_hard_start_xmit+0x13d/0x6d0 [ 83.935599][ T5079] __dev_queue_xmit+0x7c1/0x3d60 [ 83.940836][ T5079] ? _copy_from_iter+0x2c1/0x10f0 [ 83.946160][ T5079] ? netdev_core_pick_tx+0x3a0/0x3a0 [ 83.951470][ T5079] ? skb_partial_csum_set+0x202/0x390 [ 83.956948][ T5079] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 83.963651][ T5079] ? packet_create+0x8e0/0x8e0 [ 83.968777][ T5079] packet_xmit+0x257/0x380 [ 83.973206][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.980913][ T5079] packet_sendmsg+0x24ca/0x5240 [ 83.987299][ T5079] ? preempt_count_sub+0x160/0x160 [ 83.992445][ T5079] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 83.998364][ T5079] ? aa_sk_perm+0x2f8/0xb40 [ 84.002886][ T5079] ? packet_notifier+0x8c0/0x8c0 [ 84.008041][ T5079] ? aa_af_perm+0x250/0x250 [ 84.012558][ T5079] ? import_ubuf+0x1a4/0x200 [ 84.017170][ T5079] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 84.023169][ T5079] ? packet_notifier+0x8c0/0x8c0 [ 84.028132][ T5079] __sock_sendmsg+0xd5/0x180 [ 84.032739][ T5079] ____sys_sendmsg+0x6ac/0x940 [ 84.037808][ T5079] ? copy_msghdr_from_user+0x10b/0x160 [ 84.043285][ T5079] ? kernel_sendmsg+0x50/0x50 [ 84.047974][ T5079] ? hlock_class+0x4e/0x130 [ 84.055416][ T5079] ___sys_sendmsg+0x135/0x1d0 [ 84.060310][ T5079] ? do_recvmmsg+0x740/0x740 [ 84.065307][ T5079] ? recalc_sigpending_tsk+0x187/0x1d0 [ 84.070781][ T5079] ? __fget_light+0x1fc/0x260 [ 84.075537][ T5079] __sys_sendmsg+0x117/0x1e0 [ 84.080163][ T5079] ? __sys_sendmsg_sock+0x30/0x30 [ 84.085230][ T5079] ? ptrace_notify+0xf4/0x130 [ 84.089920][ T5079] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 84.096179][ T5079] do_syscall_64+0x40/0x110 [ 84.100703][ T5079] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 84.106789][ T5079] RIP: 0033:0x7fe2a7603b69 [ 84.111214][ T5079] 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 [ 84.131872][ T5079] RSP: 002b:00007ffd5754ef08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 84.140655][ T5079] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe2a7603b69 [ 84.149003][ T5079] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 84.157237][ T5079] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 84.165303][ T5079] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd5754ef60 [ 84.173630][ T5079] R13: 0000000000000001 R14: 00007ffd5754ef60 R15: 0000000000000003 [ 84.182152][ T5079] [ 84.185362][ T5079] Kernel Offset: disabled [ 84.189858][ T5079] Rebooting in 86400 seconds..