./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3630111977 <...> Warning: Permanently added '10.128.1.74' (ED25519) to the list of known hosts. execve("./syz-executor3630111977", ["./syz-executor3630111977"], 0x7ffcb7d0b070 /* 10 vars */) = 0 brk(NULL) = 0x5555555ef000 brk(0x5555555efd00) = 0x5555555efd00 arch_prctl(ARCH_SET_FS, 0x5555555ef380) = 0 set_tid_address(0x5555555ef650) = 5069 set_robust_list(0x5555555ef660, 24) = 0 rseq(0x5555555efca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3630111977", 4096) = 28 getrandom("\x17\xb4\xbf\x01\x04\x70\xe9\xa9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555555efd00 brk(0x555555610d00) = 0x555555610d00 brk(0x555555611000) = 0x555555611000 mprotect(0x7f250b762000, 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 5070 attached , child_tidptr=0x5555555ef650) = 5070 [pid 5070] set_robust_list(0x5555555ef660, 24) = 0 [pid 5070] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5070] setsid() = 1 [pid 5070] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5070] unshare(CLONE_NEWNS) = 0 [pid 5070] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5070] unshare(CLONE_NEWIPC) = 0 [pid 5070] unshare(CLONE_NEWCGROUP) = 0 [pid 5070] unshare(CLONE_NEWUTS) = 0 [pid 5070] unshare(CLONE_SYSVSEM) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "16777216", 8) = 8 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "536870912", 9) = 9 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "8192", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5070] close(3) = 0 [pid 5070] getpid() = 1 [pid 5070] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<= skb_headlen() (10613) [ 80.691096][ T5070] WARNING: CPU: 1 PID: 5070 at net/core/dev.c:3294 skb_checksum_help+0x527/0x740 [ 80.700257][ T5070] Modules linked in: [ 80.704136][ T5070] CPU: 1 PID: 5070 Comm: syz-executor363 Not tainted 6.7.0-rc6-syzkaller-00157-g7c5e046bdcb2 #0 [ 80.714655][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 80.724743][ T5070] RIP: 0010:skb_checksum_help+0x527/0x740 [ 80.730497][ T5070] 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 4e e9 8b e8 aa 60 dd f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 eb 1e 17 f9 44 0f b6 25 84 02 93 06 [ 80.750140][ T5070] RSP: 0018:ffffc9000390f098 EFLAGS: 00010286 [ 80.756242][ T5070] RAX: 0000000000000000 RBX: ffff88807a198000 RCX: ffffffff814db519 [ 80.764223][ T5070] RDX: ffff88807f538000 RSI: ffffffff814db526 RDI: 0000000000000001 [ 80.772229][ T5070] RBP: ffff88807a198074 R08: 0000000000000001 R09: 0000000000000000 [ 80.780247][ T5070] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002975 [ 80.788248][ T5070] R13: 0000000000007419 R14: ffff88807a198070 R15: 00000000000074c1 [ 80.796279][ T5070] FS: 00005555555ef380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 80.805220][ T5070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.811835][ T5070] CR2: 000000002000d000 CR3: 0000000078b21000 CR4: 00000000003506f0 [ 80.819835][ T5070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.827833][ T5070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.835850][ T5070] Call Trace: [ 80.839127][ T5070] [ 80.842072][ T5070] ? show_regs+0x8f/0xa0 [ 80.846348][ T5070] ? __warn+0xe6/0x390 [ 80.850432][ T5070] ? skb_checksum_help+0x527/0x740 [ 80.855581][ T5070] ? report_bug+0x3bc/0x580 [ 80.860102][ T5070] ? handle_bug+0x3d/0x70 [ 80.864421][ T5070] ? exc_invalid_op+0x17/0x40 [ 80.869126][ T5070] ? asm_exc_invalid_op+0x1a/0x20 [ 80.874187][ T5070] ? __warn_printk+0x199/0x350 [ 80.879009][ T5070] ? __warn_printk+0x1a6/0x350 [ 80.883793][ T5070] ? skb_checksum_help+0x527/0x740 [ 80.888939][ T5070] ? skb_checksum_help+0x526/0x740 [ 80.894069][ T5070] ip_do_fragment+0xa1b/0x18b0 [ 80.898875][ T5070] ? ip_fragment.constprop.0+0x230/0x230 [ 80.904528][ T5070] ? kasan_quarantine_put+0x102/0x230 [ 80.909938][ T5070] ? ip_skb_dst_mtu+0xc80/0xc80 [ 80.914817][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 80.920750][ T5070] ip_fragment.constprop.0+0x161/0x230 [ 80.926254][ T5070] __ip_finish_output+0x49c/0x650 [ 80.931273][ T5070] ip_finish_output+0x31/0x310 [ 80.936074][ T5070] ip_mc_output+0x1dd/0x6a0 [ 80.940600][ T5070] ? __get_random_u32_below+0x4e/0xa0 [ 80.946011][ T5070] ip_local_out+0xaf/0x1a0 [ 80.950447][ T5070] iptunnel_xmit+0x5b4/0x9b0 [ 80.955037][ T5070] ip_tunnel_xmit+0x1dbc/0x33c0 [ 80.959931][ T5070] ? reacquire_held_locks+0x3f0/0x4c0 [ 80.965362][ T5070] ? ip_md_tunnel_xmit+0x2000/0x2000 [ 80.970647][ T5070] ? __gre_xmit+0x4f5/0x990 [ 80.975139][ T5070] ipgre_xmit+0x4a1/0x980 [ 80.979502][ T5070] dev_hard_start_xmit+0x13d/0x6d0 [ 80.984638][ T5070] __dev_queue_xmit+0x7c1/0x3d60 [ 80.989627][ T5070] ? netdev_core_pick_tx+0x3a0/0x3a0 [ 80.994941][ T5070] ? __pskb_pull_tail+0xd24/0x1830 [ 81.000096][ T5070] ? skb_partial_csum_set+0x202/0x390 [ 81.005529][ T5070] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 81.012121][ T5070] ? packet_create+0x8e0/0x8e0 [ 81.016919][ T5070] packet_xmit+0x257/0x380 [ 81.021350][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.027281][ T5070] packet_sendmsg+0x24c6/0x5220 [ 81.032158][ T5070] ? preempt_count_sub+0x160/0x160 [ 81.037316][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.043228][ T5070] ? aa_sk_perm+0x2f8/0xb40 [ 81.047768][ T5070] ? packet_notifier+0x8c0/0x8c0 [ 81.052721][ T5070] ? aa_af_perm+0x250/0x250 [ 81.057253][ T5070] ? import_ubuf+0x1a4/0x200 [ 81.061866][ T5070] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.067194][ T5070] ? packet_notifier+0x8c0/0x8c0 [ 81.072150][ T5070] __sock_sendmsg+0xd5/0x180 [ 81.076780][ T5070] ____sys_sendmsg+0x6ac/0x940 [ 81.081560][ T5070] ? copy_msghdr_from_user+0x10b/0x160 [ 81.087054][ T5070] ? kernel_sendmsg+0x50/0x50 [ 81.091744][ T5070] ? hlock_class+0x4e/0x130 [ 81.096299][ T5070] ___sys_sendmsg+0x135/0x1d0 [ 81.100999][ T5070] ? do_recvmmsg+0x740/0x740 [ 81.105655][ T5070] ? recalc_sigpending_tsk+0x187/0x1d0 [ 81.111123][ T5070] ? __fget_light+0x1fc/0x260 [ 81.115838][ T5070] __sys_sendmsg+0x117/0x1e0 [ 81.120448][ T5070] ? __sys_sendmsg_sock+0x30/0x30 [ 81.125524][ T5070] ? ptrace_notify+0xf4/0x130 [ 81.130212][ T5070] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 81.136514][ T5070] do_syscall_64+0x40/0x110 [ 81.141041][ T5070] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 81.146964][ T5070] RIP: 0033:0x7f250b6ea4d9 [ 81.151387][ T5070] 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 [ 81.171024][ T5070] RSP: 002b:00007ffcc542e008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.179468][ T5070] RAX: ffffffffffffffda RBX: 00007f250b737390 RCX: 00007f250b6ea4d9 [ 81.187462][ T5070] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.195527][ T5070] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 81.203485][ T5070] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcc542e050 [ 81.211479][ T5070] R13: 00007ffcc542e020 R14: 0000000000000001 R15: 00007ffcc542e050 [ 81.219514][ T5070] [ 81.222527][ T5070] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 81.229786][ T5070] CPU: 1 PID: 5070 Comm: syz-executor363 Not tainted 6.7.0-rc6-syzkaller-00157-g7c5e046bdcb2 #0 [ 81.240181][ T5070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 81.250217][ T5070] Call Trace: [ 81.253481][ T5070] [ 81.256394][ T5070] dump_stack_lvl+0xd9/0x1b0 [ 81.260980][ T5070] panic+0x6dc/0x790 [ 81.264863][ T5070] ? panic_smp_self_stop+0xa0/0xa0 [ 81.269962][ T5070] ? show_trace_log_lvl+0x363/0x4f0 [ 81.275160][ T5070] ? check_panic_on_warn+0x1f/0xb0 [ 81.280270][ T5070] ? skb_checksum_help+0x527/0x740 [ 81.285376][ T5070] check_panic_on_warn+0xab/0xb0 [ 81.290321][ T5070] __warn+0xf2/0x390 [ 81.294204][ T5070] ? skb_checksum_help+0x527/0x740 [ 81.299305][ T5070] report_bug+0x3bc/0x580 [ 81.303640][ T5070] handle_bug+0x3d/0x70 [ 81.307785][ T5070] exc_invalid_op+0x17/0x40 [ 81.312276][ T5070] asm_exc_invalid_op+0x1a/0x20 [ 81.317110][ T5070] RIP: 0010:skb_checksum_help+0x527/0x740 [ 81.322837][ T5070] 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 4e e9 8b e8 aa 60 dd f8 90 <0f> 0b 90 90 e9 42 ff ff ff e8 eb 1e 17 f9 44 0f b6 25 84 02 93 06 [ 81.342957][ T5070] RSP: 0018:ffffc9000390f098 EFLAGS: 00010286 [ 81.349013][ T5070] RAX: 0000000000000000 RBX: ffff88807a198000 RCX: ffffffff814db519 [ 81.356968][ T5070] RDX: ffff88807f538000 RSI: ffffffff814db526 RDI: 0000000000000001 [ 81.364929][ T5070] RBP: ffff88807a198074 R08: 0000000000000001 R09: 0000000000000000 [ 81.372889][ T5070] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000002975 [ 81.380854][ T5070] R13: 0000000000007419 R14: ffff88807a198070 R15: 00000000000074c1 [ 81.388819][ T5070] ? __warn_printk+0x199/0x350 [ 81.393574][ T5070] ? __warn_printk+0x1a6/0x350 [ 81.398331][ T5070] ? skb_checksum_help+0x526/0x740 [ 81.403433][ T5070] ip_do_fragment+0xa1b/0x18b0 [ 81.408190][ T5070] ? ip_fragment.constprop.0+0x230/0x230 [ 81.413819][ T5070] ? kasan_quarantine_put+0x102/0x230 [ 81.419198][ T5070] ? ip_skb_dst_mtu+0xc80/0xc80 [ 81.424044][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.430021][ T5070] ip_fragment.constprop.0+0x161/0x230 [ 81.435479][ T5070] __ip_finish_output+0x49c/0x650 [ 81.440496][ T5070] ip_finish_output+0x31/0x310 [ 81.445248][ T5070] ip_mc_output+0x1dd/0x6a0 [ 81.449743][ T5070] ? __get_random_u32_below+0x4e/0xa0 [ 81.455106][ T5070] ip_local_out+0xaf/0x1a0 [ 81.459516][ T5070] iptunnel_xmit+0x5b4/0x9b0 [ 81.464104][ T5070] ip_tunnel_xmit+0x1dbc/0x33c0 [ 81.468947][ T5070] ? reacquire_held_locks+0x3f0/0x4c0 [ 81.474314][ T5070] ? ip_md_tunnel_xmit+0x2000/0x2000 [ 81.479595][ T5070] ? __gre_xmit+0x4f5/0x990 [ 81.484094][ T5070] ipgre_xmit+0x4a1/0x980 [ 81.488412][ T5070] dev_hard_start_xmit+0x13d/0x6d0 [ 81.493517][ T5070] __dev_queue_xmit+0x7c1/0x3d60 [ 81.498450][ T5070] ? netdev_core_pick_tx+0x3a0/0x3a0 [ 81.503721][ T5070] ? __pskb_pull_tail+0xd24/0x1830 [ 81.508828][ T5070] ? skb_partial_csum_set+0x202/0x390 [ 81.514187][ T5070] ? virtio_net_hdr_to_skb.constprop.0+0x4e4/0x1380 [ 81.520766][ T5070] ? packet_create+0x8e0/0x8e0 [ 81.525549][ T5070] packet_xmit+0x257/0x380 [ 81.529979][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.535865][ T5070] packet_sendmsg+0x24c6/0x5220 [ 81.540711][ T5070] ? preempt_count_sub+0x160/0x160 [ 81.545808][ T5070] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.551690][ T5070] ? aa_sk_perm+0x2f8/0xb40 [ 81.556183][ T5070] ? packet_notifier+0x8c0/0x8c0 [ 81.561107][ T5070] ? aa_af_perm+0x250/0x250 [ 81.565592][ T5070] ? import_ubuf+0x1a4/0x200 [ 81.570176][ T5070] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.575458][ T5070] ? packet_notifier+0x8c0/0x8c0 [ 81.580405][ T5070] __sock_sendmsg+0xd5/0x180 [ 81.584990][ T5070] ____sys_sendmsg+0x6ac/0x940 [ 81.589919][ T5070] ? copy_msghdr_from_user+0x10b/0x160 [ 81.595370][ T5070] ? kernel_sendmsg+0x50/0x50 [ 81.600033][ T5070] ? hlock_class+0x4e/0x130 [ 81.604534][ T5070] ___sys_sendmsg+0x135/0x1d0 [ 81.609205][ T5070] ? do_recvmmsg+0x740/0x740 [ 81.613810][ T5070] ? recalc_sigpending_tsk+0x187/0x1d0 [ 81.619262][ T5070] ? __fget_light+0x1fc/0x260 [ 81.623934][ T5070] __sys_sendmsg+0x117/0x1e0 [ 81.628524][ T5070] ? __sys_sendmsg_sock+0x30/0x30 [ 81.633556][ T5070] ? ptrace_notify+0xf4/0x130 [ 81.638242][ T5070] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 81.644486][ T5070] do_syscall_64+0x40/0x110 [ 81.648985][ T5070] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 81.654873][ T5070] RIP: 0033:0x7f250b6ea4d9 [ 81.659277][ T5070] 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 [ 81.678901][ T5070] RSP: 002b:00007ffcc542e008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.687300][ T5070] RAX: ffffffffffffffda RBX: 00007f250b737390 RCX: 00007f250b6ea4d9 [ 81.695256][ T5070] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.703210][ T5070] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 81.711169][ T5070] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcc542e050 [ 81.719122][ T5070] R13: 00007ffcc542e020 R14: 0000000000000001 R15: 00007ffcc542e050 [ 81.727092][ T5070] [ 81.730299][ T5070] Kernel Offset: disabled [ 81.734681][ T5070] Rebooting in 86400 seconds..