./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3830195827 <...> Warning: Permanently added '10.128.0.127' (ED25519) to the list of known hosts. execve("./syz-executor3830195827", ["./syz-executor3830195827"], 0x7fff03b0f020 /* 10 vars */) = 0 brk(NULL) = 0x5555567fa000 brk(0x5555567fad00) = 0x5555567fad00 arch_prctl(ARCH_SET_FS, 0x5555567fa380) = 0 set_tid_address(0x5555567fa650) = 5056 set_robust_list(0x5555567fa660, 24) = 0 rseq(0x5555567faca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3830195827", 4096) = 28 getrandom("\xbf\x2d\xa3\x0f\x64\x81\xff\xcf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555567fad00 brk(0x55555681bd00) = 0x55555681bd00 brk(0x55555681c000) = 0x55555681c000 mprotect(0x7fe4d503a000, 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 5057 attached , child_tidptr=0x5555567fa650) = 5057 [pid 5057] set_robust_list(0x5555567fa660, 24) = 0 [pid 5057] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5057] setsid() = 1 [pid 5057] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5057] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5057] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5057] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5057] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5057] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5057] unshare(CLONE_NEWNS) = 0 [pid 5057] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5057] unshare(CLONE_NEWIPC) = 0 [pid 5057] unshare(CLONE_NEWCGROUP) = 0 [pid 5057] unshare(CLONE_NEWUTS) = 0 [pid 5057] unshare(CLONE_SYSVSEM) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "16777216", 8) = 8 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "536870912", 9) = 9 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1024", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "8192", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1024", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1024", 4) = 4 [pid 5057] close(3) = 0 [pid 5057] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5057] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5057] close(3) = 0 [pid 5057] getpid() = 1 [pid 5057] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (116) [ 79.432659][ T5066] WARNING: CPU: 1 PID: 5066 at net/core/dev.c:3302 skb_checksum_help+0x5e2/0x740 [ 79.441830][ T5066] Modules linked in: [ 79.445749][ T5066] CPU: 1 PID: 5066 Comm: syz-executor383 Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0 [ 79.455835][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 79.465913][ T5066] RIP: 0010:skb_checksum_help+0x5e2/0x740 [ 79.471630][ T5066] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 a0 8e ea 8b e8 4f e9 d2 f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 b0 c5 64 f9 e9 4b fa ff ff 48 89 ef [ 79.491264][ T5066] RSP: 0018:ffffc900039e7088 EFLAGS: 00010286 [ 79.497370][ T5066] RAX: 0000000000000000 RBX: ffff88801ce47640 RCX: ffffffff814e18f9 [ 79.505374][ T5066] RDX: ffff88801f40d940 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 79.513351][ T5066] RBP: ffff88801ce476b4 R08: 0000000000000001 R09: 0000000000000000 [ 79.521355][ T5066] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000080 [ 79.529356][ T5066] R13: 0000000000000229 R14: ffff88801ce476b0 R15: 0000000000000227 [ 79.537364][ T5066] FS: 00005555567fa380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 79.546345][ T5066] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.552933][ T5066] CR2: 000000002000d000 CR3: 0000000020c29000 CR4: 00000000003506f0 [ 79.560933][ T5066] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.568932][ T5066] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.576929][ T5066] Call Trace: [ 79.580212][ T5066] [ 79.583131][ T5066] ? show_regs+0x8f/0xa0 [ 79.587410][ T5066] ? __warn+0xe6/0x390 [ 79.591499][ T5066] ? skb_checksum_help+0x5e2/0x740 [ 79.596654][ T5066] ? report_bug+0x3bc/0x580 [ 79.601172][ T5066] ? handle_bug+0x3d/0x70 [ 79.605538][ T5066] ? exc_invalid_op+0x17/0x40 [ 79.610230][ T5066] ? asm_exc_invalid_op+0x1a/0x20 [ 79.615303][ T5066] ? __warn_printk+0x199/0x350 [ 79.620084][ T5066] ? __warn_printk+0x1a6/0x350 [ 79.624879][ T5066] ? skb_checksum_help+0x5e2/0x740 [ 79.630013][ T5066] ? skb_checksum_help+0x5e1/0x740 [ 79.635167][ T5066] ip_do_fragment+0xa15/0x18a0 [ 79.639946][ T5066] ? ip_fragment.constprop.0+0x230/0x230 [ 79.645626][ T5066] ? ip_skb_dst_mtu+0xc60/0xc60 [ 79.650490][ T5066] ? kfree_skbmem+0xef/0x1b0 [ 79.655110][ T5066] ? __kasan_slab_free+0x12c/0x1b0 [ 79.660233][ T5066] ? kmem_cache_free+0x129/0x350 [ 79.665226][ T5066] ? skb_release_data+0x5bf/0x870 [ 79.670265][ T5066] ? kfree_skbmem+0xef/0x1b0 [ 79.674901][ T5066] ip_fragment.constprop.0+0x161/0x230 [ 79.680377][ T5066] __ip_finish_output+0x49c/0x650 [ 79.685442][ T5066] ip_finish_output+0x31/0x310 [ 79.690218][ T5066] ip_mc_output+0x1dd/0x6a0 [ 79.694770][ T5066] ? __get_random_u32_below+0x4e/0xa0 [ 79.700154][ T5066] ip_local_out+0xaf/0x1a0 [ 79.704605][ T5066] iptunnel_xmit+0x5b4/0x9b0 [ 79.709216][ T5066] ip_tunnel_xmit+0x1daa/0x33b0 [ 79.714131][ T5066] ? reacquire_held_locks+0x410/0x4c0 [ 79.719517][ T5066] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 79.724848][ T5066] ? __gre_xmit+0x4f5/0x990 [ 79.729373][ T5066] ipgre_xmit+0x49b/0x980 [ 79.733743][ T5066] dev_hard_start_xmit+0x137/0x6d0 [ 79.738877][ T5066] __dev_queue_xmit+0x7b6/0x3ed0 [ 79.743877][ T5066] ? _copy_from_iter+0x2c1/0x10f0 [ 79.748917][ T5066] ? netdev_core_pick_tx+0x370/0x370 [ 79.754268][ T5066] ? skb_partial_csum_set+0x202/0x390 [ 79.759668][ T5066] ? virtio_net_hdr_to_skb.constprop.0+0x4ed/0x1300 [ 79.766298][ T5066] ? packet_create+0x8e0/0x8e0 [ 79.771073][ T5066] packet_xmit+0x237/0x350 [ 79.775519][ T5066] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 79.781429][ T5066] packet_sendmsg+0x24a6/0x51e0 [ 79.786348][ T5066] ? preempt_count_sub+0x160/0x160 [ 79.791473][ T5066] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 79.797408][ T5066] ? aa_sk_perm+0x2f8/0xb40 [ 79.801928][ T5066] ? packet_notifier+0x8c0/0x8c0 [ 79.806892][ T5066] ? aa_af_perm+0x250/0x250 [ 79.811413][ T5066] ? import_ubuf+0x1a4/0x200 [ 79.816042][ T5066] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 79.821346][ T5066] ? packet_notifier+0x8c0/0x8c0 [ 79.826320][ T5066] __sock_sendmsg+0xd5/0x180 [ 79.830931][ T5066] ____sys_sendmsg+0x6ac/0x940 [ 79.835734][ T5066] ? copy_msghdr_from_user+0x10b/0x160 [ 79.841206][ T5066] ? kernel_sendmsg+0x50/0x50 [ 79.845938][ T5066] ___sys_sendmsg+0x135/0x1d0 [ 79.850628][ T5066] ? do_recvmmsg+0x740/0x740 [ 79.855284][ T5066] ? lock_sync+0x190/0x190 [ 79.859709][ T5066] ? ptrace_stop.part.0+0x457/0x950 [ 79.864949][ T5066] ? __fget_light+0x173/0x200 [ 79.869645][ T5066] __sys_sendmsg+0x117/0x1e0 [ 79.874288][ T5066] ? __sys_sendmsg_sock+0x30/0x30 [ 79.879322][ T5066] ? ptrace_notify+0xf4/0x130 [ 79.884045][ T5066] ? lockdep_hardirqs_on+0x7d/0x110 [ 79.889251][ T5066] ? _raw_spin_unlock_irq+0x2e/0x50 [ 79.894489][ T5066] ? ptrace_notify+0xf4/0x130 [ 79.899201][ T5066] do_syscall_64+0xd3/0x250 [ 79.903758][ T5066] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 79.909664][ T5066] RIP: 0033:0x7fe4d4fc1c69 [ 79.914108][ T5066] 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 [ 79.933745][ T5066] RSP: 002b:00007ffea8be9e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.942156][ T5066] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe4d4fc1c69 [ 79.950165][ T5066] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 79.958165][ T5066] RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 [ 79.966165][ T5066] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 79.974167][ T5066] R13: 0000000000000001 R14: 00007ffea8be9ee0 R15: 0000000000000003 [ 79.982136][ T5066] [ 79.985185][ T5066] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 79.992462][ T5066] CPU: 1 PID: 5066 Comm: syz-executor383 Not tainted 6.7.0-syzkaller-12824-g9d64bf433c53 #0 [ 80.002511][ T5066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 80.012552][ T5066] Call Trace: [ 80.015818][ T5066] [ 80.018735][ T5066] dump_stack_lvl+0xd9/0x1b0 [ 80.023324][ T5066] panic+0x6dc/0x790 [ 80.027209][ T5066] ? panic_smp_self_stop+0xa0/0xa0 [ 80.032317][ T5066] ? show_trace_log_lvl+0x363/0x4f0 [ 80.037515][ T5066] ? check_panic_on_warn+0x1f/0xb0 [ 80.042621][ T5066] ? skb_checksum_help+0x5e2/0x740 [ 80.047731][ T5066] check_panic_on_warn+0xab/0xb0 [ 80.052663][ T5066] __warn+0xf2/0x390 [ 80.056549][ T5066] ? skb_checksum_help+0x5e2/0x740 [ 80.061652][ T5066] report_bug+0x3bc/0x580 [ 80.065976][ T5066] handle_bug+0x3d/0x70 [ 80.070124][ T5066] exc_invalid_op+0x17/0x40 [ 80.074621][ T5066] asm_exc_invalid_op+0x1a/0x20 [ 80.079462][ T5066] RIP: 0010:skb_checksum_help+0x5e2/0x740 [ 80.085184][ T5066] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 a0 8e ea 8b e8 4f e9 d2 f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 b0 c5 64 f9 e9 4b fa ff ff 48 89 ef [ 80.104778][ T5066] RSP: 0018:ffffc900039e7088 EFLAGS: 00010286 [ 80.110841][ T5066] RAX: 0000000000000000 RBX: ffff88801ce47640 RCX: ffffffff814e18f9 [ 80.118815][ T5066] RDX: ffff88801f40d940 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 80.126772][ T5066] RBP: ffff88801ce476b4 R08: 0000000000000001 R09: 0000000000000000 [ 80.134728][ T5066] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000080 [ 80.142690][ T5066] R13: 0000000000000229 R14: ffff88801ce476b0 R15: 0000000000000227 [ 80.150659][ T5066] ? __warn_printk+0x199/0x350 [ 80.155417][ T5066] ? __warn_printk+0x1a6/0x350 [ 80.160175][ T5066] ? skb_checksum_help+0x5e1/0x740 [ 80.165285][ T5066] ip_do_fragment+0xa15/0x18a0 [ 80.170044][ T5066] ? ip_fragment.constprop.0+0x230/0x230 [ 80.175673][ T5066] ? ip_skb_dst_mtu+0xc60/0xc60 [ 80.180514][ T5066] ? kfree_skbmem+0xef/0x1b0 [ 80.185091][ T5066] ? __kasan_slab_free+0x12c/0x1b0 [ 80.190187][ T5066] ? kmem_cache_free+0x129/0x350 [ 80.195116][ T5066] ? skb_release_data+0x5bf/0x870 [ 80.200125][ T5066] ? kfree_skbmem+0xef/0x1b0 [ 80.204704][ T5066] ip_fragment.constprop.0+0x161/0x230 [ 80.210152][ T5066] __ip_finish_output+0x49c/0x650 [ 80.215168][ T5066] ip_finish_output+0x31/0x310 [ 80.219922][ T5066] ip_mc_output+0x1dd/0x6a0 [ 80.224417][ T5066] ? __get_random_u32_below+0x4e/0xa0 [ 80.229780][ T5066] ip_local_out+0xaf/0x1a0 [ 80.234190][ T5066] iptunnel_xmit+0x5b4/0x9b0 [ 80.238777][ T5066] ip_tunnel_xmit+0x1daa/0x33b0 [ 80.243650][ T5066] ? reacquire_held_locks+0x410/0x4c0 [ 80.249031][ T5066] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 80.254320][ T5066] ? __gre_xmit+0x4f5/0x990 [ 80.258815][ T5066] ipgre_xmit+0x49b/0x980 [ 80.263142][ T5066] dev_hard_start_xmit+0x137/0x6d0 [ 80.268253][ T5066] __dev_queue_xmit+0x7b6/0x3ed0 [ 80.273193][ T5066] ? _copy_from_iter+0x2c1/0x10f0 [ 80.278217][ T5066] ? netdev_core_pick_tx+0x370/0x370 [ 80.283507][ T5066] ? skb_partial_csum_set+0x202/0x390 [ 80.288875][ T5066] ? virtio_net_hdr_to_skb.constprop.0+0x4ed/0x1300 [ 80.295463][ T5066] ? packet_create+0x8e0/0x8e0 [ 80.300215][ T5066] packet_xmit+0x237/0x350 [ 80.304615][ T5066] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 80.310501][ T5066] packet_sendmsg+0x24a6/0x51e0 [ 80.315349][ T5066] ? preempt_count_sub+0x160/0x160 [ 80.320449][ T5066] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 80.326335][ T5066] ? aa_sk_perm+0x2f8/0xb40 [ 80.330831][ T5066] ? packet_notifier+0x8c0/0x8c0 [ 80.335754][ T5066] ? aa_af_perm+0x250/0x250 [ 80.340248][ T5066] ? import_ubuf+0x1a4/0x200 [ 80.344836][ T5066] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 80.350110][ T5066] ? packet_notifier+0x8c0/0x8c0 [ 80.355036][ T5066] __sock_sendmsg+0xd5/0x180 [ 80.359619][ T5066] ____sys_sendmsg+0x6ac/0x940 [ 80.364378][ T5066] ? copy_msghdr_from_user+0x10b/0x160 [ 80.369821][ T5066] ? kernel_sendmsg+0x50/0x50 [ 80.374498][ T5066] ___sys_sendmsg+0x135/0x1d0 [ 80.379169][ T5066] ? do_recvmmsg+0x740/0x740 [ 80.383757][ T5066] ? lock_sync+0x190/0x190 [ 80.388158][ T5066] ? ptrace_stop.part.0+0x457/0x950 [ 80.393352][ T5066] ? __fget_light+0x173/0x200 [ 80.398023][ T5066] __sys_sendmsg+0x117/0x1e0 [ 80.402602][ T5066] ? __sys_sendmsg_sock+0x30/0x30 [ 80.407611][ T5066] ? ptrace_notify+0xf4/0x130 [ 80.412287][ T5066] ? lockdep_hardirqs_on+0x7d/0x110 [ 80.417472][ T5066] ? _raw_spin_unlock_irq+0x2e/0x50 [ 80.422659][ T5066] ? ptrace_notify+0xf4/0x130 [ 80.427328][ T5066] do_syscall_64+0xd3/0x250 [ 80.431823][ T5066] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 80.437705][ T5066] RIP: 0033:0x7fe4d4fc1c69 [ 80.442103][ T5066] 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 [ 80.461695][ T5066] RSP: 002b:00007ffea8be9e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.470096][ T5066] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe4d4fc1c69 [ 80.478051][ T5066] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 80.486007][ T5066] RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 [ 80.493976][ T5066] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 80.501963][ T5066] R13: 0000000000000001 R14: 00007ffea8be9ee0 R15: 0000000000000003 [ 80.509947][ T5066] [ 80.513129][ T5066] Kernel Offset: disabled [ 80.517525][ T5066] Rebooting in 86400 seconds..