./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1494419484 <...> Warning: Permanently added '10.128.1.141' (ECDSA) to the list of known hosts. execve("./syz-executor1494419484", ["./syz-executor1494419484"], 0x7ffc502c6ad0 /* 10 vars */) = 0 brk(NULL) = 0x5555555c5000 brk(0x5555555c5c40) = 0x5555555c5c40 arch_prctl(ARCH_SET_FS, 0x5555555c5300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1494419484", 4096) = 28 brk(0x5555555e6c40) = 0x5555555e6c40 brk(0x5555555e7000) = 0x5555555e7000 mprotect(0x7f7566c0f000, 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 5004 attached , child_tidptr=0x5555555c55d0) = 5004 [pid 5004] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5004] setsid() = 1 [pid 5004] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5004] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5004] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5004] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5004] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5004] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5004] unshare(CLONE_NEWNS) = 0 [pid 5004] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5004] unshare(CLONE_NEWIPC) = 0 [pid 5004] unshare(CLONE_NEWCGROUP) = 0 [pid 5004] unshare(CLONE_NEWUTS) = 0 [pid 5004] unshare(CLONE_SYSVSEM) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "16777216", 8) = 8 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "536870912", 9) = 9 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "1024", 4) = 4 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "8192", 4) = 4 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "1024", 4) = 4 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "1024", 4) = 4 [pid 5004] close(3) = 0 [pid 5004] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5004] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5004] close(3) = 0 [pid 5004] getpid() = 1 [pid 5004] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 1d 7a 1b 57 06 31 ff 89 de e8 0b 8c 76 f9 84 db 75 dd [ 59.627868][ T5004] RSP: 0018:ffffc90003a2f120 EFLAGS: 00010293 [ 59.633992][ T5004] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 59.642002][ T5004] RDX: ffff888027320000 RSI: ffffffff880db613 RDI: 0000000000000006 [ 59.650045][ T5004] RBP: ffff88807c5c4dc0 R08: 0000000000000006 R09: 00000000000006aa [ 59.658025][ T5004] R10: 0000000000000688 R11: ffffffff81d6eaa5 R12: ffff88807c5c4e34 [ 59.666064][ T5004] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 59.674139][ T5004] FS: 00005555555c5300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 59.683231][ T5004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.689874][ T5004] CR2: 0000000020001000 CR3: 0000000072ff1000 CR4: 00000000003506f0 [ 59.697851][ T5004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.705861][ T5004] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.713899][ T5004] Call Trace: [ 59.717174][ T5004] [ 59.720152][ T5004] ? __warn+0xe6/0x390 [ 59.724250][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 59.729513][ T5004] ? report_bug+0x2da/0x500 [ 59.734047][ T5004] ? handle_bug+0x3c/0x70 [ 59.738368][ T5004] ? exc_invalid_op+0x18/0x50 [ 59.743208][ T5004] ? asm_exc_invalid_op+0x1a/0x20 [ 59.748259][ T5004] ? kasan_set_track+0x25/0x30 [ 59.753091][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 59.758224][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 59.763398][ T5004] ip_do_fragment+0x99f/0x17d0 [ 59.768182][ T5004] ? ip_fragment.constprop.0+0x240/0x240 [ 59.773858][ T5004] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 59.779744][ T5004] ? kasan_quarantine_put+0xf9/0x220 [ 59.785056][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.790329][ T5004] ? ip_frag_next+0xa50/0xa50 [ 59.795027][ T5004] ? slab_free_freelist_hook+0x8b/0x1c0 [ 59.800644][ T5004] ? kfree_skbmem+0xef/0x1b0 [ 59.805256][ T5004] ? kmem_cache_free+0xe9/0x480 [ 59.810200][ T5004] ip_fragment.constprop.0+0x16b/0x240 [ 59.815687][ T5004] __ip_finish_output+0x4a0/0x650 [ 59.820770][ T5004] ip_finish_output+0x31/0x280 [ 59.825549][ T5004] ip_output+0x1a3/0x320 [ 59.829837][ T5004] ip_local_out+0xb3/0x1a0 [ 59.834274][ T5004] iptunnel_xmit+0x622/0xa40 [ 59.838874][ T5004] ip_tunnel_xmit+0xfc0/0x3170 [ 59.843710][ T5004] ? btf_id_cmp_func+0x88/0x90 [ 59.848508][ T5004] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 59.853856][ T5004] ? __gre_xmit+0x4f4/0x980 [ 59.858393][ T5004] ipgre_xmit+0x6d3/0x8f0 [ 59.862793][ T5004] dev_hard_start_xmit+0x187/0x700 [ 59.867933][ T5004] __dev_queue_xmit+0x2be2/0x3b10 [ 59.873046][ T5004] ? netdev_core_pick_tx+0x390/0x390 [ 59.878360][ T5004] ? hash_and_copy_to_iter+0x1a0/0x210 [ 59.883921][ T5004] ? hash_and_copy_to_iter+0x210/0x210 [ 59.889405][ T5004] ? skb_partial_csum_set+0x203/0x390 [ 59.894845][ T5004] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 59.901504][ T5004] ? packet_rcv_spkt+0x620/0x620 [ 59.906444][ T5004] packet_xmit+0x260/0x390 [ 59.910902][ T5004] packet_sendmsg+0x347f/0x5030 [ 59.915788][ T5004] ? aa_sk_perm+0x31d/0xb10 [ 59.920387][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.926310][ T5004] ? aa_af_perm+0x240/0x240 [ 59.930893][ T5004] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 59.936822][ T5004] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.942185][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.948110][ T5004] sock_sendmsg+0xde/0x190 [ 59.952590][ T5004] ____sys_sendmsg+0x71c/0x900 [ 59.957367][ T5004] ? copy_msghdr_from_user+0xfc/0x150 [ 59.962796][ T5004] ? kernel_sendmsg+0x50/0x50 [ 59.967494][ T5004] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 59.973530][ T5004] ___sys_sendmsg+0x110/0x1b0 [ 59.978229][ T5004] ? do_recvmmsg+0x6f0/0x6f0 [ 59.982886][ T5004] ? lock_sync+0x190/0x190 [ 59.987405][ T5004] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 59.992653][ T5004] ? do_raw_spin_lock+0x124/0x2b0 [ 59.997700][ T5004] ? spin_bug+0x1c0/0x1c0 [ 60.002097][ T5004] ? _raw_spin_lock_irq+0x45/0x50 [ 60.007151][ T5004] ? __fget_light+0x20a/0x270 [ 60.011891][ T5004] __sys_sendmsg+0xf7/0x1c0 [ 60.016532][ T5004] ? __sys_sendmsg_sock+0x40/0x40 [ 60.021723][ T5004] ? lock_downgrade+0x690/0x690 [ 60.026615][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.031907][ T5004] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.037143][ T5004] ? ptrace_notify+0xfe/0x140 [ 60.041879][ T5004] do_syscall_64+0x39/0xb0 [ 60.046338][ T5004] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.052300][ T5004] RIP: 0033:0x7f7566b9b559 [ 60.056726][ T5004] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 60.076578][ T5004] RSP: 002b:00007ffd3aad3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.085151][ T5004] RAX: ffffffffffffffda RBX: 00007ffd3aad3c88 RCX: 00007f7566b9b559 [ 60.093294][ T5004] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 60.101412][ T5004] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 60.109380][ T5004] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd3aad3c90 [ 60.117501][ T5004] R13: 00007ffd3aad3cb0 R14: 0000000000000000 R15: 0000000000000000 [ 60.125539][ T5004] [ 60.128553][ T5004] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 60.135819][ T5004] CPU: 0 PID: 5004 Comm: syz-executor149 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0 [ 60.146912][ T5004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 60.157039][ T5004] Call Trace: [ 60.160325][ T5004] [ 60.163331][ T5004] dump_stack_lvl+0xd9/0x150 [ 60.167912][ T5004] panic+0x686/0x730 [ 60.171803][ T5004] ? panic_smp_self_stop+0xa0/0xa0 [ 60.176905][ T5004] ? show_trace_log_lvl+0x284/0x390 [ 60.182120][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 60.187233][ T5004] check_panic_on_warn+0xb1/0xc0 [ 60.192168][ T5004] __warn+0xf2/0x390 [ 60.196064][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 60.201170][ T5004] report_bug+0x2da/0x500 [ 60.205499][ T5004] handle_bug+0x3c/0x70 [ 60.209730][ T5004] exc_invalid_op+0x18/0x50 [ 60.214221][ T5004] asm_exc_invalid_op+0x1a/0x20 [ 60.219081][ T5004] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 60.224797][ T5004] Code: 90 76 f9 0f 0b 0f b6 1d a2 1b 57 06 31 ff 89 de e8 32 8c 76 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 3d 90 76 f9 <0f> 0b 0f b6 1d 7a 1b 57 06 31 ff 89 de e8 0b 8c 76 f9 84 db 75 dd [ 60.244418][ T5004] RSP: 0018:ffffc90003a2f120 EFLAGS: 00010293 [ 60.250499][ T5004] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 60.258470][ T5004] RDX: ffff888027320000 RSI: ffffffff880db613 RDI: 0000000000000006 [ 60.266441][ T5004] RBP: ffff88807c5c4dc0 R08: 0000000000000006 R09: 00000000000006aa [ 60.274422][ T5004] R10: 0000000000000688 R11: ffffffff81d6eaa5 R12: ffff88807c5c4e34 [ 60.282657][ T5004] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 60.290635][ T5004] ? kasan_set_track+0x25/0x30 [ 60.295504][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 60.300635][ T5004] ip_do_fragment+0x99f/0x17d0 [ 60.305415][ T5004] ? ip_fragment.constprop.0+0x240/0x240 [ 60.311050][ T5004] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 60.316870][ T5004] ? kasan_quarantine_put+0xf9/0x220 [ 60.322162][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.327376][ T5004] ? ip_frag_next+0xa50/0xa50 [ 60.332499][ T5004] ? slab_free_freelist_hook+0x8b/0x1c0 [ 60.338055][ T5004] ? kfree_skbmem+0xef/0x1b0 [ 60.342651][ T5004] ? kmem_cache_free+0xe9/0x480 [ 60.347519][ T5004] ip_fragment.constprop.0+0x16b/0x240 [ 60.352986][ T5004] __ip_finish_output+0x4a0/0x650 [ 60.358017][ T5004] ip_finish_output+0x31/0x280 [ 60.362786][ T5004] ip_output+0x1a3/0x320 [ 60.367034][ T5004] ip_local_out+0xb3/0x1a0 [ 60.371471][ T5004] iptunnel_xmit+0x622/0xa40 [ 60.376073][ T5004] ip_tunnel_xmit+0xfc0/0x3170 [ 60.380848][ T5004] ? btf_id_cmp_func+0x88/0x90 [ 60.385631][ T5004] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 60.390976][ T5004] ? __gre_xmit+0x4f4/0x980 [ 60.395491][ T5004] ipgre_xmit+0x6d3/0x8f0 [ 60.399839][ T5004] dev_hard_start_xmit+0x187/0x700 [ 60.404963][ T5004] __dev_queue_xmit+0x2be2/0x3b10 [ 60.410014][ T5004] ? netdev_core_pick_tx+0x390/0x390 [ 60.415318][ T5004] ? hash_and_copy_to_iter+0x1a0/0x210 [ 60.420786][ T5004] ? hash_and_copy_to_iter+0x210/0x210 [ 60.426253][ T5004] ? skb_partial_csum_set+0x203/0x390 [ 60.431634][ T5004] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 60.438239][ T5004] ? packet_rcv_spkt+0x620/0x620 [ 60.443189][ T5004] packet_xmit+0x260/0x390 [ 60.447630][ T5004] packet_sendmsg+0x347f/0x5030 [ 60.452511][ T5004] ? aa_sk_perm+0x31d/0xb10 [ 60.457059][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.462962][ T5004] ? aa_af_perm+0x240/0x240 [ 60.467485][ T5004] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 60.473394][ T5004] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 60.478690][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.484595][ T5004] sock_sendmsg+0xde/0x190 [ 60.489017][ T5004] ____sys_sendmsg+0x71c/0x900 [ 60.493787][ T5004] ? copy_msghdr_from_user+0xfc/0x150 [ 60.499166][ T5004] ? kernel_sendmsg+0x50/0x50 [ 60.503853][ T5004] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.509849][ T5004] ___sys_sendmsg+0x110/0x1b0 [ 60.514535][ T5004] ? do_recvmmsg+0x6f0/0x6f0 [ 60.519141][ T5004] ? lock_sync+0x190/0x190 [ 60.523565][ T5004] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 60.528771][ T5004] ? do_raw_spin_lock+0x124/0x2b0 [ 60.533823][ T5004] ? spin_bug+0x1c0/0x1c0 [ 60.538177][ T5004] ? _raw_spin_lock_irq+0x45/0x50 [ 60.543237][ T5004] ? __fget_light+0x20a/0x270 [ 60.547952][ T5004] __sys_sendmsg+0xf7/0x1c0 [ 60.552472][ T5004] ? __sys_sendmsg_sock+0x40/0x40 [ 60.557506][ T5004] ? lock_downgrade+0x690/0x690 [ 60.562383][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.567590][ T5004] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.572801][ T5004] ? ptrace_notify+0xfe/0x140 [ 60.577491][ T5004] do_syscall_64+0x39/0xb0 [ 60.581937][ T5004] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.587860][ T5004] RIP: 0033:0x7f7566b9b559 [ 60.592282][ T5004] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 60.611898][ T5004] RSP: 002b:00007ffd3aad3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.620315][ T5004] RAX: ffffffffffffffda RBX: 00007ffd3aad3c88 RCX: 00007f7566b9b559 [ 60.628289][ T5004] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 60.636261][ T5004] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 60.644235][ T5004] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd3aad3c90 [ 60.652206][ T5004] R13: 00007ffd3aad3cb0 R14: 0000000000000000 R15: 0000000000000000 [ 60.660190][ T5004] [ 60.663505][ T5004] Kernel Offset: disabled [ 60.667909][ T5004] Rebooting in 86400 seconds..