./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor585770263 <...> Warning: Permanently added '10.128.0.134' (ECDSA) to the list of known hosts. execve("./syz-executor585770263", ["./syz-executor585770263"], 0x7fffb4ceee60 /* 10 vars */) = 0 brk(NULL) = 0x5555571d1000 brk(0x5555571d1c40) = 0x5555571d1c40 arch_prctl(ARCH_SET_FS, 0x5555571d1300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor585770263", 4096) = 27 brk(0x5555571f2c40) = 0x5555571f2c40 brk(0x5555571f3000) = 0x5555571f3000 mprotect(0x7fa2b0708000, 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=0x5555571d15d0) = 5004 ./strace-static-x86_64: Process 5004 attached [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 0f 00 57 06 31 ff 89 de e8 4b 51 76 f9 84 db 75 dd [ 62.824915][ T5004] RSP: 0018:ffffc90003a0f120 EFLAGS: 00010293 [ 62.831043][ T5004] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 62.839071][ T5004] RDX: ffff88801ebf5940 RSI: ffffffff880df0c3 RDI: 0000000000000006 [ 62.847543][ T5004] RBP: ffff88807cbdda00 R08: 0000000000000006 R09: 0000000000000621 [ 62.856990][ T5004] R10: 0000000000000519 R11: 0000000000094001 R12: ffff88807cbdda74 [ 62.865024][ T5004] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 62.873084][ T5004] FS: 00005555571d1300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 62.882084][ T5004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.888720][ T5004] CR2: 0000000020001000 CR3: 000000002bfb4000 CR4: 00000000003506f0 [ 62.896708][ T5004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.904750][ T5004] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.912778][ T5004] Call Trace: [ 62.916047][ T5004] [ 62.919015][ T5004] ? __warn+0xe6/0x390 [ 62.923114][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 62.928283][ T5004] ? report_bug+0x2da/0x500 [ 62.932816][ T5004] ? handle_bug+0x3c/0x70 [ 62.937201][ T5004] ? exc_invalid_op+0x18/0x50 [ 62.941936][ T5004] ? asm_exc_invalid_op+0x1a/0x20 [ 62.947051][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 62.952296][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 62.957479][ T5004] ip_do_fragment+0x99f/0x17d0 [ 62.962279][ T5004] ? ip_fragment.constprop.0+0x240/0x240 [ 62.967977][ T5004] ? ip_frag_next+0xa50/0xa50 [ 62.972685][ T5004] ? slab_free_freelist_hook+0x8b/0x1c0 [ 62.978334][ T5004] ip_fragment.constprop.0+0x16b/0x240 [ 62.983818][ T5004] __ip_finish_output+0x4a0/0x650 [ 62.988927][ T5004] ip_finish_output+0x31/0x280 [ 62.993717][ T5004] ip_output+0x1a3/0x320 [ 62.998030][ T5004] ip_local_out+0xb3/0x1a0 [ 63.002469][ T5004] iptunnel_xmit+0x622/0xa40 [ 63.007142][ T5004] ip_tunnel_xmit+0xfc0/0x3170 [ 63.011930][ T5004] ? skb_eth_gso_segment+0x128/0x290 [ 63.017362][ T5004] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 63.022673][ T5004] ? __gre_xmit+0x4f4/0x980 [ 63.027581][ T5004] ipgre_xmit+0x6d3/0x8f0 [ 63.031930][ T5004] dev_hard_start_xmit+0x187/0x700 [ 63.037105][ T5004] __dev_queue_xmit+0x2be2/0x3b10 [ 63.042153][ T5004] ? netdev_core_pick_tx+0x390/0x390 [ 63.047490][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.052704][ T5004] ? hash_and_copy_to_iter+0x120/0x210 [ 63.058222][ T5004] ? hash_and_copy_to_iter+0x210/0x210 [ 63.063712][ T5004] ? skb_partial_csum_set+0x203/0x390 [ 63.069185][ T5004] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 63.075828][ T5004] ? packet_rcv_spkt+0x620/0x620 [ 63.080863][ T5004] packet_xmit+0x260/0x390 [ 63.085308][ T5004] packet_sendmsg+0x347f/0x5030 [ 63.090326][ T5004] ? aa_sk_perm+0x31d/0xb10 [ 63.094848][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 63.100800][ T5004] ? aa_af_perm+0x240/0x240 [ 63.105324][ T5004] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 63.111448][ T5004] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 63.116756][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 63.122724][ T5004] sock_sendmsg+0xde/0x190 [ 63.127198][ T5004] ____sys_sendmsg+0x733/0x920 [ 63.132003][ T5004] ? copy_msghdr_from_user+0xfc/0x150 [ 63.137462][ T5004] ? kernel_sendmsg+0x50/0x50 [ 63.142175][ T5004] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 63.148249][ T5004] ___sys_sendmsg+0x110/0x1b0 [ 63.152987][ T5004] ? do_recvmmsg+0x6f0/0x6f0 [ 63.157678][ T5004] ? lock_sync+0x190/0x190 [ 63.162118][ T5004] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 63.167369][ T5004] ? do_raw_spin_lock+0x124/0x2b0 [ 63.172422][ T5004] ? spin_bug+0x1c0/0x1c0 [ 63.176755][ T5004] ? _raw_spin_lock_irq+0x45/0x50 [ 63.181846][ T5004] ? __fget_light+0x20a/0x270 [ 63.186563][ T5004] __sys_sendmsg+0xf7/0x1c0 [ 63.191127][ T5004] ? __sys_sendmsg_sock+0x40/0x40 [ 63.196171][ T5004] ? lock_downgrade+0x690/0x690 [ 63.201101][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.206330][ T5004] ? _raw_spin_unlock_irq+0x2e/0x50 [ 63.211599][ T5004] ? ptrace_notify+0xfe/0x140 [ 63.216309][ T5004] do_syscall_64+0x39/0xb0 [ 63.221072][ T5004] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.227223][ T5004] RIP: 0033:0x7fa2b0694559 [ 63.231657][ 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 [ 63.251496][ T5004] RSP: 002b:00007ffd7df84858 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.259990][ T5004] RAX: ffffffffffffffda RBX: 00007ffd7df84868 RCX: 00007fa2b0694559 [ 63.268017][ T5004] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 63.276026][ T5004] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 63.284076][ T5004] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd7df84870 [ 63.292102][ T5004] R13: 00007ffd7df84890 R14: 0000000000000000 R15: 0000000000000000 [ 63.300308][ T5004] [ 63.303515][ T5004] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 63.310795][ T5004] CPU: 0 PID: 5004 Comm: syz-executor585 Not tainted 6.4.0-rc4-syzkaller-00880-gb62d9e200492 #0 [ 63.321199][ T5004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 63.331242][ T5004] Call Trace: [ 63.334515][ T5004] [ 63.337434][ T5004] dump_stack_lvl+0xd9/0x150 [ 63.342020][ T5004] panic+0x686/0x730 [ 63.345923][ T5004] ? panic_smp_self_stop+0xa0/0xa0 [ 63.351030][ T5004] ? show_trace_log_lvl+0x284/0x390 [ 63.356234][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 63.361347][ T5004] check_panic_on_warn+0xb1/0xc0 [ 63.366284][ T5004] __warn+0xf2/0x390 [ 63.370178][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 63.375284][ T5004] report_bug+0x2da/0x500 [ 63.379622][ T5004] handle_bug+0x3c/0x70 [ 63.383764][ T5004] exc_invalid_op+0x18/0x50 [ 63.388254][ T5004] asm_exc_invalid_op+0x1a/0x20 [ 63.393100][ T5004] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 63.398941][ T5004] Code: 55 76 f9 0f 0b 0f b6 1d 37 00 57 06 31 ff 89 de e8 72 51 76 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 7d 55 76 f9 <0f> 0b 0f b6 1d 0f 00 57 06 31 ff 89 de e8 4b 51 76 f9 84 db 75 dd [ 63.418642][ T5004] RSP: 0018:ffffc90003a0f120 EFLAGS: 00010293 [ 63.424718][ T5004] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 63.432712][ T5004] RDX: ffff88801ebf5940 RSI: ffffffff880df0c3 RDI: 0000000000000006 [ 63.440699][ T5004] RBP: ffff88807cbdda00 R08: 0000000000000006 R09: 0000000000000621 [ 63.448675][ T5004] R10: 0000000000000519 R11: 0000000000094001 R12: ffff88807cbdda74 [ 63.456648][ T5004] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 63.464646][ T5004] ? skb_checksum_help+0x4a3/0x5c0 [ 63.469793][ T5004] ip_do_fragment+0x99f/0x17d0 [ 63.474661][ T5004] ? ip_fragment.constprop.0+0x240/0x240 [ 63.480570][ T5004] ? ip_frag_next+0xa50/0xa50 [ 63.485427][ T5004] ? slab_free_freelist_hook+0x8b/0x1c0 [ 63.491002][ T5004] ip_fragment.constprop.0+0x16b/0x240 [ 63.496646][ T5004] __ip_finish_output+0x4a0/0x650 [ 63.501677][ T5004] ip_finish_output+0x31/0x280 [ 63.506460][ T5004] ip_output+0x1a3/0x320 [ 63.510717][ T5004] ip_local_out+0xb3/0x1a0 [ 63.515146][ T5004] iptunnel_xmit+0x622/0xa40 [ 63.519748][ T5004] ip_tunnel_xmit+0xfc0/0x3170 [ 63.524526][ T5004] ? skb_eth_gso_segment+0x128/0x290 [ 63.529826][ T5004] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 63.535131][ T5004] ? __gre_xmit+0x4f4/0x980 [ 63.539653][ T5004] ipgre_xmit+0x6d3/0x8f0 [ 63.543995][ T5004] dev_hard_start_xmit+0x187/0x700 [ 63.549123][ T5004] __dev_queue_xmit+0x2be2/0x3b10 [ 63.554249][ T5004] ? netdev_core_pick_tx+0x390/0x390 [ 63.559541][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.564750][ T5004] ? hash_and_copy_to_iter+0x120/0x210 [ 63.570238][ T5004] ? hash_and_copy_to_iter+0x210/0x210 [ 63.575732][ T5004] ? skb_partial_csum_set+0x203/0x390 [ 63.581127][ T5004] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 63.587740][ T5004] ? packet_rcv_spkt+0x620/0x620 [ 63.592704][ T5004] packet_xmit+0x260/0x390 [ 63.597141][ T5004] packet_sendmsg+0x347f/0x5030 [ 63.602030][ T5004] ? aa_sk_perm+0x31d/0xb10 [ 63.606541][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 63.612459][ T5004] ? aa_af_perm+0x240/0x240 [ 63.616984][ T5004] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 63.622896][ T5004] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 63.628191][ T5004] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 63.634102][ T5004] sock_sendmsg+0xde/0x190 [ 63.638531][ T5004] ____sys_sendmsg+0x733/0x920 [ 63.643929][ T5004] ? copy_msghdr_from_user+0xfc/0x150 [ 63.649315][ T5004] ? kernel_sendmsg+0x50/0x50 [ 63.654009][ T5004] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 63.660018][ T5004] ___sys_sendmsg+0x110/0x1b0 [ 63.664721][ T5004] ? do_recvmmsg+0x6f0/0x6f0 [ 63.669342][ T5004] ? lock_sync+0x190/0x190 [ 63.673768][ T5004] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 63.678979][ T5004] ? do_raw_spin_lock+0x124/0x2b0 [ 63.684045][ T5004] ? spin_bug+0x1c0/0x1c0 [ 63.688400][ T5004] ? _raw_spin_lock_irq+0x45/0x50 [ 63.693450][ T5004] ? __fget_light+0x20a/0x270 [ 63.698157][ T5004] __sys_sendmsg+0xf7/0x1c0 [ 63.702678][ T5004] ? __sys_sendmsg_sock+0x40/0x40 [ 63.707718][ T5004] ? lock_downgrade+0x690/0x690 [ 63.712596][ T5004] ? lockdep_hardirqs_on+0x7d/0x100 [ 63.717807][ T5004] ? _raw_spin_unlock_irq+0x2e/0x50 [ 63.723052][ T5004] ? ptrace_notify+0xfe/0x140 [ 63.727744][ T5004] do_syscall_64+0x39/0xb0 [ 63.732184][ T5004] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.738187][ T5004] RIP: 0033:0x7fa2b0694559 [ 63.742605][ 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 [ 63.762424][ T5004] RSP: 002b:00007ffd7df84858 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.771024][ T5004] RAX: ffffffffffffffda RBX: 00007ffd7df84868 RCX: 00007fa2b0694559 [ 63.779088][ T5004] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 63.787060][ T5004] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 63.795033][ T5004] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd7df84870 [ 63.803035][ T5004] R13: 00007ffd7df84890 R14: 0000000000000000 R15: 0000000000000000 [ 63.811205][ T5004] [ 63.814423][ T5004] Kernel Offset: disabled [ 63.818815][ T5004] Rebooting in 86400 seconds..