./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor805199935 <...> Warning: Permanently added '10.128.1.46' (ECDSA) to the list of known hosts. execve("./syz-executor805199935", ["./syz-executor805199935"], 0x7fffd1df0860 /* 10 vars */) = 0 brk(NULL) = 0x55555683f000 brk(0x55555683fc40) = 0x55555683fc40 arch_prctl(ARCH_SET_FS, 0x55555683f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor805199935", 4096) = 27 brk(0x555556860c40) = 0x555556860c40 brk(0x555556861000) = 0x555556861000 mprotect(0x7fad382dc000, 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=0x55555683f5d0) = 5009 ./strace-static-x86_64: Process 5009 attached [pid 5009] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setsid() = 1 [pid 5009] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5009] unshare(CLONE_NEWNS) = 0 [pid 5009] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5009] unshare(CLONE_NEWIPC) = 0 [pid 5009] unshare(CLONE_NEWCGROUP) = 0 [pid 5009] unshare(CLONE_NEWUTS) = 0 [pid 5009] unshare(CLONE_SYSVSEM) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "16777216", 8) = 8 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "536870912", 9) = 9 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "8192", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5009] close(3) = 0 [pid 5009] getpid() = 1 [pid 5009] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 1d ab 3c 57 06 31 ff 89 de e8 7b ae 76 f9 84 db 75 dd [ 80.108092][ T5009] RSP: 0018:ffffc90003aff120 EFLAGS: 00010293 [ 80.114203][ T5009] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 80.122233][ T5009] RDX: ffff888027291dc0 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 80.130361][ T5009] RBP: ffff888020a263c0 R08: 0000000000000006 R09: 0000000000000621 [ 80.138395][ T5009] R10: 0000000000000519 R11: 0000000000094001 R12: ffff888020a26434 [ 80.146448][ T5009] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 80.154440][ T5009] FS: 000055555683f300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 80.163428][ T5009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.170097][ T5009] CR2: 0000000020001000 CR3: 00000000741b5000 CR4: 00000000003506f0 [ 80.178175][ T5009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.186213][ T5009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.194212][ T5009] Call Trace: [ 80.197583][ T5009] [ 80.200542][ T5009] ? __warn+0xe6/0x390 [ 80.204642][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.209838][ T5009] ? report_bug+0x2da/0x500 [ 80.214404][ T5009] ? handle_bug+0x3c/0x70 [ 80.218793][ T5009] ? exc_invalid_op+0x18/0x50 [ 80.223506][ T5009] ? asm_exc_invalid_op+0x1a/0x20 [ 80.228615][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.233778][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.238979][ T5009] ip_do_fragment+0x99f/0x17d0 [ 80.243804][ T5009] ? ip_fragment.constprop.0+0x240/0x240 [ 80.249531][ T5009] ? ip_frag_next+0xa50/0xa50 [ 80.254267][ T5009] ? slab_free_freelist_hook+0x8b/0x1c0 [ 80.259918][ T5009] ip_fragment.constprop.0+0x16b/0x240 [ 80.265464][ T5009] __ip_finish_output+0x4a0/0x650 [ 80.270505][ T5009] ip_finish_output+0x31/0x280 [ 80.275344][ T5009] ip_output+0x1a3/0x320 [ 80.279632][ T5009] ip_local_out+0xb3/0x1a0 [ 80.284062][ T5009] iptunnel_xmit+0x622/0xa40 [ 80.288730][ T5009] ip_tunnel_xmit+0xfc0/0x3170 [ 80.293541][ T5009] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 80.299560][ T5009] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 80.304950][ T5009] ? __gre_xmit+0x4f4/0x980 [ 80.309518][ T5009] ipgre_xmit+0x6d3/0x8f0 [ 80.313881][ T5009] dev_hard_start_xmit+0x187/0x700 [ 80.319075][ T5009] __dev_queue_xmit+0x2be2/0x3b10 [ 80.324156][ T5009] ? netdev_core_pick_tx+0x390/0x390 [ 80.329507][ T5009] ? hash_and_copy_to_iter+0x120/0x210 [ 80.335057][ T5009] ? hash_and_copy_to_iter+0x210/0x210 [ 80.340545][ T5009] ? skb_partial_csum_set+0x203/0x390 [ 80.346073][ T5009] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 80.352720][ T5009] ? packet_rcv_spkt+0x620/0x620 [ 80.357735][ T5009] packet_xmit+0x260/0x390 [ 80.362215][ T5009] packet_sendmsg+0x347f/0x5030 [ 80.367168][ T5009] ? aa_sk_perm+0x31d/0xb10 [ 80.371712][ T5009] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 80.377764][ T5009] ? aa_af_perm+0x240/0x240 [ 80.382307][ T5009] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 80.388275][ T5009] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 80.393607][ T5009] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 80.399580][ T5009] sock_sendmsg+0xde/0x190 [ 80.404039][ T5009] ____sys_sendmsg+0x71c/0x900 [ 80.408868][ T5009] ? copy_msghdr_from_user+0xfc/0x150 [ 80.414286][ T5009] ? kernel_sendmsg+0x50/0x50 [ 80.419062][ T5009] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 80.425139][ T5009] ___sys_sendmsg+0x110/0x1b0 [ 80.429877][ T5009] ? do_recvmmsg+0x6f0/0x6f0 [ 80.434536][ T5009] ? lock_sync+0x190/0x190 [ 80.439022][ T5009] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 80.444270][ T5009] ? do_raw_spin_lock+0x124/0x2b0 [ 80.449379][ T5009] ? spin_bug+0x1c0/0x1c0 [ 80.453763][ T5009] ? _raw_spin_lock_irq+0x45/0x50 [ 80.458896][ T5009] ? __fget_light+0x20a/0x270 [ 80.463642][ T5009] __sys_sendmsg+0xf7/0x1c0 [ 80.468299][ T5009] ? __sys_sendmsg_sock+0x40/0x40 [ 80.473441][ T5009] ? lock_downgrade+0x690/0x690 [ 80.478436][ T5009] ? lockdep_hardirqs_on+0x7d/0x100 [ 80.483694][ T5009] ? _raw_spin_unlock_irq+0x2e/0x50 [ 80.489008][ T5009] ? ptrace_notify+0xfe/0x140 [ 80.493749][ T5009] do_syscall_64+0x39/0xb0 [ 80.498277][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 80.504234][ T5009] RIP: 0033:0x7fad38268559 [ 80.508728][ T5009] 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 [ 80.528492][ T5009] RSP: 002b:00007ffea16212a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.537005][ T5009] RAX: ffffffffffffffda RBX: 00007ffea16212b8 RCX: 00007fad38268559 [ 80.545049][ T5009] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 80.553058][ T5009] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.561110][ T5009] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffea16212c0 [ 80.569144][ T5009] R13: 00007ffea16212e0 R14: 0000000000000000 R15: 0000000000000000 [ 80.577207][ T5009] [ 80.580272][ T5009] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 80.587568][ T5009] CPU: 0 PID: 5009 Comm: syz-executor805 Not tainted 6.4.0-rc4-syzkaller-00275-g6c0ec7ab5aaf #0 [ 80.597998][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 80.608062][ T5009] Call Trace: [ 80.611346][ T5009] [ 80.614282][ T5009] dump_stack_lvl+0xd9/0x150 [ 80.619323][ T5009] panic+0x686/0x730 [ 80.623240][ T5009] ? panic_smp_self_stop+0xa0/0xa0 [ 80.628385][ T5009] ? show_trace_log_lvl+0x284/0x390 [ 80.633618][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.638754][ T5009] check_panic_on_warn+0xb1/0xc0 [ 80.643744][ T5009] __warn+0xf2/0x390 [ 80.647681][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.652828][ T5009] report_bug+0x2da/0x500 [ 80.657200][ T5009] handle_bug+0x3c/0x70 [ 80.661377][ T5009] exc_invalid_op+0x18/0x50 [ 80.665901][ T5009] asm_exc_invalid_op+0x1a/0x20 [ 80.670797][ T5009] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 80.676561][ T5009] Code: b2 76 f9 0f 0b 0f b6 1d d3 3c 57 06 31 ff 89 de e8 a2 ae 76 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 ad b2 76 f9 <0f> 0b 0f b6 1d ab 3c 57 06 31 ff 89 de e8 7b ae 76 f9 84 db 75 dd [ 80.696196][ T5009] RSP: 0018:ffffc90003aff120 EFLAGS: 00010293 [ 80.702289][ T5009] RAX: 0000000000000000 RBX: 000000000000061f RCX: 0000000000000000 [ 80.710279][ T5009] RDX: ffff888027291dc0 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 80.718296][ T5009] RBP: ffff888020a263c0 R08: 0000000000000006 R09: 0000000000000621 [ 80.726303][ T5009] R10: 0000000000000519 R11: 0000000000094001 R12: ffff888020a26434 [ 80.734292][ T5009] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 80.742309][ T5009] ? skb_checksum_help+0x4a3/0x5c0 [ 80.747470][ T5009] ip_do_fragment+0x99f/0x17d0 [ 80.752278][ T5009] ? ip_fragment.constprop.0+0x240/0x240 [ 80.757965][ T5009] ? ip_frag_next+0xa50/0xa50 [ 80.762683][ T5009] ? slab_free_freelist_hook+0x8b/0x1c0 [ 80.768296][ T5009] ip_fragment.constprop.0+0x16b/0x240 [ 80.773812][ T5009] __ip_finish_output+0x4a0/0x650 [ 80.778867][ T5009] ip_finish_output+0x31/0x280 [ 80.783662][ T5009] ip_output+0x1a3/0x320 [ 80.787927][ T5009] ip_local_out+0xb3/0x1a0 [ 80.792374][ T5009] iptunnel_xmit+0x622/0xa40 [ 80.797007][ T5009] ip_tunnel_xmit+0xfc0/0x3170 [ 80.801809][ T5009] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 80.807752][ T5009] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 80.813077][ T5009] ? __gre_xmit+0x4f4/0x980 [ 80.817614][ T5009] ipgre_xmit+0x6d3/0x8f0 [ 80.821975][ T5009] dev_hard_start_xmit+0x187/0x700 [ 80.827121][ T5009] __dev_queue_xmit+0x2be2/0x3b10 [ 80.832199][ T5009] ? netdev_core_pick_tx+0x390/0x390 [ 80.837526][ T5009] ? hash_and_copy_to_iter+0x120/0x210 [ 80.843026][ T5009] ? hash_and_copy_to_iter+0x210/0x210 [ 80.848519][ T5009] ? skb_partial_csum_set+0x203/0x390 [ 80.853923][ T5009] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 80.860557][ T5009] ? packet_rcv_spkt+0x620/0x620 [ 80.865529][ T5009] packet_xmit+0x260/0x390 [ 80.869983][ T5009] packet_sendmsg+0x347f/0x5030 [ 80.874890][ T5009] ? aa_sk_perm+0x31d/0xb10 [ 80.879425][ T5009] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 80.885353][ T5009] ? aa_af_perm+0x240/0x240 [ 80.889878][ T5009] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 80.895803][ T5009] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 80.901111][ T5009] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 80.907041][ T5009] sock_sendmsg+0xde/0x190 [ 80.911483][ T5009] ____sys_sendmsg+0x71c/0x900 [ 80.916274][ T5009] ? copy_msghdr_from_user+0xfc/0x150 [ 80.921672][ T5009] ? kernel_sendmsg+0x50/0x50 [ 80.926381][ T5009] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 80.932399][ T5009] ___sys_sendmsg+0x110/0x1b0 [ 80.937115][ T5009] ? do_recvmmsg+0x6f0/0x6f0 [ 80.941750][ T5009] ? lock_sync+0x190/0x190 [ 80.946201][ T5009] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 80.952044][ T5009] ? do_raw_spin_lock+0x124/0x2b0 [ 80.957108][ T5009] ? spin_bug+0x1c0/0x1c0 [ 80.961473][ T5009] ? _raw_spin_lock_irq+0x45/0x50 [ 80.966535][ T5009] ? __fget_light+0x20a/0x270 [ 80.971263][ T5009] __sys_sendmsg+0xf7/0x1c0 [ 80.975798][ T5009] ? __sys_sendmsg_sock+0x40/0x40 [ 80.980851][ T5009] ? lock_downgrade+0x690/0x690 [ 80.985742][ T5009] ? lockdep_hardirqs_on+0x7d/0x100 [ 80.990971][ T5009] ? _raw_spin_unlock_irq+0x2e/0x50 [ 80.996203][ T5009] ? ptrace_notify+0xfe/0x140 [ 81.000915][ T5009] do_syscall_64+0x39/0xb0 [ 81.005457][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 81.011389][ T5009] RIP: 0033:0x7fad38268559 [ 81.015824][ T5009] 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 [ 81.035541][ T5009] RSP: 002b:00007ffea16212a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.043975][ T5009] RAX: ffffffffffffffda RBX: 00007ffea16212b8 RCX: 00007fad38268559 [ 81.051967][ T5009] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.059955][ T5009] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 81.067946][ T5009] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffea16212c0 [ 81.075954][ T5009] R13: 00007ffea16212e0 R14: 0000000000000000 R15: 0000000000000000 [ 81.083972][ T5009] [ 81.087258][ T5009] Kernel Offset: disabled [ 81.091684][ T5009] Rebooting in 86400 seconds..