./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor289381041 <...> Warning: Permanently added '10.128.1.86' (ECDSA) to the list of known hosts. execve("./syz-executor289381041", ["./syz-executor289381041"], 0x7ffc97aceab0 /* 10 vars */) = 0 brk(NULL) = 0x555557192000 brk(0x555557192c40) = 0x555557192c40 arch_prctl(ARCH_SET_FS, 0x555557192300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor289381041", 4096) = 27 brk(0x5555571b3c40) = 0x5555571b3c40 brk(0x5555571b4000) = 0x5555571b4000 mprotect(0x7fd08108c000, 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=0x5555571925d0) = 5002 ./strace-static-x86_64: Process 5002 attached [pid 5002] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5002] setsid() = 1 [pid 5002] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5002] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5002] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5002] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5002] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5002] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5002] unshare(CLONE_NEWNS) = 0 [pid 5002] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5002] unshare(CLONE_NEWIPC) = 0 [pid 5002] unshare(CLONE_NEWCGROUP) = 0 [pid 5002] unshare(CLONE_NEWUTS) = 0 [pid 5002] unshare(CLONE_SYSVSEM) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "16777216", 8) = 8 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "536870912", 9) = 9 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "1024", 4) = 4 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "8192", 4) = 4 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "1024", 4) = 4 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "1024", 4) = 4 [pid 5002] close(3) = 0 [pid 5002] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5002] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5002] close(3) = 0 [pid 5002] getpid() = 1 [pid 5002] 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 [ 58.215857][ T5002] RSP: 0018:ffffc90003a7f120 EFLAGS: 00010293 [ 58.221917][ T5002] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 58.229958][ T5002] RDX: ffff88801f3b3b80 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 58.238019][ T5002] RBP: ffff8880276c7c80 R08: 0000000000000006 R09: 00000000000006aa [ 58.246058][ T5002] R10: 0000000000000688 R11: ffffffff8a0ffe59 R12: ffff8880276c7cf4 [ 58.254042][ T5002] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 58.262057][ T5002] FS: 0000555557192300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 58.271037][ T5002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.277678][ T5002] CR2: 0000000020001000 CR3: 000000002ae3c000 CR4: 00000000003506f0 [ 58.285695][ T5002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.293659][ T5002] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.301659][ T5002] Call Trace: [ 58.304991][ T5002] [ 58.307931][ T5002] ? __warn+0xe6/0x390 [ 58.312109][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.317300][ T5002] ? report_bug+0x2da/0x500 [ 58.321840][ T5002] ? handle_bug+0x3c/0x70 [ 58.326241][ T5002] ? exc_invalid_op+0x18/0x50 [ 58.330948][ T5002] ? asm_exc_invalid_op+0x1a/0x20 [ 58.336032][ T5002] ? do_syscall_64+0x39/0xb0 [ 58.340652][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.345816][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.350953][ T5002] ip_do_fragment+0x99f/0x17d0 [ 58.355813][ T5002] ? ip_fragment.constprop.0+0x240/0x240 [ 58.361508][ T5002] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 58.367395][ T5002] ? kasan_quarantine_put+0xf9/0x220 [ 58.372698][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 58.377960][ T5002] ? ip_frag_next+0xa50/0xa50 [ 58.382671][ T5002] ? slab_free_freelist_hook+0x8b/0x1c0 [ 58.388282][ T5002] ? kfree_skbmem+0xef/0x1b0 [ 58.392893][ T5002] ? kmem_cache_free+0xe9/0x480 [ 58.397801][ T5002] ip_fragment.constprop.0+0x16b/0x240 [ 58.403287][ T5002] __ip_finish_output+0x4a0/0x650 [ 58.408367][ T5002] ip_finish_output+0x31/0x280 [ 58.413149][ T5002] ip_output+0x1a3/0x320 [ 58.417449][ T5002] ip_local_out+0xb3/0x1a0 [ 58.421885][ T5002] iptunnel_xmit+0x622/0xa40 [ 58.426529][ T5002] ip_tunnel_xmit+0xfc0/0x3170 [ 58.431313][ T5002] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 58.437298][ T5002] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 58.442624][ T5002] ? __gre_xmit+0x4f4/0x980 [ 58.447192][ T5002] ipgre_xmit+0x6d3/0x8f0 [ 58.451540][ T5002] dev_hard_start_xmit+0x187/0x700 [ 58.456702][ T5002] __dev_queue_xmit+0x2be2/0x3b10 [ 58.461751][ T5002] ? netdev_core_pick_tx+0x390/0x390 [ 58.467101][ T5002] ? hash_and_copy_to_iter+0x120/0x210 [ 58.472580][ T5002] ? hash_and_copy_to_iter+0x210/0x210 [ 58.478112][ T5002] ? skb_partial_csum_set+0x203/0x390 [ 58.483518][ T5002] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 58.490205][ T5002] ? packet_rcv_spkt+0x620/0x620 [ 58.495200][ T5002] packet_xmit+0x260/0x390 [ 58.499640][ T5002] packet_sendmsg+0x347f/0x5030 [ 58.504563][ T5002] ? aa_sk_perm+0x31d/0xb10 [ 58.509083][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 58.515053][ T5002] ? aa_af_perm+0x240/0x240 [ 58.519744][ T5002] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 58.525696][ T5002] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 58.530996][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 58.536946][ T5002] sock_sendmsg+0xde/0x190 [ 58.541380][ T5002] ____sys_sendmsg+0x71c/0x900 [ 58.546197][ T5002] ? copy_msghdr_from_user+0xfc/0x150 [ 58.551590][ T5002] ? kernel_sendmsg+0x50/0x50 [ 58.556323][ T5002] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 58.562335][ T5002] ___sys_sendmsg+0x110/0x1b0 [ 58.567068][ T5002] ? do_recvmmsg+0x6f0/0x6f0 [ 58.571692][ T5002] ? lock_sync+0x190/0x190 [ 58.576156][ T5002] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 58.581376][ T5002] ? do_raw_spin_lock+0x124/0x2b0 [ 58.586458][ T5002] ? spin_bug+0x1c0/0x1c0 [ 58.590812][ T5002] ? _raw_spin_lock_irq+0x45/0x50 [ 58.595903][ T5002] ? __fget_light+0x20a/0x270 [ 58.600613][ T5002] __sys_sendmsg+0xf7/0x1c0 [ 58.605193][ T5002] ? __sys_sendmsg_sock+0x40/0x40 [ 58.610235][ T5002] ? lock_downgrade+0x690/0x690 [ 58.615167][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 58.620392][ T5002] ? _raw_spin_unlock_irq+0x2e/0x50 [ 58.625680][ T5002] ? ptrace_notify+0xfe/0x140 [ 58.630374][ T5002] do_syscall_64+0x39/0xb0 [ 58.634855][ T5002] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.640774][ T5002] RIP: 0033:0x7fd081018559 [ 58.645234][ T5002] 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 [ 58.664895][ T5002] RSP: 002b:00007fff2f652248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.673300][ T5002] RAX: ffffffffffffffda RBX: 00007fff2f652258 RCX: 00007fd081018559 [ 58.681329][ T5002] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 58.689344][ T5002] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 58.697349][ T5002] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff2f652260 [ 58.705365][ T5002] R13: 00007fff2f652280 R14: 0000000000000000 R15: 0000000000000000 [ 58.713339][ T5002] [ 58.716399][ T5002] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 58.723682][ T5002] CPU: 0 PID: 5002 Comm: syz-executor289 Not tainted 6.4.0-rc4-syzkaller-00275-g6c0ec7ab5aaf #0 [ 58.734083][ T5002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 58.744146][ T5002] Call Trace: [ 58.747419][ T5002] [ 58.750337][ T5002] dump_stack_lvl+0xd9/0x150 [ 58.754921][ T5002] panic+0x686/0x730 [ 58.758833][ T5002] ? panic_smp_self_stop+0xa0/0xa0 [ 58.763962][ T5002] ? show_trace_log_lvl+0x284/0x390 [ 58.769170][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.774287][ T5002] check_panic_on_warn+0xb1/0xc0 [ 58.779268][ T5002] __warn+0xf2/0x390 [ 58.783185][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.788314][ T5002] report_bug+0x2da/0x500 [ 58.792662][ T5002] handle_bug+0x3c/0x70 [ 58.796819][ T5002] exc_invalid_op+0x18/0x50 [ 58.801352][ T5002] asm_exc_invalid_op+0x1a/0x20 [ 58.806244][ T5002] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 58.811984][ T5002] 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 [ 58.831598][ T5002] RSP: 0018:ffffc90003a7f120 EFLAGS: 00010293 [ 58.837672][ T5002] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 58.845644][ T5002] RDX: ffff88801f3b3b80 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 58.853619][ T5002] RBP: ffff8880276c7c80 R08: 0000000000000006 R09: 00000000000006aa [ 58.861593][ T5002] R10: 0000000000000688 R11: ffffffff8a0ffe59 R12: ffff8880276c7cf4 [ 58.869568][ T5002] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 58.877552][ T5002] ? do_syscall_64+0x39/0xb0 [ 58.882167][ T5002] ? skb_checksum_help+0x4a3/0x5c0 [ 58.887303][ T5002] ip_do_fragment+0x99f/0x17d0 [ 58.892084][ T5002] ? ip_fragment.constprop.0+0x240/0x240 [ 58.897735][ T5002] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 58.903563][ T5002] ? kasan_quarantine_put+0xf9/0x220 [ 58.908857][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 58.914060][ T5002] ? ip_frag_next+0xa50/0xa50 [ 58.918761][ T5002] ? slab_free_freelist_hook+0x8b/0x1c0 [ 58.924321][ T5002] ? kfree_skbmem+0xef/0x1b0 [ 58.928917][ T5002] ? kmem_cache_free+0xe9/0x480 [ 58.933790][ T5002] ip_fragment.constprop.0+0x16b/0x240 [ 58.939270][ T5002] __ip_finish_output+0x4a0/0x650 [ 58.944300][ T5002] ip_finish_output+0x31/0x280 [ 58.949073][ T5002] ip_output+0x1a3/0x320 [ 58.953325][ T5002] ip_local_out+0xb3/0x1a0 [ 58.957749][ T5002] iptunnel_xmit+0x622/0xa40 [ 58.962355][ T5002] ip_tunnel_xmit+0xfc0/0x3170 [ 58.967131][ T5002] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 58.973047][ T5002] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 58.978347][ T5002] ? __gre_xmit+0x4f4/0x980 [ 58.982863][ T5002] ipgre_xmit+0x6d3/0x8f0 [ 58.987231][ T5002] dev_hard_start_xmit+0x187/0x700 [ 58.992369][ T5002] __dev_queue_xmit+0x2be2/0x3b10 [ 58.997407][ T5002] ? netdev_core_pick_tx+0x390/0x390 [ 59.002699][ T5002] ? hash_and_copy_to_iter+0x120/0x210 [ 59.008167][ T5002] ? hash_and_copy_to_iter+0x210/0x210 [ 59.013636][ T5002] ? skb_partial_csum_set+0x203/0x390 [ 59.019021][ T5002] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 59.025632][ T5002] ? packet_rcv_spkt+0x620/0x620 [ 59.030673][ T5002] packet_xmit+0x260/0x390 [ 59.035105][ T5002] packet_sendmsg+0x347f/0x5030 [ 59.039993][ T5002] ? aa_sk_perm+0x31d/0xb10 [ 59.044510][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.050414][ T5002] ? aa_af_perm+0x240/0x240 [ 59.054924][ T5002] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 59.060825][ T5002] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.066116][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.072020][ T5002] sock_sendmsg+0xde/0x190 [ 59.076442][ T5002] ____sys_sendmsg+0x71c/0x900 [ 59.081218][ T5002] ? copy_msghdr_from_user+0xfc/0x150 [ 59.086596][ T5002] ? kernel_sendmsg+0x50/0x50 [ 59.091286][ T5002] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 59.097283][ T5002] ___sys_sendmsg+0x110/0x1b0 [ 59.101968][ T5002] ? do_recvmmsg+0x6f0/0x6f0 [ 59.106579][ T5002] ? lock_sync+0x190/0x190 [ 59.111004][ T5002] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 59.116218][ T5002] ? do_raw_spin_lock+0x124/0x2b0 [ 59.121257][ T5002] ? spin_bug+0x1c0/0x1c0 [ 59.125600][ T5002] ? _raw_spin_lock_irq+0x45/0x50 [ 59.130640][ T5002] ? __fget_light+0x20a/0x270 [ 59.135337][ T5002] __sys_sendmsg+0xf7/0x1c0 [ 59.139854][ T5002] ? __sys_sendmsg_sock+0x40/0x40 [ 59.144887][ T5002] ? lock_downgrade+0x690/0x690 [ 59.149762][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.154968][ T5002] ? _raw_spin_unlock_irq+0x2e/0x50 [ 59.160181][ T5002] ? ptrace_notify+0xfe/0x140 [ 59.164879][ T5002] do_syscall_64+0x39/0xb0 [ 59.169312][ T5002] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.175224][ T5002] RIP: 0033:0x7fd081018559 [ 59.179644][ T5002] 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 [ 59.199271][ T5002] RSP: 002b:00007fff2f652248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.208124][ T5002] RAX: ffffffffffffffda RBX: 00007fff2f652258 RCX: 00007fd081018559 [ 59.216100][ T5002] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 59.224077][ T5002] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 59.232051][ T5002] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff2f652260 [ 59.240026][ T5002] R13: 00007fff2f652280 R14: 0000000000000000 R15: 0000000000000000 [ 59.248014][ T5002] [ 59.251091][ T5002] Kernel Offset: disabled [ 59.255484][ T5002] Rebooting in 86400 seconds..