./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor42054895 <...> Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts. execve("./syz-executor42054895", ["./syz-executor42054895"], 0x7ffe6c603130 /* 10 vars */) = 0 brk(NULL) = 0x555556db7000 brk(0x555556db7c40) = 0x555556db7c40 arch_prctl(ARCH_SET_FS, 0x555556db7300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor42054895", 4096) = 26 brk(0x555556dd8c40) = 0x555556dd8c40 brk(0x555556dd9000) = 0x555556dd9000 mprotect(0x7f8dcd2f2000, 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=0x555556db75d0) = 5003 ./strace-static-x86_64: Process 5003 attached [pid 5003] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5003] setsid() = 1 [pid 5003] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5003] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5003] unshare(CLONE_NEWNS) = 0 [pid 5003] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5003] unshare(CLONE_NEWIPC) = 0 [pid 5003] unshare(CLONE_NEWCGROUP) = 0 [pid 5003] unshare(CLONE_NEWUTS) = 0 [pid 5003] unshare(CLONE_SYSVSEM) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "16777216", 8) = 8 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "536870912", 9) = 9 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "8192", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024", 4) = 4 [pid 5003] close(3) = 0 [pid 5003] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5003] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5003] close(3) = 0 [pid 5003] getpid() = 1 [pid 5003] 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 [ 60.483475][ T5003] RSP: 0018:ffffc90003a7f120 EFLAGS: 00010293 [ 60.489680][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 60.497741][ T5003] RDX: ffff88807d875940 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 60.505740][ T5003] RBP: ffff8880727ca8c0 R08: 0000000000000006 R09: 00000000000006aa [ 60.513783][ T5003] R10: 0000000000000688 R11: ffffffff8a0ffe59 R12: ffff8880727ca934 [ 60.521815][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 60.529874][ T5003] FS: 0000555556db7300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 60.538859][ T5003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.545458][ T5003] CR2: 0000000020001000 CR3: 0000000072896000 CR4: 00000000003506f0 [ 60.553523][ T5003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.561543][ T5003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.569554][ T5003] Call Trace: [ 60.572927][ T5003] [ 60.575848][ T5003] ? __warn+0xe6/0x390 [ 60.579968][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.585106][ T5003] ? report_bug+0x2da/0x500 [ 60.590200][ T5003] ? handle_bug+0x3c/0x70 [ 60.594541][ T5003] ? exc_invalid_op+0x18/0x50 [ 60.599264][ T5003] ? asm_exc_invalid_op+0x1a/0x20 [ 60.604322][ T5003] ? do_syscall_64+0x39/0xb0 [ 60.608977][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.614113][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.619282][ T5003] ip_do_fragment+0x99f/0x17d0 [ 60.624075][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 60.629789][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 60.635640][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 60.641022][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.646280][ T5003] ? ip_frag_next+0xa50/0xa50 [ 60.651083][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 60.656707][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 60.661318][ T5003] ? kmem_cache_free+0xe9/0x480 [ 60.666228][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 60.671720][ T5003] __ip_finish_output+0x4a0/0x650 [ 60.676806][ T5003] ip_finish_output+0x31/0x280 [ 60.681583][ T5003] ip_output+0x1a3/0x320 [ 60.685819][ T5003] ip_local_out+0xb3/0x1a0 [ 60.690292][ T5003] iptunnel_xmit+0x622/0xa40 [ 60.694903][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 60.699720][ T5003] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 60.705641][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 60.710985][ T5003] ? __gre_xmit+0x4f4/0x980 [ 60.715601][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 60.719979][ T5003] dev_hard_start_xmit+0x187/0x700 [ 60.725109][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 60.730184][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 60.735482][ T5003] ? hash_and_copy_to_iter+0x120/0x210 [ 60.740998][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 60.746520][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 60.751908][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 60.758545][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 60.763504][ T5003] packet_xmit+0x260/0x390 [ 60.768050][ T5003] packet_sendmsg+0x347f/0x5030 [ 60.772960][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 60.777540][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.783471][ T5003] ? aa_af_perm+0x240/0x240 [ 60.788028][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 60.794031][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 60.799358][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.805271][ T5003] sock_sendmsg+0xde/0x190 [ 60.809736][ T5003] ____sys_sendmsg+0x71c/0x900 [ 60.814515][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 60.819934][ T5003] ? kernel_sendmsg+0x50/0x50 [ 60.824629][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.830665][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 60.835360][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 60.840006][ T5003] ? lock_sync+0x190/0x190 [ 60.844440][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 60.849960][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 60.855007][ T5003] ? spin_bug+0x1c0/0x1c0 [ 60.859383][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 60.864431][ T5003] ? __fget_light+0x20a/0x270 [ 60.869167][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 60.873686][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 60.878756][ T5003] ? lock_downgrade+0x690/0x690 [ 60.883634][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.888886][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.894107][ T5003] ? ptrace_notify+0xfe/0x140 [ 60.898882][ T5003] do_syscall_64+0x39/0xb0 [ 60.903340][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.909412][ T5003] RIP: 0033:0x7f8dcd27e559 [ 60.913932][ T5003] 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 [ 60.933684][ T5003] RSP: 002b:00007ffe2cd72118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.942155][ T5003] RAX: ffffffffffffffda RBX: 00007ffe2cd72128 RCX: 00007f8dcd27e559 [ 60.950165][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 60.958180][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 60.966186][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe2cd72130 [ 60.974168][ T5003] R13: 00007ffe2cd72150 R14: 0000000000000000 R15: 0000000000000000 [ 60.982214][ T5003] [ 60.985244][ T5003] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 60.992513][ T5003] CPU: 0 PID: 5003 Comm: syz-executor420 Not tainted 6.4.0-rc4-syzkaller-00275-g6c0ec7ab5aaf #0 [ 61.002926][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 61.012997][ T5003] Call Trace: [ 61.016272][ T5003] [ 61.019225][ T5003] dump_stack_lvl+0xd9/0x150 [ 61.023812][ T5003] panic+0x686/0x730 [ 61.027704][ T5003] ? panic_smp_self_stop+0xa0/0xa0 [ 61.032806][ T5003] ? show_trace_log_lvl+0x284/0x390 [ 61.038020][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 61.043153][ T5003] check_panic_on_warn+0xb1/0xc0 [ 61.048107][ T5003] __warn+0xf2/0x390 [ 61.052016][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 61.057145][ T5003] report_bug+0x2da/0x500 [ 61.061496][ T5003] handle_bug+0x3c/0x70 [ 61.065656][ T5003] exc_invalid_op+0x18/0x50 [ 61.070170][ T5003] asm_exc_invalid_op+0x1a/0x20 [ 61.075035][ T5003] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 61.080856][ T5003] 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 [ 61.100468][ T5003] RSP: 0018:ffffc90003a7f120 EFLAGS: 00010293 [ 61.106540][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 61.114512][ T5003] RDX: ffff88807d875940 RSI: ffffffff880d93a3 RDI: 0000000000000006 [ 61.122486][ T5003] RBP: ffff8880727ca8c0 R08: 0000000000000006 R09: 00000000000006aa [ 61.130461][ T5003] R10: 0000000000000688 R11: ffffffff8a0ffe59 R12: ffff8880727ca934 [ 61.138453][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 61.146450][ T5003] ? do_syscall_64+0x39/0xb0 [ 61.151211][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 61.156359][ T5003] ip_do_fragment+0x99f/0x17d0 [ 61.161142][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 61.166792][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 61.172614][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 61.177908][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 61.183113][ T5003] ? ip_frag_next+0xa50/0xa50 [ 61.187827][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 61.193488][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 61.198096][ T5003] ? kmem_cache_free+0xe9/0x480 [ 61.202973][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 61.208454][ T5003] __ip_finish_output+0x4a0/0x650 [ 61.213488][ T5003] ip_finish_output+0x31/0x280 [ 61.218261][ T5003] ip_output+0x1a3/0x320 [ 61.222511][ T5003] ip_local_out+0xb3/0x1a0 [ 61.226934][ T5003] iptunnel_xmit+0x622/0xa40 [ 61.231535][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 61.236311][ T5003] ? __xdp_reg_mem_model.part.0+0x3d8/0x550 [ 61.242226][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 61.247527][ T5003] ? __gre_xmit+0x4f4/0x980 [ 61.252061][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 61.256416][ T5003] dev_hard_start_xmit+0x187/0x700 [ 61.261547][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 61.266593][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 61.271889][ T5003] ? hash_and_copy_to_iter+0x120/0x210 [ 61.277357][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 61.282823][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 61.288213][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 61.294820][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 61.299771][ T5003] packet_xmit+0x260/0x390 [ 61.304296][ T5003] packet_sendmsg+0x347f/0x5030 [ 61.309211][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 61.313831][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 61.319743][ T5003] ? aa_af_perm+0x240/0x240 [ 61.324249][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 61.330242][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 61.335627][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 61.341536][ T5003] sock_sendmsg+0xde/0x190 [ 61.345965][ T5003] ____sys_sendmsg+0x71c/0x900 [ 61.350737][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 61.356116][ T5003] ? kernel_sendmsg+0x50/0x50 [ 61.360809][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 61.366811][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 61.371496][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 61.376105][ T5003] ? lock_sync+0x190/0x190 [ 61.380534][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 61.385743][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 61.390782][ T5003] ? spin_bug+0x1c0/0x1c0 [ 61.395122][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 61.400162][ T5003] ? __fget_light+0x20a/0x270 [ 61.404859][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 61.409368][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 61.414401][ T5003] ? lock_downgrade+0x690/0x690 [ 61.419269][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 61.424474][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 61.429680][ T5003] ? ptrace_notify+0xfe/0x140 [ 61.434662][ T5003] do_syscall_64+0x39/0xb0 [ 61.439116][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.445029][ T5003] RIP: 0033:0x7f8dcd27e559 [ 61.449449][ T5003] 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 [ 61.469069][ T5003] RSP: 002b:00007ffe2cd72118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.477749][ T5003] RAX: ffffffffffffffda RBX: 00007ffe2cd72128 RCX: 00007f8dcd27e559 [ 61.485718][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 61.493691][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 61.501663][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe2cd72130 [ 61.509635][ T5003] R13: 00007ffe2cd72150 R14: 0000000000000000 R15: 0000000000000000 [ 61.517618][ T5003] [ 61.520833][ T5003] Kernel Offset: disabled [ 61.525222][ T5003] Rebooting in 86400 seconds..