./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor218449977 <...> Warning: Permanently added '10.128.0.219' (ED25519) to the list of known hosts. execve("./syz-executor218449977", ["./syz-executor218449977"], 0x7ffc07941950 /* 10 vars */) = 0 brk(NULL) = 0x555555b68000 brk(0x555555b68d00) = 0x555555b68d00 arch_prctl(ARCH_SET_FS, 0x555555b68380) = 0 set_tid_address(0x555555b68650) = 5042 set_robust_list(0x555555b68660, 24) = 0 rseq(0x555555b68ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor218449977", 4096) = 27 getrandom("\x8d\xa4\x66\x67\x58\x09\xd9\xac", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555b68d00 brk(0x555555b89d00) = 0x555555b89d00 brk(0x555555b8a000) = 0x555555b8a000 mprotect(0x7fc2d2aff000, 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=0x555555b68650) = 5043 ./strace-static-x86_64: Process 5043 attached [pid 5043] set_robust_list(0x555555b68660, 24) = 0 [pid 5043] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5043] setsid() = 1 [pid 5043] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5043] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5043] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5043] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5043] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5043] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5043] unshare(CLONE_NEWNS) = 0 [pid 5043] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5043] unshare(CLONE_NEWIPC) = 0 [pid 5043] unshare(CLONE_NEWCGROUP) = 0 [pid 5043] unshare(CLONE_NEWUTS) = 0 [pid 5043] unshare(CLONE_SYSVSEM) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "16777216", 8) = 8 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "536870912", 9) = 9 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "1024", 4) = 4 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "8192", 4) = 4 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "1024", 4) = 4 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "1024", 4) = 4 [pid 5043] close(3) = 0 [pid 5043] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5043] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5043] close(3) = 0 [pid 5043] getpid() = 1 [pid 5043] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 2d a5 34 87 06 31 ff 89 ee e8 39 11 57 f9 40 84 ed 75 [ 93.483617][ T5043] RSP: 0018:ffffc900039df0b8 EFLAGS: 00010293 [ 93.489735][ T5043] RAX: 0000000000000000 RBX: ffff888020c51dc0 RCX: 0000000000000000 [ 93.497813][ T5043] RDX: ffff8880293f1dc0 RSI: ffffffff8830c235 RDI: 0000000000000006 [ 93.505814][ T5043] RBP: ffff888020c51e34 R08: 0000000000000006 R09: 0000000000000621 [ 93.513836][ T5043] R10: 0000000000000519 R11: 000820aaaaaaaaaa R12: 000000000000061f [ 93.521853][ T5043] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 93.529868][ T5043] FS: 0000555555b68380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 93.538866][ T5043] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.545474][ T5043] CR2: 0000000020001000 CR3: 000000007bc28000 CR4: 00000000003506e0 [ 93.553505][ T5043] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.561544][ T5043] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.569569][ T5043] Call Trace: [ 93.572876][ T5043] [ 93.575832][ T5043] ? show_regs+0x8f/0xa0 [ 93.580145][ T5043] ? __warn+0xe6/0x380 [ 93.584245][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 93.589845][ T5043] ? report_bug+0x3bc/0x580 [ 93.594389][ T5043] ? handle_bug+0x3c/0x70 [ 93.598776][ T5043] ? exc_invalid_op+0x17/0x40 [ 93.603499][ T5043] ? asm_exc_invalid_op+0x1a/0x20 [ 93.608582][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 93.613733][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 93.618892][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 93.624045][ T5043] ip_do_fragment+0xa1b/0x18b0 [ 93.628865][ T5043] ? ip_fragment.constprop.0+0x230/0x230 [ 93.634547][ T5043] ? ip_frag_next+0xa40/0xa40 [ 93.639275][ T5043] ? slab_free_freelist_hook+0x114/0x1e0 [ 93.644984][ T5043] ip_fragment.constprop.0+0x161/0x230 [ 93.650505][ T5043] __ip_finish_output+0x49a/0x640 [ 93.655569][ T5043] ip_finish_output+0x31/0x310 [ 93.660388][ T5043] ip_output+0x198/0x310 [ 93.664670][ T5043] ip_local_out+0xaf/0x190 [ 93.669141][ T5043] iptunnel_xmit+0x61a/0xa30 [ 93.673790][ T5043] ip_tunnel_xmit+0x1e14/0x3350 [ 93.678704][ T5043] ? print_irqtrace_events+0x228/0x270 [ 93.684213][ T5043] ? ip_md_tunnel_xmit+0x1f90/0x1f90 [ 93.689580][ T5043] ? skb_mac_gso_segment+0x3d8/0x610 [ 93.694914][ T5043] ? __gre_xmit+0x4f5/0x990 [ 93.699505][ T5043] ipgre_xmit+0x63c/0x910 [ 93.703893][ T5043] dev_hard_start_xmit+0x13d/0x6c0 [ 93.709090][ T5043] __dev_queue_xmit+0x9be/0x3d60 [ 93.714073][ T5043] ? netdev_core_pick_tx+0x390/0x390 [ 93.719413][ T5043] ? skb_partial_csum_set+0x202/0x390 [ 93.724831][ T5043] ? virtio_net_hdr_to_skb.constprop.0+0x685/0x1230 [ 93.731486][ T5043] ? packet_release+0xdc0/0xdc0 [ 93.736370][ T5043] packet_xmit+0x257/0x380 [ 93.740828][ T5043] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 93.746780][ T5043] packet_sendmsg+0x24c7/0x5570 [ 93.751694][ T5043] ? preempt_count_sub+0x150/0x150 [ 93.756848][ T5043] ? rcu_read_lock_held+0x9/0x40 [ 93.761842][ T5043] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 93.767823][ T5043] ? aa_sk_perm+0x2c1/0xae0 [ 93.772341][ T5043] ? rcu_is_watching+0x12/0xb0 [ 93.777153][ T5043] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 93.783076][ T5043] ? aa_af_perm+0x260/0x260 [ 93.787627][ T5043] ? import_ubuf+0x1f5/0x260 [ 93.792259][ T5043] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 93.797602][ T5043] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 93.803532][ T5043] sock_sendmsg+0xd9/0x180 [ 93.808009][ T5043] ____sys_sendmsg+0x6ac/0x940 [ 93.812823][ T5043] ? copy_msghdr_from_user+0x10b/0x160 [ 93.818354][ T5043] ? kernel_sendmsg+0x50/0x50 [ 93.823087][ T5043] ? finish_task_switch.isra.0+0x216/0xc90 [ 93.828945][ T5043] ? __switch_to+0x73d/0x1340 [ 93.833668][ T5043] ___sys_sendmsg+0x135/0x1d0 [ 93.838419][ T5043] ? do_recvmmsg+0x740/0x740 [ 93.843063][ T5043] ? lock_sync+0x190/0x190 [ 93.847537][ T5043] ? ptrace_stop.part.0+0x4b4/0x8f0 [ 93.852771][ T5043] ? __fget_light+0x1fc/0x260 [ 93.857509][ T5043] __sys_sendmsg+0x117/0x1e0 [ 93.862145][ T5043] ? __sys_sendmsg_sock+0x30/0x30 [ 93.867221][ T5043] ? ptrace_notify+0xf4/0x130 [ 93.871934][ T5043] ? _raw_spin_unlock_irq+0x2e/0x50 [ 93.877178][ T5043] ? ptrace_notify+0xf4/0x130 [ 93.881882][ T5043] do_syscall_64+0x38/0xb0 [ 93.886317][ T5043] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 93.892273][ T5043] RIP: 0033:0x7fc2d2a87499 [ 93.896709][ T5043] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 93.916361][ T5043] RSP: 002b:00007ffefa6f53c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.924835][ T5043] RAX: ffffffffffffffda RBX: 00007fc2d2ad4390 RCX: 00007fc2d2a87499 [ 93.932855][ T5043] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 93.940875][ T5043] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 93.948911][ T5043] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffefa6f5410 [ 93.956906][ T5043] R13: 00007ffefa6f53e0 R14: 0000000000000001 R15: 00007ffefa6f5410 [ 93.964934][ T5043] [ 93.967989][ T5043] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 93.975277][ T5043] CPU: 1 PID: 5043 Comm: syz-executor218 Not tainted 6.5.0-rc6-next-20230815-syzkaller #0 [ 93.985168][ T5043] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 93.995223][ T5043] Call Trace: [ 93.998502][ T5043] [ 94.001438][ T5043] dump_stack_lvl+0xd9/0x1b0 [ 94.006051][ T5043] panic+0x6a6/0x750 [ 94.009978][ T5043] ? panic_smp_self_stop+0xa0/0xa0 [ 94.015111][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 94.020237][ T5043] check_panic_on_warn+0xab/0xb0 [ 94.025197][ T5043] __warn+0xf2/0x380 [ 94.029123][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 94.034275][ T5043] report_bug+0x3bc/0x580 [ 94.038631][ T5043] handle_bug+0x3c/0x70 [ 94.042805][ T5043] exc_invalid_op+0x17/0x40 [ 94.047331][ T5043] asm_exc_invalid_op+0x1a/0x20 [ 94.052216][ T5043] RIP: 0010:skb_checksum_help+0x4b5/0x5c0 [ 94.057948][ T5043] Code: f9 40 84 ed 75 dd e8 3a 16 57 f9 31 d2 48 89 de 48 c7 c7 40 b4 a2 8b c6 05 bb 34 87 06 01 e8 22 27 f8 ff eb be e8 1b 16 57 f9 <0f> 0b 0f b6 2d a5 34 87 06 31 ff 89 ee e8 39 11 57 f9 40 84 ed 75 [ 94.077569][ T5043] RSP: 0018:ffffc900039df0b8 EFLAGS: 00010293 [ 94.083651][ T5043] RAX: 0000000000000000 RBX: ffff888020c51dc0 RCX: 0000000000000000 [ 94.091636][ T5043] RDX: ffff8880293f1dc0 RSI: ffffffff8830c235 RDI: 0000000000000006 [ 94.099627][ T5043] RBP: ffff888020c51e34 R08: 0000000000000006 R09: 0000000000000621 [ 94.108047][ T5043] R10: 0000000000000519 R11: 000820aaaaaaaaaa R12: 000000000000061f [ 94.116035][ T5043] R13: 000000000000061f R14: 0000000000000519 R15: 0000000000000621 [ 94.124030][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 94.129190][ T5043] ? skb_checksum_help+0x4b5/0x5c0 [ 94.134328][ T5043] ip_do_fragment+0xa1b/0x18b0 [ 94.139121][ T5043] ? ip_fragment.constprop.0+0x230/0x230 [ 94.144789][ T5043] ? ip_frag_next+0xa40/0xa40 [ 94.149516][ T5043] ? slab_free_freelist_hook+0x114/0x1e0 [ 94.155389][ T5043] ip_fragment.constprop.0+0x161/0x230 [ 94.160893][ T5043] __ip_finish_output+0x49a/0x640 [ 94.165964][ T5043] ip_finish_output+0x31/0x310 [ 94.170757][ T5043] ip_output+0x198/0x310 [ 94.175121][ T5043] ip_local_out+0xaf/0x190 [ 94.179580][ T5043] iptunnel_xmit+0x61a/0xa30 [ 94.184237][ T5043] ip_tunnel_xmit+0x1e14/0x3350 [ 94.189126][ T5043] ? print_irqtrace_events+0x228/0x270 [ 94.194635][ T5043] ? ip_md_tunnel_xmit+0x1f90/0x1f90 [ 94.199952][ T5043] ? skb_mac_gso_segment+0x3d8/0x610 [ 94.205265][ T5043] ? __gre_xmit+0x4f5/0x990 [ 94.209801][ T5043] ipgre_xmit+0x63c/0x910 [ 94.214165][ T5043] dev_hard_start_xmit+0x13d/0x6c0 [ 94.219320][ T5043] __dev_queue_xmit+0x9be/0x3d60 [ 94.224301][ T5043] ? netdev_core_pick_tx+0x390/0x390 [ 94.229625][ T5043] ? skb_partial_csum_set+0x202/0x390 [ 94.235036][ T5043] ? virtio_net_hdr_to_skb.constprop.0+0x685/0x1230 [ 94.241661][ T5043] ? packet_release+0xdc0/0xdc0 [ 94.246560][ T5043] packet_xmit+0x257/0x380 [ 94.250997][ T5043] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 94.256930][ T5043] packet_sendmsg+0x24c7/0x5570 [ 94.261826][ T5043] ? preempt_count_sub+0x150/0x150 [ 94.266975][ T5043] ? rcu_read_lock_held+0x9/0x40 [ 94.271949][ T5043] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 94.277883][ T5043] ? aa_sk_perm+0x2c1/0xae0 [ 94.282420][ T5043] ? rcu_is_watching+0x12/0xb0 [ 94.287210][ T5043] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 94.293117][ T5043] ? aa_af_perm+0x260/0x260 [ 94.297656][ T5043] ? import_ubuf+0x1f5/0x260 [ 94.302272][ T5043] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 94.307592][ T5043] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 94.313516][ T5043] sock_sendmsg+0xd9/0x180 [ 94.317962][ T5043] ____sys_sendmsg+0x6ac/0x940 [ 94.322745][ T5043] ? copy_msghdr_from_user+0x10b/0x160 [ 94.328237][ T5043] ? kernel_sendmsg+0x50/0x50 [ 94.332942][ T5043] ? finish_task_switch.isra.0+0x216/0xc90 [ 94.338794][ T5043] ? __switch_to+0x73d/0x1340 [ 94.343509][ T5043] ___sys_sendmsg+0x135/0x1d0 [ 94.348218][ T5043] ? do_recvmmsg+0x740/0x740 [ 94.352843][ T5043] ? lock_sync+0x190/0x190 [ 94.357285][ T5043] ? ptrace_stop.part.0+0x4b4/0x8f0 [ 94.362509][ T5043] ? __fget_light+0x1fc/0x260 [ 94.367202][ T5043] __sys_sendmsg+0x117/0x1e0 [ 94.371813][ T5043] ? __sys_sendmsg_sock+0x30/0x30 [ 94.376873][ T5043] ? ptrace_notify+0xf4/0x130 [ 94.381595][ T5043] ? _raw_spin_unlock_irq+0x2e/0x50 [ 94.386831][ T5043] ? ptrace_notify+0xf4/0x130 [ 94.391532][ T5043] do_syscall_64+0x38/0xb0 [ 94.395975][ T5043] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 94.401893][ T5043] RIP: 0033:0x7fc2d2a87499 [ 94.406341][ T5043] Code: 48 83 c4 28 c3 e8 d7 19 00 00 0f 1f 80 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 b8 ff ff ff f7 d8 64 89 01 48 [ 94.425965][ T5043] RSP: 002b:00007ffefa6f53c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.434398][ T5043] RAX: ffffffffffffffda RBX: 00007fc2d2ad4390 RCX: 00007fc2d2a87499 [ 94.442416][ T5043] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 94.450407][ T5043] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 94.458426][ T5043] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffefa6f5410 [ 94.466420][ T5043] R13: 00007ffefa6f53e0 R14: 0000000000000001 R15: 00007ffefa6f5410 [ 94.474420][ T5043] [ 94.477923][ T5043] Kernel Offset: disabled [ 94.482250][ T5043] Rebooting in 86400 seconds..