./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor409820504 <...> Warning: Permanently added '10.128.0.158' (ED25519) to the list of known hosts. execve("./syz-executor409820504", ["./syz-executor409820504"], 0x7ffe26656270 /* 10 vars */) = 0 brk(NULL) = 0x555556d74000 brk(0x555556d74d00) = 0x555556d74d00 arch_prctl(ARCH_SET_FS, 0x555556d74380) = 0 set_tid_address(0x555556d74650) = 5044 set_robust_list(0x555556d74660, 24) = 0 rseq(0x555556d74ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor409820504", 4096) = 27 getrandom("\x0b\x27\xcc\xb6\xdd\xdf\xeb\xbb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d74d00 brk(0x555556d95d00) = 0x555556d95d00 brk(0x555556d96000) = 0x555556d96000 mprotect(0x7fbb02c22000, 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=0x555556d74650) = 5045 ./strace-static-x86_64: Process 5045 attached [pid 5045] set_robust_list(0x555556d74660, 24) = 0 [pid 5045] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5045] setsid() = 1 [pid 5045] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5045] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5045] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5045] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5045] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5045] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5045] unshare(CLONE_NEWNS) = 0 [pid 5045] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5045] unshare(CLONE_NEWIPC) = 0 [pid 5045] unshare(CLONE_NEWCGROUP) = 0 [pid 5045] unshare(CLONE_NEWUTS) = 0 [pid 5045] unshare(CLONE_SYSVSEM) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "16777216", 8) = 8 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "536870912", 9) = 9 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1024", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "8192", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1024", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1024", 4) = 4 [pid 5045] close(3) = 0 [pid 5045] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5045] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5045] close(3) = 0 [pid 5045] getpid() = 1 [pid 5045] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f b6 2d b4 95 85 06 31 ff 89 ee e8 39 23 55 f9 40 84 ed 75 [ 94.459007][ T5045] RSP: 0018:ffffc9000395f0a0 EFLAGS: 00010293 [ 94.465082][ T5045] RAX: 0000000000000000 RBX: ffff888025986500 RCX: 0000000000000000 [ 94.473090][ T5045] RDX: ffff88807c5f1dc0 RSI: ffffffff8832a665 RDI: 0000000000000006 [ 94.481103][ T5045] RBP: ffff888025986574 R08: 0000000000000006 R09: 0000000000000529 [ 94.489116][ T5045] R10: 000000000000007c R11: ffffffff8a60008b R12: 0000000000000527 [ 94.497156][ T5045] R13: 0000000000000527 R14: 000000000000007c R15: 0000000000000529 [ 94.505144][ T5045] FS: 0000555556d74380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 94.514139][ T5045] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.520767][ T5045] CR2: 0000000020001000 CR3: 00000000280ef000 CR4: 00000000003506f0 [ 94.528776][ T5045] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.536798][ T5045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.544778][ T5045] Call Trace: [ 94.548101][ T5045] [ 94.551049][ T5045] ? show_regs+0x8f/0xa0 [ 94.555315][ T5045] ? __warn+0xe6/0x380 [ 94.559429][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 94.564584][ T5045] ? report_bug+0x3bc/0x580 [ 94.569152][ T5045] ? handle_bug+0x3c/0x70 [ 94.573513][ T5045] ? exc_invalid_op+0x17/0x40 [ 94.578228][ T5045] ? asm_exc_invalid_op+0x1a/0x20 [ 94.583287][ T5045] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 94.589420][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 94.594573][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 94.599743][ T5045] ip_do_fragment+0xa1b/0x18b0 [ 94.604560][ T5045] ? ip_fragment.constprop.0+0x230/0x230 [ 94.610266][ T5045] ? ip_frag_next+0xa40/0xa40 [ 94.614994][ T5045] ip_fragment.constprop.0+0x161/0x230 [ 94.620528][ T5045] __ip_finish_output+0x49a/0x640 [ 94.625646][ T5045] ip_finish_output+0x31/0x310 [ 94.630474][ T5045] ip_mc_output+0x1dd/0x6a0 [ 94.635031][ T5045] ip_local_out+0xaf/0x190 [ 94.639518][ T5045] iptunnel_xmit+0x61a/0x9e0 [ 94.644167][ T5045] ip_tunnel_xmit+0x1e14/0x3350 [ 94.649069][ T5045] ? print_irqtrace_events+0x1d8/0x270 [ 94.654578][ T5045] ? ip_md_tunnel_xmit+0x1f90/0x1f90 [ 94.659931][ T5045] ? skb_mac_gso_segment+0x3d8/0x610 [ 94.665354][ T5045] ? __gre_xmit+0x4f5/0x990 [ 94.669905][ T5045] ipgre_xmit+0x63c/0x910 [ 94.674267][ T5045] dev_hard_start_xmit+0x13d/0x6c0 [ 94.679438][ T5045] __dev_queue_xmit+0x9be/0x3d80 [ 94.684430][ T5045] ? netdev_core_pick_tx+0x390/0x390 [ 94.689771][ T5045] ? skb_partial_csum_set+0x202/0x390 [ 94.695377][ T5045] ? virtio_net_hdr_to_skb.constprop.0+0x4d9/0x11e0 [ 94.702026][ T5045] ? packet_release+0xdc0/0xdc0 [ 94.706953][ T5045] packet_xmit+0x257/0x380 [ 94.711411][ T5045] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 94.717369][ T5045] packet_sendmsg+0x24d9/0x5580 [ 94.722262][ T5045] ? print_irqtrace_events+0x1d0/0x270 [ 94.727808][ T5045] ? preempt_count_sub+0x150/0x150 [ 94.732970][ T5045] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 94.738929][ T5045] ? aa_sk_perm+0x2c1/0xae0 [ 94.743473][ T5045] ? rcu_is_watching+0x12/0xb0 [ 94.748300][ T5045] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 94.754330][ T5045] ? aa_af_perm+0x260/0x260 [ 94.758904][ T5045] ? import_ubuf+0x1f5/0x260 [ 94.763553][ T5045] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 94.768907][ T5045] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 94.774843][ T5045] sock_sendmsg+0xd9/0x180 [ 94.779339][ T5045] ____sys_sendmsg+0x6ac/0x940 [ 94.784169][ T5045] ? copy_msghdr_from_user+0x10b/0x160 [ 94.789707][ T5045] ? kernel_sendmsg+0x50/0x50 [ 94.794454][ T5045] ? finish_task_switch.isra.0+0x216/0xc90 [ 94.800422][ T5045] ? __switch_to+0x73d/0x1340 [ 94.805143][ T5045] ___sys_sendmsg+0x135/0x1d0 [ 94.809890][ T5045] ? do_recvmmsg+0x740/0x740 [ 94.814519][ T5045] ? lock_sync+0x190/0x190 [ 94.819008][ T5045] ? ptrace_stop.part.0+0x4b4/0x8f0 [ 94.824256][ T5045] ? __fget_light+0x1fc/0x260 [ 94.828996][ T5045] __sys_sendmsg+0x117/0x1e0 [ 94.833628][ T5045] ? __sys_sendmsg_sock+0x30/0x30 [ 94.838714][ T5045] ? ptrace_notify+0xf4/0x130 [ 94.843433][ T5045] ? _raw_spin_unlock_irq+0x2e/0x50 [ 94.848697][ T5045] ? ptrace_notify+0xf4/0x130 [ 94.853413][ T5045] do_syscall_64+0x38/0xb0 [ 94.857926][ T5045] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 94.863888][ T5045] RIP: 0033:0x7fbb02baa4d9 [ 94.868371][ T5045] 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 [ 94.888056][ T5045] RSP: 002b:00007ffcea83e5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.896547][ T5045] RAX: ffffffffffffffda RBX: 00007fbb02bf7390 RCX: 00007fbb02baa4d9 [ 94.904551][ T5045] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 94.912669][ T5045] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 94.920762][ T5045] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcea83e640 [ 94.928786][ T5045] R13: 00007ffcea83e610 R14: 0000000000000001 R15: 00007ffcea83e640 [ 94.936844][ T5045] [ 94.939882][ T5045] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 94.947172][ T5045] CPU: 0 PID: 5045 Comm: syz-executor409 Not tainted 6.6.0-rc1-syzkaller-00170-g802496c9b846 #0 [ 94.957589][ T5045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 94.967743][ T5045] Call Trace: [ 94.971027][ T5045] [ 94.973963][ T5045] dump_stack_lvl+0xd9/0x1b0 [ 94.978595][ T5045] panic+0x6a6/0x750 [ 94.982522][ T5045] ? panic_smp_self_stop+0xa0/0xa0 [ 94.987746][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 94.992876][ T5045] check_panic_on_warn+0xab/0xb0 [ 94.997833][ T5045] __warn+0xf2/0x380 [ 95.001758][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 95.006913][ T5045] report_bug+0x3bc/0x580 [ 95.011271][ T5045] handle_bug+0x3c/0x70 [ 95.015432][ T5045] exc_invalid_op+0x17/0x40 [ 95.019956][ T5045] asm_exc_invalid_op+0x1a/0x20 [ 95.024816][ T5045] RIP: 0010:skb_checksum_help+0x4b5/0x5c0 [ 95.030562][ T5045] Code: f9 40 84 ed 75 dd e8 3a 28 55 f9 31 d2 48 89 de 48 c7 c7 80 05 a3 8b c6 05 ca 95 85 06 01 e8 02 1d f8 ff eb be e8 1b 28 55 f9 <0f> 0b 0f b6 2d b4 95 85 06 31 ff 89 ee e8 39 23 55 f9 40 84 ed 75 [ 95.050354][ T5045] RSP: 0018:ffffc9000395f0a0 EFLAGS: 00010293 [ 95.056439][ T5045] RAX: 0000000000000000 RBX: ffff888025986500 RCX: 0000000000000000 [ 95.064429][ T5045] RDX: ffff88807c5f1dc0 RSI: ffffffff8832a665 RDI: 0000000000000006 [ 95.072420][ T5045] RBP: ffff888025986574 R08: 0000000000000006 R09: 0000000000000529 [ 95.080408][ T5045] R10: 000000000000007c R11: ffffffff8a60008b R12: 0000000000000527 [ 95.088391][ T5045] R13: 0000000000000527 R14: 000000000000007c R15: 0000000000000529 [ 95.096379][ T5045] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 95.102471][ T5045] ? skb_checksum_help+0x4b5/0x5c0 [ 95.107638][ T5045] ip_do_fragment+0xa1b/0x18b0 [ 95.112436][ T5045] ? ip_fragment.constprop.0+0x230/0x230 [ 95.118106][ T5045] ? ip_frag_next+0xa40/0xa40 [ 95.122824][ T5045] ip_fragment.constprop.0+0x161/0x230 [ 95.128315][ T5045] __ip_finish_output+0x49a/0x640 [ 95.133379][ T5045] ip_finish_output+0x31/0x310 [ 95.138176][ T5045] ip_mc_output+0x1dd/0x6a0 [ 95.142712][ T5045] ip_local_out+0xaf/0x190 [ 95.147160][ T5045] iptunnel_xmit+0x61a/0x9e0 [ 95.151786][ T5045] ip_tunnel_xmit+0x1e14/0x3350 [ 95.156657][ T5045] ? print_irqtrace_events+0x1d8/0x270 [ 95.162150][ T5045] ? ip_md_tunnel_xmit+0x1f90/0x1f90 [ 95.167458][ T5045] ? skb_mac_gso_segment+0x3d8/0x610 [ 95.172772][ T5045] ? __gre_xmit+0x4f5/0x990 [ 95.177292][ T5045] ipgre_xmit+0x63c/0x910 [ 95.181639][ T5045] dev_hard_start_xmit+0x13d/0x6c0 [ 95.186783][ T5045] __dev_queue_xmit+0x9be/0x3d80 [ 95.191771][ T5045] ? netdev_core_pick_tx+0x390/0x390 [ 95.197087][ T5045] ? skb_partial_csum_set+0x202/0x390 [ 95.202831][ T5045] ? virtio_net_hdr_to_skb.constprop.0+0x4d9/0x11e0 [ 95.209446][ T5045] ? packet_release+0xdc0/0xdc0 [ 95.214326][ T5045] packet_xmit+0x257/0x380 [ 95.218767][ T5045] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 95.224696][ T5045] packet_sendmsg+0x24d9/0x5580 [ 95.229930][ T5045] ? print_irqtrace_events+0x1d0/0x270 [ 95.235415][ T5045] ? preempt_count_sub+0x150/0x150 [ 95.240564][ T5045] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 95.246495][ T5045] ? aa_sk_perm+0x2c1/0xae0 [ 95.251023][ T5045] ? rcu_is_watching+0x12/0xb0 [ 95.255799][ T5045] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 95.261716][ T5045] ? aa_af_perm+0x260/0x260 [ 95.266237][ T5045] ? import_ubuf+0x1f5/0x260 [ 95.270858][ T5045] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 95.276177][ T5045] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 95.282109][ T5045] sock_sendmsg+0xd9/0x180 [ 95.286577][ T5045] ____sys_sendmsg+0x6ac/0x940 [ 95.291371][ T5045] ? copy_msghdr_from_user+0x10b/0x160 [ 95.296845][ T5045] ? kernel_sendmsg+0x50/0x50 [ 95.301548][ T5045] ? finish_task_switch.isra.0+0x216/0xc90 [ 95.307376][ T5045] ? __switch_to+0x73d/0x1340 [ 95.312076][ T5045] ___sys_sendmsg+0x135/0x1d0 [ 95.316762][ T5045] ? do_recvmmsg+0x740/0x740 [ 95.321370][ T5045] ? lock_sync+0x190/0x190 [ 95.325806][ T5045] ? ptrace_stop.part.0+0x4b4/0x8f0 [ 95.331027][ T5045] ? __fget_light+0x1fc/0x260 [ 95.335736][ T5045] __sys_sendmsg+0x117/0x1e0 [ 95.340342][ T5045] ? __sys_sendmsg_sock+0x30/0x30 [ 95.345377][ T5045] ? ptrace_notify+0xf4/0x130 [ 95.350078][ T5045] ? _raw_spin_unlock_irq+0x2e/0x50 [ 95.355304][ T5045] ? ptrace_notify+0xf4/0x130 [ 95.360001][ T5045] do_syscall_64+0x38/0xb0 [ 95.364431][ T5045] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 95.370341][ T5045] RIP: 0033:0x7fbb02baa4d9 [ 95.374771][ T5045] 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 [ 95.394391][ T5045] RSP: 002b:00007ffcea83e5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.402816][ T5045] RAX: ffffffffffffffda RBX: 00007fbb02bf7390 RCX: 00007fbb02baa4d9 [ 95.410799][ T5045] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 95.418780][ T5045] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 95.426763][ T5045] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcea83e640 [ 95.434753][ T5045] R13: 00007ffcea83e610 R14: 0000000000000001 R15: 00007ffcea83e640 [ 95.442744][ T5045] [ 95.446084][ T5045] Kernel Offset: disabled [ 95.450418][ T5045] Rebooting in 86400 seconds..