./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3704190744 <...> Warning: Permanently added '10.128.1.142' (ED25519) to the list of known hosts. execve("./syz-executor3704190744", ["./syz-executor3704190744"], 0x7ffeaa6200a0 /* 10 vars */) = 0 brk(NULL) = 0x555555773000 brk(0x555555773d00) = 0x555555773d00 arch_prctl(ARCH_SET_FS, 0x555555773380) = 0 set_tid_address(0x555555773650) = 5062 set_robust_list(0x555555773660, 24) = 0 rseq(0x555555773ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3704190744", 4096) = 28 getrandom("\xe6\x34\x7e\x9d\x0b\x0e\x8e\x3a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555773d00 brk(0x555555794d00) = 0x555555794d00 brk(0x555555795000) = 0x555555795000 mprotect(0x7f780e46e000, 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./strace-static-x86_64: Process 5063 attached , child_tidptr=0x555555773650) = 5063 [pid 5063] set_robust_list(0x555555773660, 24) = 0 [pid 5063] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5063] setsid() = 1 [pid 5063] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5063] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5063] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5063] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5063] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5063] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5063] unshare(CLONE_NEWNS) = 0 [pid 5063] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5063] unshare(CLONE_NEWIPC) = 0 [pid 5063] unshare(CLONE_NEWCGROUP) = 0 [pid 5063] unshare(CLONE_NEWUTS) = 0 [pid 5063] unshare(CLONE_SYSVSEM) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "16777216", 8) = 8 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "536870912", 9) = 9 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1024", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "8192", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1024", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1024", 4) = 4 [pid 5063] close(3) = 0 [pid 5063] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5063] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5063] close(3) = 0 [pid 5063] getpid() = 1 [pid 5063] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (100) [ 80.997140][ T5063] WARNING: CPU: 0 PID: 5063 at net/core/dev.c:3302 skb_checksum_help+0x5e2/0x740 [ 81.006390][ T5063] Modules linked in: [ 81.010267][ T5063] CPU: 0 PID: 5063 Comm: syz-executor370 Not tainted 6.7.0-syzkaller-12283-g16c595a53c5f #0 [ 81.020359][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 81.030455][ T5063] RIP: 0010:skb_checksum_help+0x5e2/0x740 [ 81.036235][ T5063] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 a0 5c ea 8b e8 0f da d3 f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 10 af 65 f9 e9 4b fa ff ff 48 89 ef [ 81.055881][ T5063] RSP: 0018:ffffc90003acf088 EFLAGS: 00010286 [ 81.061934][ T5063] RAX: 0000000000000000 RBX: ffff88801f2b2dc0 RCX: ffffffff814e18f9 [ 81.069935][ T5063] RDX: ffff888027be3b80 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 81.077934][ T5063] RBP: ffff88801f2b2e34 R08: 0000000000000001 R09: 0000000000000000 [ 81.085959][ T5063] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000080 [ 81.093938][ T5063] R13: 000000000000a829 R14: ffff88801f2b2e30 R15: 000000000000a827 [ 81.101942][ T5063] FS: 0000555555773380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 81.110934][ T5063] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.117584][ T5063] CR2: 000000002000d000 CR3: 0000000023bdc000 CR4: 00000000003506f0 [ 81.125608][ T5063] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.133581][ T5063] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.141583][ T5063] Call Trace: [ 81.144866][ T5063] [ 81.147830][ T5063] ? show_regs+0x8f/0xa0 [ 81.152099][ T5063] ? __warn+0xe6/0x390 [ 81.156206][ T5063] ? skb_checksum_help+0x5e2/0x740 [ 81.161341][ T5063] ? report_bug+0x3bc/0x580 [ 81.165922][ T5063] ? handle_bug+0x3d/0x70 [ 81.170289][ T5063] ? exc_invalid_op+0x17/0x40 [ 81.174966][ T5063] ? asm_exc_invalid_op+0x1a/0x20 [ 81.180046][ T5063] ? __warn_printk+0x199/0x350 [ 81.184823][ T5063] ? __warn_printk+0x1a6/0x350 [ 81.189623][ T5063] ? skb_checksum_help+0x5e2/0x740 [ 81.194751][ T5063] ? skb_checksum_help+0x5e1/0x740 [ 81.199913][ T5063] ip_do_fragment+0xa15/0x18a0 [ 81.204696][ T5063] ? ip_fragment.constprop.0+0x230/0x230 [ 81.210382][ T5063] ? ip_skb_dst_mtu+0xc60/0xc60 [ 81.215247][ T5063] ? kfree_skbmem+0xef/0x1b0 [ 81.219868][ T5063] ? __kasan_slab_free+0x12c/0x1b0 [ 81.224993][ T5063] ? kmem_cache_free+0x129/0x350 [ 81.229967][ T5063] ? skb_release_data+0x5bf/0x870 [ 81.234999][ T5063] ? kfree_skbmem+0xef/0x1b0 [ 81.239654][ T5063] ip_fragment.constprop.0+0x161/0x230 [ 81.245145][ T5063] __ip_finish_output+0x49c/0x650 [ 81.250455][ T5063] ip_finish_output+0x31/0x310 [ 81.255244][ T5063] ip_mc_output+0x1dd/0x6a0 [ 81.259814][ T5063] ? __get_random_u32_below+0x4e/0xa0 [ 81.265211][ T5063] ip_local_out+0xaf/0x1a0 [ 81.269676][ T5063] iptunnel_xmit+0x5b4/0x9b0 [ 81.274283][ T5063] ip_tunnel_xmit+0x1daa/0x33b0 [ 81.279217][ T5063] ? reacquire_held_locks+0x410/0x4c0 [ 81.284605][ T5063] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 81.289949][ T5063] ? __gre_xmit+0x4f5/0x990 [ 81.294471][ T5063] ipgre_xmit+0x49b/0x980 [ 81.298852][ T5063] dev_hard_start_xmit+0x137/0x6d0 [ 81.303987][ T5063] __dev_queue_xmit+0x7b6/0x3ed0 [ 81.308981][ T5063] ? _copy_from_iter+0x2c1/0x10f0 [ 81.314019][ T5063] ? netdev_core_pick_tx+0x370/0x370 [ 81.319371][ T5063] ? skb_partial_csum_set+0x202/0x390 [ 81.324765][ T5063] ? virtio_net_hdr_to_skb.constprop.0+0x4ed/0x1300 [ 81.331519][ T5063] ? packet_create+0x8e0/0x8e0 [ 81.336331][ T5063] packet_xmit+0x237/0x350 [ 81.340737][ T5063] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.346683][ T5063] packet_sendmsg+0x24a6/0x51e0 [ 81.351552][ T5063] ? preempt_count_sub+0x160/0x160 [ 81.356705][ T5063] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.362619][ T5063] ? aa_sk_perm+0x2f8/0xb40 [ 81.367187][ T5063] ? packet_notifier+0x8c0/0x8c0 [ 81.372143][ T5063] ? aa_af_perm+0x250/0x250 [ 81.376709][ T5063] ? import_ubuf+0x1a4/0x200 [ 81.381317][ T5063] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.386646][ T5063] ? packet_notifier+0x8c0/0x8c0 [ 81.391597][ T5063] __sock_sendmsg+0xd5/0x180 [ 81.396232][ T5063] ____sys_sendmsg+0x6ac/0x940 [ 81.401024][ T5063] ? copy_msghdr_from_user+0x10b/0x160 [ 81.406536][ T5063] ? kernel_sendmsg+0x50/0x50 [ 81.411247][ T5063] ___sys_sendmsg+0x135/0x1d0 [ 81.415970][ T5063] ? do_recvmmsg+0x740/0x740 [ 81.420582][ T5063] ? lock_sync+0x190/0x190 [ 81.424985][ T5063] ? ptrace_stop.part.0+0x457/0x950 [ 81.430240][ T5063] ? __fget_light+0x173/0x200 [ 81.434940][ T5063] __sys_sendmsg+0x117/0x1e0 [ 81.439588][ T5063] ? __sys_sendmsg_sock+0x30/0x30 [ 81.444631][ T5063] ? ptrace_notify+0xf4/0x130 [ 81.449378][ T5063] ? lockdep_hardirqs_on+0x7d/0x110 [ 81.454600][ T5063] ? _raw_spin_unlock_irq+0x2e/0x50 [ 81.459839][ T5063] ? ptrace_notify+0xf4/0x130 [ 81.464539][ T5063] do_syscall_64+0xd3/0x250 [ 81.469088][ T5063] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 81.474994][ T5063] RIP: 0033:0x7f780e3f64d9 [ 81.479448][ T5063] 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 [ 81.499098][ T5063] RSP: 002b:00007ffd7cfc5ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.507561][ T5063] RAX: ffffffffffffffda RBX: 00007f780e443390 RCX: 00007f780e3f64d9 [ 81.515593][ T5063] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 81.523581][ T5063] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 81.531611][ T5063] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd7cfc5b30 [ 81.539631][ T5063] R13: 00007ffd7cfc5b00 R14: 0000000000000001 R15: 00007ffd7cfc5b30 [ 81.547642][ T5063] [ 81.550649][ T5063] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 81.557912][ T5063] CPU: 0 PID: 5063 Comm: syz-executor370 Not tainted 6.7.0-syzkaller-12283-g16c595a53c5f #0 [ 81.567960][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 81.578001][ T5063] Call Trace: [ 81.581267][ T5063] [ 81.584186][ T5063] dump_stack_lvl+0xd9/0x1b0 [ 81.588771][ T5063] panic+0x6dc/0x790 [ 81.592658][ T5063] ? panic_smp_self_stop+0xa0/0xa0 [ 81.597761][ T5063] ? show_trace_log_lvl+0x363/0x4f0 [ 81.602963][ T5063] ? check_panic_on_warn+0x1f/0xb0 [ 81.608072][ T5063] ? skb_checksum_help+0x5e2/0x740 [ 81.613184][ T5063] check_panic_on_warn+0xab/0xb0 [ 81.618117][ T5063] __warn+0xf2/0x390 [ 81.622017][ T5063] ? skb_checksum_help+0x5e2/0x740 [ 81.627123][ T5063] report_bug+0x3bc/0x580 [ 81.631443][ T5063] handle_bug+0x3d/0x70 [ 81.635594][ T5063] exc_invalid_op+0x17/0x40 [ 81.640087][ T5063] asm_exc_invalid_op+0x1a/0x20 [ 81.644921][ T5063] RIP: 0010:skb_checksum_help+0x5e2/0x740 [ 81.650674][ T5063] Code: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 a0 5c ea 8b e8 0f da d3 f8 90 <0f> 0b 90 90 e9 87 fe ff ff e8 10 af 65 f9 e9 4b fa ff ff 48 89 ef [ 81.670278][ T5063] RSP: 0018:ffffc90003acf088 EFLAGS: 00010286 [ 81.676345][ T5063] RAX: 0000000000000000 RBX: ffff88801f2b2dc0 RCX: ffffffff814e18f9 [ 81.684316][ T5063] RDX: ffff888027be3b80 RSI: ffffffff814e1906 RDI: 0000000000000001 [ 81.692285][ T5063] RBP: ffff88801f2b2e34 R08: 0000000000000001 R09: 0000000000000000 [ 81.700253][ T5063] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000080 [ 81.708221][ T5063] R13: 000000000000a829 R14: ffff88801f2b2e30 R15: 000000000000a827 [ 81.716200][ T5063] ? __warn_printk+0x199/0x350 [ 81.720972][ T5063] ? __warn_printk+0x1a6/0x350 [ 81.725744][ T5063] ? skb_checksum_help+0x5e1/0x740 [ 81.730871][ T5063] ip_do_fragment+0xa15/0x18a0 [ 81.735638][ T5063] ? ip_fragment.constprop.0+0x230/0x230 [ 81.741281][ T5063] ? ip_skb_dst_mtu+0xc60/0xc60 [ 81.746134][ T5063] ? kfree_skbmem+0xef/0x1b0 [ 81.750720][ T5063] ? __kasan_slab_free+0x12c/0x1b0 [ 81.755841][ T5063] ? kmem_cache_free+0x129/0x350 [ 81.760786][ T5063] ? skb_release_data+0x5bf/0x870 [ 81.765807][ T5063] ? kfree_skbmem+0xef/0x1b0 [ 81.770402][ T5063] ip_fragment.constprop.0+0x161/0x230 [ 81.775955][ T5063] __ip_finish_output+0x49c/0x650 [ 81.781002][ T5063] ip_finish_output+0x31/0x310 [ 81.785769][ T5063] ip_mc_output+0x1dd/0x6a0 [ 81.790273][ T5063] ? __get_random_u32_below+0x4e/0xa0 [ 81.795662][ T5063] ip_local_out+0xaf/0x1a0 [ 81.800081][ T5063] iptunnel_xmit+0x5b4/0x9b0 [ 81.804687][ T5063] ip_tunnel_xmit+0x1daa/0x33b0 [ 81.809561][ T5063] ? reacquire_held_locks+0x410/0x4c0 [ 81.814944][ T5063] ? ip_md_tunnel_xmit+0x1ff0/0x1ff0 [ 81.820275][ T5063] ? __gre_xmit+0x4f5/0x990 [ 81.824799][ T5063] ipgre_xmit+0x49b/0x980 [ 81.829142][ T5063] dev_hard_start_xmit+0x137/0x6d0 [ 81.834266][ T5063] __dev_queue_xmit+0x7b6/0x3ed0 [ 81.839221][ T5063] ? _copy_from_iter+0x2c1/0x10f0 [ 81.844419][ T5063] ? netdev_core_pick_tx+0x370/0x370 [ 81.849715][ T5063] ? skb_partial_csum_set+0x202/0x390 [ 81.855097][ T5063] ? virtio_net_hdr_to_skb.constprop.0+0x4ed/0x1300 [ 81.861702][ T5063] ? packet_create+0x8e0/0x8e0 [ 81.866480][ T5063] packet_xmit+0x237/0x350 [ 81.870891][ T5063] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.876795][ T5063] packet_sendmsg+0x24a6/0x51e0 [ 81.881657][ T5063] ? preempt_count_sub+0x160/0x160 [ 81.886768][ T5063] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 81.892667][ T5063] ? aa_sk_perm+0x2f8/0xb40 [ 81.897176][ T5063] ? packet_notifier+0x8c0/0x8c0 [ 81.902110][ T5063] ? aa_af_perm+0x250/0x250 [ 81.906614][ T5063] ? import_ubuf+0x1a4/0x200 [ 81.911207][ T5063] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 81.916500][ T5063] ? packet_notifier+0x8c0/0x8c0 [ 81.921435][ T5063] __sock_sendmsg+0xd5/0x180 [ 81.926035][ T5063] ____sys_sendmsg+0x6ac/0x940 [ 81.930806][ T5063] ? copy_msghdr_from_user+0x10b/0x160 [ 81.936268][ T5063] ? kernel_sendmsg+0x50/0x50 [ 81.940966][ T5063] ___sys_sendmsg+0x135/0x1d0 [ 81.945644][ T5063] ? do_recvmmsg+0x740/0x740 [ 81.950243][ T5063] ? lock_sync+0x190/0x190 [ 81.954659][ T5063] ? ptrace_stop.part.0+0x457/0x950 [ 81.959876][ T5063] ? __fget_light+0x173/0x200 [ 81.964562][ T5063] __sys_sendmsg+0x117/0x1e0 [ 81.969153][ T5063] ? __sys_sendmsg_sock+0x30/0x30 [ 81.974176][ T5063] ? ptrace_notify+0xf4/0x130 [ 81.978864][ T5063] ? lockdep_hardirqs_on+0x7d/0x110 [ 81.984073][ T5063] ? _raw_spin_unlock_irq+0x2e/0x50 [ 81.989272][ T5063] ? ptrace_notify+0xf4/0x130 [ 81.993956][ T5063] do_syscall_64+0xd3/0x250 [ 81.998466][ T5063] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 82.004358][ T5063] RIP: 0033:0x7f780e3f64d9 [ 82.008774][ T5063] 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 [ 82.028387][ T5063] RSP: 002b:00007ffd7cfc5ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.036803][ T5063] RAX: ffffffffffffffda RBX: 00007f780e443390 RCX: 00007f780e3f64d9 [ 82.044776][ T5063] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 82.052744][ T5063] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 82.060713][ T5063] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffd7cfc5b30 [ 82.068684][ T5063] R13: 00007ffd7cfc5b00 R14: 0000000000000001 R15: 00007ffd7cfc5b30 [ 82.076669][ T5063] [ 82.079880][ T5063] Kernel Offset: disabled [ 82.084256][ T5063] Rebooting in 86400 seconds..