./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3819095940 <...> DUID 00:04:ab:86:5b:51:31:5e:ac:a3:74:55:84:ab:cd:90:ff:3d forked to background, child pid 4670 [ 33.418536][ T4671] 8021q: adding VLAN 0 to HW filter on device bond0 [ 33.429713][ T4671] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. execve("./syz-executor3819095940", ["./syz-executor3819095940"], 0x7fff9c320d40 /* 10 vars */) = 0 brk(NULL) = 0x555555ca4000 brk(0x555555ca4c40) = 0x555555ca4c40 arch_prctl(ARCH_SET_FS, 0x555555ca4300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3819095940", 4096) = 28 brk(0x555555cc5c40) = 0x555555cc5c40 brk(0x555555cc6000) = 0x555555cc6000 mprotect(0x7fe3e6b86000, 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 5002 attached , child_tidptr=0x555555ca45d0) = 5002 [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 5b 5d 41 5c 41 5d 41 5e e9 c8 15 75 f9 e8 c3 15 75 f9 48 89 [ 59.224464][ T5002] RSP: 0018:ffffc9000394f6b0 EFLAGS: 00010286 [ 59.230536][ T5002] RAX: 0000000000000000 RBX: ffff888018f0a000 RCX: 0000000000000000 [ 59.238550][ T5002] RDX: ffff88802c939dc0 RSI: ffffffff814bd247 RDI: 0000000000000001 [ 59.246593][ T5002] RBP: ffff88802c9ac000 R08: 0000000000000001 R09: 0000000000000000 [ 59.254655][ T5002] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802c9ac0f0 [ 59.262685][ T5002] R13: ffff888018f0a370 R14: ffff88802c9ac000 R15: 000000000000000e [ 59.270685][ T5002] FS: 0000555555ca4300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 59.279689][ T5002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.286328][ T5002] CR2: 0000000020001000 CR3: 00000000721bf000 CR4: 00000000003506f0 [ 59.294346][ T5002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.302363][ T5002] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.310324][ T5002] Call Trace: [ 59.313669][ T5002] [ 59.316617][ T5002] __skb_gso_segment+0x3eb/0x6e0 [ 59.321555][ T5002] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 59.327599][ T5002] validate_xmit_skb+0x69c/0xef0 [ 59.332617][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.337861][ T5002] validate_xmit_skb_list+0xc0/0x130 [ 59.343246][ T5002] sch_direct_xmit+0x3d5/0xc30 [ 59.348052][ T5002] ? lock_sync+0x190/0x190 [ 59.352541][ T5002] ? rcu_is_watching+0x12/0xb0 [ 59.357338][ T5002] ? netif_carrier_on+0x110/0x110 [ 59.362443][ T5002] ? lock_acquire+0x32/0xc0 [ 59.366976][ T5002] ? __dev_queue_xmit+0x12ae/0x3c10 [ 59.372188][ T5002] __dev_queue_xmit+0x14d6/0x3c10 [ 59.377307][ T5002] ? netdev_core_pick_tx+0x390/0x390 [ 59.382702][ T5002] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 59.389338][ T5002] ? packet_rcv_spkt+0x620/0x620 [ 59.394347][ T5002] packet_xmit+0x260/0x390 [ 59.398785][ T5002] packet_sendmsg+0x347f/0x5030 [ 59.403708][ T5002] ? aa_sk_perm+0x31d/0xb10 [ 59.408222][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.414194][ T5002] ? aa_af_perm+0x240/0x240 [ 59.418730][ T5002] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.424086][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.430013][ T5002] sock_sendmsg+0xde/0x190 [ 59.434491][ T5002] __sys_sendto+0x23a/0x340 [ 59.439025][ T5002] ? __ia32_sys_getpeername+0xb0/0xb0 [ 59.444485][ T5002] ? do_raw_spin_lock+0x124/0x2b0 [ 59.449711][ T5002] ? lock_acquire+0x32/0xc0 [ 59.454263][ T5002] ? ptrace_stop.part.0+0x4e3/0x8e0 [ 59.459488][ T5002] ? ptrace_notify+0xfe/0x140 [ 59.464225][ T5002] ? lock_downgrade+0x690/0x690 [ 59.469109][ T5002] ? _raw_spin_unlock_irq+0x23/0x50 [ 59.474545][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.479776][ T5002] __x64_sys_sendto+0xe1/0x1b0 [ 59.484607][ T5002] ? syscall_trace_enter.constprop.0+0xb0/0x1e0 [ 59.490867][ T5002] do_syscall_64+0x39/0xb0 [ 59.495361][ T5002] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.501294][ T5002] RIP: 0033:0x7fe3e6b12529 [ 59.505786][ 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 [ 59.525458][ T5002] RSP: 002b:00007ffd15d876b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 59.533946][ T5002] RAX: ffffffffffffffda RBX: 00007ffd15d876d8 RCX: 00007fe3e6b12529 [ 59.541943][ T5002] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 59.549973][ T5002] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 59.557992][ T5002] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffd15d876e0 [ 59.566004][ T5002] R13: 00007ffd15d87700 R14: 0000000000000000 R15: 0000000000000000 [ 59.574186][ T5002] [ 59.577238][ T5002] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 59.584514][ T5002] CPU: 0 PID: 5002 Comm: syz-executor381 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 59.594400][ T5002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 59.604443][ T5002] Call Trace: [ 59.607710][ T5002] [ 59.610627][ T5002] dump_stack_lvl+0xd9/0x150 [ 59.615224][ T5002] panic+0x686/0x730 [ 59.619121][ T5002] ? panic_smp_self_stop+0xa0/0xa0 [ 59.624225][ T5002] ? show_trace_log_lvl+0x285/0x390 [ 59.629426][ T5002] ? skb_warn_bad_offload+0x119/0x230 [ 59.634793][ T5002] check_panic_on_warn+0xb1/0xc0 [ 59.639728][ T5002] __warn+0xf2/0x390 [ 59.643620][ T5002] ? skb_warn_bad_offload+0x119/0x230 [ 59.648985][ T5002] report_bug+0x2da/0x500 [ 59.653314][ T5002] handle_bug+0x3c/0x70 [ 59.657472][ T5002] exc_invalid_op+0x18/0x50 [ 59.661963][ T5002] asm_exc_invalid_op+0x1a/0x20 [ 59.666807][ T5002] RIP: 0010:skb_warn_bad_offload+0x119/0x230 [ 59.672781][ T5002] Code: 70 03 00 00 e8 f8 15 75 f9 4c 8d a5 f0 00 00 00 e8 ec 15 75 f9 4c 89 e9 4c 89 e2 4c 89 f6 48 c7 c7 e0 99 5e 8b e8 e7 c2 3c f9 <0f> 0b 5b 5d 41 5c 41 5d 41 5e e9 c8 15 75 f9 e8 c3 15 75 f9 48 89 [ 59.692387][ T5002] RSP: 0018:ffffc9000394f6b0 EFLAGS: 00010286 [ 59.698458][ T5002] RAX: 0000000000000000 RBX: ffff888018f0a000 RCX: 0000000000000000 [ 59.706430][ T5002] RDX: ffff88802c939dc0 RSI: ffffffff814bd247 RDI: 0000000000000001 [ 59.714404][ T5002] RBP: ffff88802c9ac000 R08: 0000000000000001 R09: 0000000000000000 [ 59.722387][ T5002] R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802c9ac0f0 [ 59.730380][ T5002] R13: ffff888018f0a370 R14: ffff88802c9ac000 R15: 000000000000000e [ 59.738377][ T5002] ? __warn_printk+0x187/0x310 [ 59.743345][ T5002] __skb_gso_segment+0x3eb/0x6e0 [ 59.748298][ T5002] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 59.754292][ T5002] validate_xmit_skb+0x69c/0xef0 [ 59.759249][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.764456][ T5002] validate_xmit_skb_list+0xc0/0x130 [ 59.769843][ T5002] sch_direct_xmit+0x3d5/0xc30 [ 59.774634][ T5002] ? lock_sync+0x190/0x190 [ 59.779060][ T5002] ? rcu_is_watching+0x12/0xb0 [ 59.783829][ T5002] ? netif_carrier_on+0x110/0x110 [ 59.788868][ T5002] ? lock_acquire+0x32/0xc0 [ 59.793383][ T5002] ? __dev_queue_xmit+0x12ae/0x3c10 [ 59.798608][ T5002] __dev_queue_xmit+0x14d6/0x3c10 [ 59.803714][ T5002] ? netdev_core_pick_tx+0x390/0x390 [ 59.809110][ T5002] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 59.815710][ T5002] ? packet_rcv_spkt+0x620/0x620 [ 59.820662][ T5002] packet_xmit+0x260/0x390 [ 59.825088][ T5002] packet_sendmsg+0x347f/0x5030 [ 59.829966][ T5002] ? aa_sk_perm+0x31d/0xb10 [ 59.834482][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.840380][ T5002] ? aa_af_perm+0x240/0x240 [ 59.844907][ T5002] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 59.850203][ T5002] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 59.856105][ T5002] sock_sendmsg+0xde/0x190 [ 59.860538][ T5002] __sys_sendto+0x23a/0x340 [ 59.865063][ T5002] ? __ia32_sys_getpeername+0xb0/0xb0 [ 59.870448][ T5002] ? do_raw_spin_lock+0x124/0x2b0 [ 59.875492][ T5002] ? lock_acquire+0x32/0xc0 [ 59.880014][ T5002] ? ptrace_stop.part.0+0x4e3/0x8e0 [ 59.885235][ T5002] ? ptrace_notify+0xfe/0x140 [ 59.889927][ T5002] ? lock_downgrade+0x690/0x690 [ 59.894796][ T5002] ? _raw_spin_unlock_irq+0x23/0x50 [ 59.900008][ T5002] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.905218][ T5002] __x64_sys_sendto+0xe1/0x1b0 [ 59.909999][ T5002] ? syscall_trace_enter.constprop.0+0xb0/0x1e0 [ 59.916248][ T5002] do_syscall_64+0x39/0xb0 [ 59.920766][ T5002] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.926672][ T5002] RIP: 0033:0x7fe3e6b12529 [ 59.931089][ 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 [ 59.950704][ T5002] RSP: 002b:00007ffd15d876b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 59.959125][ T5002] RAX: ffffffffffffffda RBX: 00007ffd15d876d8 RCX: 00007fe3e6b12529 [ 59.967100][ T5002] RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003 [ 59.975075][ T5002] RBP: 0000000000000003 R08: 0000000000000000 R09: 00000000000002ff [ 59.983046][ T5002] R10: 0000000004000002 R11: 0000000000000246 R12: 00007ffd15d876e0 [ 59.991019][ T5002] R13: 00007ffd15d87700 R14: 0000000000000000 R15: 0000000000000000 [ 59.999007][ T5002] [ 60.002193][ T5002] Kernel Offset: disabled [ 60.006620][ T5002] Rebooting in 86400 seconds..