./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor922547353 <...> DUID 00:04:83:15:3d:b3:f9:44:11:d6:e6:e1:d9:1f:49:4d:f4:66 forked to background, child pid 4671 [ 32.345679][ T4672] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.356377][ T4672] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. execve("./syz-executor922547353", ["./syz-executor922547353"], 0x7fff393b99e0 /* 10 vars */) = 0 brk(NULL) = 0x5555555eb000 brk(0x5555555ebc40) = 0x5555555ebc40 arch_prctl(ARCH_SET_FS, 0x5555555eb300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor922547353", 4096) = 27 brk(0x55555560cc40) = 0x55555560cc40 brk(0x55555560d000) = 0x55555560d000 mprotect(0x7f238d8e3000, 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 5003 attached , child_tidptr=0x5555555eb5d0) = 5003 [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 7a 1b 57 06 31 ff 89 de e8 0b 8c 76 f9 84 db 75 dd [ 60.161133][ T5003] RSP: 0018:ffffc90003a4f120 EFLAGS: 00010293 [ 60.167259][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 60.175334][ T5003] RDX: ffff888027e38000 RSI: ffffffff880db613 RDI: 0000000000000006 [ 60.183371][ T5003] RBP: ffff8880729f83c0 R08: 0000000000000006 R09: 00000000000006aa [ 60.191351][ T5003] R10: 0000000000000688 R11: ffffffff81d6eaa5 R12: ffff8880729f8434 [ 60.199387][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 60.207418][ T5003] FS: 00005555555eb300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 60.216394][ T5003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.223032][ T5003] CR2: 0000000020001000 CR3: 00000000275dc000 CR4: 00000000003506e0 [ 60.231023][ T5003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.239056][ T5003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.247061][ T5003] Call Trace: [ 60.250327][ T5003] [ 60.253806][ T5003] ? __warn+0xe6/0x390 [ 60.257901][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.263050][ T5003] ? report_bug+0x2da/0x500 [ 60.267578][ T5003] ? handle_bug+0x3c/0x70 [ 60.271979][ T5003] ? exc_invalid_op+0x18/0x50 [ 60.276674][ T5003] ? asm_exc_invalid_op+0x1a/0x20 [ 60.281706][ T5003] ? kasan_set_track+0x25/0x30 [ 60.288563][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.293769][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.298903][ T5003] ip_do_fragment+0x99f/0x17d0 [ 60.303724][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 60.309378][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 60.315259][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 60.320560][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.325821][ T5003] ? ip_frag_next+0xa50/0xa50 [ 60.330507][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 60.336097][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 60.340703][ T5003] ? kmem_cache_free+0xe9/0x480 [ 60.345603][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 60.351074][ T5003] __ip_finish_output+0x4a0/0x650 [ 60.356136][ T5003] ip_finish_output+0x31/0x280 [ 60.360912][ T5003] ip_output+0x1a3/0x320 [ 60.365200][ T5003] ip_local_out+0xb3/0x1a0 [ 60.369647][ T5003] iptunnel_xmit+0x622/0xa40 [ 60.374299][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 60.379088][ T5003] ? btf_id_cmp_func+0x88/0x90 [ 60.383937][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 60.389249][ T5003] ? __gre_xmit+0x4f4/0x980 [ 60.393797][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 60.398174][ T5003] dev_hard_start_xmit+0x187/0x700 [ 60.403333][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 60.408377][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 60.413708][ T5003] ? hash_and_copy_to_iter+0x1a0/0x210 [ 60.419181][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 60.424715][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 60.430122][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 60.436800][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 60.441771][ T5003] packet_xmit+0x260/0x390 [ 60.446246][ T5003] packet_sendmsg+0x347f/0x5030 [ 60.451106][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 60.455649][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.461563][ T5003] ? aa_af_perm+0x240/0x240 [ 60.466102][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 60.472052][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 60.477349][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.483279][ T5003] sock_sendmsg+0xde/0x190 [ 60.487714][ T5003] ____sys_sendmsg+0x71c/0x900 [ 60.492528][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 60.497925][ T5003] ? kernel_sendmsg+0x50/0x50 [ 60.502661][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.508662][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 60.513379][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 60.518009][ T5003] ? lock_sync+0x190/0x190 [ 60.522475][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 60.527692][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 60.532778][ T5003] ? spin_bug+0x1c0/0x1c0 [ 60.537127][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 60.542200][ T5003] ? __fget_light+0x20a/0x270 [ 60.546928][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 60.551456][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 60.556538][ T5003] ? lock_downgrade+0x690/0x690 [ 60.561438][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.566700][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.571952][ T5003] ? ptrace_notify+0xfe/0x140 [ 60.576650][ T5003] do_syscall_64+0x39/0xb0 [ 60.581065][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.586996][ T5003] RIP: 0033:0x7f238d86f559 [ 60.591419][ 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 [ 60.611072][ T5003] RSP: 002b:00007ffc88d3b768 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.619546][ T5003] RAX: ffffffffffffffda RBX: 00007ffc88d3b778 RCX: 00007f238d86f559 [ 60.627580][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 60.635587][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 60.643587][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc88d3b780 [ 60.651565][ T5003] R13: 00007ffc88d3b7a0 R14: 0000000000000000 R15: 0000000000000000 [ 60.659588][ T5003] [ 60.662680][ T5003] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 60.669957][ T5003] CPU: 1 PID: 5003 Comm: syz-executor922 Not tainted 6.4.0-rc5-syzkaller-00133-g25041a4c02c7 #0 [ 60.680360][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 60.690404][ T5003] Call Trace: [ 60.693679][ T5003] [ 60.696611][ T5003] dump_stack_lvl+0xd9/0x150 [ 60.701206][ T5003] panic+0x686/0x730 [ 60.705115][ T5003] ? panic_smp_self_stop+0xa0/0xa0 [ 60.710238][ T5003] ? show_trace_log_lvl+0x284/0x390 [ 60.715460][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.720588][ T5003] check_panic_on_warn+0xb1/0xc0 [ 60.725537][ T5003] __warn+0xf2/0x390 [ 60.729443][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.734596][ T5003] report_bug+0x2da/0x500 [ 60.738950][ T5003] handle_bug+0x3c/0x70 [ 60.743117][ T5003] exc_invalid_op+0x18/0x50 [ 60.747624][ T5003] asm_exc_invalid_op+0x1a/0x20 [ 60.752493][ T5003] RIP: 0010:skb_checksum_help+0x4a3/0x5c0 [ 60.758226][ T5003] Code: 90 76 f9 0f 0b 0f b6 1d a2 1b 57 06 31 ff 89 de e8 32 8c 76 f9 84 db 0f 84 cf 00 00 00 41 bc ea ff ff ff eb ad e8 3d 90 76 f9 <0f> 0b 0f b6 1d 7a 1b 57 06 31 ff 89 de e8 0b 8c 76 f9 84 db 75 dd [ 60.777834][ T5003] RSP: 0018:ffffc90003a4f120 EFLAGS: 00010293 [ 60.783906][ T5003] RAX: 0000000000000000 RBX: 00000000000006a8 RCX: 0000000000000000 [ 60.791889][ T5003] RDX: ffff888027e38000 RSI: ffffffff880db613 RDI: 0000000000000006 [ 60.799857][ T5003] RBP: ffff8880729f83c0 R08: 0000000000000006 R09: 00000000000006aa [ 60.807829][ T5003] R10: 0000000000000688 R11: ffffffff81d6eaa5 R12: ffff8880729f8434 [ 60.815801][ T5003] R13: 00000000000006a8 R14: 0000000000000688 R15: 00000000000006aa [ 60.823776][ T5003] ? kasan_set_track+0x25/0x30 [ 60.828557][ T5003] ? skb_checksum_help+0x4a3/0x5c0 [ 60.833687][ T5003] ip_do_fragment+0x99f/0x17d0 [ 60.838454][ T5003] ? ip_fragment.constprop.0+0x240/0x240 [ 60.844097][ T5003] ? _raw_spin_unlock_irqrestore+0x41/0x70 [ 60.849923][ T5003] ? kasan_quarantine_put+0xf9/0x220 [ 60.855231][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.860439][ T5003] ? ip_frag_next+0xa50/0xa50 [ 60.865127][ T5003] ? slab_free_freelist_hook+0x8b/0x1c0 [ 60.870698][ T5003] ? kfree_skbmem+0xef/0x1b0 [ 60.875308][ T5003] ? kmem_cache_free+0xe9/0x480 [ 60.880177][ T5003] ip_fragment.constprop.0+0x16b/0x240 [ 60.885642][ T5003] __ip_finish_output+0x4a0/0x650 [ 60.890674][ T5003] ip_finish_output+0x31/0x280 [ 60.895453][ T5003] ip_output+0x1a3/0x320 [ 60.899707][ T5003] ip_local_out+0xb3/0x1a0 [ 60.904129][ T5003] iptunnel_xmit+0x622/0xa40 [ 60.908736][ T5003] ip_tunnel_xmit+0xfc0/0x3170 [ 60.913510][ T5003] ? btf_id_cmp_func+0x88/0x90 [ 60.918291][ T5003] ? ip_md_tunnel_xmit+0x1f80/0x1f80 [ 60.923593][ T5003] ? __gre_xmit+0x4f4/0x980 [ 60.928108][ T5003] ipgre_xmit+0x6d3/0x8f0 [ 60.932447][ T5003] dev_hard_start_xmit+0x187/0x700 [ 60.937572][ T5003] __dev_queue_xmit+0x2be2/0x3b10 [ 60.942617][ T5003] ? netdev_core_pick_tx+0x390/0x390 [ 60.947911][ T5003] ? hash_and_copy_to_iter+0x1a0/0x210 [ 60.953383][ T5003] ? hash_and_copy_to_iter+0x210/0x210 [ 60.958848][ T5003] ? skb_partial_csum_set+0x203/0x390 [ 60.964230][ T5003] ? virtio_net_hdr_to_skb.constprop.0+0xa44/0x1220 [ 60.970835][ T5003] ? packet_rcv_spkt+0x620/0x620 [ 60.975783][ T5003] packet_xmit+0x260/0x390 [ 60.980210][ T5003] packet_sendmsg+0x347f/0x5030 [ 60.985092][ T5003] ? aa_sk_perm+0x31d/0xb10 [ 60.989601][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 60.995504][ T5003] ? aa_af_perm+0x240/0x240 [ 61.000007][ T5003] ? copy_iovec_from_user.part.0+0xc7/0x100 [ 61.005920][ T5003] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 61.011209][ T5003] ? packet_lookup_frame.isra.0+0x1c0/0x1c0 [ 61.017117][ T5003] sock_sendmsg+0xde/0x190 [ 61.021540][ T5003] ____sys_sendmsg+0x71c/0x900 [ 61.026310][ T5003] ? copy_msghdr_from_user+0xfc/0x150 [ 61.031700][ T5003] ? kernel_sendmsg+0x50/0x50 [ 61.036391][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 61.042393][ T5003] ___sys_sendmsg+0x110/0x1b0 [ 61.047080][ T5003] ? do_recvmmsg+0x6f0/0x6f0 [ 61.051687][ T5003] ? lock_sync+0x190/0x190 [ 61.056114][ T5003] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 61.061325][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 61.066365][ T5003] ? spin_bug+0x1c0/0x1c0 [ 61.070708][ T5003] ? _raw_spin_lock_irq+0x45/0x50 [ 61.075747][ T5003] ? __fget_light+0x20a/0x270 [ 61.080449][ T5003] __sys_sendmsg+0xf7/0x1c0 [ 61.084964][ T5003] ? __sys_sendmsg_sock+0x40/0x40 [ 61.089996][ T5003] ? lock_downgrade+0x690/0x690 [ 61.094867][ T5003] ? lockdep_hardirqs_on+0x7d/0x100 [ 61.100073][ T5003] ? _raw_spin_unlock_irq+0x2e/0x50 [ 61.105290][ T5003] ? ptrace_notify+0xfe/0x140 [ 61.109993][ T5003] do_syscall_64+0x39/0xb0 [ 61.114433][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.120344][ T5003] RIP: 0033:0x7f238d86f559 [ 61.124762][ 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 [ 61.144375][ T5003] RSP: 002b:00007ffc88d3b768 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.152792][ T5003] RAX: ffffffffffffffda RBX: 00007ffc88d3b778 RCX: 00007f238d86f559 [ 61.160768][ T5003] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 61.168743][ T5003] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 61.176716][ T5003] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffc88d3b780 [ 61.184688][ T5003] R13: 00007ffc88d3b7a0 R14: 0000000000000000 R15: 0000000000000000 [ 61.192676][ T5003] [ 61.195892][ T5003] Kernel Offset: disabled [ 61.200280][ T5003] Rebooting in 86400 seconds..