./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor436343329 <...> Warning: Permanently added '10.128.0.249' (ED25519) to the list of known hosts. execve("./syz-executor436343329", ["./syz-executor436343329"], 0x7fffe21ef600 /* 10 vars */) = 0 brk(NULL) = 0x555593b4a000 brk(0x555593b4ad00) = 0x555593b4ad00 arch_prctl(ARCH_SET_FS, 0x555593b4a380) = 0 set_tid_address(0x555593b4a650) = 5062 set_robust_list(0x555593b4a660, 24) = 0 rseq(0x555593b4aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor436343329", 4096) = 27 getrandom("\xf4\x37\xa2\x91\xa2\x57\xd9\x5a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555593b4ad00 brk(0x555593b6bd00) = 0x555593b6bd00 brk(0x555593b6c000) = 0x555593b6c000 mprotect(0x7f372dd18000, 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=0x555593b4a650) = 5063 ./strace-static-x86_64: Process 5063 attached [pid 5063] set_robust_list(0x555593b4a660, 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() (124) [ 85.790805][ T5063] WARNING: CPU: 0 PID: 5063 at net/core/dev.c:3287 skb_checksum_help+0x68f/0x730 [ 85.800581][ T5063] Modules linked in: [ 85.804501][ T5063] CPU: 0 PID: 5063 Comm: syz-executor436 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 85.815381][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 85.825547][ T5063] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 85.831473][ T5063] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 a0 b2 9f 8c 4c 89 f6 89 da e8 52 ab 16 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 85.851248][ T5063] RSP: 0018:ffffc900041f6e48 EFLAGS: 00010246 [ 85.857457][ T5063] RAX: 93059ddab2b16500 RBX: 000000000000007c RCX: ffff88807d0a8000 [ 85.865618][ T5063] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 85.873695][ T5063] RBP: dffffc0000000000 R08: ffffffff8157cb22 R09: fffffbfff1bf9650 [ 85.882125][ T5063] R10: dffffc0000000000 R11: fffffbfff1bf9650 R12: 1ffff110058469c6 [ 85.891342][ T5063] R13: 0000000000000527 R14: 0000000000000529 R15: ffff88802c234dc0 [ 85.899673][ T5063] FS: 0000555593b4a380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 85.909035][ T5063] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.915822][ T5063] CR2: 0000000020001000 CR3: 000000002e7c8000 CR4: 00000000003506f0 [ 85.924244][ T5063] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.932318][ T5063] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.940383][ T5063] Call Trace: [ 85.943786][ T5063] [ 85.946731][ T5063] ? __warn+0x163/0x4b0 [ 85.951172][ T5063] ? skb_checksum_help+0x68f/0x730 [ 85.956353][ T5063] ? report_bug+0x2b3/0x500 [ 85.960979][ T5063] ? skb_checksum_help+0x68f/0x730 [ 85.966249][ T5063] ? handle_bug+0x3e/0x70 [ 85.970974][ T5063] ? exc_invalid_op+0x1a/0x50 [ 85.975795][ T5063] ? asm_exc_invalid_op+0x1a/0x20 [ 85.980912][ T5063] ? __warn_printk+0x292/0x360 [ 85.985750][ T5063] ? skb_checksum_help+0x68f/0x730 [ 85.991069][ T5063] ? skb_checksum_help+0x68e/0x730 [ 85.996242][ T5063] ip_do_fragment+0x21b/0x1b60 [ 86.001114][ T5063] ? __pfx_ip_finish_output2+0x10/0x10 [ 86.006627][ T5063] ? __pfx_ip_do_fragment+0x10/0x10 [ 86.012041][ T5063] ? kasan_quarantine_put+0xdc/0x230 [ 86.017391][ T5063] ? lockdep_hardirqs_on+0x99/0x150 [ 86.022797][ T5063] ? __ip_finish_output+0x247/0x400 [ 86.028122][ T5063] ? kmem_cache_free+0x102/0x2b0 [ 86.033134][ T5063] ? ip_fragment+0x9a/0x220 [ 86.037754][ T5063] __ip_finish_output+0x290/0x400 [ 86.042849][ T5063] iptunnel_xmit+0x540/0x9b0 [ 86.047475][ T5063] ip_tunnel_xmit+0x20ef/0x2940 [ 86.053878][ T5063] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 86.059359][ T5063] ? skb_mac_gso_segment+0x1b8/0x740 [ 86.064750][ T5063] ? skb_mac_gso_segment+0x50c/0x740 [ 86.070168][ T5063] ? gre_build_header+0x25b/0x990 [ 86.075299][ T5063] ipgre_xmit+0x854/0xc30 [ 86.084726][ T5063] dev_hard_start_xmit+0x26a/0x790 [ 86.089938][ T5063] __dev_queue_xmit+0x19f4/0x3b10 [ 86.095081][ T5063] ? __dev_queue_xmit+0x2c4/0x3b10 [ 86.100795][ T5063] ? skb_partial_csum_set+0x105/0x350 [ 86.106512][ T5063] ? __pfx___dev_queue_xmit+0x10/0x10 [ 86.112274][ T5063] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 86.117916][ T5063] ? packet_parse_headers+0x7bd/0xad0 [ 86.123523][ T5063] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 86.129485][ T5063] ? packet_xmit+0x68/0x330 [ 86.134151][ T5063] packet_sendmsg+0x4932/0x63d0 [ 86.139221][ T5063] ? __lock_acquire+0x1346/0x1fd0 [ 86.144381][ T5063] ? smack_socket_sendmsg+0x172/0x540 [ 86.149861][ T5063] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 86.155812][ T5063] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 86.162478][ T5063] ? __pfx_tomoyo_socket_sendmsg_permission+0x10/0x10 [ 86.169755][ T5063] ? __pfx_packet_sendmsg+0x10/0x10 [ 86.175202][ T5063] ? __pfx_lock_release+0x10/0x10 [ 86.180544][ T5063] ? __import_iovec+0x536/0x820 [ 86.185634][ T5063] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.191063][ T5063] ? security_socket_sendmsg+0x87/0xb0 [ 86.196679][ T5063] ? __pfx_packet_sendmsg+0x10/0x10 [ 86.202032][ T5063] __sock_sendmsg+0x221/0x270 [ 86.206792][ T5063] ____sys_sendmsg+0x525/0x7d0 [ 86.211681][ T5063] ? __pfx_____sys_sendmsg+0x10/0x10 [ 86.217068][ T5063] ? do_raw_spin_lock+0x14f/0x370 [ 86.222387][ T5063] __sys_sendmsg+0x2b0/0x3a0 [ 86.227306][ T5063] ? __pfx___sys_sendmsg+0x10/0x10 [ 86.232795][ T5063] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.239247][ T5063] ? _raw_spin_unlock_irq+0x2e/0x50 [ 86.244520][ T5063] ? ptrace_notify+0x279/0x380 [ 86.249567][ T5063] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.255939][ T5063] ? exc_page_fault+0x585/0x890 [ 86.261025][ T5063] ? syscall_trace_enter+0x5f/0x150 [ 86.266359][ T5063] do_syscall_64+0xfb/0x240 [ 86.270952][ T5063] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 86.276892][ T5063] RIP: 0033:0x7f372dca04d9 [ 86.281455][ 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 [ 86.301680][ T5063] RSP: 002b:00007fff7e32f6c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 86.310420][ T5063] RAX: ffffffffffffffda RBX: 00007f372dced390 RCX: 00007f372dca04d9 [ 86.319076][ T5063] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 86.327392][ T5063] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 86.335647][ T5063] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff7e32f710 [ 86.343841][ T5063] R13: 00007fff7e32f6e0 R14: 0000000000000001 R15: 00007fff7e32f710 [ 86.351985][ T5063] [ 86.355148][ T5063] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 86.362613][ T5063] CPU: 0 PID: 5063 Comm: syz-executor436 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 [ 86.372727][ T5063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 86.382968][ T5063] Call Trace: [ 86.386458][ T5063] [ 86.389506][ T5063] dump_stack_lvl+0x241/0x360 [ 86.394311][ T5063] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.399890][ T5063] ? __pfx__printk+0x10/0x10 [ 86.404700][ T5063] ? vscnprintf+0x5d/0x90 [ 86.409213][ T5063] panic+0x349/0x860 [ 86.413239][ T5063] ? __warn+0x172/0x4b0 [ 86.417500][ T5063] ? __pfx_panic+0x10/0x10 [ 86.422001][ T5063] __warn+0x31e/0x4b0 [ 86.426082][ T5063] ? skb_checksum_help+0x68f/0x730 [ 86.431244][ T5063] report_bug+0x2b3/0x500 [ 86.435653][ T5063] ? skb_checksum_help+0x68f/0x730 [ 86.440790][ T5063] handle_bug+0x3e/0x70 [ 86.445218][ T5063] exc_invalid_op+0x1a/0x50 [ 86.449919][ T5063] asm_exc_invalid_op+0x1a/0x20 [ 86.454893][ T5063] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 86.460653][ T5063] Code: 48 8b 4c 24 10 0f b6 04 01 84 c0 0f 85 89 00 00 00 48 8b 44 24 08 2b 18 48 c7 c7 a0 b2 9f 8c 4c 89 f6 89 da e8 52 ab 16 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 86.481173][ T5063] RSP: 0018:ffffc900041f6e48 EFLAGS: 00010246 [ 86.487256][ T5063] RAX: 93059ddab2b16500 RBX: 000000000000007c RCX: ffff88807d0a8000 [ 86.495247][ T5063] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 86.503592][ T5063] RBP: dffffc0000000000 R08: ffffffff8157cb22 R09: fffffbfff1bf9650 [ 86.511591][ T5063] R10: dffffc0000000000 R11: fffffbfff1bf9650 R12: 1ffff110058469c6 [ 86.519823][ T5063] R13: 0000000000000527 R14: 0000000000000529 R15: ffff88802c234dc0 [ 86.528149][ T5063] ? __warn_printk+0x292/0x360 [ 86.533238][ T5063] ? skb_checksum_help+0x68e/0x730 [ 86.538377][ T5063] ip_do_fragment+0x21b/0x1b60 [ 86.543250][ T5063] ? __pfx_ip_finish_output2+0x10/0x10 [ 86.548779][ T5063] ? __pfx_ip_do_fragment+0x10/0x10 [ 86.553987][ T5063] ? kasan_quarantine_put+0xdc/0x230 [ 86.559380][ T5063] ? lockdep_hardirqs_on+0x99/0x150 [ 86.564598][ T5063] ? __ip_finish_output+0x247/0x400 [ 86.569914][ T5063] ? kmem_cache_free+0x102/0x2b0 [ 86.574860][ T5063] ? ip_fragment+0x9a/0x220 [ 86.579377][ T5063] __ip_finish_output+0x290/0x400 [ 86.584429][ T5063] iptunnel_xmit+0x540/0x9b0 [ 86.589056][ T5063] ip_tunnel_xmit+0x20ef/0x2940 [ 86.593942][ T5063] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 86.599145][ T5063] ? skb_mac_gso_segment+0x1b8/0x740 [ 86.604761][ T5063] ? skb_mac_gso_segment+0x50c/0x740 [ 86.610129][ T5063] ? gre_build_header+0x25b/0x990 [ 86.615468][ T5063] ipgre_xmit+0x854/0xc30 [ 86.619914][ T5063] dev_hard_start_xmit+0x26a/0x790 [ 86.625131][ T5063] __dev_queue_xmit+0x19f4/0x3b10 [ 86.630184][ T5063] ? __dev_queue_xmit+0x2c4/0x3b10 [ 86.635305][ T5063] ? skb_partial_csum_set+0x105/0x350 [ 86.640706][ T5063] ? __pfx___dev_queue_xmit+0x10/0x10 [ 86.646111][ T5063] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 86.651872][ T5063] ? packet_parse_headers+0x7bd/0xad0 [ 86.657485][ T5063] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 86.663388][ T5063] ? packet_xmit+0x68/0x330 [ 86.667936][ T5063] packet_sendmsg+0x4932/0x63d0 [ 86.673104][ T5063] ? __lock_acquire+0x1346/0x1fd0 [ 86.678650][ T5063] ? smack_socket_sendmsg+0x172/0x540 [ 86.684444][ T5063] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 86.690560][ T5063] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 86.697131][ T5063] ? __pfx_tomoyo_socket_sendmsg_permission+0x10/0x10 [ 86.704038][ T5063] ? __pfx_packet_sendmsg+0x10/0x10 [ 86.709625][ T5063] ? __pfx_lock_release+0x10/0x10 [ 86.714753][ T5063] ? __import_iovec+0x536/0x820 [ 86.720049][ T5063] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 86.725636][ T5063] ? security_socket_sendmsg+0x87/0xb0 [ 86.731408][ T5063] ? __pfx_packet_sendmsg+0x10/0x10 [ 86.737006][ T5063] __sock_sendmsg+0x221/0x270 [ 86.741801][ T5063] ____sys_sendmsg+0x525/0x7d0 [ 86.746760][ T5063] ? __pfx_____sys_sendmsg+0x10/0x10 [ 86.752087][ T5063] ? do_raw_spin_lock+0x14f/0x370 [ 86.757418][ T5063] __sys_sendmsg+0x2b0/0x3a0 [ 86.762043][ T5063] ? __pfx___sys_sendmsg+0x10/0x10 [ 86.767476][ T5063] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.774185][ T5063] ? _raw_spin_unlock_irq+0x2e/0x50 [ 86.779441][ T5063] ? ptrace_notify+0x279/0x380 [ 86.784534][ T5063] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 86.791113][ T5063] ? exc_page_fault+0x585/0x890 [ 86.796271][ T5063] ? syscall_trace_enter+0x5f/0x150 [ 86.801655][ T5063] do_syscall_64+0xfb/0x240 [ 86.806238][ T5063] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 86.812948][ T5063] RIP: 0033:0x7f372dca04d9 [ 86.817520][ 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 [ 86.837857][ T5063] RSP: 002b:00007fff7e32f6c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 86.846411][ T5063] RAX: ffffffffffffffda RBX: 00007f372dced390 RCX: 00007f372dca04d9 [ 86.854606][ T5063] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 86.862799][ T5063] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 86.871180][ T5063] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fff7e32f710 [ 86.879287][ T5063] R13: 00007fff7e32f6e0 R14: 0000000000000001 R15: 00007fff7e32f710 [ 86.887406][ T5063] [ 86.890769][ T5063] Kernel Offset: disabled [ 86.895137][ T5063] Rebooting in 86400 seconds..