./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2617543906 <...> Warning: Permanently added '10.128.10.19' (ED25519) to the list of known hosts. execve("./syz-executor2617543906", ["./syz-executor2617543906"], 0x7fff59b77010 /* 10 vars */) = 0 brk(NULL) = 0x555585616000 brk(0x555585616d00) = 0x555585616d00 arch_prctl(ARCH_SET_FS, 0x555585616380) = 0 set_tid_address(0x555585616650) = 5089 set_robust_list(0x555585616660, 24) = 0 rseq(0x555585616ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2617543906", 4096) = 28 getrandom("\xa5\xac\xaf\xec\xdd\x7f\xa0\x1f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555585616d00 brk(0x555585637d00) = 0x555585637d00 brk(0x555585638000) = 0x555585638000 mprotect(0x7feef6e13000, 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 5090 attached , child_tidptr=0x555585616650) = 5090 [pid 5090] set_robust_list(0x555585616660, 24) = 0 [pid 5090] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setsid() = 1 [pid 5090] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5090] unshare(CLONE_NEWNS) = 0 [pid 5090] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5090] unshare(CLONE_NEWIPC) = 0 [pid 5090] unshare(CLONE_NEWCGROUP) = 0 [pid 5090] unshare(CLONE_NEWUTS) = 0 [pid 5090] unshare(CLONE_SYSVSEM) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "16777216", 8) = 8 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "536870912", 9) = 9 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "8192", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5090] close(3) = 0 [pid 5090] getpid() = 1 [pid 5090] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< skb_headlen() (124) [ 64.370011][ T5090] WARNING: CPU: 1 PID: 5090 at net/core/dev.c:3320 skb_checksum_help+0x68f/0x730 [ 64.379183][ T5090] Modules linked in: [ 64.383066][ T5090] CPU: 1 PID: 5090 Comm: syz-executor261 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 [ 64.393137][ T5090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 64.403266][ T5090] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 64.409049][ T5090] 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 5d c4 8c 4c 89 f6 89 da e8 d2 f6 00 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 64.428739][ T5090] RSP: 0018:ffffc90002d7eda8 EFLAGS: 00010246 [ 64.434836][ T5090] RAX: f8a4d568b1ad3800 RBX: 000000000000007c RCX: ffff88802c239e00 [ 64.442857][ T5090] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 64.450877][ T5090] RBP: dffffc0000000000 R08: ffffffff81589dd2 R09: fffffbfff1c39918 [ 64.458892][ T5090] R10: dffffc0000000000 R11: fffffbfff1c39918 R12: 1ffff110058bc886 [ 64.466879][ T5090] R13: 0000000000000527 R14: 0000000000000529 R15: ffff88802c5e43c0 [ 64.474925][ T5090] FS: 0000555585616380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 64.483903][ T5090] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.490563][ T5090] CR2: 0000000020001000 CR3: 0000000022800000 CR4: 00000000003506f0 [ 64.498619][ T5090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.506588][ T5090] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.514646][ T5090] Call Trace: [ 64.517990][ T5090] [ 64.520936][ T5090] ? __warn+0x163/0x4e0 [ 64.525091][ T5090] ? skb_checksum_help+0x68f/0x730 [ 64.530251][ T5090] ? report_bug+0x2b3/0x500 [ 64.534775][ T5090] ? skb_checksum_help+0x68f/0x730 [ 64.539952][ T5090] ? handle_bug+0x3e/0x70 [ 64.544304][ T5090] ? exc_invalid_op+0x1a/0x50 [ 64.549030][ T5090] ? asm_exc_invalid_op+0x1a/0x20 [ 64.554075][ T5090] ? __warn_printk+0x292/0x360 [ 64.558893][ T5090] ? skb_checksum_help+0x68f/0x730 [ 64.564019][ T5090] ? skb_checksum_help+0x68e/0x730 [ 64.569185][ T5090] ip_do_fragment+0x21b/0x1b60 [ 64.573975][ T5090] ? __pfx_ip_finish_output2+0x10/0x10 [ 64.579506][ T5090] ? __pfx_ip_do_fragment+0x10/0x10 [ 64.584736][ T5090] ? kasan_quarantine_put+0xdc/0x230 [ 64.590088][ T5090] ? lockdep_hardirqs_on+0x99/0x150 [ 64.595308][ T5090] ? __ip_finish_output+0x247/0x400 [ 64.600569][ T5090] ? kmem_cache_free+0x145/0x340 [ 64.605529][ T5090] ? ip_fragment+0x9a/0x220 [ 64.610092][ T5090] __ip_finish_output+0x290/0x400 [ 64.615134][ T5090] iptunnel_xmit+0x540/0x9b0 [ 64.619793][ T5090] ip_tunnel_xmit+0x2113/0x2940 [ 64.624722][ T5090] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 64.629985][ T5090] ? gre_build_header+0x341/0xb30 [ 64.635048][ T5090] ? __pfx_gre_build_header+0x10/0x10 [ 64.640541][ T5090] ? iptunnel_handle_offloads+0x25f/0x650 [ 64.646281][ T5090] ipgre_xmit+0x956/0xd40 [ 64.650672][ T5090] ? __pfx_ipgre_xmit+0x10/0x10 [ 64.655537][ T5090] ? validate_xmit_skb+0xa04/0x1120 [ 64.660789][ T5090] dev_hard_start_xmit+0x27a/0x7e0 [ 64.665925][ T5090] __dev_queue_xmit+0x1a4d/0x3bd0 [ 64.671029][ T5090] ? __might_fault+0xc6/0x120 [ 64.675744][ T5090] ? __dev_queue_xmit+0x2cf/0x3bd0 [ 64.680918][ T5090] ? skb_partial_csum_set+0x105/0x350 [ 64.686306][ T5090] ? __pfx___dev_queue_xmit+0x10/0x10 [ 64.691761][ T5090] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 64.697386][ T5090] ? packet_parse_headers+0x7bd/0xad0 [ 64.702786][ T5090] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 64.708644][ T5090] ? packet_xmit+0x68/0x330 [ 64.713168][ T5090] packet_sendmsg+0x46a9/0x6130 [ 64.718091][ T5090] ? __pfx___might_resched+0x10/0x10 [ 64.723400][ T5090] ? aa_sk_perm+0x967/0xab0 [ 64.727991][ T5090] ? __pfx_packet_sendmsg+0x10/0x10 [ 64.733215][ T5090] ? __pfx_lock_release+0x10/0x10 [ 64.738320][ T5090] ? __import_iovec+0x536/0x820 [ 64.743186][ T5090] ? aa_sock_msg_perm+0x91/0x160 [ 64.748170][ T5090] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 64.753470][ T5090] ? security_socket_sendmsg+0x87/0xb0 [ 64.759125][ T5090] ? __pfx_packet_sendmsg+0x10/0x10 [ 64.764362][ T5090] __sock_sendmsg+0x221/0x270 [ 64.769152][ T5090] ____sys_sendmsg+0x525/0x7d0 [ 64.773959][ T5090] ? __pfx_____sys_sendmsg+0x10/0x10 [ 64.779318][ T5090] ? do_raw_spin_lock+0x14f/0x370 [ 64.784367][ T5090] __sys_sendmsg+0x2b0/0x3a0 [ 64.789057][ T5090] ? __pfx___sys_sendmsg+0x10/0x10 [ 64.794288][ T5090] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.800799][ T5090] ? _raw_spin_unlock_irq+0x2e/0x50 [ 64.806021][ T5090] ? ptrace_notify+0x279/0x380 [ 64.810854][ T5090] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 64.817199][ T5090] ? exc_page_fault+0x59e/0x900 [ 64.822106][ T5090] do_syscall_64+0xf5/0x240 [ 64.826627][ T5090] ? clear_bhb_loop+0x35/0x90 [ 64.831365][ T5090] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.837298][ T5090] RIP: 0033:0x7feef6d9b4d9 [ 64.841788][ T5090] 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 [ 64.861475][ T5090] RSP: 002b:00007fffd8953e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.869947][ T5090] RAX: ffffffffffffffda RBX: 00007feef6de8390 RCX: 00007feef6d9b4d9 [ 64.877967][ T5090] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 64.885954][ T5090] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 64.894010][ T5090] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffd8953ea0 [ 64.902067][ T5090] R13: 00007fffd8953e70 R14: 0000000000000001 R15: 00007fffd8953ea0 [ 64.910136][ T5090] [ 64.913173][ T5090] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 64.920552][ T5090] CPU: 1 PID: 5090 Comm: syz-executor261 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 [ 64.930693][ T5090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 64.940738][ T5090] Call Trace: [ 64.944007][ T5090] [ 64.946924][ T5090] dump_stack_lvl+0x241/0x360 [ 64.951599][ T5090] ? __pfx_dump_stack_lvl+0x10/0x10 [ 64.956785][ T5090] ? __pfx__printk+0x10/0x10 [ 64.961364][ T5090] ? vscnprintf+0x5d/0x90 [ 64.965684][ T5090] panic+0x349/0x860 [ 64.969580][ T5090] ? __warn+0x172/0x4e0 [ 64.973729][ T5090] ? __pfx_panic+0x10/0x10 [ 64.978147][ T5090] __warn+0x346/0x4e0 [ 64.982115][ T5090] ? skb_checksum_help+0x68f/0x730 [ 64.987237][ T5090] report_bug+0x2b3/0x500 [ 64.991576][ T5090] ? skb_checksum_help+0x68f/0x730 [ 64.996678][ T5090] handle_bug+0x3e/0x70 [ 65.000827][ T5090] exc_invalid_op+0x1a/0x50 [ 65.005321][ T5090] asm_exc_invalid_op+0x1a/0x20 [ 65.010182][ T5090] RIP: 0010:skb_checksum_help+0x68f/0x730 [ 65.015912][ T5090] 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 5d c4 8c 4c 89 f6 89 da e8 d2 f6 00 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 cf fc ff ff 48 8b 0c 24 80 e1 07 80 [ 65.035517][ T5090] RSP: 0018:ffffc90002d7eda8 EFLAGS: 00010246 [ 65.041574][ T5090] RAX: f8a4d568b1ad3800 RBX: 000000000000007c RCX: ffff88802c239e00 [ 65.049534][ T5090] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 65.057497][ T5090] RBP: dffffc0000000000 R08: ffffffff81589dd2 R09: fffffbfff1c39918 [ 65.065459][ T5090] R10: dffffc0000000000 R11: fffffbfff1c39918 R12: 1ffff110058bc886 [ 65.073861][ T5090] R13: 0000000000000527 R14: 0000000000000529 R15: ffff88802c5e43c0 [ 65.081830][ T5090] ? __warn_printk+0x292/0x360 [ 65.086593][ T5090] ? skb_checksum_help+0x68e/0x730 [ 65.091700][ T5090] ip_do_fragment+0x21b/0x1b60 [ 65.096467][ T5090] ? __pfx_ip_finish_output2+0x10/0x10 [ 65.101921][ T5090] ? __pfx_ip_do_fragment+0x10/0x10 [ 65.107114][ T5090] ? kasan_quarantine_put+0xdc/0x230 [ 65.112418][ T5090] ? lockdep_hardirqs_on+0x99/0x150 [ 65.117633][ T5090] ? __ip_finish_output+0x247/0x400 [ 65.122865][ T5090] ? kmem_cache_free+0x145/0x340 [ 65.127806][ T5090] ? ip_fragment+0x9a/0x220 [ 65.132311][ T5090] __ip_finish_output+0x290/0x400 [ 65.137347][ T5090] iptunnel_xmit+0x540/0x9b0 [ 65.141962][ T5090] ip_tunnel_xmit+0x2113/0x2940 [ 65.146828][ T5090] ? __pfx_ip_tunnel_xmit+0x10/0x10 [ 65.152020][ T5090] ? gre_build_header+0x341/0xb30 [ 65.157038][ T5090] ? __pfx_gre_build_header+0x10/0x10 [ 65.162398][ T5090] ? iptunnel_handle_offloads+0x25f/0x650 [ 65.168126][ T5090] ipgre_xmit+0x956/0xd40 [ 65.172480][ T5090] ? __pfx_ipgre_xmit+0x10/0x10 [ 65.177336][ T5090] ? validate_xmit_skb+0xa04/0x1120 [ 65.182541][ T5090] dev_hard_start_xmit+0x27a/0x7e0 [ 65.187648][ T5090] __dev_queue_xmit+0x1a4d/0x3bd0 [ 65.192659][ T5090] ? __might_fault+0xc6/0x120 [ 65.197338][ T5090] ? __dev_queue_xmit+0x2cf/0x3bd0 [ 65.202455][ T5090] ? skb_partial_csum_set+0x105/0x350 [ 65.207857][ T5090] ? __pfx___dev_queue_xmit+0x10/0x10 [ 65.213216][ T5090] ? virtio_net_hdr_to_skb+0xa6a/0x1330 [ 65.218764][ T5090] ? packet_parse_headers+0x7bd/0xad0 [ 65.224157][ T5090] ? __pfx_virtio_net_hdr_to_skb+0x10/0x10 [ 65.229959][ T5090] ? packet_xmit+0x68/0x330 [ 65.234452][ T5090] packet_sendmsg+0x46a9/0x6130 [ 65.239310][ T5090] ? __pfx___might_resched+0x10/0x10 [ 65.244593][ T5090] ? aa_sk_perm+0x967/0xab0 [ 65.249087][ T5090] ? __pfx_packet_sendmsg+0x10/0x10 [ 65.254279][ T5090] ? __pfx_lock_release+0x10/0x10 [ 65.259298][ T5090] ? __import_iovec+0x536/0x820 [ 65.264138][ T5090] ? aa_sock_msg_perm+0x91/0x160 [ 65.269073][ T5090] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 65.274351][ T5090] ? security_socket_sendmsg+0x87/0xb0 [ 65.279800][ T5090] ? __pfx_packet_sendmsg+0x10/0x10 [ 65.284986][ T5090] __sock_sendmsg+0x221/0x270 [ 65.289658][ T5090] ____sys_sendmsg+0x525/0x7d0 [ 65.294421][ T5090] ? __pfx_____sys_sendmsg+0x10/0x10 [ 65.299699][ T5090] ? do_raw_spin_lock+0x14f/0x370 [ 65.304722][ T5090] __sys_sendmsg+0x2b0/0x3a0 [ 65.309302][ T5090] ? __pfx___sys_sendmsg+0x10/0x10 [ 65.314411][ T5090] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.320756][ T5090] ? _raw_spin_unlock_irq+0x2e/0x50 [ 65.325963][ T5090] ? ptrace_notify+0x279/0x380 [ 65.330727][ T5090] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 65.337044][ T5090] ? exc_page_fault+0x59e/0x900 [ 65.341885][ T5090] do_syscall_64+0xf5/0x240 [ 65.346374][ T5090] ? clear_bhb_loop+0x35/0x90 [ 65.351042][ T5090] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 65.356927][ T5090] RIP: 0033:0x7feef6d9b4d9 [ 65.361332][ T5090] 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 [ 65.380930][ T5090] RSP: 002b:00007fffd8953e58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 65.389353][ T5090] RAX: ffffffffffffffda RBX: 00007feef6de8390 RCX: 00007feef6d9b4d9 [ 65.397335][ T5090] RDX: 0000000000000000 RSI: 0000000020002ac0 RDI: 0000000000000003 [ 65.405307][ T5090] RBP: 0000000000000003 R08: 0000555500000000 R09: 0000555500000000 [ 65.413271][ T5090] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fffd8953ea0 [ 65.421244][ T5090] R13: 00007fffd8953e70 R14: 0000000000000001 R15: 00007fffd8953ea0 [ 65.429215][ T5090] [ 65.432513][ T5090] Kernel Offset: disabled [ 65.436860][ T5090] Rebooting in 86400 seconds..