./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor850107276
<...>
Warning: Permanently added '10.128.0.124' (ED25519) to the list of known hosts.
execve("./syz-executor850107276", ["./syz-executor850107276"], 0x7ffe7d55a5a0 /* 10 vars */) = 0
brk(NULL) = 0x55557c176000
brk(0x55557c176d00) = 0x55557c176d00
arch_prctl(ARCH_SET_FS, 0x55557c176380) = 0
set_tid_address(0x55557c176650) = 5837
set_robust_list(0x55557c176660, 24) = 0
rseq(0x55557c176ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor850107276", 4096) = 27
getrandom("\x7d\x8c\xb0\x7b\x60\x06\xcd\x58", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55557c176d00
brk(0x55557c197d00) = 0x55557c197d00
brk(0x55557c198000) = 0x55557c198000
mprotect(0x7f04eec6f000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program
) = 0x200001000000
write(1, "executing program\n", 18) = 18
socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 3
setsockopt(3, SOL_UDP, UDP_GRO, [2624], 4) = 0
setsockopt(3, SOL_UDP, UDP_ENCAP, [2], 4) = 0
exit_group(0) = ?
[ 71.940840][ T5837] ------------[ cut here ]------------
[ 71.946427][ T5837] WARNING: CPU: 0 PID: 5837 at net/ipv4/udp_offload.c:123 udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 71.957529][ T5837] Modules linked in:
[ 71.961537][ T5837] CPU: 0 UID: 0 PID: 5837 Comm: syz-executor850 Not tainted 6.14.0-syzkaller-13320-g420aabef3ab5 #0 PREEMPT(full)
[ 71.974085][ T5837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 71.984692][ T5837] RIP: 0010:udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 71.991565][ T5837] Code: 00 00 e8 c6 5a 2f f7 48 c1 e5 04 48 8d b5 20 53 c7 9a ba 10 00 00 00 4c 89 ff e8 ce 87 99 f7 e9 ce 00 00 00 e8 a4 5a 2f f7 90 <0f> 0b 90 e9 de fd ff ff bf 01 00 00 00 89 ee e8 cf 5e 2f f7 85 ed
[ 72.012049][ T5837] RSP: 0018:ffffc90003effa88 EFLAGS: 00010293
[ 72.018580][ T5837] RAX: ffffffff8a93fc9c RBX: 0000000000000000 RCX: ffff8880306f9e00
[ 72.027004][ T5837] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 72.034988][ T5837] RBP: 0000000000000000 R08: ffffffff8a93fabe R09: 1ffffffff20bfb2e
[ 72.043557][ T5837] R10: dffffc0000000000 R11: fffffbfff20bfb2f R12: ffff88814ef21738
[ 72.051969][ T5837] R13: dffffc0000000000 R14: ffff88814ef21778 R15: 1ffff11029de42ef
[ 72.060379][ T5837] FS: 0000000000000000(0000) GS:ffff888124f96000(0000) knlGS:0000000000000000
[ 72.069760][ T5837] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 72.076349][ T5837] CR2: 00007f04eec760d0 CR3: 000000000eb38000 CR4: 00000000003526f0
[ 72.084814][ T5837] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 72.093134][ T5837] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 72.101685][ T5837] Call Trace:
[ 72.104972][ T5837] <TASK>
[ 72.108267][ T5837] udpv6_destroy_sock+0x212/0x270
[ 72.113331][ T5837] ? __pfx_udpv6_destroy_sock+0x10/0x10
[ 72.119521][ T5837] sk_common_release+0x71/0x2e0
[ 72.124480][ T5837] inet_release+0x17d/0x200
[ 72.129413][ T5837] sock_close+0xbc/0x240
[ 72.133740][ T5837] ? __pfx_sock_close+0x10/0x10
[ 72.138977][ T5837] __fput+0x3e9/0x9f0
[ 72.142982][ T5837] task_work_run+0x251/0x310
[ 72.147948][ T5837] ? __pfx_task_work_run+0x10/0x10
[ 72.153098][ T5837] ? switch_task_namespaces+0xe4/0x110
[ 72.158891][ T5837] do_exit+0xa11/0x27f0
[ 72.163159][ T5837] ? __pfx_do_exit+0x10/0x10
[ 72.168036][ T5837] ? _raw_spin_unlock_irq+0x23/0x50
[ 72.173258][ T5837] ? lockdep_hardirqs_on+0x9d/0x150
[ 72.178902][ T5837] do_group_exit+0x207/0x2c0
[ 72.183498][ T5837] __x64_sys_exit_group+0x3f/0x40
[ 72.189217][ T5837] x64_sys_call+0x26c3/0x26d0
[ 72.193979][ T5837] do_syscall_64+0xf3/0x230
[ 72.198940][ T5837] ? clear_bhb_loop+0x45/0xa0
[ 72.203612][ T5837] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.209972][ T5837] RIP: 0033:0x7f04eebfac79
[ 72.214408][ T5837] Code: Unable to access opcode bytes at 0x7f04eebfac4f.
[ 72.221905][ T5837] RSP: 002b:00007fffdcaa34a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 72.230856][ T5837] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f04eebfac79
[ 72.239225][ T5837] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
[ 72.247592][ T5837] RBP: 00007f04eec75270 R08: ffffffffffffffb8 R09: 00007fffdcaa36c8
[ 72.255560][ T5837] R10: 0000200000000000 R11: 0000000000000246 R12: 00007f04eec75270
[ 72.264097][ T5837] R13: 0000000000000000 R14: 00007f04eec75cc0 R15: 00007f04eebcca70
[ 72.272458][ T5837] </TASK>
[ 72.275494][ T5837] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 72.282783][ T5837] CPU: 0 UID: 0 PID: 5837 Comm: syz-executor850 Not tainted 6.14.0-syzkaller-13320-g420aabef3ab5 #0 PREEMPT(full)
[ 72.294848][ T5837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[ 72.304896][ T5837] Call Trace:
[ 72.308167][ T5837] <TASK>
[ 72.311079][ T5837] dump_stack_lvl+0x241/0x360
[ 72.315773][ T5837] ? __pfx_dump_stack_lvl+0x10/0x10
[ 72.320963][ T5837] ? __pfx__printk+0x10/0x10
[ 72.325559][ T5837] ? vscnprintf+0x5d/0x90
[ 72.329871][ T5837] panic+0x349/0x880
[ 72.333752][ T5837] ? __warn+0x174/0x4d0
[ 72.337902][ T5837] ? __pfx_panic+0x10/0x10
[ 72.342338][ T5837] __warn+0x344/0x4d0
[ 72.346315][ T5837] ? udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 72.352129][ T5837] report_bug+0x2b3/0x500
[ 72.356474][ T5837] ? udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 72.362300][ T5837] ? udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 72.368114][ T5837] ? udp_tunnel_update_gro_rcv+0x28f/0x4c0
[ 72.373953][ T5837] handle_bug+0x89/0x170
[ 72.378193][ T5837] exc_invalid_op+0x1a/0x50
[ 72.382689][ T5837] asm_exc_invalid_op+0x1a/0x20
[ 72.387528][ T5837] RIP: 0010:udp_tunnel_update_gro_rcv+0x28d/0x4c0
[ 72.393933][ T5837] Code: 00 00 e8 c6 5a 2f f7 48 c1 e5 04 48 8d b5 20 53 c7 9a ba 10 00 00 00 4c 89 ff e8 ce 87 99 f7 e9 ce 00 00 00 e8 a4 5a 2f f7 90 <0f> 0b 90 e9 de fd ff ff bf 01 00 00 00 89 ee e8 cf 5e 2f f7 85 ed
[ 72.413538][ T5837] RSP: 0018:ffffc90003effa88 EFLAGS: 00010293
[ 72.419602][ T5837] RAX: ffffffff8a93fc9c RBX: 0000000000000000 RCX: ffff8880306f9e00
[ 72.427599][ T5837] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 72.435589][ T5837] RBP: 0000000000000000 R08: ffffffff8a93fabe R09: 1ffffffff20bfb2e
[ 72.443559][ T5837] R10: dffffc0000000000 R11: fffffbfff20bfb2f R12: ffff88814ef21738
[ 72.451656][ T5837] R13: dffffc0000000000 R14: ffff88814ef21778 R15: 1ffff11029de42ef
[ 72.459635][ T5837] ? udp_tunnel_update_gro_rcv+0xae/0x4c0
[ 72.465354][ T5837] ? udp_tunnel_update_gro_rcv+0x28c/0x4c0
[ 72.471166][ T5837] ? udp_tunnel_update_gro_rcv+0x28c/0x4c0
[ 72.476969][ T5837] udpv6_destroy_sock+0x212/0x270
[ 72.481992][ T5837] ? __pfx_udpv6_destroy_sock+0x10/0x10
[ 72.487532][ T5837] sk_common_release+0x71/0x2e0
[ 72.492385][ T5837] inet_release+0x17d/0x200
[ 72.496884][ T5837] sock_close+0xbc/0x240
[ 72.501119][ T5837] ? __pfx_sock_close+0x10/0x10
[ 72.505961][ T5837] __fput+0x3e9/0x9f0
[ 72.509942][ T5837] task_work_run+0x251/0x310
[ 72.514533][ T5837] ? __pfx_task_work_run+0x10/0x10
[ 72.519649][ T5837] ? switch_task_namespaces+0xe4/0x110
[ 72.525110][ T5837] do_exit+0xa11/0x27f0
[ 72.529271][ T5837] ? __pfx_do_exit+0x10/0x10
[ 72.533869][ T5837] ? _raw_spin_unlock_irq+0x23/0x50
[ 72.539056][ T5837] ? lockdep_hardirqs_on+0x9d/0x150
[ 72.544252][ T5837] do_group_exit+0x207/0x2c0
[ 72.548873][ T5837] __x64_sys_exit_group+0x3f/0x40
[ 72.553897][ T5837] x64_sys_call+0x26c3/0x26d0
[ 72.558568][ T5837] do_syscall_64+0xf3/0x230
[ 72.563067][ T5837] ? clear_bhb_loop+0x45/0xa0
[ 72.567740][ T5837] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 72.573621][ T5837] RIP: 0033:0x7f04eebfac79
[ 72.578027][ T5837] Code: Unable to access opcode bytes at 0x7f04eebfac4f.
[ 72.585030][ T5837] RSP: 002b:00007fffdcaa34a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[ 72.593469][ T5837] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f04eebfac79
[ 72.601435][ T5837] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
[ 72.609397][ T5837] RBP: 00007f04eec75270 R08: ffffffffffffffb8 R09: 00007fffdcaa36c8
[ 72.617395][ T5837] R10: 0000200000000000 R11: 0000000000000246 R12: 00007f04eec75270
[ 72.625375][ T5837] R13: 0000000000000000 R14: 00007f04eec75cc0 R15: 00007f04eebcca70
[ 72.633363][ T5837] </TASK>
[ 72.636615][ T5837] Kernel Offset: disabled
[ 72.640934][ T5837] Rebooting in 86400 seconds..