------------[ cut here ]------------ Buffer overflow detected (80 < 122)! WARNING: CPU: 1 PID: 12484 at include/linux/thread_info.h:134 copy_overflow include/linux/thread_info.h:134 [inline] WARNING: CPU: 1 PID: 12484 at include/linux/thread_info.h:134 check_copy_size include/linux/thread_info.h:143 [inline] WARNING: CPU: 1 PID: 12484 at include/linux/thread_info.h:134 copy_to_user include/linux/uaccess.h:167 [inline] WARNING: CPU: 1 PID: 12484 at include/linux/thread_info.h:134 compat_do_ebt_get_ctl+0x47e/0x500 net/bridge/netfilter/ebtables.c:2270 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 12484 Comm: syz-executor.3 Not tainted 5.8.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:copy_overflow include/linux/thread_info.h:134 [inline] RIP: 0010:check_copy_size include/linux/thread_info.h:143 [inline] RIP: 0010:copy_to_user include/linux/uaccess.h:167 [inline] RIP: 0010:compat_do_ebt_get_ctl+0x47e/0x500 net/bridge/netfilter/ebtables.c:2270 Code: ba fd ff ff 4c 89 f7 e8 10 e5 a1 fa e9 ad fd ff ff e8 26 d5 61 fa 4c 89 e2 be 50 00 00 00 48 c7 c7 40 c9 0e 89 e8 64 dc 32 fa <0f> 0b e9 dc fd ff ff 41 bc f2 ff ff ff e9 4f fe ff ff e8 eb e4 a1 RSP: 0018:ffffc90015947af0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff92002b28f5f RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815dbc57 RDI: fffff52002b28f50 RBP: ffffffff8a8fb660 R08: 0000000000000001 R09: ffff8880ae7318e7 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000007a R13: 0000000020000100 R14: ffffc90015947d88 R15: ffffc90015947b28 do_ebt_get_ctl+0x2b4/0x790 net/bridge/netfilter/ebtables.c:2317 nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:116 ip_getsockopt net/ipv4/ip_sockglue.c:1778 [inline] ip_getsockopt+0x164/0x1c0 net/ipv4/ip_sockglue.c:1757 udp_getsockopt+0x5d/0x90 net/ipv4/udp.c:2776 __sys_getsockopt+0x219/0x4c0 net/socket.c:2179 __do_sys_getsockopt net/socket.c:2194 [inline] __se_sys_getsockopt net/socket.c:2191 [inline] __ia32_sys_getsockopt+0xb9/0x150 net/socket.c:2191 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline] __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f7d569 Code: 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55770cc EFLAGS: 00000296 ORIG_RAX: 000000000000016d RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000082 RSI: 0000000020000100 RDI: 0000000020000180 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..