audit: type=1400 audit(1577286797.291:36): avc: denied { map } for pid=7067 comm="syz-executor926" path="/root/syz-executor926738089" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 ip_tables: iptables: counters copy to user failed while replacing table : caps=(0x0000000000000000, 0x00000144401d7c69) len=572 data_len=0 gso_size=104 gso_type=1 ip_summed=3 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7067 at net/core/dev.c:2613 skb_warn_bad_offload.cold+0x1d7/0x454 net/core/dev.c:2613 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7067 Comm: syz-executor926 Not tainted 4.14.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x142/0x197 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x2f/0x2f kernel/panic.c:547 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:skb_warn_bad_offload.cold+0x1d7/0x454 net/core/dev.c:2613 RSP: 0018:ffff88807c79f368 EFLAGS: 00010286 RAX: 0000000000000066 RBX: ffff88808bc38da8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888090026950 RDI: ffffed100f8f3e63 RBP: ffff88807c79f3b8 R08: 0000000000000066 R09: ffff888090026920 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff875893e0 R13: ffffffff875876e0 R14: 0000000000000000 R15: 000000000000023c skb_checksum_help+0x61b/0x850 net/core/dev.c:2634 checksum_tg+0x5c/0x71 net/netfilter/xt_CHECKSUM.c:29 ipt_do_table+0xafd/0x1770 net/ipv4/netfilter/ip_tables.c:353 ipt_mangle_out net/ipv4/netfilter/iptable_mangle.c:64 [inline] iptable_mangle_hook+0x2dc/0x570 net/ipv4/netfilter/iptable_mangle.c:89 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline] nf_hook_slow+0xaf/0x1b0 net/netfilter/core.c:467 nf_hook include/linux/netfilter.h:205 [inline] __ip_local_out+0x38c/0x820 net/ipv4/ip_output.c:113 ip_local_out+0x29/0x170 net/ipv4/ip_output.c:122 ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504 __tcp_transmit_skb+0x1721/0x2fd0 net/ipv4/tcp_output.c:1131 tcp_transmit_skb net/ipv4/tcp_output.c:1147 [inline] tcp_write_xmit+0x523/0x49b0 net/ipv4/tcp_output.c:2383 tcp_push_one+0xc1/0xf0 net/ipv4/tcp_output.c:2578 tcp_sendmsg_locked+0x1584/0x31c0 net/ipv4/tcp.c:1406 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1457 inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 SYSC_sendto+0x206/0x310 net/socket.c:1763 SyS_sendto+0x40/0x50 net/socket.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x441689 RSP: 002b:00007ffc11b90838 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441689 RDX: 0000000000008293 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00000000006cb018 R08: 0000000000000000 R09: 0000000000000027 R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000402f10 R13: 0000000000402fa0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..