kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12516 Comm: syz-executor.4 Not tainted 5.5.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nft_chain_parse_hook+0x386/0xa10 net/netfilter/nf_tables_api.c:1778 Code: e8 cf d4 0f fb 41 83 fd 05 0f 87 62 05 00 00 e8 40 d3 0f fb 49 8d 7c 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a6 05 00 00 44 89 e9 be 01 00 RSP: 0018:ffffc900057170f0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc900057172a0 RCX: ffffc9001289f000 RDX: 0000000000000003 RSI: ffffffff86652420 RDI: 0000000000000018 RBP: ffffc900057171e0 R08: ffff88805a838500 R09: 0000000000000000 R10: fffff52000ae2e2d R11: ffffc9000571716f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900057171b8 FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000f5dbcb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000009358194 CR3: 00000000a2356000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_tables_addchain.constprop.0+0x1c1/0x1520 net/netfilter/nf_tables_api.c:1899 nf_tables_newchain+0x1033/0x1820 net/netfilter/nf_tables_api.c:2207 nfnetlink_rcv_batch+0xf42/0x17a0 net/netfilter/nfnetlink.c:433 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x3e7/0x460 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __compat_sys_sendmsg net/compat.c:642 [inline] __do_compat_sys_sendmsg net/compat.c:649 [inline] __se_compat_sys_sendmsg net/compat.c:646 [inline] __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:646 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fc09a9 Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 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:00000000f5dbc0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000240 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace e81bddb5fc30d629 ]--- RIP: 0010:nft_chain_parse_hook+0x386/0xa10 net/netfilter/nf_tables_api.c:1778 Code: e8 cf d4 0f fb 41 83 fd 05 0f 87 62 05 00 00 e8 40 d3 0f fb 49 8d 7c 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a6 05 00 00 44 89 e9 be 01 00 RSP: 0018:ffffc900057170f0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc900057172a0 RCX: ffffc9001289f000 RDX: 0000000000000003 RSI: ffffffff86652420 RDI: 0000000000000018 RBP: ffffc900057171e0 R08: ffff88805a838500 R09: 0000000000000000 R10: fffff52000ae2e2d R11: ffffc9000571716f R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900057171b8 FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000f5dbcb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000031c21000 CR3: 00000000a2356000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400