syzbot


WARNING in nf_tables_table_destroy

Status: fixed on 2020/02/18 14:31
Reported-by: syzbot+2a3b1b28cad90c608e20@syzkaller.appspotmail.com
Fix commit: eb014de4fd41 netfilter: nf_tables: autoload modules from the abort path
First crash: 935d, last: 935d

Cause bisection: introduced by (bisect log) :
commit ec7470b834fe7b5d7eff11b6677f5d7fdf5e9a91
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon Jan 13 17:09:58 2020 +0000

  netfilter: nf_tables: store transaction list locally while requesting module

Crash: WARNING in nf_tables_table_destroy (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit eb014de4fd418de1a277913cba244e47274fe392
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue Jan 21 15:48:03 2020 +0000

  netfilter: nf_tables: autoload modules from the abort path

similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in nf_tables_table_destroy 1 257d 257d 0/1 auto-closed as invalid on 2022/03/26 10:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9693 at net/netfilter/nf_tables_api.c:1155 nf_tables_table_destroy.isra.0+0x100/0x150 net/netfilter/nf_tables_api.c:1155
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 9693 Comm: syz-executor142 Not tainted 5.5.0-rc5-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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:nf_tables_table_destroy.isra.0+0x100/0x150 net/netfilter/nf_tables_api.c:1155
Code: 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 52 48 8b 3b e8 b1 8c 4d fb e8 9c 1c 10 fb 5b 41 5c 41 5d 5d c3 e8 90 1c 10 fb <0f> 0b e8 89 1c 10 fb 5b 41 5c 41 5d 5d c3 e8 dd db 4d fb e9 40 ff
RSP: 0018:ffffc900022b7478 EFLAGS: 00010293
RAX: ffff8880a936a580 RBX: ffff8880a2c9e1a0 RCX: ffffffff8664d86a
RDX: 0000000000000000 RSI: ffffffff8664d900 RDI: 0000000000000005
RBP: ffffc900022b7490 R08: ffff8880a936a580 R09: ffffc900022b73c0
R10: fffffbfff165e7b2 R11: ffffffff8b2f3d97 R12: ffff8880a729f400
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880a72f7380
 nf_tables_abort_release net/netfilter/nf_tables_api.c:7216 [inline]
 __nf_tables_abort+0x1bad/0x2a50 net/netfilter/nf_tables_api.c:7360
 nf_tables_abort+0x17/0x30 net/netfilter/nf_tables_api.c:7373
 nfnetlink_rcv_batch+0xa5d/0x17a0 net/netfilter/nfnetlink.c:494
 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
 __do_sys_sendmsg net/socket.c:2426 [inline]
 __se_sys_sendmsg net/socket.c:2424 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x446c39
Code: e8 8c e7 ff ff 48 83 c4 18 c3 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 0f 83 fb 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f39f091ad98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446c39
RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c
R13: 00000000200002c0 R14: 00000000004aec20 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2020/01/18 02:11 net 5a9ef19454cd 3de7aabb .config log report syz C