[syzbot] [netfilter?] WARNING in xt_cluster_mt (2)
From: syzbot
Date: Thu Oct 03 2024 - 12:16:58 EST
Hello,
syzbot found the following issue on:
HEAD commit: da3ea35007d0 Linux 6.11-rc7
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10462807980000
kernel config: https://syzkaller.appspot.com/x/.config?x=61d235cb8d15001c
dashboard link: https://syzkaller.appspot.com/bug?extid=256c348558aa5cf611a9
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14462807980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b21bc7980000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/46118740ac64/disk-da3ea350.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/435bba6270f6/vmlinux-da3ea350.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e93b731ca115/bzImage-da3ea350.xz
Bisection is inconclusive: the first bad commit could be any of:
40fc165304f0 usb: host: xhci-rcar: Add XHCI_TRUST_TX_LENGTH quirk
e82adc1074a7 usb: typec: Fix unchecked return value
976daf9d1199 usb: typec: tcpm: Try PD-2.0 if sink does not respond to 3.0 source-caps
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1209449f980000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+256c348558aa5cf611a9@xxxxxxxxxxxxxxxxxxxxxxxxx
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11 at net/netfilter/xt_cluster.c:72 xt_cluster_is_multicast_addr net/netfilter/xt_cluster.c:72 [inline]
WARNING: CPU: 0 PID: 11 at net/netfilter/xt_cluster.c:72 xt_cluster_mt+0x196/0x780 net/netfilter/xt_cluster.c:104
Modules linked in:
CPU: 0 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:xt_cluster_is_multicast_addr net/netfilter/xt_cluster.c:72 [inline]
RIP: 0010:xt_cluster_mt+0x196/0x780 net/netfilter/xt_cluster.c:104
Code: f0 00 00 00 23 2b bf e0 00 00 00 89 ee e8 32 ee a1 f7 81 fd e0 00 00 00 75 1c e8 e5 e9 a1 f7 e9 83 00 00 00 e8 db e9 a1 f7 90 <0f> 0b 90 eb 0c e8 d0 e9 a1 f7 eb 05 e8 c9 e9 a1 f7 4d 8d af 80 00
RSP: 0018:ffffc90000006c88 EFLAGS: 00010246
RAX: ffffffff89f1a2d5 RBX: 0000000000000007 RCX: ffff88801ced3c00
RDX: 0000000000000100 RSI: ffffffff8fd2a440 RDI: 0000000000000007
RBP: ffffc90000006e68 R08: 0000000000000001 R09: ffffffff89f1a1c4
R10: 0000000000000002 R11: ffff88801ced3c00 R12: dffffc0000000000
R13: 1ffff92000159c18 R14: ffffc90000ace140 R15: ffff8880251bf280
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc6d6b6440 CR3: 000000000e734000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
ebt_do_match net/bridge/netfilter/ebtables.c:109 [inline]
ebt_do_table+0x174b/0x2a40 net/bridge/netfilter/ebtables.c:230
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312
__br_forward+0x489/0x660 net/bridge/br_forward.c:115
br_handle_frame_finish+0x18ba/0x1fe0 net/bridge/br_input.c:215
br_nf_hook_thresh+0x472/0x590
br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424
__netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5555
__netif_receive_skb_one_core net/core/dev.c:5659 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5775
process_backlog+0x662/0x15b0 net/core/dev.c:6108
__napi_poll+0xcb/0x490 net/core/dev.c:6772
napi_poll net/core/dev.c:6841 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6963
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
</IRQ>
<TASK>
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:908 [inline]
__dev_queue_xmit+0x1763/0x3e90 net/core/dev.c:4450
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0x1001/0x1730 net/ipv6/ip6_output.c:141
ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:226
NF_HOOK include/linux/netfilter.h:314 [inline]
ndisc_send_skb+0xab2/0x1380 net/ipv6/ndisc.c:511
ndisc_send_ns+0xcc/0x160 net/ipv6/ndisc.c:669
addrconf_dad_work+0xb45/0x16f0 net/ipv6/addrconf.c:4282
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
---
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