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> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
