syzbot


general protection fault in br_nf_pre_routing_finish

Status: auto-closed as invalid on 2020/03/13 10:58
Reported-by: syzbot+589fed0baead6b45dfbe@syzkaller.appspotmail.com
First crash: 1027d, last: 1018d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in br_nf_pre_routing_finish (2) 1 59d 55d 0/24 upstream: reported on 2022/08/03 08:08

Sample crash report:
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: 9 Comm: ksoftirqd/0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:br_nf_pre_routing_finish+0x232/0x1790 net/bridge/br_netfilter_hooks.c:360
Code: 83 c0 01 38 d0 7c 08 84 d2 0f 85 bb 0f 00 00 48 8d 7b 02 45 0f b7 7c 24 3e 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 9b
RSP: 0018:ffffc90000cff640 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff86e45977
RDX: 0000000000000000 RSI: ffffffff86e459e8 RDI: 0000000000000002
RBP: ffffc90000cff798 R08: ffff8880a99ee240 R09: ffff8880a99eead0
R10: fffffbfff14f33c0 R11: ffffffff8a799e07 R12: ffff88808f8b20c0
R13: 0000000000000010 R14: 0000000000000002 R15: 00000000000000b4
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001838e80 CR3: 000000000986d000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 NF_HOOK include/linux/netfilter.h:307 [inline]
 NF_HOOK include/linux/netfilter.h:301 [inline]
 br_nf_pre_routing+0xc7d/0x22b3 net/bridge/br_netfilter_hooks.c:531
 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:224 [inline]
 br_handle_frame+0x806/0x1340 net/bridge/br_input.c:349
 __netif_receive_skb_core+0xfbc/0x30b0 net/core/dev.c:5051
 __netif_receive_skb_one_core+0xa8/0x1a0 net/core/dev.c:5148
 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5264
 process_backlog+0x206/0x750 net/core/dev.c:6095
 napi_poll net/core/dev.c:6532 [inline]
 net_rx_action+0x508/0x1120 net/core/dev.c:6600
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:603 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:595
 smpboot_thread_fn+0x6a3/0xa40 kernel/smpboot.c:165
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at kernel/locking/mutex.c:1419 mutex_trylock+0x279/0x2f0 kernel/locking/mutex.c:1427

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-kasan-gce 2019/12/14 10:57 net-next 1d1997db870f eef6e580 .config log report
ci-upstream-net-kasan-gce 2019/12/04 18:26 net-next 596cf45cbf6e b2088328 .config log report
* Struck through repros no longer work on HEAD.