syzbot


WARNING in default_device_exit_batch

Status: auto-obsoleted due to no activity on 2023/07/19 17:51
Reported-by: syzbot+92149adf6d6d4fdcb4ce@syzkaller.appspotmail.com
First crash: 426d, last: 425d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in default_device_exit_batch (3) net C inconclusive 599 551d 734d 0/26 closed as invalid on 2022/11/15 17:40
linux-4.14 WARNING in default_device_exit_batch 67 1105d 1407d 0/1 auto-closed as invalid on 2021/09/07 10:06
upstream WARNING in default_device_exit_batch (4) net C error 954 422d 548d 22/26 fixed on 2023/06/08 14:41
upstream WARNING in default_device_exit_batch (2) net 1466 816d 1412d 0/26 auto-closed as invalid on 2022/04/24 02:35
upstream WARNING in default_device_exit_batch net 2 1539d 1571d 0/26 auto-closed as invalid on 2020/06/30 07:06
linux-4.19 WARNING in default_device_exit_batch 467 868d 1410d 0/1 auto-closed as invalid on 2022/04/28 08:15
linux-4.19 WARNING in default_device_exit_batch (2) syz error 200 442d 735d 0/1 upstream: reported syz repro on 2022/05/15 20:01
linux-5.15 WARNING in default_device_exit_batch 1 429d 429d 0/3 auto-obsoleted due to no activity on 2023/07/15 14:46

Sample crash report:
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
bond5 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 32497 at net/core/dev.c:10864 unregister_netdevice_many+0x13d3/0x1870
Modules linked in:
CPU: 1 PID: 32497 Comm: kworker/u4:1 Not tainted 6.1.20-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: netns cleanup_net
RIP: 0010:unregister_netdevice_many+0x13d3/0x1870 net/core/dev.c:10864
Code: 5e f9 48 8b 7c 24 20 48 8b 3f 48 3b 7c 24 10 0f 84 ed 00 00 00 48 89 fb e8 ea 58 08 f9 48 89 d9 e9 ba f6 ff ff e8 dd 58 08 f9 <0f> 0b e9 4e ff ff ff e8 d1 58 08 f9 0f 0b eb 9e e8 c8 58 08 f9 c6
RSP: 0018:ffffc9000368f900 EFLAGS: 00010293
RAX: ffffffff88820843 RBX: ffff8880321a40a0 RCX: ffff88808f0857c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000368fa70 R08: ffffffff8882074b R09: fffffbfff1c12075
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11006434981 R14: ffff8880321a4000 R15: ffff8880325f6000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbaec101300 CR3: 000000000cc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 default_device_exit_batch+0x5bc/0x630 net/core/dev.c:11335
 ops_exit_list net/core/net_namespace.c:174 [inline]
 cleanup_net+0x763/0xb60 net/core/net_namespace.c:601
 process_one_work+0x909/0x1380 kernel/workqueue.c:2289
 worker_thread+0xa5f/0x1210 kernel/workqueue.c:2436
 kthread+0x268/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/21 17:50 linux-6.1.y 7eaef76fbc46 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in default_device_exit_batch
2023/03/20 23:21 linux-6.1.y 7eaef76fbc46 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in default_device_exit_batch
* Struck through repros no longer work on HEAD.