syzbot


WARNING in default_device_exit_batch

Status: auto-obsoleted due to no activity on 2023/07/15 14:46
Reported-by: syzbot+29d2c94444abfa53133f@syzkaller.appspotmail.com
First crash: 429d, last: 429d
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 735d 0/26 closed as invalid on 2022/11/15 17:40
linux-4.14 WARNING in default_device_exit_batch 67 1105d 1408d 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 817d 1412d 0/26 auto-closed as invalid on 2022/04/24 02:35
upstream WARNING in default_device_exit_batch net 2 1540d 1571d 0/26 auto-closed as invalid on 2020/06/30 07:06
linux-4.19 WARNING in default_device_exit_batch 467 869d 1411d 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-6.1 WARNING in default_device_exit_batch 2 425d 426d 0/3 auto-obsoleted due to no activity on 2023/07/19 17:51

Sample crash report:
bond5 (unregistering): Released all slaves
bond4 (unregistering): Released all slaves
bond0 (unregistering): (slave bond3): Releasing backup interface
bond3 (unregistering): Released all slaves
bond2 (unregistering): Released all slaves
bond1 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 0 PID: 144 at net/core/dev.c:11088 unregister_netdevice_many+0x13f0/0x18f0
Modules linked in:
CPU: 0 PID: 144 Comm: kworker/u4:1 Not tainted 5.15.103-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+0x13f0/0x18f0 net/core/dev.c:11088
Code: 8f f9 48 8b 7c 24 28 48 8b 3f 48 3b 7c 24 10 0f 84 ed 00 00 00 48 89 fb e8 bd 19 46 f9 48 89 d9 e9 c7 f6 ff ff e8 b0 19 46 f9 <0f> 0b e9 4e ff ff ff e8 a4 19 46 f9 0f 0b eb 9e e8 9b 19 46 f9 c6
RSP: 0018:ffffc9000174f8c0 EFLAGS: 00010293
RAX: ffffffff883a5f20 RBX: ffff88804412c0a0 RCX: ffff888016e19d00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000174fa50 R08: ffffffff883a5e28 R09: fffffbfff1b3b201
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1100882598a R14: ffff88804412c000 R15: ffff888045a04200
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f826dd57300 CR3: 00000000235fc000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 default_device_exit_batch+0x390/0x3f0 net/core/dev.c:11594
 ops_exit_list net/core/net_namespace.c:174 [inline]
 cleanup_net+0x763/0xb60 net/core/net_namespace.c:596
 process_one_work+0x90d/0x1270 kernel/workqueue.c:2306
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2453
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/17 14:46 linux-5.15.y 8020ae3c051d 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in default_device_exit_batch
* Struck through repros no longer work on HEAD.