WARNING in netdev_queue_update_kobjects

Status: upstream: reported C repro on 2026/09/15 01:16
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+96c9c1ba229d67f0269e@syzkaller.appspotmail.com
First crash: 59d, last: 14m
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2026/10/25 linux-6.6.y (ToT) 0aebf2870d53 C [report] WARNING in netdev_queue_update_kobjects
2026/10/25 upstream (ToT) 21a7f44fd076 C Didn't crash
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in netdev_queue_update_kobjects -1 7 925d 938d 0/3 auto-obsoleted due to no activity on 2024/08/10 09:34
upstream WARNING in netdev_queue_update_kobjects fs driver-core -1 6 1802d 1834d 0/29 auto-closed as invalid on 2022/03/06 23:23
upstream WARNING in netdev_queue_update_kobjects (2) driver-core fs -1 syz, C error error 18 935d 934d 0/29 auto-obsoleted due to no activity on 2024/07/01 12:34
linux-5.15 WARNING in netdev_queue_update_kobjects (3) -1 20 3d15h 55d 0/3 upstream: reported on 2026/09/19 09:17
linux-6.1 WARNING in netdev_queue_update_kobjects -1 16 926d 938d 0/3 auto-obsoleted due to no activity on 2024/07/10 12:34
linux-5.15 WARNING in netdev_queue_update_kobjects (2) origin:upstream -1 syz, C done 303 698d 742d 3/3 fixed on 2025/01/25 04:10
linux-6.1 WARNING in netdev_queue_update_kobjects (2) origin:lts-only -1 syz, C done 344 698d 742d 3/3 fixed on 2025/01/25 04:10
linux-6.1 WARNING in netdev_queue_update_kobjects (3) -1 syz 99 4h24m 58d 0/3 upstream: reported syz repro on 2026/09/15 17:57

Sample crash report:
------------[ cut here ]------------
sysfs group 'byte_queue_limits' not found for kobject 'tx-0'
WARNING: CPU: 0 PID: 5977 at fs/sysfs/group.c:284 sysfs_remove_group+0x17b/0x290 fs/sysfs/group.c:282
Modules linked in:
CPU: 0 PID: 5977 Comm: kbnepd bnep0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:sysfs_remove_group+0x17b/0x290 fs/sysfs/group.c:282
Code: 8b 1b 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 f7 fd c8 ff 49 8b 17 48 c7 c7 40 d2 fa 8a 48 89 de e8 95 a6 39 ff <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 5f f8 6f ff
RSP: 0018:ffffc900034ff940 EFLAGS: 00010246
RAX: 1ac61b2f0abe4800 RBX: ffffffff8be60ca0 RCX: ffff8880203c5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000064 R08: ffffc900034ff547 R09: 1ffff9200069fea8
R10: dffffc0000000000 R11: fffff5200069fea9 R12: 1ffffffff17cc090
R13: dffffc0000000000 R14: ffff888025b4c0f8 R15: ffff8880228f9420
FS:  0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdbca78dd8 CR3: 0000000077154000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 netdev_queue_update_kobjects+0x3e1/0x480 net/core/net-sysfs.c:1758
 remove_queue_kobjects net/core/net-sysfs.c:1857 [inline]
 netdev_unregister_kobject+0x108/0x250 net/core/net-sysfs.c:2010
 unregister_netdevice_many_notify+0x1449/0x1910 net/core/dev.c:11255
 unregister_netdevice_many net/core/dev.c:11281 [inline]
 unregister_netdevice_queue net/core/dev.c:11161 [inline]
 unregister_netdevice include/linux/netdevice.h:3198 [inline]
 unregister_netdev+0x150/0x1c0 net/core/dev.c:11299
 bnep_session+0x2b86/0x2d50 net/bluetooth/bnep/core.c:562
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (258):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/24 23:00 linux-6.6.y 0aebf2870d53 1d9ca40b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/13 13:21 linux-6.6.y 5139929c698c be5d1971 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/13 07:44 linux-6.6.y 5139929c698c 26b2fee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/12 22:53 linux-6.6.y 5139929c698c c0087d7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/12 21:25 linux-6.6.y 5139929c698c c0087d7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/12 06:48 linux-6.6.y 5139929c698c 8d68b303 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/12 06:48 linux-6.6.y 5139929c698c 8d68b303 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/12 01:10 linux-6.6.y 5139929c698c 8d68b303 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/10 18:26 linux-6.6.y 5139929c698c d3056657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/10 15:54 linux-6.6.y 5139929c698c d3056657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/10 04:22 linux-6.6.y 5139929c698c 70ec0380 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/09 16:46 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/09 12:35 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/09 04:47 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/09 02:13 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/08 19:11 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/08 08:18 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/08 08:18 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/07 23:10 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/07 21:50 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/07 07:12 linux-6.6.y 5139929c698c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/04 18:19 linux-6.6.y b5a1dc3ad482 73438ed0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/04 11:47 linux-6.6.y b5a1dc3ad482 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/04 06:20 linux-6.6.y b5a1dc3ad482 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/04 00:20 linux-6.6.y b5a1dc3ad482 e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/03 18:17 linux-6.6.y b5a1dc3ad482 e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/03 15:17 linux-6.6.y b5a1dc3ad482 e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/03 00:26 linux-6.6.y b5a1dc3ad482 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/02 17:13 linux-6.6.y b5a1dc3ad482 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/02 16:41 linux-6.6.y b5a1dc3ad482 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/02 13:35 linux-6.6.y b5a1dc3ad482 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/02 07:57 linux-6.6.y b5a1dc3ad482 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/11/01 07:58 linux-6.6.y b5a1dc3ad482 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/31 12:22 linux-6.6.y b5a1dc3ad482 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/31 11:14 linux-6.6.y b5a1dc3ad482 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/31 00:43 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/30 22:01 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/30 22:01 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/30 19:33 linux-6.6.y b5a1dc3ad482 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/30 16:21 linux-6.6.y b5a1dc3ad482 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/29 20:36 linux-6.6.y 0aebf2870d53 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/29 10:27 linux-6.6.y 0aebf2870d53 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/29 07:28 linux-6.6.y 0aebf2870d53 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/29 06:20 linux-6.6.y 0aebf2870d53 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/29 06:20 linux-6.6.y 0aebf2870d53 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/28 13:12 linux-6.6.y 0aebf2870d53 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/10/27 20:29 linux-6.6.y 0aebf2870d53 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
2026/09/15 01:15 linux-6.6.y 79643295eba1 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in netdev_queue_update_kobjects
* Struck through repros no longer work on HEAD.