syzbot


WARNING in ieee80211_do_stop (3)

Status: upstream: reported on 2025/08/23 22:36
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+e9989956db9dfeabc44c@syzkaller.appspotmail.com
First crash: 5d19h, last: 5d19h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in ieee80211_do_stop (3) 0 (1) 2025/08/23 22:36
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_do_stop wireless -1 1 1136d 1132d 0/29 auto-obsoleted due to no activity on 2022/09/13 22:46
upstream WARNING in ieee80211_do_stop (2) wireless -1 5 406d 410d 0/29 auto-obsoleted due to no activity on 2024/10/22 18:25

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at net/mac80211/iface.c:510 ieee80211_do_stop+0x1a36/0x1fb0 net/mac80211/iface.c:510
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events cfg80211_rfkill_block_work
RIP: 0010:ieee80211_do_stop+0x1a36/0x1fb0 net/mac80211/iface.c:510
Code: 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 27 05 00 00 41 ff 0c 24 e9 49 f5 ff ff e8 55 a1 d0 f6 e9 3f f5 ff ff e8 4b a1 d0 f6 90 <0f> 0b 90 e9 a3 e9 ff ff e8 3d a1 d0 f6 90 43 0f b6 04 2f 84 c0 0f
RSP: 0018:ffffc900000e7520 EFLAGS: 00010293
RAX: ffffffff8aef0ae5 RBX: 0000000000000001 RCX: ffff88801ce90000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900000e7730 R08: 0000000000000000 R09: ffffffff8ae88b42
R10: 0000096c00000000 R11: ffff88807acfb338 R12: ffffc900000e7690
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888053b6a9d0
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e87977e9c CR3: 0000000075150000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ieee80211_stop+0x1b1/0x240 net/mac80211/iface.c:814
 __dev_close_many+0x364/0x6f0 net/core/dev.c:1755
 netif_close_many+0x225/0x410 net/core/dev.c:1780
 netif_close+0x158/0x210 net/core/dev.c:1797
 dev_close+0x10a/0x220 net/core/dev_api.c:220
 cfg80211_shutdown_all_interfaces+0xd4/0x220 net/wireless/core.c:277
 cfg80211_rfkill_set_block net/wireless/core.c:307 [inline]
 cfg80211_rfkill_block_work+0x21/0x30 net/wireless/core.c:319
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/19 22:26 net-next da114122b831 79512909 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in ieee80211_do_stop
* Struck through repros no longer work on HEAD.