syzbot
WARNING in ieee80211_request_ibss_scan (2)
Status:
upstream: reported syz repro on 2026/01/20 08:16
Bug presence:
origin:lts-only
[Documentation on labels]
Reported-by: syzbot+fc4e8edf133b1b2d6cf3@syzkaller.appspotmail.com
First crash: 201d, last: 41d
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Fix bisection attempts (1)
Sample crash report:
wlan1: Trigger new scan to find an IBSS to join
------------[ cut here ]------------
WARNING: CPU: 0 PID: 144 at net/mac80211/scan.c:1219 ieee80211_request_ibss_scan+0xc7c/0xda0 net/mac80211/scan.c:1219
Modules linked in:
CPU: 0 PID: 144 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:ieee80211_request_ibss_scan+0xc7c/0xda0 net/mac80211/scan.c:1219
Code: 4c 89 ff e8 d6 c5 ff ff 89 c3 48 8b 7c 24 30 e8 3a 2e 81 00 89 d8 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 64 20 35 f8 <0f> 0b bb f0 ff ff ff eb d7 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 91
RSP: 0018:ffffc900016af9a0 EFLAGS: 00010293
RAX: ffffffff894415ac RBX: ffff888020222a80 RCX: ffff88801be6d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc900016af767 R09: 1ffff920002d5eec
R10: dffffc0000000000 R11: fffff520002d5eed R12: ffff888020225e70
R13: ffff888020220e40 R14: 0000000000000001 R15: ffff88805c06cc80
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000039ff6d775000 CR3: 000000001df33000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ieee80211_sta_find_ibss net/mac80211/ibss.c:-1 [inline]
ieee80211_ibss_work+0xe05/0x10e0 net/mac80211/ibss.c:1710
cfg80211_wiphy_work+0x221/0x260 net/wireless/core.c:433
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
* Struck through repros no longer work on HEAD.