WARNING in cfg80211_scan_done (2)

Status: upstream: reported on 2026/08/22 22:13
Reported-by: syzbot+e5f3a69568b5f88f9222@syzkaller.appspotmail.com
First crash: 2d07h, last: 2d07h
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in cfg80211_scan_done -1 3 574d 576d 0/3 auto-obsoleted due to no activity on 2025/05/07 16:33
upstream WARNING in cfg80211_scan_done prio:high wireless -1 syz, C error error 102 10d 741d 0/29 upstream: reported C repro on 2024/08/13 14:03
linux-6.1 WARNING in cfg80211_scan_done (2) origin:upstream -1 syz error 5 140d 438d 0/3 upstream: reported syz repro on 2025/06/13 02:16
linux-5.15 WARNING in cfg80211_scan_done -1 2 520d 528d 0/3 auto-obsoleted due to no activity on 2025/06/30 10:14
linux-6.6 WARNING in cfg80211_scan_done -1 1 41d 41d 0/2 upstream: reported on 2026/07/15 05:27

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4322 at net/wireless/scan.c:1094 cfg80211_scan_done+0x2b3/0x440 net/wireless/scan.c:1093
Modules linked in:
CPU: 1 PID: 4322 Comm: kworker/u4:7 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: phy3 ieee80211_scan_work
RIP: 0010:cfg80211_scan_done+0x2b3/0x440 net/wireless/scan.c:1093
Code: 00 00 00 48 3b 44 24 18 75 68 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d9 77 49 f8 0f 0b e9 e9 fd ff ff e8 cd 77 49 f8 <0f> 0b e9 dd fe ff ff e8 c1 77 49 f8 0f 0b e9 38 fe ff ff 44 89 f9
RSP: 0018:ffffc900032dfad0 EFLAGS: 00010293
RAX: ffffffff892f85c3 RBX: ffff88805f955000 RCX: ffff88807b141dc0
RDX: 0000000000000000 RSI: ffffffff8a7a4260 RDI: ffffffff8a7a4220
RBP: 1ffff1100bf2aa0d R08: ffffffff8d8b18ef R09: 1ffffffff1b1631d
R10: dffffc0000000000 R11: fffffbfff1b1631e R12: ffff88805f955068
R13: 1ffff1100bf2aa0f R14: dffffc0000000000 R15: ffff8880739401b8
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f7f55bf40 CR3: 000000002aedb000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ieee80211_scan_completed+0x4e7/0x9d0 net/mac80211/scan.c:478
 ieee80211_scan_work+0xd1/0x1aa0 net/mac80211/scan.c:1163
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/22 22:12 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in cfg80211_scan_done
* Struck through repros no longer work on HEAD.