syzbot


WARNING in ieee80211_request_ibss_scan

Status: upstream: reported on 2025/01/09 17:09
Reported-by: syzbot+ff9c38fbab99453919d5@syzkaller.appspotmail.com
First crash: 158d, last: 3d13h
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_request_ibss_scan wireless 429 9d02h 160d 0/28 upstream: reported on 2025/01/07 16:25
linux-6.1 WARNING in ieee80211_request_ibss_scan 12 23h33m 78d 0/3 upstream: reported on 2025/03/30 22:02

Sample crash report:
wlan0: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge)
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5052 at net/mac80211/scan.c:1219 ieee80211_request_ibss_scan+0xc64/0xd80 net/mac80211/scan.c:1219
Modules linked in:
CPU: 1 PID: 5052 Comm: kworker/u4:65 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: phy9 ieee80211_iface_work
RIP: 0010:ieee80211_request_ibss_scan+0xc64/0xd80 net/mac80211/scan.c:1219
Code: 4c 89 ff e8 1e c6 ff ff 89 c3 48 8b 7c 24 30 e8 02 1c 7f 00 89 d8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 cc 14 4d f8 <0f> 0b bb f0 ff ff ff eb d7 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 9c
RSP: 0018:ffffc9000471fa10 EFLAGS: 00010293
RAX: ffffffff892aad54 RBX: 0000000000000000 RCX: ffff888025d20000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff520008e3efd
R10: fffff520008e3efd R11: 1ffff920008e3efc R12: ffff888077020da0
R13: ffff888077022a20 R14: 0000000000000001 R15: ffff88805f3ecc80
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005575d91dd950 CR3: 000000002af15000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ieee80211_sta_merge_ibss net/mac80211/ibss.c:1318 [inline]
 ieee80211_ibss_work+0xd85/0x10b0 net/mac80211/ibss.c:1713
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/14 02:12 linux-5.15.y 1c700860e8bc 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_request_ibss_scan
2025/02/25 12:28 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_request_ibss_scan
2025/01/15 01:44 linux-5.15.y 4735586da88e f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_request_ibss_scan
2025/01/15 01:44 linux-5.15.y 4735586da88e f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_request_ibss_scan
2025/01/15 01:44 linux-5.15.y 4735586da88e f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_request_ibss_scan
2025/06/07 04:57 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/06/07 04:56 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/06/07 04:56 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/05/28 18:59 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/05/15 15:10 linux-5.15.y 3b8db0e4f263 d6b2ee52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/05/07 12:53 linux-5.15.y 16fdf2c7111b 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/05/06 04:19 linux-5.15.y 16fdf2c7111b ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/05/03 02:45 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/04/26 06:10 linux-5.15.y f7347f400572 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/01/09 17:08 linux-5.15.y 4735586da88e 9220929f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in ieee80211_request_ibss_scan
* Struck through repros no longer work on HEAD.