syzbot


WARNING in ieee80211_request_ibss_scan

Status: upstream: reported on 2025/03/30 22:02
Reported-by: syzbot+93c6f86eb2bbd45d9861@syzkaller.appspotmail.com
First crash: 17d, last: 9d06h
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_request_ibss_scan wireless 313 1h30m 99d 0/28 upstream: reported on 2025/01/07 16:25
linux-5.15 WARNING in ieee80211_request_ibss_scan 5 50d 97d 0/3 upstream: reported on 2025/01/09 17:09

Sample crash report:
wlan1: Trigger new scan to find an IBSS to join
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4325 at net/mac80211/scan.c:1225 ieee80211_request_ibss_scan+0x83d/0x8e0 net/mac80211/scan.c:-1
Modules linked in:
CPU: 1 PID: 4325 Comm: kworker/u4:6 Not tainted 6.1.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: phy11 ieee80211_iface_work
RIP: 0010:ieee80211_request_ibss_scan+0x83d/0x8e0 net/mac80211/scan.c:1225
Code: 89 c3 4c 89 e7 e8 03 9d 8e 00 89 d8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 fd 9b 5e f7 e9 40 fb ff ff e8 f3 9b 5e f7 <0f> 0b bb f0 ff ff ff 4c 8b 64 24 28 eb ca 89 d9 80 e1 07 80 c1 03
RSP: 0018:ffffc90003fd7a30 EFLAGS: 00010293
RAX: ffffffff8a2c0e5d RBX: 0000000000000000 RCX: ffff888026609dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8a2c097c R09: fffffbfff1d41776
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000006
R13: 0000000000000c80 R14: 0000000000000c80 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f281bda7bac CR3: 00000000579ee000 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+0x1188/0x1480 net/mac80211/ibss.c:1705
 process_one_work+0x917/0x1260 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/07 19:21 linux-6.1.y 3dfebb87d7eb a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_request_ibss_scan
2025/04/07 19:21 linux-6.1.y 3dfebb87d7eb a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_request_ibss_scan
2025/04/07 19:21 linux-6.1.y 3dfebb87d7eb a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_request_ibss_scan
2025/04/07 19:21 linux-6.1.y 3dfebb87d7eb a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in ieee80211_request_ibss_scan
2025/03/30 23:09 linux-6.1.y 8e60a714ba3b d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_request_ibss_scan
2025/03/30 22:02 linux-6.1.y 8e60a714ba3b d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in ieee80211_request_ibss_scan
* Struck through repros no longer work on HEAD.