WARNING in ieee80211_mgd_probe_ap_send (2)

Status: upstream: reported on 2026/08/08 07:43
Reported-by: syzbot+b7eb5454d1bbd0ad507f@syzkaller.appspotmail.com
First crash: 12d, last: 12h06m
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_mgd_probe_ap_send (3) prio:low wireless -1 syz, C 52 9d18h 271d 0/29 upstream: reported C repro on 2025/11/22 00:06
upstream WARNING in ieee80211_mgd_probe_ap_send (2) wireless -1 26 387d 656d 0/29 auto-obsoleted due to no activity on 2025/11/06 05:42
linux-5.15 WARNING in ieee80211_mgd_probe_ap_send origin:lts-only -1 syz, C done 5 180d 874d 0/3 auto-obsoleted due to no activity on 2026/06/01 06:52
upstream WARNING in ieee80211_mgd_probe_ap_send wireless -1 1 1614d 1610d 0/29 auto-closed as invalid on 2022/07/18 10:06
linux-6.6 WARNING in ieee80211_mgd_probe_ap_send origin:lts-only -1 syz, C inconclusive 8 14d 423d 0/2 upstream: reported C repro on 2025/06/23 06:48

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4514 at net/mac80211/mlme.c:2557 ieee80211_mgd_probe_ap_send+0x5aa/0x670 net/mac80211/mlme.c:2557
Modules linked in:
CPU: 1 PID: 4514 Comm: kworker/u4:14 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: phy12 ieee80211_beacon_connection_loss_work
RIP: 0010:ieee80211_mgd_probe_ap_send+0x5aa/0x670 net/mac80211/mlme.c:2557
Code: 5c 19 1b f8 48 8b 3c 24 48 81 c7 88 0d 00 00 4c 89 f6 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d e9 2b 37 0a f8 e8 36 19 1b f8 <0f> 0b e9 74 fb ff ff e8 2a 19 1b f8 0f 0b e9 42 ff ff ff e8 1e 19
RSP: 0000:ffffc900034bfbb0 EFLAGS: 00010293
RAX: ffffffff895de45a RBX: ffff88805de10c80 RCX: ffff88801d7f0000
RDX: 0000000000000000 RSI: ffffffff8a2b3e80 RDI: ffffffff8a7a4280
RBP: 1ffff1100bbc2251 R08: ffffffff8d8b18ef R09: 1ffffffff1b1631d
R10: dffffc0000000000 R11: fffffbfff1b1631e R12: ffff8880614ad4b8
R13: ffff88805de11288 R14: 0000000000000002 R15: ffff88805de11c78
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555905344e8 CR3: 0000000061c0a000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 ieee80211_mgd_probe_ap+0x2b8/0x320 net/mac80211/mlme.c:2640
 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 (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/19 22:45 linux-5.15.y 0eb903b5b519 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_mgd_probe_ap_send
2026/08/16 02:48 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_mgd_probe_ap_send
2026/08/16 02:48 linux-5.15.y aabd761612db 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_mgd_probe_ap_send
2026/08/10 22:54 linux-5.15.y aabd761612db 508909ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_mgd_probe_ap_send
2026/08/08 07:42 linux-5.15.y aabd761612db 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in ieee80211_mgd_probe_ap_send
* Struck through repros no longer work on HEAD.