WARNING in __ieee80211_suspend

Status: upstream: reported on 2026/09/23 04:13
Reported-by: syzbot+adbc3be286f0aa5d088a@syzkaller.appspotmail.com
First crash: 32d, last: 22d
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __ieee80211_suspend prio:low wireless -1 syz, C 138 34d 677d 26/29 upstream: reported C repro on 2024/12/17 17:48
linux-6.6 WARNING in __ieee80211_suspend -1 1 37d 37d 0/2 upstream: reported on 2026/09/18 04:57

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 21509 at net/mac80211/pm.c:169 __ieee80211_suspend+0x9c2/0xd40 net/mac80211/pm.c:169
Modules linked in:
CPU: 0 PID: 21509 Comm: syz.4.4086 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__ieee80211_suspend+0x9c2/0xd40 net/mac80211/pm.c:169
Code: be ff ff 00 00 4c 89 e7 ba 04 00 00 00 31 c9 e8 c4 3b f0 ff 89 e8 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 9e 0f 14 f8 <0f> 0b e9 63 fe ff ff e8 92 0f 14 f8 0f 0b e9 c2 fc ff ff e8 86 0f
RSP: 0018:ffffc900030dfbc0 EFLAGS: 00010283
RAX: ffffffff89650502 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9001341a000 RSI: 000000000000ca14 RDI: 000000000000ca15
RBP: ffff888023a92880 R08: ffffffff8d8b1eef R09: 1ffffffff1b163dd
R10: dffffc0000000000 R11: fffffbfff1b163de R12: ffff888023a90e00
R13: ffff888023a9163b R14: ffff888023a92c20 R15: 0000000000000000
FS:  00007f5d2cf8d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1569229048 CR3: 00000000496de000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reset_write+0x75/0x200 net/mac80211/debugfs.c:430
 full_proxy_write+0x109/0x1c0 fs/debugfs/file.c:244
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5d2ed35159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d2cf8d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f5d2efbcfa0 RCX: 00007f5d2ed35159
RDX: 000000000000001c RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f5d2edcc06b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d2efbd038 R14: 00007f5d2efbcfa0 R15: 00007ffde4404148
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/02 22:33 linux-5.15.y 0248c33e835e 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __ieee80211_suspend
2026/09/23 04:12 linux-5.15.y 0248c33e835e 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __ieee80211_suspend
* Struck through repros no longer work on HEAD.