WARNING in ieee80211_do_stop

Status: upstream: reported on 2026/09/13 18:40
Reported-by: syzbot+66b01a29a6b06bd64cd2@syzkaller.appspotmail.com
First crash: 26d, last: 5d05h
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_do_stop wireless -1 1 1547d 1543d 0/29 auto-obsoleted due to no activity on 2022/09/13 22:46
linux-6.1 WARNING in ieee80211_do_stop -1 29 15h33m 28d 0/3 upstream: reported on 2026/09/12 06:32
upstream WARNING in ieee80211_do_stop (2) wireless -1 5 817d 820d 0/29 auto-obsoleted due to no activity on 2024/10/22 18:25
upstream WARNING in ieee80211_do_stop (3) wireless -1 6 270d 412d 0/29 auto-obsoleted due to no activity on 2026/04/23 01:51

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11604 at net/mac80211/iface.c:530 ieee80211_do_stop+0x1ae9/0x2030 net/mac80211/iface.c:530
Modules linked in:
CPU: 1 PID: 11604 Comm: syz.2.1653 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:ieee80211_do_stop+0x1ae9/0x2030 net/mac80211/iface.c:530
Code: f7 49 81 c5 d8 06 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 fd 04 00 00 41 ff 4d 00 e9 ed f5 ff ff e8 d7 49 80 f7 <0f> 0b e9 af e8 ff ff e8 cb 49 80 f7 43 0f b6 04 27 84 c0 0f 85 12
RSP: 0018:ffffc9000ba7f5e0 EFLAGS: 00010287
RAX: ffffffff8a0746d9 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9000d413000 RSI: 0000000000022f87 RDI: 0000000000022f88
RBP: ffffc9000ba7f7c8 R08: ffffc9000ba7f487 R09: 1ffff9200174fe90
R10: dffffc0000000000 R11: fffff5200174fe91 R12: dffffc0000000000
R13: ffffc9000ba7f730 R14: 0000000000000001 R15: ffff88805c26a930
FS:  00007fcaaf7556c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c25878e CR3: 000000007815c000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 ieee80211_stop+0x423/0x490 net/mac80211/iface.c:815
 __dev_close_many+0x1d5/0x2b0 net/core/dev.c:1603
 __dev_close net/core/dev.c:1615 [inline]
 __dev_change_flags+0x2cd/0x6a0 net/core/dev.c:8745
 dev_change_flags+0x7c/0x1a0 net/core/dev.c:8819
 devinet_ioctl+0x949/0x1d70 net/ipv4/devinet.c:1177
 inet_ioctl+0x42b/0x560 net/ipv4/af_inet.c:1000
 sock_do_ioctl+0xfc/0x310 net/socket.c:1220
 sock_ioctl+0x5be/0x7e0 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcaae79e159
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:00007fcaaf755028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcaaea25fa0 RCX: 00007fcaae79e159
RDX: 0000200000000100 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 00007fcaae83506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcaaea26038 R14: 00007fcaaea25fa0 R15: 00007ffc5bd8f388
 </TASK>

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/05 07:37 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/10/03 22:36 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/10/03 22:36 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/10/03 22:35 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/10/03 22:35 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/10/02 21:27 linux-6.6.y 79643295eba1 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/09/29 22:13 linux-6.6.y 79643295eba1 328436b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/09/23 05:43 linux-6.6.y 79643295eba1 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
2026/09/13 18:39 linux-6.6.y 8b73de7da85f 70a60e12 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in ieee80211_do_stop
* Struck through repros no longer work on HEAD.