syzbot


WARNING in cfg80211_switch_netns

Status: upstream: reported on 2025/07/21 07:55
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+3515319a302224e081b4@syzkaller.appspotmail.com
First crash: 94d, last: 5d14h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in cfg80211_switch_netns 0 (1) 2025/07/21 07:55

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10064 at net/wireless/core.c:204 cfg80211_switch_netns+0x58a/0x5b0 net/wireless/core.c:204
Modules linked in:
CPU: 0 UID: 0 PID: 10064 Comm: kworker/u8:17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: netns cleanup_net
RIP: 0010:cfg80211_switch_netns+0x58a/0x5b0 net/wireless/core.c:204
Code: e1 07 38 c1 7c 8c 4c 89 e7 e8 d2 23 8b f7 eb 82 e8 3b 74 25 f7 e9 63 fe ff ff e8 31 74 25 f7 e9 59 fe ff ff e8 27 74 25 f7 90 <0f> 0b 90 e9 7f fd ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a1 fa
RSP: 0018:ffffc9001b41f840 EFLAGS: 00010293
RAX: ffffffff8a9acfc9 RBX: ffff888023938da0 RCX: ffff88802b438000
RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000
RBP: 00000000ffffffef R08: ffffffff8f9e1377 R09: 1ffffffff1f3c26e
R10: dffffc0000000000 R11: fffffbfff1f3c26f R12: ffff888023938720
R13: ffff88802d722980 R14: dffffc0000000000 R15: ffff888023938910
FS:  0000000000000000(0000) GS:ffff888125d0c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558f0e2808 CR3: 000000000df38000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cfg80211_pernet_exit+0xa2/0x140 net/wireless/core.c:1680
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (18):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/17 21:19 net-next 7e0d4c111369 7adf5298 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/17 07:37 net-next 7e0d4c111369 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/16 18:13 net-next ef672e4665dd 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/16 01:56 net-next 6033d2a2468e 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/15 09:26 net-next bdec4271e808 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/15 06:23 net-next bdec4271e808 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/13 06:53 net-next 18a7e218cfcd ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/13 01:07 net-next 18a7e218cfcd ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/10/10 20:06 net-next 18a7e218cfcd ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/09/22 01:14 net-next 312e6f7676e6 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/29 19:05 net-next 29828b81a46a 3e1beec6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/25 22:55 net-next 992e9f53a0db bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/18 03:23 net-next bab3ce404553 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/17 15:49 net-next bab3ce404553 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/12 15:20 net-next bc4c0a48bdad c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/08/09 01:30 net-next 37816488247d 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/07/23 15:20 net-next 56613001dfc9 e1dd4f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
2025/07/20 16:52 net-next 4701ee5044fb 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in cfg80211_switch_netns
* Struck through repros no longer work on HEAD.