WARNING: lock held when returning to user space in cfg80211_wext_siwgenie

Status: upstream: reported C repro on 2026/10/03 12:20
Reported-by: syzbot+516663279b40dfd4a718@syzkaller.appspotmail.com
First crash: 43d, last: 20h26m
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 WARNING: lock held when returning to user space in cfg80211_wext_siwgenie 4 syz, C 36 26d 43d 0/2 upstream: reported C repro on 2026/10/03 19:35
linux-5.15 WARNING: lock held when returning to user space in cfg80211_wext_siwgenie origin:lts-only 4 syz, C 76 20h17m 43d 0/3 upstream: reported C repro on 2026/10/03 12:26

Sample crash report:
================================================
WARNING: lock held when returning to user space!
syzkaller #0 Not tainted
------------------------------------------------
syz.0.17/4462 is leaving the kernel with locks still held!
1 lock held by syz.0.17/4462:
 #0: ffff88802769cd40 (&wdev->mtx){+.+.}-{3:3}, at: wdev_lock net/wireless/core.h:231 [inline]
 #0: ffff88802769cd40 (&wdev->mtx){+.+.}-{3:3}, at: cfg80211_wext_siwgenie+0xd4/0x3f0 net/wireless/wext-sme.c:340

Crashes (92):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/30 08:55 linux-6.1.y 79807e970724 b498adee .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/25 23:50 linux-6.1.y 79807e970724 1d9ca40b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 17:35 linux-6.1.y 79807e970724 432c0077 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 15:29 linux-6.1.y a500ba24937a 4f92358f .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/09 14:26 linux-6.1.y a500ba24937a b2734a59 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/04 02:16 linux-6.1.y a500ba24937a 57bbd979 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/14 23:54 linux-6.1.y c75b0cf0982c 819ebe34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/14 18:36 linux-6.1.y c75b0cf0982c 819ebe34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/14 15:15 linux-6.1.y c75b0cf0982c 819ebe34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/05 17:47 linux-6.1.y 08889840163e 2ee8459f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/05 17:46 linux-6.1.y 08889840163e 2ee8459f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/04 13:34 linux-6.1.y 08889840163e 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/03 22:22 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/11/03 10:24 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/30 04:48 linux-6.1.y 79807e970724 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/28 22:04 linux-6.1.y 79807e970724 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/26 05:16 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/26 05:09 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/26 02:52 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/25 22:45 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/21 02:33 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/20 11:58 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/20 06:55 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 23:29 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 23:19 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 23:19 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 23:17 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 23:16 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/19 00:51 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/18 14:47 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/18 14:47 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/18 02:59 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/18 02:59 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 22:37 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 22:37 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 22:34 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 22:34 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 22:34 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/17 10:20 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/15 21:05 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/15 10:44 linux-6.1.y a500ba24937a 8fb0ae89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 05:12 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 05:11 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 05:08 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 05:08 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/10 04:50 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/09 13:54 linux-6.1.y a500ba24937a b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/09 13:54 linux-6.1.y a500ba24937a b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
2026/10/03 12:19 linux-6.1.y a500ba24937a 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING: lock held when returning to user space in cfg80211_wext_siwgenie
* Struck through repros no longer work on HEAD.