VFS: Busy inodes after unmount (use-after-free)

Status: auto-obsoleted due to no activity on 2023/08/20 15:35
Reported-by: syzbot+753d245e8fa96e237679@syzkaller.appspotmail.com
First crash: 1254d, last: 1198d
▶ ▼ Similar bugs (9)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream VFS: Busy inodes after unmount (use-after-free) (2) btrfs 2 syz, C error 277 336d 448d 29/29 fixed on 2025/09/04 16:57
linux-6.1 VFS: Busy inodes after unmount (use-after-free) origin:lts-only 2 syz, C inconclusive 4109 19m 1233d 0/3 upstream: reported C repro on 2023/03/18 09:53
android-5-15 VFS: Busy inodes after unmount (use-after-free) origin:downstream 2 syz, C error done 2 1152d 1254d 0/2 auto-obsoleted due to no activity on 2023/09/15 20:27
android-5-10 VFS: Busy inodes after unmount (use-after-free) 2 syz, C done inconclusive 1 1254d 1254d 0/2 auto-obsoleted due to no activity on 2023/06/25 23:02
linux-6.6 VFS: Busy inodes after unmount (use-after-free) origin:upstream missing-backport 2 syz, C inconclusive 1012 5d21h 369d 0/2 upstream: reported C repro on 2025/07/29 23:52
upstream VFS: Busy inodes after unmount (use-after-free) (3) fs 2 syz, C error 85 276d 306d 29/29 fixed on 2025/11/18 08:45
upstream VFS: Busy inodes after unmount (use-after-free) (4) prio:high jfs 2 syz, C error 52 1d16h 220d 0/29 upstream: reported C repro on 2025/12/25 14:06
upstream VFS: Busy inodes after unmount (use-after-free) fs 2 syz, C error 55684 454d 1285d 28/29 fixed on 2025/05/06 15:33
linux-5.15 VFS: Busy inodes after unmount (use-after-free) missing-backport origin:lts-only 2 syz, C done 3340 7h09m 1232d 0/3 upstream: reported C repro on 2023/03/19 11:46
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/07/01 16:57 48m retest repro android12-5.4 OK log

Sample crash report:
VFS: Busy inodes after unmount of ramfs. Self-destruct in 5 seconds.  Have a nice day...

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/25 22:18 android12-5.4 66c3e3ab77a2 ee50e71c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan VFS: Busy inodes after unmount (use-after-free)
2023/04/22 15:35 android12-5.4 0108362f3305 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan VFS: Busy inodes after unmount (use-after-free)
2023/04/18 19:53 android12-5.4 21086923c1e6 d931e9f0 .config console log report info ci2-android-5-4-kasan VFS: Busy inodes after unmount (use-after-free)
2023/03/23 16:38 android12-5.4 07edbcca3d39 f94b4a29 .config console log report info ci2-android-5-4-kasan VFS: Busy inodes after unmount (use-after-free)
* Struck through repros no longer work on HEAD.