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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: 892d, last: 836d
▶ ▼ Similar bugs (7)
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 C error 260 23h30m 86d 21/29 upstream: reported C repro on 2025/05/11 08:46
linux-6.1 VFS: Busy inodes after unmount (use-after-free) origin:lts-only 2 C inconclusive 1659 9d12h 871d 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 C error done 2 790d 892d 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 C done inconclusive 1 892d 892d 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 2 C 3 3d19h 7d07h 0/2 upstream: reported C repro on 2025/07/29 23:52
upstream VFS: Busy inodes after unmount (use-after-free) bcachefs 2 C error 55684 92d 923d 28/29 fixed on 2025/05/06 15:33
linux-5.15 VFS: Busy inodes after unmount (use-after-free) missing-backport origin:upstream 2 C unreliable 2345 9d08h 870d 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.