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

Status: upstream: reported C repro on 2023/03/19 11:46
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+d5fb8af502fef70f9aa1@syzkaller.appspotmail.com
First crash: 612d, last: 6h12m
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2024/01/30 linux-5.15.y (ToT) 6139f2a02fe0 C [report] kernel BUG in close_ctree
2023/05/04 upstream (ToT) fa31fc82fb77 C [report] VFS: Busy inodes after unmount (use-after-free)
2024/01/30 upstream (ToT) 41bccc98fb79 C Didn't crash
▶ ▼ Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 VFS: Busy inodes after unmount (use-after-free) C 4 578d 634d 0/2 auto-obsoleted due to no activity on 2023/08/20 15:35
linux-6.1 VFS: Busy inodes after unmount (use-after-free) origin:lts-only C inconclusive 788 6h16m 613d 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 C error done 2 532d 634d 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) C done inconclusive 1 634d 634d 0/2 auto-obsoleted due to no activity on 2023/06/25 23:02
upstream VFS: Busy inodes after unmount (use-after-free) ocfs2 C error 28733 13m 665d 0/28 upstream: reported C repro on 2023/01/25 10:43
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/02/02 08:13 7h06m fix candidate upstream OK (1) job log
2024/01/24 11:12 0m bisect fix linux-5.15.y error job log

Sample crash report:
VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds.  Have a nice day...

Crashes (1551):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/03/19 22:42 linux-5.15.y 8020ae3c051d 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/12 10:41 linux-5.15.y 3c17fc483905 75bb1b32 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/08/03 15:20 linux-5.15.y 7e89efd3ae1c 1786a2a8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2023/07/30 04:16 linux-5.15.y 09996673e313 92476829 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2023/08/13 16:37 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2023/06/27 09:43 linux-5.15.y f67653019430 4cd5bb25 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/21 02:39 linux-5.15.y 0a51d2d4527b 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/20 20:20 linux-5.15.y 0a51d2d4527b 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/20 14:29 linux-5.15.y 0a51d2d4527b 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/20 14:21 linux-5.15.y 0a51d2d4527b 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/19 18:37 linux-5.15.y 0a51d2d4527b 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/19 06:15 linux-5.15.y 0a51d2d4527b 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/19 01:10 linux-5.15.y 0a51d2d4527b 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/18 12:30 linux-5.15.y 0a51d2d4527b e7bb5d6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/17 17:16 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/17 17:09 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/17 08:44 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/16 15:24 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/15 20:04 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/15 12:59 linux-5.15.y d98fd109f827 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/15 12:56 linux-5.15.y d98fd109f827 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/15 06:56 linux-5.15.y d98fd109f827 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/15 04:21 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 23:27 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 22:12 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 16:20 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 15:06 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 09:23 linux-5.15.y 3c17fc483905 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/14 08:33 linux-5.15.y 3c17fc483905 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
2024/11/19 23:30 linux-5.15.y 0a51d2d4527b 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/19 15:53 linux-5.15.y 0a51d2d4527b 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/19 15:24 linux-5.15.y 0a51d2d4527b 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/19 00:07 linux-5.15.y 0a51d2d4527b 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/18 23:25 linux-5.15.y 0a51d2d4527b e7bb5d6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/18 10:29 linux-5.15.y 0a51d2d4527b e7bb5d6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/18 08:47 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/18 08:20 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/18 04:44 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/17 21:52 linux-5.15.y 0a51d2d4527b cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/17 05:13 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/17 01:04 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 23:24 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 14:20 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 10:11 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 09:22 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 08:06 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 08:05 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/16 06:55 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/15 18:35 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/14 14:16 linux-5.15.y d98fd109f827 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2024/11/14 07:09 linux-5.15.y 3c17fc483905 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 VFS: Busy inodes after unmount (use-after-free)
2023/03/19 11:46 linux-5.15.y 8020ae3c051d 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan VFS: Busy inodes after unmount (use-after-free)
* Struck through repros no longer work on HEAD.