[Linux Kernel Bug] WARNING: locking bug in ext4_mb_use_preallocated
3 views
Skip to first unread message
Jiaming Zhang
Sep 11, 2025, 12:41:06 PMSep 11
to adilger...@dilger.ca, linux...@vger.kernel.org, ty...@mit.edu, linux-...@vger.kernel.org, syzk...@googlegroups.com
Dear Linux kernel developers and maintainers:
We are writing to report a kernel WARNING in ext4_mb_use_preallocated,
discovered with our modified version of syzkaller.
This issue was initially found in kernel v6.17-rc5 (commit
76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c). Unfortunately, we do not
have a stable C or Syz program to reproduce this warning. We are
actively analyzing the root cause and working to create a reliable
reproducer, which we will share as soon as it is available.
Attached are the kernel console output, .config file, and formatted
bug reports (formatted by syz-symbolize) for your analysis. Please let
us know if any further information would be helpful.
Best regards,
Jiaming Zhang
We are writing to report a kernel WARNING in ext4_mb_use_preallocated,
discovered with our modified version of syzkaller.
This issue was initially found in kernel v6.17-rc5 (commit
76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c). Unfortunately, we do not
have a stable C or Syz program to reproduce this warning. We are
actively analyzing the root cause and working to create a reliable
reproducer, which we will share as soon as it is available.
Attached are the kernel console output, .config file, and formatted
bug reports (formatted by syz-symbolize) for your analysis. Please let
us know if any further information would be helpful.
Best regards,
Jiaming Zhang
Reply all
Reply to author
Forward
0 new messages