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DescriptionAndreas Gruenbacher
2021-12-07 16:14:25 UTC
Description of problem:
The lseek system call for SEEK_HOLE can report an incorrect size for a hole at the end of a file. (This doesn't affect reads or writes.)
Version-Release number of selected component (if applicable):
All RHEL9.
How reproducible:
No reproducer (the upstream reproducer doesn't trigger on RHEL9), but we should be able to create one.
Additional info:
Upstream fix:
f3506eee81d1 gfs2: Fix length of holes reported at end-of-file
Comment 1Andreas Gruenbacher
2021-12-08 17:28:02 UTC
It turns out that the bug that commit f3506eee81d1 fixes is only visible at the filesystem / kernel trace point level; the lseek and FS_IOC_FIEMAP ioctl syscalls hide this filesystem misbehavior. I don't think a test case based on 'perf trace' would be very useful; please let me know if you think otherwise.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (new packages: kernel), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:3907