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| author | Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2020-04-21 05:39:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 11:25:15 +0300 |
| commit | 928c796ffdd0e314353bf1ff604c82799d98ea55 (patch) | |
| tree | d0efc6f09e209e94f478f66b5755021274685d28 /fs/file_table.c | |
| parent | 8464622583fc9728bffeaa7f0b21f57d39e56308 (diff) | |
| download | linux-928c796ffdd0e314353bf1ff604c82799d98ea55.tar.xz | |
ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
commit c36a71b4e35ab35340facdd6964a00956b9fef0a upstream.
If eh->eh_max is 0, EXT_MAX_EXTENT/INDEX would evaluate to unsigned
(-1) resulting in illegal memory accesses. Although there is no
consistent repro, we see that generic/019 sometimes crashes because of
this bug.
Ran gce-xfstests smoke and verified that there were no regressions.
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20200421023959.20879-2-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/file_table.c')
0 files changed, 0 insertions, 0 deletions