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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2021-11-05 21:45:12 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 21:30:43 +0100 |
| commit | a88e03cf3d190cf46bc4063a9b7efe87590de5f4 (patch) | |
| tree | 1ebbdecc2f00893fbcdfc066c0bedf04731265bc /Documentation/admin-guide/blockdev | |
| parent | zram_drv: allow reclaim on bio_alloc (diff) | |
| download | linux-a88e03cf3d190cf46bc4063a9b7efe87590de5f4.tar.xz linux-a88e03cf3d190cf46bc4063a9b7efe87590de5f4.zip | |
zram: off by one in read_block_state()
snprintf() returns the number of bytes it would have printed if there
were space. But it does not count the NUL terminator. So that means
that if "count == copied" then this has already overflowed by one
character.
This bug likely isn't super harmful in real life.
Link: https://lkml.kernel.org/r/20210916130404.GA25094@kili
Fixes: c0265342bff4 ("zram: introduce zram memory tracking")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide/blockdev')
0 files changed, 0 insertions, 0 deletions