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| author | Coly Li <colyli@suse.de> | 2019-02-09 12:53:07 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-02-09 07:18:32 -0700 |
| commit | dab71b2db98dcdd4657d151b01a7be88ce10f9d1 (patch) | |
| tree | a396e301c99ef2770c9725493a86f4257bef9f52 /include | |
| parent | 5b5fd3c94eef69dcfaa8648198e54c92e5687d6d (diff) | |
| download | linux-stable-dab71b2db98dcdd4657d151b01a7be88ce10f9d1.tar.gz linux-stable-dab71b2db98dcdd4657d151b01a7be88ce10f9d1.tar.bz2 linux-stable-dab71b2db98dcdd4657d151b01a7be88ce10f9d1.zip | |
bcache: fix input overflow to writeback_rate_minimum
dc->writeback_rate_minimum is type unsigned integer variable, it is set
via sysfs interface, and converte from input string to unsigned integer
by d_strtoul_nonzero(). When the converted input value is larger than
UINT_MAX, overflow to unsigned integer happens.
This patch fixes the overflow by using sysfs_strotoul_clamp() to
convert input string and limit the value in range [1, UINT_MAX], then
the overflow can be avoided.
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions