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| author | Sasha Levin <levinsasha928@gmail.com> | 2012-05-10 22:01:44 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-11 00:06:44 +0200 |
| commit | 93278814d3590eba0ee360b8d69a35c7f2203ea8 (patch) | |
| tree | 17784192015e71464f1064af2b071c8cd7fe7f13 /mm/Kconfig.debug | |
| parent | proc/pid/pagemap: correctly report non-present ptes and holes between vmas (diff) | |
| download | linux-93278814d3590eba0ee360b8d69a35c7f2203ea8.tar.xz linux-93278814d3590eba0ee360b8d69a35c7f2203ea8.zip | |
mm: fix division by 0 in percpu_pagelist_fraction()
percpu_pagelist_fraction_sysctl_handler() has only considered -EINVAL as
a possible error from proc_dointvec_minmax().
If any other error is returned, it would proceed to divide by zero since
percpu_pagelist_fraction wasn't getting initialized at any point. For
example, writing 0 bytes into the proc file would trigger the issue.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/Kconfig.debug')
0 files changed, 0 insertions, 0 deletions