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| author | Wen Congyang <wency@cn.fujitsu.com> | 2012-09-17 23:08:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-18 00:00:37 +0200 |
| commit | 18b48d5873a6fc8e0e6044ddb572fcda26988f19 (patch) | |
| tree | 0f26f8c1e70b8d07b1e45b36f0dfc1b1c7a60131 /include | |
| parent | fs/proc: fix potential unregister_sysctl_table hang (diff) | |
| download | linux-18b48d5873a6fc8e0e6044ddb572fcda26988f19.tar.xz linux-18b48d5873a6fc8e0e6044ddb572fcda26988f19.zip | |
memory hotplug: reset pgdat->kswapd to NULL if creating kernel thread fails
If kthread_run() fails, pgdat->kswapd contains errno. When we stop this
thread, we only check whether pgdat->kswapd is NULL and access it. If
it contains errno, it will cause page fault. Reset pgdat->kswapd to
NULL when creating kernel thread fails can avoid this problem.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.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 'include')
0 files changed, 0 insertions, 0 deletions