diff options
| author | Shakeel Butt <shakeelb@google.com> | 2019-01-08 15:22:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 14:50:11 +0100 |
| commit | 3ed8ca4d292117bd49e2d86a2a4a1fd709282459 (patch) | |
| tree | 44e3805ec028c822d2cf5eb320e1718864aad957 /kernel/fork.c | |
| parent | 66779aa306b37b3789e7acae0b60017b7c3a51d3 (diff) | |
fork, memcg: fix cached_stacks case
[ Upstream commit ba4a45746c362b665e245c50b870615f02f34781 ]
Commit 5eed6f1dff87 ("fork,memcg: fix crash in free_thread_stack on
memcg charge fail") fixes a crash caused due to failed memcg charge of
the kernel stack. However the fix misses the cached_stacks case which
this patch fixes. So, the same crash can happen if the memcg charge of
a cached stack is failed.
Link: http://lkml.kernel.org/r/20190102180145.57406-1-shakeelb@google.com
Fixes: 5eed6f1dff87 ("fork,memcg: fix crash in free_thread_stack on memcg charge fail")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Rik van Riel <riel@surriel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 5718c5decc55..1bd119530a49 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -216,6 +216,7 @@ static unsigned long *alloc_thread_stack_node(struct task_struct *tsk, int node) memset(s->addr, 0, THREAD_SIZE); tsk->stack_vm_area = s; + tsk->stack = s->addr; return s->addr; } |