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| author | Shakeel Butt <shakeelb@google.com> | 2019-01-08 15:22:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-16 22:03:23 +0100 |
| commit | 278ad4849088e370af59c11e6c7b32d31d02bd7a (patch) | |
| tree | f77a2b5a5a466e5633c5bbaa786ed3dc747caf41 /kernel | |
| parent | 1ef2da729fa7c08f1271194de61d9f863efd6c7e (diff) | |
| download | linux-278ad4849088e370af59c11e6c7b32d31d02bd7a.tar.gz linux-278ad4849088e370af59c11e6c7b32d31d02bd7a.tar.bz2 linux-278ad4849088e370af59c11e6c7b32d31d02bd7a.zip | |
fork, memcg: fix cached_stacks case
commit ba4a45746c362b665e245c50b870615f02f34781 upstream.
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -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 3c16bc490583..906cd0c13d15 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -221,6 +221,7 @@ 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; } |