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| author | Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> | 2014-06-04 16:05:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-30 20:11:53 -0700 |
| commit | 19801fb4a801cec39a70ff9c0a9c9023bd42a1a1 (patch) | |
| tree | 127172ed46b9b09327468771a367a30d79da7127 /kernel/kthread.c | |
| parent | 9dbfe4e4a6b45aa5d5e67407445cf7bd4bcffcfc (diff) | |
| download | lwn-19801fb4a801cec39a70ff9c0a9c9023bd42a1a1.tar.gz lwn-19801fb4a801cec39a70ff9c0a9c9023bd42a1a1.zip | |
kthread: fix return value of kthread_create() upon SIGKILL.
commit 8fe6929cfd43c44834858a53e129ffdc7c166298 upstream.
Commit 786235eeba0e ("kthread: make kthread_create() killable") meant
for allowing kthread_create() to abort as soon as killed by the
OOM-killer. But returning -ENOMEM is wrong if killed by SIGKILL from
userspace. Change kthread_create() to return -EINTR upon SIGKILL.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
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/kthread.c')
| -rw-r--r-- | kernel/kthread.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index b5ae3ee860a9..f6249f9ab33e 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -262,7 +262,7 @@ static void create_kthread(struct kthread_create_info *create) * kthread_stop() has been called). The return value should be zero * or a negative error number; it will be passed to kthread_stop(). * - * Returns a task_struct or ERR_PTR(-ENOMEM). + * Returns a task_struct or ERR_PTR(-ENOMEM) or ERR_PTR(-EINTR). */ struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), void *data, int node, @@ -298,7 +298,7 @@ struct task_struct *kthread_create_on_node(int (*threadfn)(void *data), * that thread. */ if (xchg(&create->done, NULL)) - return ERR_PTR(-ENOMEM); + return ERR_PTR(-EINTR); /* * kthreadd (or new kernel thread) will call complete() * shortly. |