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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2017-02-27 14:27:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-27 18:43:45 -0800 |
| commit | e3b5a342ab9643b4079c8d417d90519388469341 (patch) | |
| tree | df7915864309651c20887fe3f9d7cf20fb9b8ada /include/linux/pid.h | |
| parent | 369f2679f7e73996bf29ecd3ec79df3cce1be27d (diff) | |
| download | linux-stable-e3b5a342ab9643b4079c8d417d90519388469341.tar.gz linux-stable-e3b5a342ab9643b4079c8d417d90519388469341.tar.bz2 linux-stable-e3b5a342ab9643b4079c8d417d90519388469341.zip | |
include/linux/pid.h: use for_each_thread() in do_each_pid_thread()
while_each_pid_thread() is using while_each_thread(), which is unsafe
under RCU lock according to commit 0c740d0afc3b ("introduce
for_each_thread() to replace the buggy while_each_thread()"). Use
for_each_thread() in do_each_pid_thread() which is safe under RCU lock.
Link: http://lkml.kernel.org/r/201702011947.DBD56740.OMVHOLOtSJFFFQ@I-love.SAKURA.ne.jp
Link: http://lkml.kernel.org/r/1486041779-4401-2-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/pid.h')
| -rw-r--r-- | include/linux/pid.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/pid.h b/include/linux/pid.h index 23705a53abba..298ead5512e5 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -191,10 +191,10 @@ pid_t pid_vnr(struct pid *pid); #define do_each_pid_thread(pid, type, task) \ do_each_pid_task(pid, type, task) { \ struct task_struct *tg___ = task; \ - do { + for_each_thread(tg___, task) { #define while_each_pid_thread(pid, type, task) \ - } while_each_thread(tg___, task); \ + } \ task = tg___; \ } while_each_pid_task(pid, type, task) #endif /* _LINUX_PID_H */ |