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authorThomas Gleixner <tglx@linutronix.de>2007-06-23 05:48:40 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-24 15:08:53 -0400
commita06381fec77bf88ec6c5eb6324457cb04e9ffd69 (patch)
tree0762df31cf5e20cc52705cf7960b065922eeb1f3 /kernel
parentb2510b1696730307e7a388ea04132236ab45ac20 (diff)
FUTEX: Restore the dropped ERSCH fix
The return value of futex_find_get_task() needs to be -ESRCH in case that the search fails. This was part of the original futex fixes and got accidentally dropped, when the futex-tidy-up patch was split out. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Stable Team <stable@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/futex.c14
1 files changed, 6 insertions, 8 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index df248f5e0836..45490bec5831 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -409,14 +409,12 @@ static struct task_struct * futex_find_get_task(pid_t pid)
409 409
410 rcu_read_lock(); 410 rcu_read_lock();
411 p = find_task_by_pid(pid); 411 p = find_task_by_pid(pid);
412 if (!p) 412
413 goto out_unlock; 413 if (!p || ((current->euid != p->euid) && (current->euid != p->uid)))
414 if ((current->euid != p->euid) && (current->euid != p->uid)) { 414 p = ERR_PTR(-ESRCH);
415 p = NULL; 415 else
416 goto out_unlock; 416 get_task_struct(p);
417 } 417
418 get_task_struct(p);
419out_unlock:
420 rcu_read_unlock(); 418 rcu_read_unlock();
421 419
422 return p; 420 return p;