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| author | Oleg Nesterov | 2009-07-05 21:08:26 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2009-07-06 22:57:04 +0200 |
| commit | 793285fcafce4719a05e0c99fa74b188157fe7fe (patch) | |
| tree | 3395530c1d4e604beac506c703b3093bb13f23ee /kernel/ptrace.c | |
| parent | linux/sysrq.h needs linux/errno.h (diff) | |
| download | kernel-qcow2-linux-793285fcafce4719a05e0c99fa74b188157fe7fe.tar.gz kernel-qcow2-linux-793285fcafce4719a05e0c99fa74b188157fe7fe.tar.xz kernel-qcow2-linux-793285fcafce4719a05e0c99fa74b188157fe7fe.zip | |
cred_guard_mutex: do not return -EINTR to user-space
do_execve() and ptrace_attach() return -EINTR if
mutex_lock_interruptible(->cred_guard_mutex) fails.
This is not right, change the code to return ERESTARTNOINTR.
Perhaps we should also change proc_pid_attr_write().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 61c78b2c07ba..082c320e4dbf 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -181,8 +181,8 @@ int ptrace_attach(struct task_struct *task) * interference; SUID, SGID and LSM creds get determined differently * under ptrace. */ - retval = mutex_lock_interruptible(&task->cred_guard_mutex); - if (retval < 0) + retval = -ERESTARTNOINTR; + if (mutex_lock_interruptible(&task->cred_guard_mutex)) goto out; task_lock(task); |