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| author | Arnd Bergmann <arnd@arndb.de> | 2009-06-12 09:53:47 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2009-06-12 11:32:58 +0200 |
| commit | 5b02ee3d219f9e01b6e9146e25613822cfc2e5ce (patch) | |
| tree | 7ce9126738c3cf4b37d67170d0e4b34818c057a9 /fs/proc/base.c | |
| parent | 26a28fa4fea5b8c65713aa50c124f76a88c7924d (diff) | |
| parent | 8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff) | |
| download | linux-5b02ee3d219f9e01b6e9146e25613822cfc2e5ce.tar.bz2 | |
asm-generic: merge branch 'master' of torvalds/linux-2.6
Fixes a merge conflict against the x86 tree caused by a fix to
atomic.h which I renamed to atomic_long.h.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 3326bbf9ab95..1539e630c47d 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2128,9 +2128,15 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf, if (copy_from_user(page, buf, count)) goto out_free; + /* Guard against adverse ptrace interaction */ + length = mutex_lock_interruptible(&task->cred_guard_mutex); + if (length < 0) + goto out_free; + length = security_setprocattr(task, (char*)file->f_path.dentry->d_name.name, (void*)page, count); + mutex_unlock(&task->cred_guard_mutex); out_free: free_page((unsigned long) page); out: |