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| author | Dave Jones <davej@redhat.com> | 2014-04-07 15:39:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-07 16:36:10 -0700 |
| commit | 16caed319604609a5579df132fce362a456170d7 (patch) | |
| tree | 4957342fcb459c2821297167362616ed38ce202c /fs/proc | |
| parent | b06dd879f5db33c1d7f5ab516ea671627f99c0c9 (diff) | |
| download | lwn-16caed319604609a5579df132fce362a456170d7.tar.gz lwn-16caed319604609a5579df132fce362a456170d7.zip | |
fault-injection: set bounds on what /proc/self/make-it-fail accepts.
/proc/self/make-it-fail is a boolean, but accepts any number, including
negative ones. Change variable to unsigned, and cap upper bound at 1.
[akpm@linux-foundation.org: don't make make_it_fail unsigned]
Signed-off-by: Dave Jones <davej@fedoraproject.org>
Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 8da60e768b42..6b7087e2e8fb 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1236,6 +1236,9 @@ static ssize_t proc_fault_inject_write(struct file * file, make_it_fail = simple_strtol(strstrip(buffer), &end, 0); if (*end) return -EINVAL; + if (make_it_fail < 0 || make_it_fail > 1) + return -EINVAL; + task = get_proc_task(file_inode(file)); if (!task) return -ESRCH; |