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| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2009-08-03 11:48:19 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-04 10:16:41 +0200 |
| commit | 70d715fd0597f18528f389b5ac59102263067744 (patch) | |
| tree | eb3a4fb2a57a19fd1b93e9e3887d9ee7f6c1e0f6 | |
| parent | a33a052f19a21d727847391c8c1aff3fb221c472 (diff) | |
| download | lwn-70d715fd0597f18528f389b5ac59102263067744.tar.gz lwn-70d715fd0597f18528f389b5ac59102263067744.zip | |
posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW
Prevent calling do_nanosleep() with clockid
CLOCK_MONOTONIC_RAW, it may cause oops, such as NULL pointer
dereference.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: <stable@kernel.org>
LKML-Reference: <4A764FF3.50607@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | kernel/posix-timers.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c index 052ec4d195c7..d089d052c4a9 100644 --- a/kernel/posix-timers.c +++ b/kernel/posix-timers.c @@ -202,6 +202,12 @@ static int no_timer_create(struct k_itimer *new_timer) return -EOPNOTSUPP; } +static int no_nsleep(const clockid_t which_clock, int flags, + struct timespec *tsave, struct timespec __user *rmtp) +{ + return -EOPNOTSUPP; +} + /* * Return nonzero if we know a priori this clockid_t value is bogus. */ @@ -254,6 +260,7 @@ static __init int init_posix_timers(void) .clock_get = posix_get_monotonic_raw, .clock_set = do_posix_clock_nosettime, .timer_create = no_timer_create, + .nsleep = no_nsleep, }; register_posix_clock(CLOCK_REALTIME, &clock_realtime); |