This ioctl function passes a 64-bit time argument but then performs a computation with a 32-bit get_seconds() value.
In order to avoid overflow here, this changes the code to use 64-bit math and ktime_get_real_seconds().
Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/staging/lustre/lnet/lnet/api-ni.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/lustre/lnet/lnet/api-ni.c b/drivers/staging/lustre/lnet/lnet/api-ni.c index 7fab03bee1ea..c368cf561b9d 100644 --- a/drivers/staging/lustre/lnet/lnet/api-ni.c +++ b/drivers/staging/lustre/lnet/lnet/api-ni.c @@ -1343,6 +1343,7 @@ LNetCtl(unsigned int cmd, void *arg) lnet_process_id_t id = {0}; lnet_ni_t *ni; int rc; + unsigned long secs_passed;
LASSERT(the_lnet.ln_init); LASSERT(the_lnet.ln_refcount > 0); @@ -1370,10 +1371,9 @@ LNetCtl(unsigned int cmd, void *arg) &data->ioc_nid, &data->ioc_flags, &data->ioc_priority); case IOC_LIBCFS_NOTIFY_ROUTER: + secs_passed = (ktime_get_real_seconds() - data->ioc_u64[0]); return lnet_notify(NULL, data->ioc_nid, data->ioc_flags, - cfs_time_current() - - cfs_time_seconds(get_seconds() - - (time_t)data->ioc_u64[0])); + jiffies - secs_passed * HZ);
case IOC_LIBCFS_PORTALS_COMPATIBILITY: /* This can be removed once lustre stops calling it */