From: Andrei Vagin <[email protected]> timerfd_settime() accepts an absolute value of the experation time if TFD_TIMER_ABSTIME is specified. This value is in task's time namespace and has to be converted to the host's time namespace.
Signed-off-by: Andrei Vagin <[email protected]> Co-developed-by: Dmitry Safonov <[email protected]> Signed-off-by: Dmitry Safonov <[email protected]> --- fs/timerfd.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/timerfd.c b/fs/timerfd.c index 6a6fc8aa1de7..9b0c2f65e7e8 100644 --- a/fs/timerfd.c +++ b/fs/timerfd.c @@ -26,6 +26,7 @@ #include <linux/syscalls.h> #include <linux/compat.h> #include <linux/rcupdate.h> +#include <linux/time_namespace.h> struct timerfd_ctx { union { @@ -196,6 +197,8 @@ static int timerfd_setup(struct timerfd_ctx *ctx, int flags, } if (texp != 0) { + if (flags & TFD_TIMER_ABSTIME) + texp = timens_ktime_to_host(clockid, texp); if (isalarm(ctx)) { if (flags & TFD_TIMER_ABSTIME) alarm_start(&ctx->t.alarm, texp); -- 2.22.0
