[PATCH] time: Fix overwrite err unexpected in clock_adjtime32
From: Chen Jun
Date: Mon Apr 12 2021 - 08:48:59 EST
the correct error is covered by put_old_timex32.
Fixes: f1f1d5ebd10f ("posix-timers: Introduce a syscall for clock tuning.")
Signed-off-by: Chen Jun <chenjun102@xxxxxxxxxx>
---
kernel/time/posix-timers.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c
index bf540f5a..dd5697d 100644
--- a/kernel/time/posix-timers.c
+++ b/kernel/time/posix-timers.c
@@ -1191,8 +1191,8 @@ SYSCALL_DEFINE2(clock_adjtime32, clockid_t, which_clock,
err = do_clock_adjtime(which_clock, &ktx);
- if (err >= 0)
- err = put_old_timex32(utp, &ktx);
+ if (err >= 0 && put_old_timex32(utp, &ktx))
+ return -EFAULT;
return err;
}
--
2.9.4