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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-08-10 16:00:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-25 12:45:05 +0300 |
| commit | 1d04f5d855eb0708620a49c66fd2e7d535baa411 (patch) | |
| tree | ba8d9d82ea0ea0eac2fc92b82daf48a98df3ef3a /drivers/gpu/drm/i915 | |
| parent | 60bfd51fed8bff9eac95c22a04387ccd8caf5ea9 (diff) | |
| download | linux-1d04f5d855eb0708620a49c66fd2e7d535baa411.tar.xz | |
rds: add missing barrier to release_refill
commit 9f414eb409daf4f778f011cf8266d36896bb930b upstream.
The functions clear_bit and set_bit do not imply a memory barrier, thus it
may be possible that the waitqueue_active function (which does not take
any locks) is moved before clear_bit and it could miss a wakeup event.
Fix this bug by adding a memory barrier after clear_bit.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/i915')
0 files changed, 0 insertions, 0 deletions