diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-08-08 14:03:51 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-08-08 14:04:17 -0700 |
| commit | e47fd9beb1cec00f43077d6b6238c8d30bd03ecf (patch) | |
| tree | 504747e4a88042565ad7957260915242ff687b61 /drivers/gpu/drm/drm_fb_helper.c | |
| parent | 91d516d4de48532d967a77967834e00c8c53dfe6 (diff) | |
| parent | ee9a43b7cfe2d8a3520335fea7d8ce71b8cabd9d (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts or adjacent changes.
Link: https://patch.msgid.link/20240808170148.3629934-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 18565ec68451..56ac37ea2f27 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -624,6 +624,17 @@ static void drm_fb_helper_add_damage_clip(struct drm_fb_helper *helper, u32 x, u static void drm_fb_helper_damage(struct drm_fb_helper *helper, u32 x, u32 y, u32 width, u32 height) { + /* + * This function may be invoked by panic() to flush the frame + * buffer, where all CPUs except the panic CPU are stopped. + * During the following schedule_work(), the panic CPU needs + * the worker_pool lock, which might be held by a stopped CPU, + * causing schedule_work() and panic() to block. Return early on + * oops_in_progress to prevent this blocking. + */ + if (oops_in_progress) + return; + drm_fb_helper_add_damage_clip(helper, x, y, width, height); schedule_work(&helper->damage_work); |