search for: pipe_lock

Add pipe_lock/unlock for splice_write to avoid oops by following competition: (1) An application gets fds of a trace buffer, virtio-serial, pipe. (2) The application does fork() (3) The processes execute splice_read(trace buffer) and splice_write(virtio-serial) via same pipe. <parent>...

...om_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: yoshihiro.yunomae.ez at hitac...

...om_pipe_feed() by bug of any user application. These reports are written in each patch. Changes in V2: - Fix a locking problem for error Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: yoshihiro.yunomae.ez at hitac...

...e written in each patch. Changes in V2: - Fix a locking problem for error Changes in V3: - Add Reviewed-by lines and stable@ line in sign-off area Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: yoshihiro.yunomae.ez at hitac...

...e written in each patch. Changes in V2: - Fix a locking problem for error Changes in V3: - Add Reviewed-by lines and stable@ line in sign-off area Thanks! --- Yoshihiro YUNOMAE (2): [BUGFIX] virtio/console: Quit from splice_write if pipe->nrbufs is 0 [BUGFIX] virtio/console: Add pipe_lock/unlock for splice_write drivers/char/virtio_console.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) -- Yoshihiro YUNOMAE Software Platform Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: yoshihiro.yunomae.ez at hitac...

...!(rotation & DRM_REFLECT_X); - vflip = !!(rotation & DRM_REFLECT_Y); + DRM_MODE_ROTATE_0 | + DRM_MODE_REFLECT_X | + DRM_MODE_REFLECT_Y); + hflip = !!(rotation & DRM_MODE_REFLECT_X); + vflip = !!(rotation & DRM_MODE_REFLECT_Y); spin_lock_irqsave(&mdp5_plane->pipe_lock, flags); diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index a7663249b3ba..9303daa79aba 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1033,7 +1033,7 @@ nv50_wndw_reset(struct drm_plane *plane)...

Fix DRM_REFELCT_Y -> DRM_REFLECT_Y. Signed-off-by: Robert Foss <robert.foss at collabora.com> --- drivers/gpu/drm/drm_blend.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c index a0d0d6843288..dee67ef6c670 100644 --- a/drivers/gpu/drm/drm_blend.c +++ b/drivers/gpu/drm/drm_blend.c @@ -129,7 +129,7 @@ *

...!(rotation & DRM_REFLECT_X); - vflip = !!(rotation & DRM_REFLECT_Y); + DRM_MODE_ROTATE_0 | + DRM_MODE_REFLECT_X | + DRM_MODE_REFLECT_Y); + hflip = !!(rotation & DRM_MODE_REFLECT_X); + vflip = !!(rotation & DRM_MODE_REFLECT_Y); spin_lock_irqsave(&mdp5_plane->pipe_lock, flags); diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index a7663249b3ba..9303daa79aba 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -1033,7 +1033,7 @@ nv50_wndw_reset(struct drm_plane *plane)...

...vflip = !!(rotation & DRM_REFLECT_Y); > + DRM_MODE_ROTATE_0 | > + DRM_MODE_REFLECT_X | > + DRM_MODE_REFLECT_Y); > + hflip = !!(rotation & DRM_MODE_REFLECT_X); > + vflip = !!(rotation & DRM_MODE_REFLECT_Y); > > spin_lock_irqsave(&mdp5_plane->pipe_lock, flags); > > diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c > index a7663249b3ba..9303daa79aba 100644 > --- a/drivers/gpu/drm/nouveau/nv50_display.c > +++ b/drivers/gpu/drm/nouveau/nv50_display.c > @@ -1033,7 +1033,7 @@ nv50_wndw_res...

...vflip = !!(rotation & DRM_REFLECT_Y); > + DRM_MODE_ROTATE_0 | > + DRM_MODE_REFLECT_X | > + DRM_MODE_REFLECT_Y); > + hflip = !!(rotation & DRM_MODE_REFLECT_X); > + vflip = !!(rotation & DRM_MODE_REFLECT_Y); > > spin_lock_irqsave(&mdp5_plane->pipe_lock, flags); > > diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c > index a7663249b3ba..9303daa79aba 100644 > --- a/drivers/gpu/drm/nouveau/nv50_display.c > +++ b/drivers/gpu/drm/nouveau/nv50_display.c > @@ -1033,7 +1033,7 @@ nv50_wndw_res...

...vflip = !!(rotation & DRM_REFLECT_Y); > + DRM_MODE_ROTATE_0 | > + DRM_MODE_REFLECT_X | > + DRM_MODE_REFLECT_Y); > + hflip = !!(rotation & DRM_MODE_REFLECT_X); > + vflip = !!(rotation & DRM_MODE_REFLECT_Y); > > spin_lock_irqsave(&mdp5_plane->pipe_lock, flags); > > diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c > index a7663249b3ba..9303daa79aba 100644 > --- a/drivers/gpu/drm/nouveau/nv50_display.c > +++ b/drivers/gpu/drm/nouveau/nv50_display.c > @@ -1033,7 +1033,7 @@ nv50_wndw_res...