https://github.com/torvalds/linux
Revision 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a authored by Marek Vasut on 16 October 2021, 21:04:46 UTC, committed by Maarten Lankhorst on 21 October 2021, 09:08:08 UTC
The mxsfb->crtc.funcs may already be NULL when unloading the driver,
in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from
mxsfb_unload() leads to NULL pointer dereference.
Since all we care about is masking the IRQ and mxsfb->base is still
valid, just use that to clear and mask the IRQ.
Fixes: ae1ed00932819 ("drm: mxsfb: Stop using DRM simple display pipeline helper")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Daniel Abrecht <public@danielabrecht.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Stefan Agner <stefan@agner.ch>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211016210446.171616-1-marex@denx.de
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
1 parent 519d819
Tip revision: 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a authored by Marek Vasut on 16 October 2021, 21:04:46 UTC
drm: mxsfb: Fix NULL pointer dereference crash on unload
drm: mxsfb: Fix NULL pointer dereference crash on unload
Tip revision: 3cfc183
| File | Mode | Size |
|---|---|---|
| partitions | ||
| Kconfig | -rw-r--r-- | 6.6 KB |
| Kconfig.iosched | -rw-r--r-- | 1.3 KB |
| Makefile | -rw-r--r-- | 1.7 KB |
| badblocks.c | -rw-r--r-- | 14.1 KB |
| bdev.c | -rw-r--r-- | 26.9 KB |
| bfq-cgroup.c | -rw-r--r-- | 38.7 KB |
| bfq-iosched.c | -rw-r--r-- | 255.3 KB |
| bfq-iosched.h | -rw-r--r-- | 37.4 KB |
| bfq-wf2q.c | -rw-r--r-- | 52.7 KB |
| bio-integrity.c | -rw-r--r-- | 12.3 KB |
| bio.c | -rw-r--r-- | 47.3 KB |
| blk-cgroup-rwstat.c | -rw-r--r-- | 3.4 KB |
| blk-cgroup-rwstat.h | -rw-r--r-- | 3.9 KB |
| blk-cgroup.c | -rw-r--r-- | 49.8 KB |
| blk-core.c | -rw-r--r-- | 47.2 KB |
| blk-crypto-fallback.c | -rw-r--r-- | 18.5 KB |
| blk-crypto-internal.h | -rw-r--r-- | 5.4 KB |
| blk-crypto.c | -rw-r--r-- | 11.9 KB |
| blk-exec.c | -rw-r--r-- | 3.0 KB |
| blk-flush.c | -rw-r--r-- | 15.3 KB |
| blk-integrity.c | -rw-r--r-- | 11.9 KB |
| blk-ioc.c | -rw-r--r-- | 10.1 KB |
| blk-iocost.c | -rw-r--r-- | 96.4 KB |
| blk-iolatency.c | -rw-r--r-- | 28.0 KB |
| blk-ioprio.c | -rw-r--r-- | 6.4 KB |
| blk-ioprio.h | -rw-r--r-- | 332 bytes |
| blk-lib.c | -rw-r--r-- | 11.5 KB |
| blk-map.c | -rw-r--r-- | 14.1 KB |
| blk-merge.c | -rw-r--r-- | 30.2 KB |
| blk-mq-cpumap.c | -rw-r--r-- | 2.2 KB |
| blk-mq-debugfs-zoned.c | -rw-r--r-- | 435 bytes |
| blk-mq-debugfs.c | -rw-r--r-- | 24.9 KB |
| blk-mq-debugfs.h | -rw-r--r-- | 2.7 KB |
| blk-mq-pci.c | -rw-r--r-- | 1.3 KB |
| blk-mq-rdma.c | -rw-r--r-- | 1.3 KB |
| blk-mq-sched.c | -rw-r--r-- | 18.1 KB |
| blk-mq-sched.h | -rw-r--r-- | 2.5 KB |
| blk-mq-sysfs.c | -rw-r--r-- | 7.0 KB |
| blk-mq-tag.c | -rw-r--r-- | 17.7 KB |
| blk-mq-tag.h | -rw-r--r-- | 2.6 KB |
| blk-mq-virtio.c | -rw-r--r-- | 1.3 KB |
| blk-mq.c | -rw-r--r-- | 100.2 KB |
| blk-mq.h | -rw-r--r-- | 10.1 KB |
| blk-pm.c | -rw-r--r-- | 6.8 KB |
| blk-pm.h | -rw-r--r-- | 763 bytes |
| blk-rq-qos.c | -rw-r--r-- | 7.0 KB |
| blk-rq-qos.h | -rw-r--r-- | 5.3 KB |
| blk-settings.c | -rw-r--r-- | 28.4 KB |
| blk-stat.c | -rw-r--r-- | 4.8 KB |
| blk-stat.h | -rw-r--r-- | 4.6 KB |
| blk-sysfs.c | -rw-r--r-- | 24.5 KB |
| blk-throttle.c | -rw-r--r-- | 68.5 KB |
| blk-timeout.c | -rw-r--r-- | 4.1 KB |
| blk-wbt.c | -rw-r--r-- | 19.9 KB |
| blk-wbt.h | -rw-r--r-- | 2.8 KB |
| blk-zoned.c | -rw-r--r-- | 17.0 KB |
| blk.h | -rw-r--r-- | 11.9 KB |
| bounce.c | -rw-r--r-- | 6.7 KB |
| bsg-lib.c | -rw-r--r-- | 10.0 KB |
| bsg.c | -rw-r--r-- | 6.1 KB |
| disk-events.c | -rw-r--r-- | 12.9 KB |
| elevator.c | -rw-r--r-- | 19.0 KB |
| fops.c | -rw-r--r-- | 15.2 KB |
| genhd.c | -rw-r--r-- | 35.1 KB |
| holder.c | -rw-r--r-- | 4.2 KB |
| ioctl.c | -rw-r--r-- | 15.8 KB |
| ioprio.c | -rw-r--r-- | 5.1 KB |
| keyslot-manager.c | -rw-r--r-- | 16.3 KB |
| kyber-iosched.c | -rw-r--r-- | 27.9 KB |
| mq-deadline.c | -rw-r--r-- | 30.1 KB |
| opal_proto.h | -rw-r--r-- | 9.4 KB |
| sed-opal.c | -rw-r--r-- | 62.5 KB |
| t10-pi.c | -rw-r--r-- | 7.7 KB |
Computing file changes ...
