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 |
|---|---|---|
| Kconfig | -rw-r--r-- | 5.1 KB |
| Makefile | -rw-r--r-- | 986 bytes |
| alarmtimer.c | -rw-r--r-- | 23.7 KB |
| clockevents.c | -rw-r--r-- | 19.5 KB |
| clocksource-wdtest.c | -rw-r--r-- | 5.8 KB |
| clocksource.c | -rw-r--r-- | 40.1 KB |
| hrtimer.c | -rw-r--r-- | 66.1 KB |
| itimer.c | -rw-r--r-- | 10.2 KB |
| jiffies.c | -rw-r--r-- | 2.6 KB |
| namespace.c | -rw-r--r-- | 10.4 KB |
| ntp.c | -rw-r--r-- | 28.3 KB |
| ntp_internal.h | -rw-r--r-- | 783 bytes |
| posix-clock.c | -rw-r--r-- | 5.6 KB |
| posix-cpu-timers.c | -rw-r--r-- | 44.0 KB |
| posix-stubs.c | -rw-r--r-- | 5.5 KB |
| posix-timers.c | -rw-r--r-- | 37.2 KB |
| posix-timers.h | -rw-r--r-- | 1.9 KB |
| sched_clock.c | -rw-r--r-- | 7.7 KB |
| test_udelay.c | -rw-r--r-- | 3.6 KB |
| tick-broadcast-hrtimer.c | -rw-r--r-- | 3.2 KB |
| tick-broadcast.c | -rw-r--r-- | 30.3 KB |
| tick-common.c | -rw-r--r-- | 14.7 KB |
| tick-internal.h | -rw-r--r-- | 7.9 KB |
| tick-legacy.c | -rw-r--r-- | 999 bytes |
| tick-oneshot.c | -rw-r--r-- | 3.2 KB |
| tick-sched.c | -rw-r--r-- | 38.0 KB |
| tick-sched.h | -rw-r--r-- | 3.3 KB |
| time.c | -rw-r--r-- | 22.9 KB |
| time_test.c | -rw-r--r-- | 2.0 KB |
| timeconst.bc | -rw-r--r-- | 3.0 KB |
| timeconv.c | -rw-r--r-- | 4.5 KB |
| timecounter.c | -rw-r--r-- | 2.5 KB |
| timekeeping.c | -rw-r--r-- | 69.8 KB |
| timekeeping.h | -rw-r--r-- | 983 bytes |
| timekeeping_debug.c | -rw-r--r-- | 1.3 KB |
| timekeeping_internal.h | -rw-r--r-- | 921 bytes |
| timer.c | -rw-r--r-- | 60.1 KB |
| timer_list.c | -rw-r--r-- | 8.6 KB |
| vsyscall.c | -rw-r--r-- | 4.9 KB |
Computing file changes ...
