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 |
|---|---|---|
| 9p | ||
| adfs | ||
| affs | ||
| afs | ||
| autofs | ||
| befs | ||
| bfs | ||
| btrfs | ||
| cachefiles | ||
| ceph | ||
| cifs | ||
| coda | ||
| configfs | ||
| cramfs | ||
| crypto | ||
| debugfs | ||
| devpts | ||
| dlm | ||
| ecryptfs | ||
| efivarfs | ||
| efs | ||
| erofs | ||
| exfat | ||
| exportfs | ||
| ext2 | ||
| ext4 | ||
| f2fs | ||
| fat | ||
| freevxfs | ||
| fscache | ||
| fuse | ||
| gfs2 | ||
| hfs | ||
| hfsplus | ||
| hostfs | ||
| hpfs | ||
| hugetlbfs | ||
| iomap | ||
| isofs | ||
| jbd2 | ||
| jffs2 | ||
| jfs | ||
| kernfs | ||
| ksmbd | ||
| lockd | ||
| minix | ||
| netfs | ||
| nfs | ||
| nfs_common | ||
| nfsd | ||
| nilfs2 | ||
| nls | ||
| notify | ||
| ntfs | ||
| ntfs3 | ||
| ocfs2 | ||
| omfs | ||
| openpromfs | ||
| orangefs | ||
| overlayfs | ||
| proc | ||
| pstore | ||
| qnx4 | ||
| qnx6 | ||
| quota | ||
| ramfs | ||
| reiserfs | ||
| romfs | ||
| smbfs_common | ||
| squashfs | ||
| sysfs | ||
| sysv | ||
| tracefs | ||
| ubifs | ||
| udf | ||
| ufs | ||
| unicode | ||
| vboxsf | ||
| verity | ||
| xfs | ||
| zonefs | ||
| Kconfig | -rw-r--r-- | 9.6 KB |
| Kconfig.binfmt | -rw-r--r-- | 7.0 KB |
| Makefile | -rw-r--r-- | 4.5 KB |
| aio.c | -rw-r--r-- | 56.4 KB |
| anon_inodes.c | -rw-r--r-- | 6.8 KB |
| attr.c | -rw-r--r-- | 13.3 KB |
| bad_inode.c | -rw-r--r-- | 5.8 KB |
| binfmt_aout.c | -rw-r--r-- | 8.2 KB |
| binfmt_elf.c | -rw-r--r-- | 60.4 KB |
| binfmt_elf_fdpic.c | -rw-r--r-- | 43.6 KB |
| binfmt_flat.c | -rw-r--r-- | 28.5 KB |
| binfmt_misc.c | -rw-r--r-- | 17.4 KB |
| binfmt_script.c | -rw-r--r-- | 4.2 KB |
| buffer.c | -rw-r--r-- | 88.4 KB |
| char_dev.c | -rw-r--r-- | 16.5 KB |
| compat_binfmt_elf.c | -rw-r--r-- | 3.7 KB |
| coredump.c | -rw-r--r-- | 28.3 KB |
| d_path.c | -rw-r--r-- | 11.5 KB |
| dax.c | -rw-r--r-- | 46.1 KB |
| dcache.c | -rw-r--r-- | 85.4 KB |
| direct-io.c | -rw-r--r-- | 39.7 KB |
| drop_caches.c | -rw-r--r-- | 1.9 KB |
| eventfd.c | -rw-r--r-- | 12.0 KB |
| eventpoll.c | -rw-r--r-- | 63.9 KB |
| exec.c | -rw-r--r-- | 49.4 KB |
| fcntl.c | -rw-r--r-- | 23.8 KB |
| fhandle.c | -rw-r--r-- | 6.8 KB |
| file.c | -rw-r--r-- | 29.8 KB |
| file_table.c | -rw-r--r-- | 10.2 KB |
| filesystems.c | -rw-r--r-- | 6.5 KB |
| fs-writeback.c | -rw-r--r-- | 78.9 KB |
| fs_context.c | -rw-r--r-- | 17.7 KB |
| fs_parser.c | -rw-r--r-- | 10.1 KB |
| fs_pin.c | -rw-r--r-- | 1.9 KB |
| fs_struct.c | -rw-r--r-- | 3.4 KB |
| fs_types.c | -rw-r--r-- | 2.5 KB |
| fsopen.c | -rw-r--r-- | 11.0 KB |
| init.c | -rw-r--r-- | 6.1 KB |
| inode.c | -rw-r--r-- | 62.3 KB |
| internal.h | -rw-r--r-- | 5.6 KB |
| io-wq.c | -rw-r--r-- | 31.0 KB |
| io-wq.h | -rw-r--r-- | 3.7 KB |
| io_uring.c | -rw-r--r-- | 269.8 KB |
| ioctl.c | -rw-r--r-- | 24.0 KB |
| kernel_read_file.c | -rw-r--r-- | 4.3 KB |
| libfs.c | -rw-r--r-- | 39.3 KB |
| locks.c | -rw-r--r-- | 78.6 KB |
| mbcache.c | -rw-r--r-- | 12.0 KB |
| mount.h | -rw-r--r-- | 4.0 KB |
| mpage.c | -rw-r--r-- | 20.5 KB |
| namei.c | -rw-r--r-- | 132.6 KB |
| namespace.c | -rw-r--r-- | 110.2 KB |
| no-block.c | -rw-r--r-- | 478 bytes |
| nsfs.c | -rw-r--r-- | 6.6 KB |
| open.c | -rw-r--r-- | 34.2 KB |
| pipe.c | -rw-r--r-- | 34.6 KB |
| pnode.c | -rw-r--r-- | 15.1 KB |
| pnode.h | -rw-r--r-- | 2.0 KB |
| posix_acl.c | -rw-r--r-- | 23.6 KB |
| proc_namespace.c | -rw-r--r-- | 8.1 KB |
| read_write.c | -rw-r--r-- | 39.1 KB |
| readdir.c | -rw-r--r-- | 13.9 KB |
| remap_range.c | -rw-r--r-- | 13.8 KB |
| select.c | -rw-r--r-- | 34.7 KB |
| seq_file.c | -rw-r--r-- | 25.5 KB |
| signalfd.c | -rw-r--r-- | 9.0 KB |
| splice.c | -rw-r--r-- | 38.8 KB |
| stack.c | -rw-r--r-- | 2.5 KB |
| stat.c | -rw-r--r-- | 21.2 KB |
| statfs.c | -rw-r--r-- | 9.7 KB |
| super.c | -rw-r--r-- | 45.2 KB |
| sync.c | -rw-r--r-- | 10.5 KB |
| timerfd.c | -rw-r--r-- | 13.9 KB |
| userfaultfd.c | -rw-r--r-- | 54.4 KB |
| utimes.c | -rw-r--r-- | 7.6 KB |
| xattr.c | -rw-r--r-- | 27.4 KB |
Computing file changes ...
