linux-stable/drivers/media
Andrey Konovalov e275faf367 media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get
This patch is a part of a series that extends kernel ABI to allow to pass
tagged user pointers (with the top byte set to something else other than
0x00) as syscall arguments.

videobuf_dma_contig_user_get() uses provided user pointers for vma
lookups, which can only by done with untagged pointers.

Untag the pointers in this function.

Link: http://lkml.kernel.org/r/100436d5f8e4349a78f27b0bbb27e4801fcb946b.1563904656.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-25 17:51:41 -07:00
..
cec media: cec-notifier: clear cec_adap in cec_notifier_unregister 2019-08-26 06:30:32 -03:00
common media: v4l2-tpg: add support for new pixelformats 2019-07-30 12:16:45 -04:00
dvb-core media: dvb-core: fix a memory leak bug 2019-08-21 18:39:54 -03:00
dvb-frontends media: don't do a 31 bit shift on a signed int 2019-08-26 14:11:10 -03:00
firewire media: firewire: Make structure fdtv_ca constant 2019-08-21 18:39:55 -03:00
i2c Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-09-24 16:48:02 -07:00
mc Linux 5.2-rc4 2019-06-11 12:09:28 -04:00
mmc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pci media: don't do a 31 bit shift on a signed int 2019-08-26 14:11:10 -03:00
platform chrome platform changes for v5.4 2019-09-19 14:14:28 -07:00
radio media: don't do a 31 bit shift on a signed int 2019-08-26 14:11:10 -03:00
rc media: mceusb: fix (eliminate) TX IR signal length limit 2019-08-21 18:39:54 -03:00
spi media: Clarify how menus are hidden by SUBDRV_AUTOSELECT 2019-08-19 12:00:29 -03:00
tuners media: Clarify how menus are hidden by SUBDRV_AUTOSELECT 2019-08-19 12:00:29 -03:00
usb media: pvrusb2: qctrl.flag will be uninitlaized if cx2341x_ctrl_query() returns error code 2019-08-29 10:22:39 -03:00
v4l2-core media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get 2019-09-25 17:51:41 -07:00
Kconfig media: Clarify how menus are hidden by SUBDRV_AUTOSELECT 2019-08-19 12:00:29 -03:00
Makefile media: move drivers/media/media-* to drivers/media/mc/mc-* 2019-05-28 12:15:46 -04:00