Yangxi Xiang 39cdb68c64 vt: fix memory overlapping when deleting chars in the buffer ... A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew. Fixes: 81732c3b2f ("tty vt: Fix line garbage in virtual console on command line edition") Cc: stable <stable@kernel.org> Signed-off-by: Yangxi Xiang <xyangxi5@gmail.com> Link: https://lore.kernel.org/r/20220628093322.5688-1-xyangxi5@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-06-30 17:17:40 +02:00
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.gitignore	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
conmakehash.c	tty: vt: move conmakehash to drivers/tty/vt/ from scripts/	2019-12-17 14:42:46 +01:00
consolemap.c	vt/consolemap: do font sum unsigned	2021-01-07 16:17:31 +01:00
cp437.uni	tty: fix up a few remaining files without SPDX identifiers	2019-04-04 18:48:43 +02:00
defkeymap.c_shipped	vt: keyboard, defkeymap.c_shipped, approach the unicode table	2021-01-07 16:17:31 +01:00
defkeymap.map	tty: fix up a few remaining files without SPDX identifiers	2019-04-04 18:48:43 +02:00
keyboard.c	tty: Fix the keyboard led light display problem	2021-12-21 09:19:14 +01:00
Makefile	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
selection.c	tty: vt: selection: Correct misspelled function sel_loadlut()	2021-05-20 17:05:33 +02:00
vc_screen.c	Revert "vc_screen: extract vcs_read_buf_header"	2020-08-24 19:51:56 +02:00
vt.c	vt: fix memory overlapping when deleting chars in the buffer	2022-06-30 17:17:40 +02:00
vt_ioctl.c	vt_ioctl: fix potential spectre v1 in VT_DISALLOCATE	2022-03-18 14:35:01 +01:00