linux_dsm_epyc7002/drivers/tty/vt
Nicolas Pitre 57d38f26d8 vt: fix unicode console freeing with a common interface
By directly using kfree() in different places we risk missing one if
it is switched to using vfree(), especially if the corresponding
vmalloc() is hidden away within a common abstraction.

Oh wait, that's exactly what happened here.

So let's fix this by creating a common abstraction for the free case
as well.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Reported-by: syzbot+0bfda3ade1ee9288a1be@syzkaller.appspotmail.com
Fixes: 9a98e7a80f ("vt: don't use kmalloc() for the unicode screen buffer")
Cc: <stable@vger.kernel.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/nycvar.YSQ.7.76.2005021043110.2671@knanqh.ubzr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-04 11:49:59 +02:00
..
.gitignore tty: vt: move conmakehash to drivers/tty/vt/ from scripts/ 2019-12-17 14:42:46 +01:00
conmakehash.c tty: vt: move conmakehash to drivers/tty/vt/ from scripts/ 2019-12-17 14:42:46 +01:00
consolemap.c tty/vt: avoid high order pages allocation on GIO_UNIMAP ioctl 2019-04-16 15:21:34 +02:00
cp437.uni tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
defkeymap.c_shipped tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
defkeymap.map tty: fix up a few remaining files without SPDX identifiers 2019-04-04 18:48:43 +02:00
keyboard.c tty: vt: keyboard: reject invalid keycodes 2019-11-23 18:31:07 +01:00
Makefile kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
selection.c vt: selection, use rounddown() for start/endline computation 2020-03-16 08:41:17 +01:00
vc_screen.c vcs: prevent write access to vcsu devices 2019-11-27 07:47:17 +01:00
vt_ioctl.c vt: vt_ioctl: fix use-after-free in vt_in_use() 2020-03-27 12:35:04 +01:00
vt.c vt: fix unicode console freeing with a common interface 2020-05-04 11:49:59 +02:00