linux_dsm_epyc7002/drivers/tty
Nicolas Pitre 9a98e7a80f vt: don't use kmalloc() for the unicode screen buffer
Even if the actual screen size is bounded in vc_do_resize(), the unicode
buffer is still a little more than twice the size of the glyph buffer
and may exceed MAX_ORDER down the kmalloc() path. This can be triggered
from user space.

Since there is no point having a physically contiguous buffer here,
let's avoid the above issue as well as reducing pressure on high order
allocations by using vmalloc() instead.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Cc: <stable@vger.kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/nycvar.YSQ.7.76.2003282214210.2671@knanqh.ubzr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-23 15:46:30 +02:00
..
hvc Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
ipwireless
serdev serdev: Fix detection of UART devices on Apple machines. 2020-03-06 14:10:44 +01:00
serial serial: sh-sci: Make sure status register SCxSR is read in correct sequence 2020-04-16 16:16:52 +02:00
vt vt: don't use kmalloc() for the unicode screen buffer 2020-04-23 15:46:30 +02:00
amiserial.c
cyclades.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
ehv_bytechan.c tty: evh_bytechan: Fix out of bounds accesses 2020-03-17 23:40:31 +11:00
goldfish.c
isicom.c
Kconfig tty: reorganize tty & serial menus 2020-03-12 17:17:30 +01:00
Makefile
mips_ejtag_fdc.c tty: mips_ejtag_fdc: Mark expected switch fall-through 2020-03-07 09:52:02 +01:00
moxa.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
moxa.h
mxser.c
mxser.h
n_gsm.c n_gsm: switch escape to bool 2020-02-19 12:46:48 +01:00
n_hdlc.c tty: n_hdlc, remove FILE and LINE from pr_debug 2020-03-16 08:39:47 +01:00
n_null.c
n_r3964.c
n_tracerouter.c
n_tracesink.c
n_tracesink.h tty: n_tracesink: Use the correct style for SPDX License Identifier 2020-03-18 13:01:31 +01:00
n_tty.c n_tty: Distribute switch variables for initialization 2020-02-23 20:14:50 +01:00
nozomi.c tty: nozomi: Use scnprintf() for avoiding potential buffer overflow 2020-03-18 12:59:29 +01:00
pty.c
rocket_int.h
rocket.c
rocket.h
synclink_gt.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
synclink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-01-28 16:02:33 -08:00
synclinkmp.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
sysrq.c tty/sysrq: Export sysrq_mask(), sysrq_toggle_support() 2020-04-20 19:37:42 +02:00
tty_audit.c
tty_baudrate.c tty: baudrate: SPARC supports few more baud rates 2020-01-22 10:23:26 +01:00
tty_buffer.c
tty_io.c tty: fix compat TIOCGSERIAL checking wrong function ptr 2020-03-18 13:15:13 +01:00
tty_ioctl.c
tty_jobctrl.c
tty_ldisc.c
tty_ldsem.c
tty_mutex.c
tty_port.c serdev: ttyport: restore client ops on deregistration 2020-02-10 12:26:44 -08:00
ttynull.c
vcc.c