kernel-fxtec-pro1x/kernel/printk
Shreyas Joshi c6a9585611 printk: handle blank console arguments passed in.
[ Upstream commit 48021f98130880dd74286459a1ef48b5e9bc374f ]

If uboot passes a blank string to console_setup then it results in
a trashed memory. Ultimately, the kernel crashes during freeing up
the memory.

This fix checks if there is a blank parameter being
passed to console_setup from uboot. In case it detects that
the console parameter is blank then it doesn't setup the serial
device and it gracefully exits.

Link: https://lore.kernel.org/r/20200522065306.83-1-shreyas.joshi@biamp.com
Signed-off-by: Shreyas Joshi <shreyas.joshi@biamp.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
[pmladek@suse.com: Better format the commit message and code, remove unnecessary brackets.]
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:14:45 +02:00
..
braille.c
braille.h
console_cmdline.h
internal.h printk: queue wake_up_klogd irq_work only if per-CPU areas are ready 2020-07-22 09:32:13 +02:00
Makefile
printk.c printk: handle blank console arguments passed in. 2020-10-01 13:14:45 +02:00
printk_safe.c printk: queue wake_up_klogd irq_work only if per-CPU areas are ready 2020-07-22 09:32:13 +02:00