[coreboot-gerrit] Change in coreboot[master]: spi/flashconsole: Fix internal buffer overflow

[Nico Huber (Code Review)]

Hello build bot (Jenkins), Paul Menzel, Angel Pons, Michael Niewöhner,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/48074

to look at the new patch set (#2).

Change subject: spi/flashconsole: Fix internal buffer overflow
......................................................................

spi/flashconsole: Fix internal buffer overflow

Once the console's FMAP region is full, we stop clearing the line
buffer and `line_offset` is not reset anymore. Hence, sanity check
`line_offset` everytime before writing to the buffer.

The issue resulted in boot hangs and potentially a brick if the
log was very verbose.

Change-Id: I36e9037d7baf8c1ed8b2d0c120bfffa58c089c95
Signed-off-by: Nico Huber 
---
M src/drivers/spi/flashconsole.c
1 file changed, 2 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/74/48074/2