On Sun 2021-01-24 21:33:28, John Ogness wrote:
> Commit f0e386ee0c0b ("printk: fix buffer overflow potential for
> print_text()") added string termination in record_print_text().
> However it used the wrong base pointer for adding the terminator.
> This led to a 0-byte being written somewhere beyond the buffer.
>
> Use the correct base pointer when adding the terminator.
>
> Fixes: f0e386ee0c0b ("printk: fix buffer overflow potential for print_text()")
> Reported-by: Sven Schnelle <sv...@linux.ibm.com>
> Signed-off-by: John Ogness <john.ogn...@linutronix.de>
The patch is pushed in kernel/printk.git, branch printk-rework.
I am going to send pull request for-5.11 later today.
Thanks a lot for the debugging and quick fix. I feel shame that
I did not caught this during the review.
Best Regards,
Petr
