[Intel-gfx] v5.11-rc5 BUG kmalloc-1k (Not tainted): Redzone overwritten
Chris Wilson
chris at chris-wilson.co.uk
Mon Feb 1 08:36:12 UTC 2021
Quoting Jani Nikula (2021-01-28 13:23:48)
>
> A number of our CI systems are hitting redzone overwritten errors after
> s2idle, with the errors introduced between v5.11-rc4 and v5.11-rc5. See
> snippet below, full logs for one affected machine at [1].
>
> Known issue?
Fwiw, I think this should be fixed by
commit 08d60e5999540110576e7c1346d486220751b7f9
Author: John Ogness <john.ogness at linutronix.de>
Date: Sun Jan 24 21:33:28 2021 +0106
printk: fix string termination for record_print_text()
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 <svens at linux.ibm.com>
Signed-off-by: John Ogness <john.ogness at linutronix.de>
Signed-off-by: Petr Mladek <pmladek at suse.com>
Link: https://lore.kernel.org/r/20210124202728.4718-1-john.ogness@linutronix.de
din should be rolled forward, but there's yet another regression in rc6
breaking suspend on all machines.
-Chris
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