ASoC: SOF: debug: Fix potential buffer overflow by snprintf()

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commit 1eb123ce98 upstream.

snprintf() returns the would-be-filled size when the string overflows
the given buffer size, hence using this value may result in the buffer
overflow (although it's unrealistic).

This patch replaces with a safer version, scnprintf() for papering
over such a potential issue.

Fixes: 5b10b62989 ("ASoC: SOF: Add `memory_info` file to debugfs")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20220801165420.25978-3-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Takashi Iwai 2022-08-01 18:54:19 +02:00 • committed by Greg Kroah-Hartman

parent 840311a09f

commit a67971a176

1 changed files with 3 additions and 3 deletions

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sound/soc/sof/debug.c

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