diff options
| author | Hui Wang <hui.wang@canonical.com> | 2022-03-28 15:35:35 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-04-05 12:23:16 +0300 |
| commit | 9f342904216f378e88008bb0ce1ae200a4b99fe8 (patch) | |
| tree | a30d44d033abf9a0c3362533747de295ef6dd435 /sound/soc/codecs/cs35l41-lib.c | |
| parent | 0f91bc71fe1f24b29e8980504a23681324713a0f (diff) | |
| download | linux-9f342904216f378e88008bb0ce1ae200a4b99fe8.tar.xz | |
ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t
The CS35L41_NUM_OTP_ELEM is 100, but only 99 entries are defined in
the array otp_map_1/2[CS35L41_NUM_OTP_ELEM], this will trigger UBSAN
to report a shift-out-of-bounds warning in the cs35l41_otp_unpack()
since the last entry in the array will result in GENMASK(-1, 0).
UBSAN reports this problem:
UBSAN: shift-out-of-bounds in /home/hwang4/build/jammy/jammy/sound/soc/codecs/cs35l41-lib.c:836:8
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 10 PID: 595 Comm: systemd-udevd Not tainted 5.15.0-23-generic #23
Hardware name: LENOVO \x02MFG_IN_GO/\x02MFG_IN_GO, BIOS N3GET19W (1.00 ) 03/11/2022
Call Trace:
<TASK>
show_stack+0x52/0x58
dump_stack_lvl+0x4a/0x5f
dump_stack+0x10/0x12
ubsan_epilogue+0x9/0x45
__ubsan_handle_shift_out_of_bounds.cold+0x61/0xef
? regmap_unlock_mutex+0xe/0x10
cs35l41_otp_unpack.cold+0x1c6/0x2b2 [snd_soc_cs35l41_lib]
cs35l41_hda_probe+0x24f/0x33a [snd_hda_scodec_cs35l41]
cs35l41_hda_i2c_probe+0x65/0x90 [snd_hda_scodec_cs35l41_i2c]
? cs35l41_hda_i2c_remove+0x20/0x20 [snd_hda_scodec_cs35l41_i2c]
i2c_device_probe+0x252/0x2b0
Fixes: 6450ef559056 ("ASoC: cs35l41: CS35L41 Boosted Smart Amplifier")
Reviewed-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://lore.kernel.org/r/20220328123535.50000-2-hui.wang@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/cs35l41-lib.c')
| -rw-r--r-- | sound/soc/codecs/cs35l41-lib.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c index 810643be13a4..9aa2b8948c61 100644 --- a/sound/soc/codecs/cs35l41-lib.c +++ b/sound/soc/codecs/cs35l41-lib.c @@ -422,7 +422,7 @@ static bool cs35l41_volatile_reg(struct device *dev, unsigned int reg) } } -static const struct cs35l41_otp_packed_element_t otp_map_1[CS35L41_NUM_OTP_ELEM] = { +static const struct cs35l41_otp_packed_element_t otp_map_1[] = { /* addr shift size */ { 0x00002030, 0, 4 }, /*TRIM_OSC_FREQ_TRIM*/ { 0x00002030, 7, 1 }, /*TRIM_OSC_TRIM_DONE*/ @@ -525,7 +525,7 @@ static const struct cs35l41_otp_packed_element_t otp_map_1[CS35L41_NUM_OTP_ELEM] { 0x00017044, 0, 24 }, /*LOT_NUMBER*/ }; -static const struct cs35l41_otp_packed_element_t otp_map_2[CS35L41_NUM_OTP_ELEM] = { +static const struct cs35l41_otp_packed_element_t otp_map_2[] = { /* addr shift size */ { 0x00002030, 0, 4 }, /*TRIM_OSC_FREQ_TRIM*/ { 0x00002030, 7, 1 }, /*TRIM_OSC_TRIM_DONE*/ @@ -671,35 +671,35 @@ static const struct cs35l41_otp_map_element_t cs35l41_otp_map_map[] = { { .id = 0x01, .map = otp_map_1, - .num_elements = CS35L41_NUM_OTP_ELEM, + .num_elements = ARRAY_SIZE(otp_map_1), .bit_offset = 16, .word_offset = 2, }, { .id = 0x02, .map = otp_map_2, - .num_elements = CS35L41_NUM_OTP_ELEM, + .num_elements = ARRAY_SIZE(otp_map_2), .bit_offset = 16, .word_offset = 2, }, { .id = 0x03, .map = otp_map_2, - .num_elements = CS35L41_NUM_OTP_ELEM, + .num_elements = ARRAY_SIZE(otp_map_2), .bit_offset = 16, .word_offset = 2, }, { .id = 0x06, .map = otp_map_2, - .num_elements = CS35L41_NUM_OTP_ELEM, + .num_elements = ARRAY_SIZE(otp_map_2), .bit_offset = 16, .word_offset = 2, }, { .id = 0x08, .map = otp_map_1, - .num_elements = CS35L41_NUM_OTP_ELEM, + .num_elements = ARRAY_SIZE(otp_map_1), .bit_offset = 16, .word_offset = 2, }, |