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| author | Baisong Zhong <zhongbaisong@huawei.com> | 2022-11-21 14:00:44 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-11-23 09:56:47 +0300 |
| commit | b5172e62458f8e6ff359e5f096044a488db90ac5 (patch) | |
| tree | 0d886968b20fcf05353cea7e09031b4f36ecc739 /include/sound/dmaengine_pcm.h | |
| parent | 1cf47b044acdf248155bf40ba99be92baa22c47d (diff) | |
| download | linux-b5172e62458f8e6ff359e5f096044a488db90ac5.tar.xz | |
ALSA: pcm: fix undefined behavior in bit shift for SNDRV_PCM_RATE_KNOT
Shifting signed 32-bit value by 31 bits is undefined, so changing
significant bit to unsigned. The UBSAN warning calltrace like below:
UBSAN: shift-out-of-bounds in sound/core/pcm_native.c:2676:21
left shift of 1 by 31 places cannot be represented in type 'int'
...
Call Trace:
<TASK>
dump_stack_lvl+0x8d/0xcf
ubsan_epilogue+0xa/0x44
__ubsan_handle_shift_out_of_bounds+0x1e7/0x208
snd_pcm_open_substream+0x9f0/0xa90
snd_pcm_oss_open.part.26+0x313/0x670
snd_pcm_oss_open+0x30/0x40
soundcore_open+0x18b/0x2e0
chrdev_open+0xe2/0x270
do_dentry_open+0x2f7/0x620
path_openat+0xd66/0xe70
do_filp_open+0xe3/0x170
do_sys_openat2+0x357/0x4a0
do_sys_open+0x87/0xd0
do_syscall_64+0x34/0x80
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Baisong Zhong <zhongbaisong@huawei.com>
Link: https://lore.kernel.org/r/20221121110044.3115686-1-zhongbaisong@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/dmaengine_pcm.h')
0 files changed, 0 insertions, 0 deletions