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| author | Cássio Gabriel <cassiogabrielcontato@gmail.com> | 2026-05-01 20:45:14 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-05-04 14:26:23 +0300 |
| commit | 359b626d362127451dbe8a687ac5c240f896ae2e (patch) | |
| tree | 9daf8f53dc3c9ad1c9c4e4d8e6ab87446856a1f2 /include/linux/debugobjects.h | |
| parent | ad39a189bfebb3de580f390bc000f9e121c6aca3 (diff) | |
| download | linux-359b626d362127451dbe8a687ac5c240f896ae2e.tar.xz | |
ALSA: pcmtest: Return -EFAULT on pattern read copy failure
pattern_write() reports -EFAULT when copy_from_user() fails, but
pattern_read() converts copy_to_user() failures into a zero-length read.
That makes a userspace buffer fault look like EOF instead of reporting the
actual error.
Return -EFAULT from pattern_read() when copying the pattern data to
userspace fails, and update the file offset only after a successful copy.
Fixes: 315a3d57c64c ("ALSA: Implement the new Virtual PCM Test Driver")
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260501-alsa-pcmtest-pattern-read-efault-v1-1-53e1e8c11dda@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/linux/debugobjects.h')
0 files changed, 0 insertions, 0 deletions