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sound(4): Fix memory map of /dev/dsp devices when buffer size is not a multiple of PAGE_SIZE.

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By using sndbuf_getallocsize() instead of sndbuf_getsize() in dsp_mmap_single().

PR:		267555
MFC after:	1 week
Sponsored by:	NVIDIA Networking
This commit is contained in:
Florian Walpen 2022-11-04 19:04:26 +01:00 committed by Hans Petter Selasky
parent eb4d86d529
commit ad370f7658
1 changed files with 1 additions and 1 deletions
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2
sys/dev/sound/pcm/dsp.c
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@ -2291,7 +2291,7 @@ dsp_mmap_single(struct cdev *i_dev, vm_ooffset_t *offset,
c = ((nprot & PROT_WRITE) != 0) ? wrch : rdch;
if (c == NULL || (c->flags & CHN_F_MMAP_INVALID) ||
(*offset + size) > sndbuf_getsize(c->bufsoft) ||
(*offset + size) > sndbuf_getallocsize(c->bufsoft) ||
(wrch != NULL && (wrch->flags & CHN_F_MMAP_INVALID)) ||
(rdch != NULL && (rdch->flags & CHN_F_MMAP_INVALID))) {
relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR);