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arc_hdr_authenticate: make explicit error 

On compression we could be more explicit here for cases
where we can not recompress the data.

Co-authored-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: George Melikov <mail@gmelikov.ru>
This commit is contained in:
George Melikov 2024-06-03 20:40:25 +03:00
parent 263bbe99f9
commit 5737823d0f
1 changed files with 6 additions and 2 deletions
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8
module/zfs/arc.c
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@ -1787,9 +1787,13 @@ arc_hdr_authenticate(arc_buf_hdr_t *hdr, spa_t *spa, uint64_t dsobj)
!HDR_COMPRESSION_ENABLED(hdr)) { !HDR_COMPRESSION_ENABLED(hdr)) {
abd = NULL; abd = NULL;
csize = zio_compress_data(HDR_GET_COMPRESS(hdr), csize = zio_compress_data(HDR_GET_COMPRESS(hdr),
hdr->b_l1hdr.b_pabd, &abd, lsize, lsize, hdr->b_complevel); hdr->b_l1hdr.b_pabd, &abd, lsize, MIN(lsize, psize),
hdr->b_complevel);
if (csize >= lsize || csize > psize) {
ret = SET_ERROR(EIO);
return (ret);
}
ASSERT3P(abd, !=, NULL); ASSERT3P(abd, !=, NULL);
ASSERT3U(csize, <=, psize);
abd_zero_off(abd, csize, psize - csize); abd_zero_off(abd, csize, psize - csize);
free_abd = B_TRUE; free_abd = B_TRUE;
} }