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dm-verity: fix unreliable memory allocation

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GFP_NOWAIT allocation may fail anytime. It needs to be changed to
GFP_NOIO. There's no need to handle an error because mempool_alloc with
GFP_NOIO can't fail.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Mikulas Patocka
2025-11-17 21:42:02 +01:00
parent a612d24e85
commit fe680d8c74
1 changed files with 1 additions and 5 deletions
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6
drivers/md/dm-verity-fec.c
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@@ -320,11 +320,7 @@ static int fec_alloc_bufs(struct dm_verity *v, struct dm_verity_fec_io *fio)
if (fio->bufs[n])
continue;
fio->bufs[n] = mempool_alloc(&v->fec->prealloc_pool, GFP_NOWAIT);
if (unlikely(!fio->bufs[n])) {
DMERR("failed to allocate FEC buffer");
return -ENOMEM;
}
fio->bufs[n] = mempool_alloc(&v->fec->prealloc_pool, GFP_NOIO);
}
/* try to allocate the maximum number of buffers */