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Revert "block: initialize integrity buffer to zero before writing it to media"

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This reverts commit 9e8e62c4a8.
This commit is contained in:
Ksawlii 2024-11-24 00:23:47 +01:00
parent 8f420f8031
commit 5ac9b91c6d
1 changed files with 1 additions and 10 deletions
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11
block/bio-integrity.c
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@ -216,7 +216,6 @@ bool bio_integrity_prep(struct bio *bio)
unsigned int bytes, offset, i; unsigned int bytes, offset, i;
unsigned int intervals; unsigned int intervals;
blk_status_t status; blk_status_t status;
gfp_t gfp = GFP_NOIO;
if (!bi) if (!bi)
return true; return true;
@ -239,20 +238,12 @@ bool bio_integrity_prep(struct bio *bio)
if (!bi->profile->generate_fn || if (!bi->profile->generate_fn ||
!(bi->flags & BLK_INTEGRITY_GENERATE)) !(bi->flags & BLK_INTEGRITY_GENERATE))
return true; return true;
/*
* Zero the memory allocated to not leak uninitialized kernel
* memory to disk. For PI this only affects the app tag, but
* for non-integrity metadata it affects the entire metadata
* buffer.
*/
gfp |= __GFP_ZERO;
} }
intervals = bio_integrity_intervals(bi, bio_sectors(bio)); intervals = bio_integrity_intervals(bi, bio_sectors(bio));
/* Allocate kernel buffer for protection data */ /* Allocate kernel buffer for protection data */
len = intervals * bi->tuple_size; len = intervals * bi->tuple_size;
buf = kmalloc(len, gfp | q->bounce_gfp); buf = kmalloc(len, GFP_NOIO | q->bounce_gfp);
status = BLK_STS_RESOURCE; status = BLK_STS_RESOURCE;
if (unlikely(buf == NULL)) { if (unlikely(buf == NULL)) {
printk(KERN_ERR "could not allocate integrity buffer\n"); printk(KERN_ERR "could not allocate integrity buffer\n");