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scsi: ufs: ufshpb: Fix possible memory leak 

When HPB pinned region exists and mctx allocation for this region fails, a
memory leak is possible because memory is not released for the subregion
table of the current region.

Free memory for the subregion table of the current region.

Link: https://lore.kernel.org/r/1891546521.01629711601304.JavaMail.epsvc@epcpadp3
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Keoseong Park <keosung.park@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Keoseong Park 2021-08-23 18:07:14 +09:00 committed by Martin K. Petersen
parent 1259d5f0f5
commit 6c9783e629
1 changed files with 3 additions and 3 deletions
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6
drivers/scsi/ufs/ufshpb.c
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@ -1904,8 +1904,6 @@ static int ufshpb_alloc_region_tbl(struct ufs_hba *hba, struct ufshpb_lu *hpb)
if (!rgn_table)
return -ENOMEM;
hpb->rgn_tbl = rgn_table;
for (rgn_idx = 0; rgn_idx < hpb->rgns_per_lu; rgn_idx++) {
int srgn_cnt = hpb->srgns_per_rgn;
bool last_srgn = false;
@ -1942,10 +1940,12 @@ static int ufshpb_alloc_region_tbl(struct ufs_hba *hba, struct ufshpb_lu *hpb)
rgn->hpb = hpb;
}
hpb->rgn_tbl = rgn_table;
return 0;
release_srgn_table:
for (i = 0; i < rgn_idx; i++)
for (i = 0; i <= rgn_idx; i++)
kvfree(rgn_table[i].srgn_tbl);
kvfree(rgn_table);