The patch titled
Subject: mm/zswap: fix potential memory leak
has been added to the -mm tree. Its filename is
mm-zswap-add-the-flag-can_sleep_mapped-fix-2.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-zswap-add-the-flag-can_sleep_mapped-fix-2.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-zswap-add-the-flag-can_sleep_mapped-fix-2.patch
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------------------------------------------------------
From: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Subject: mm/zswap: fix potential memory leak
If entry is NULL, the requested memory tmp should be freed, otherwise it
may cause a memory leak.
Link: https://lkml.kernel.org/r/1611538365-51811-1-git-send-email-tiantao6@xxxxxxxxxxxxx
Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Vitaly Wool <vitaly.wool@xxxxxxxxxxxx>
Cc: Dan Streetman <ddstreet@xxxxxxxx>
Cc: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
Cc: Seth Jennings <sjenning@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zswap.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/zswap.c~mm-zswap-add-the-flag-can_sleep_mapped-fix-2
+++ a/mm/zswap.c
@@ -962,6 +962,7 @@ static int zswap_writeback_entry(struct
/* entry was invalidated */
spin_unlock(&tree->lock);
zpool_unmap_handle(pool, handle);
+ kfree(tmp);
return 0;
}
spin_unlock(&tree->lock);
_
Patches currently in -mm which might be from tiantao6@xxxxxxxxxxxxx are
mm-zswap-add-the-flag-can_sleep_mapped.patch
mm-zswap-add-the-flag-can_sleep_mapped-fix-2.patch
mm-zswap-fix-variable-entry-is-uninitialized-when-used.patch
mm-set-the-sleep_mapped-to-true-for-zbud-and-z3fold.patch
