[merged mm-stable] zram-validate-deflate-params.patch removed from -mm tree

The quilt patch titled
     Subject: zram: validate deflate params
has been removed from the -mm tree.  Its filename was
     zram-validate-deflate-params.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Sergey Senozhatsky <[email protected]>
Subject: zram: validate deflate params
Date: Wed, 29 Jul 2026 13:57:36 +0900

We must validate user-supplied deflate winbits before we pass it to
zlib_deflate_workspacesize(), which triggers BUG_ON() if winbits value is
outside of valid ranges.

Link: https://lore.kernel.org/[email protected]
Fixes: dc75a0d93bd5 ("zram: support deflate-specific params")
Link: https://sashiko.dev/#/patchset/[email protected]
Signed-off-by: Sergey Senozhatsky <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Haoqin Huang <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 drivers/block/zram/backend_deflate.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/block/zram/backend_deflate.c~zram-validate-deflate-params
+++ a/drivers/block/zram/backend_deflate.c
@@ -24,8 +24,16 @@ static int deflate_setup_params(struct z
 {
 	if (params->level == ZCOMP_PARAM_NOT_SET)
 		params->level = Z_DEFAULT_COMPRESSION;
-	if (params->deflate.winbits == ZCOMP_PARAM_NOT_SET)
+	if (params->deflate.winbits == ZCOMP_PARAM_NOT_SET) {
 		params->deflate.winbits = DEFLATE_DEF_WINBITS;
+	} else {
+		s32 wb = params->deflate.winbits;
+
+		if ((wb < -15 || wb > -9) && (wb < 9 || wb > 15)) {
+			pr_err("invalid deflate winbits: %d\n", wb);
+			return -EINVAL;
+		}
+	}
 
 	return 0;
 }
_

Patches currently in -mm which might be from [email protected] are