maxinflight can overflow in spa_load_verify_cb()

When running on larger memory systems, we can overflow the value of maxinflight. This can result in maxinflight having a value of 0 causing the system to hang. Reviewed-by: Igor Kozhukhov <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: George Wilson <[email protected]> Closes openzfs#9272
tonyhutter · Dec 27, 2019 · 92c4bc0 · 92c4bc0
1 parent 74ec792
commit 92c4bc0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/module/zfs/spa.c b/module/zfs/spa.c
@@ -2137,7 +2137,8 @@ spa_load_verify_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
 	if (!BP_IS_METADATA(bp) && !spa_load_verify_data)
 		return (0);
 
-	int maxinflight_bytes = arc_target_bytes() >> spa_load_verify_shift;
+	uint64_t maxinflight_bytes =
+	    arc_target_bytes() >> spa_load_verify_shift;
 	zio_t *rio = arg;
 	size_t size = BP_GET_PSIZE(bp);