From 313b18c77466ef849439b0c80597da5b4e73f012 Mon Sep 17 00:00:00 2001 From: Tong Tiangen Date: Sun, 29 Jan 2023 04:06:51 +0000 Subject: [PATCH] memory tier: release the new_memtier in find_create_memory_tier() commit 93419139fa14124c1c507d804f2b28866ebee28d upstream. In find_create_memory_tier(), if failed to register device, then we should release new_memtier from the tier list and put device instead of memtier. Link: https://lkml.kernel.org/r/20230129040651.1329208-1-tongtiangen@huawei.com Fixes: 9832fb87834e ("mm/demotion: expose memory tier details via sysfs") Signed-off-by: Tong Tiangen Cc: Aneesh Kumar K.V Cc: Hanjun Guo Cc: Kefeng Wang Cc: Guohanjun Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- mm/memory-tiers.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c index fa8c9d07f9ce..ba863f46759d 100644 --- a/mm/memory-tiers.c +++ b/mm/memory-tiers.c @@ -211,8 +211,8 @@ static struct memory_tier *find_create_memory_tier(struct memory_dev_type *memty ret = device_register(&new_memtier->dev); if (ret) { - list_del(&memtier->list); - put_device(&memtier->dev); + list_del(&new_memtier->list); + put_device(&new_memtier->dev); return ERR_PTR(ret); } memtier = new_memtier;