From: Hao-Qun Huang Date: Sat, 4 Jul 2026 06:58:15 +0000 (+0800) Subject: staging: vme_user: fix location monitor leak in fake bridge X-Git-Tag: v7.2-rc3~2^2~9 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e8422d89e8af41d87f0e9db564be8e2634f4c602;p=thirdparty%2Fkernel%2Flinux.git staging: vme_user: fix location monitor leak in fake bridge fake_init() allocates a location monitor resource and links it into fake_bridge->lm_resources. The init error path frees this list, but fake_exit() only frees the slave and master resource lists. Loading and unloading the module therefore triggers a kmemleak warning: unreferenced object 0xffff8b8b82aebe40 (size 64): comm "init", pid 1, jiffies 4294894572 backtrace (crc c1e013ef): kmemleak_alloc+0x4e/0x90 __kmalloc_cache_noprof+0x338/0x430 0xffffffffc0602246 do_one_initcall+0x4f/0x320 do_init_module+0x68/0x270 load_module+0x2a3b/0x2d90 Free the lm_resources list in fake_exit() as well, before fake_bridge is freed. Fixes: 658bcdae9c67 ("vme: Adding Fake VME driver") Cc: stable Cc: Martyn Welch Assisted-by: Claude:claude-fable-5 Signed-off-by: Hao-Qun Huang Link: https://patch.msgid.link/20260704065817.403111-1-alvinhuang0603@gmail.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/vme_user/vme_fake.c b/drivers/staging/vme_user/vme_fake.c index 8abaa3165fbb..434cf760ade6 100644 --- a/drivers/staging/vme_user/vme_fake.c +++ b/drivers/staging/vme_user/vme_fake.c @@ -1239,6 +1239,7 @@ static void __exit fake_exit(void) { struct list_head *pos = NULL; struct list_head *tmplist; + struct vme_lm_resource *lm; struct vme_master_resource *master_image; struct vme_slave_resource *slave_image; int i; @@ -1268,6 +1269,13 @@ static void __exit fake_exit(void) vme_unregister_bridge(fake_bridge); fake_crcsr_exit(fake_bridge); + /* resources are stored in link list */ + list_for_each_safe(pos, tmplist, &fake_bridge->lm_resources) { + lm = list_entry(pos, struct vme_lm_resource, list); + list_del(pos); + kfree(lm); + } + /* resources are stored in link list */ list_for_each_safe(pos, tmplist, &fake_bridge->slave_resources) { slave_image = list_entry(pos, struct vme_slave_resource, list);