Li Zetao 4fe3c88552 atm: idt77252: fix kmemleak when rmmod idt77252 ... There are memory leaks reported by kmemleak: unreferenced object 0xffff888106500800 (size 128): comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380 [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0 [<000000000e947e2a>] idt77252_init_one+0x2847/0x3c90 [idt77252] [<000000006efb048e>] local_pci_probe+0xeb/0x1a0 ... unreferenced object 0xffff888106500b00 (size 128): comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s) hex dump (first 32 bytes): 00 20 3d 01 80 88 ff ff 00 20 3d 01 80 88 ff ff . =...... =..... f0 23 3d 01 80 88 ff ff 00 20 3d 01 00 00 00 00 .#=...... =..... backtrace: [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380 [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0 [<00000000f451c5be>] alloc_scq.constprop.0+0x4a/0x400 [idt77252] [<00000000e6313849>] idt77252_init_one+0x28cf/0x3c90 [idt77252] The root cause is traced to the vc_maps which alloced in open_card_oam() are not freed in close_card_oam(). The vc_maps are used to record open connections, so when close a vc_map in close_card_oam(), the memory should be freed. Moreover, the ubr0 is not closed when close a idt77252 device, leading to the memory leak of vc_map and scq_info. Fix them by adding kfree in close_card_oam() and implementing new close_card_ubr0() to close ubr0. Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Signed-off-by: Li Zetao <lizetao1@huawei.com> Reviewed-by: Francois Romieu <romieu@fr.zoreil.com> Link: https://lore.kernel.org/r/20230320143318.2644630-1-lizetao1@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-03-21 20:19:28 -07:00
..
.gitignore
adummy.c
atmtcp.c
eni.c
eni.h
fore200e.c
fore200e.h
he.c
he.h
idt77105.c
idt77105.h
idt77252_tables.h
idt77252.c	atm: idt77252: fix kmemleak when rmmod idt77252	2023-03-21 20:19:28 -07:00
idt77252.h
iphase.c
iphase.h
Kconfig
lanai.c
Makefile
midway.h
nicstar.c
nicstar.h
nicstarmac.c
nicstarmac.copyright
solos-attrlist.c
solos-pci.c
suni.c
suni.h
tonga.h
zeprom.h