WSL2-Linux-Kernel/drivers/pcmcia
Armin Wolf 97fd1c8e9c pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db()
[ Upstream commit c85fd9422f ]

When nonstatic_release_resource_db() frees all resources associated
with an PCMCIA socket, it forgets to free socket_data too, causing
a memory leak observable with kmemleak:

unreferenced object 0xc28d1000 (size 64):
  comm "systemd-udevd", pid 297, jiffies 4294898478 (age 194.484s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 f0 85 0e c3 00 00 00 00  ................
    00 00 00 00 0c 10 8d c2 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffda4245>] __kmem_cache_alloc_node+0x2d7/0x4a0
    [<7e51f0c8>] kmalloc_trace+0x31/0xa4
    [<d52b4ca0>] nonstatic_init+0x24/0x1a4 [pcmcia_rsrc]
    [<a2f13e08>] pcmcia_register_socket+0x200/0x35c [pcmcia_core]
    [<a728be1b>] yenta_probe+0x4d8/0xa70 [yenta_socket]
    [<c48fac39>] pci_device_probe+0x99/0x194
    [<84b7c690>] really_probe+0x181/0x45c
    [<8060fe6e>] __driver_probe_device+0x75/0x1f4
    [<b9b76f43>] driver_probe_device+0x28/0xac
    [<648b766f>] __driver_attach+0xeb/0x1e4
    [<6e9659eb>] bus_for_each_dev+0x61/0xb4
    [<25a669f3>] driver_attach+0x1e/0x28
    [<d8671d6b>] bus_add_driver+0x102/0x20c
    [<df0d323c>] driver_register+0x5b/0x120
    [<942cd8a4>] __pci_register_driver+0x44/0x4c
    [<e536027e>] __UNIQUE_ID___addressable_cleanup_module188+0x1c/0xfffff000 [iTCO_vendor_support]

Fix this by freeing socket_data too.

Tested on a Acer Travelmate 4002WLMi by manually binding/unbinding
the yenta_cardbus driver (yenta_socket).

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Message-ID: <20230512184529.5094-1-W_Armin@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-26 14:23:24 +02:00
..
Kconfig pcmcia: db1xxx_ss: restrict to MIPS_DB1XXX boards 2022-06-14 18:36:02 +02:00
Makefile
at91_cf.c
bcm63xx_pcmcia.c
bcm63xx_pcmcia.h
cardbus.c
cirrus.h
cistpl.c
cs.c pcmcia: fix setting of kthread task states 2022-01-27 11:04:02 +01:00
cs_internal.h
db1xxx_ss.c
ds.c
electra_cf.c
i82092.c
i82092aa.h
i82365.c
i82365.h
max1600.c
max1600.h
o2micro.h
omap_cf.c
pcmcia_cis.c
pcmcia_resource.c
pd6729.c
pd6729.h
pxa2xx_balloon3.c
pxa2xx_base.c
pxa2xx_base.h
pxa2xx_cm_x2xx.c
pxa2xx_cm_x255.c
pxa2xx_cm_x270.c
pxa2xx_colibri.c
pxa2xx_e740.c
pxa2xx_hx4700.c
pxa2xx_mainstone.c
pxa2xx_palmld.c
pxa2xx_palmtc.c
pxa2xx_palmtx.c
pxa2xx_sharpsl.c
pxa2xx_stargate2.c
pxa2xx_trizeps4.c
pxa2xx_viper.c
pxa2xx_vpac270.c
ricoh.h
rsrc_iodyn.c
rsrc_mgr.c
rsrc_nonstatic.c pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db() 2023-08-26 14:23:24 +02:00
sa11xx_base.c
sa11xx_base.h
sa1100_generic.c
sa1100_generic.h
sa1100_h3600.c
sa1100_simpad.c
sa1111_badge4.c
sa1111_generic.c
sa1111_generic.h
sa1111_jornada720.c
sa1111_lubbock.c
sa1111_neponset.c
soc_common.c
soc_common.h
socket_sysfs.c
tcic.c
tcic.h
ti113x.h
topic.h
vg468.h
vrc4171_card.c
xxs1500_ss.c
yenta_socket.c
yenta_socket.h