kernel_optimize_test/drivers/nfc
Wei Yongjun e553265ea5 NFC: st21nfca: Fix memory leak in device probe and remove
[ Upstream commit 1b9dadba502234eea7244879b8d5d126bfaf9f0c ]

'phy->pending_skb' is alloced when device probe, but forgot to free
in the error handling path and remove path, this cause memory leak
as follows:

unreferenced object 0xffff88800bc06800 (size 512):
  comm "8", pid 11775, jiffies 4295159829 (age 9.032s)
  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:
    [<00000000d66c09ce>] __kmalloc_node_track_caller+0x1ed/0x450
    [<00000000c93382b3>] kmalloc_reserve+0x37/0xd0
    [<000000005fea522c>] __alloc_skb+0x124/0x380
    [<0000000019f29f9a>] st21nfca_hci_i2c_probe+0x170/0x8f2

Fix it by freeing 'pending_skb' in error and remove.

Fixes: 68957303f4 ("NFC: ST21NFCA: Add driver for STMicroelectronics ST21NFCA NFC Chip")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-05 12:40:31 +01:00
..
fdp
microread
nfcmrvl
nxp-nci
pn533
pn544
s3fwrn5
st-nci
st21nfca NFC: st21nfca: Fix memory leak in device probe and remove 2022-01-05 12:40:31 +01:00
st95hf
Kconfig
Makefile
mei_phy.c
mei_phy.h
nfcsim.c
port100.c
trf7970a.c