linux-stable/drivers/nfc
Wei Yongjun 1b9dadba50 NFC: st21nfca: Fix memory leak in device probe and remove
'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>
2021-12-28 12:40:20 +00:00
..
fdp
microread
nfcmrvl
nxp-nci
pn533 nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails 2021-11-07 19:37:04 +00:00
pn544
s3fwrn5
st-nci
st21nfca NFC: st21nfca: Fix memory leak in device probe and remove 2021-12-28 12:40:20 +00:00
st95hf
Kconfig
Makefile
mei_phy.c
mei_phy.h
nfcsim.c
port100.c nfc: port100: lower verbosity of cancelled URB messages 2021-11-07 19:12:13 +00:00
trf7970a.c
virtual_ncidev.c nfc: virtual_ncidev: change default device permissions 2021-11-26 11:14:31 -08:00