linux-stable/drivers/nfc/st21nfca
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
..
core.c nfc: st21nfca: remove unused header includes 2021-08-26 09:13:36 +01:00
dep.c NFC: st21nfca: remove unnecessary variable and labels 2021-05-20 15:44:27 -07:00
i2c.c NFC: st21nfca: Fix memory leak in device probe and remove 2021-12-28 12:40:20 +00:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile
se.c nfc: st21nfca: drop unneeded debug prints 2021-10-11 17:00:51 -07:00
st21nfca.h nfc: constify nfc_phy_ops 2021-07-25 09:21:21 +01:00
vendor_cmds.c nfc: constify pointer to nfc_vendor_cmd 2021-07-25 09:21:21 +01:00