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1aeb122d21
linux/drivers/nfc
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Shang XiaoJing e840d8f4a1 nfc: virtual_ncidev: Fix memory leak in virtual_nci_send() 
skb should be free in virtual_nci_send(), otherwise kmemleak will report
memleak.

Steps for reproduction (simulated in qemu):
	cd tools/testing/selftests/nci
	make
	./nci_dev

BUG: memory leak
unreferenced object 0xffff888107588000 (size 208):
  comm "nci_dev", pid 206, jiffies 4294945376 (age 368.248s)
  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:
    [<000000008d94c8fd>] __alloc_skb+0x1da/0x290
    [<00000000278bc7f8>] nci_send_cmd+0xa3/0x350
    [<0000000081256a22>] nci_reset_req+0x6b/0xa0
    [<000000009e721112>] __nci_request+0x90/0x250
    [<000000005d556e59>] nci_dev_up+0x217/0x5b0
    [<00000000e618ce62>] nfc_dev_up+0x114/0x220
    [<00000000981e226b>] nfc_genl_dev_up+0x94/0xe0
    [<000000009bb03517>] genl_family_rcv_msg_doit.isra.14+0x228/0x2d0
    [<00000000b7f8c101>] genl_rcv_msg+0x35c/0x640
    [<00000000c94075ff>] netlink_rcv_skb+0x11e/0x350
    [<00000000440cfb1e>] genl_rcv+0x24/0x40
    [<0000000062593b40>] netlink_unicast+0x43f/0x640
    [<000000001d0b13cc>] netlink_sendmsg+0x73a/0xbf0
    [<000000003272487f>] __sys_sendto+0x324/0x370
    [<00000000ef9f1747>] __x64_sys_sendto+0xdd/0x1b0
    [<000000001e437841>] do_syscall_64+0x3f/0x90

Fixes: e624e6c3e7 ("nfc: Add a virtual nci device driver")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221020030505.15572-1-shangxiaojing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-20 21:13:04 -07:00
..
fdp i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
microread i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
nfcmrvl i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
nxp-nci i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
pn533 Merge tag 'v6.0-rc5' into i2c/for-mergewindow 2022-09-16 20:42:18 +01:00
pn544 i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
s3fwrn5 i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
st21nfca i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
st95hf spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
st-nci i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
Kconfig nfc: Add a virtual nci device driver 2021-01-29 18:03:33 -08:00
Makefile nfc: Add a virtual nci device driver 2021-01-29 18:03:33 -08:00
mei_phy.c nfc: mei_phy: constify buffer passed to mei_nfc_send() 2021-07-29 12:28:02 +01:00
mei_phy.h nfc: constify nfc_phy_ops 2021-07-25 09:21:21 +01:00
nfcsim.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-07-31 09:14:46 -07:00
port100.c NFC: port100: fix use-after-free in port100_send_complete 2022-03-09 19:59:34 -08:00
trf7970a.c spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
virtual_ncidev.c nfc: virtual_ncidev: Fix memory leak in virtual_nci_send() 2022-10-20 21:13:04 -07:00