Dongliang Mu
b34cb7ac32
NFC: nci: fix memory leak in nci_allocate_device ...
commit e0652f8bb44d6294eeeac06d703185357f25d50b upstream.
nfcmrvl_disconnect fails to free the hci_dev field in struct nci_dev.
Fix this by freeing hci_dev in nci_free_device.
BUG: memory leak
unreferenced object 0xffff888111ea6800 (size 1024):
comm "kworker/1:0", pid 19, jiffies 4294942308 (age 13.580s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 60 fd 0c 81 88 ff ff .........`......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000004bc25d43>] kmalloc include/linux/slab.h:552 [inline]
[<000000004bc25d43>] kzalloc include/linux/slab.h:682 [inline]
[<000000004bc25d43>] nci_hci_allocate+0x21/0xd0 net/nfc/nci/hci.c:784
[<00000000c59cff92>] nci_allocate_device net/nfc/nci/core.c:1170 [inline]
[<00000000c59cff92>] nci_allocate_device+0x10b/0x160 net/nfc/nci/core.c:1132
[<00000000006e0a8e>] nfcmrvl_nci_register_dev+0x10a/0x1c0 drivers/nfc/nfcmrvl/main.c:153
[<000000004da1b57e>] nfcmrvl_probe+0x223/0x290 drivers/nfc/nfcmrvl/usb.c:345
[<00000000d506aed9>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
[<00000000bc632c92>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
[<00000000f5009125>] driver_probe_device+0x84/0x100 drivers/base/dd.c:740
[<000000000ce658ca>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:846
[<000000007067d05f>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
[<00000000f8e13372>] __device_attach+0x122/0x250 drivers/base/dd.c:914
[<000000009cf68860>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
[<00000000359c965a>] device_add+0x5be/0xc30 drivers/base/core.c:3109
[<00000000086e4bd3>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
[<00000000ca036872>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
[<00000000d40d36f6>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
[<00000000bc632c92>] really_probe+0x159/0x4a0 drivers/base/dd.c:554
Reported-by: syzbot+19bcfc64a8df1318d1c3@syzkaller.appspotmail.com
Fixes: 11f54f228643 ("NFC: nci: Add HCI over NCI protocol support")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-28 13:17:43 +02:00
2021-04-07 15:00:08 +02:00
2021-01-17 14:16:55 +01:00
2021-04-07 15:00:08 +02:00
2020-10-31 12:26:30 -07:00
2021-04-14 08:41:59 +02:00
2021-05-26 12:06:57 +02:00
2021-01-27 11:55:07 +01:00
2020-10-15 12:33:24 -07:00
2021-05-22 11:40:54 +02:00
2020-09-05 15:57:05 -07:00
2021-04-14 08:42:07 +02:00
2020-10-12 15:29:27 +02:00
2021-05-19 10:13:17 +02:00
2021-01-23 16:04:01 +01:00
2021-03-30 14:32:01 +02:00
2020-08-23 17:36:59 -05:00
2021-04-14 08:42:07 +02:00
2021-05-19 10:13:08 +02:00
2021-05-22 11:40:54 +02:00
2021-04-21 13:00:53 +02:00
2021-05-14 09:50:46 +02:00
2021-05-22 11:40:55 +02:00
2021-03-07 12:34:05 +01:00
2021-02-13 13:55:02 +01:00
2021-03-17 17:06:11 +01:00
2020-08-27 07:55:59 -07:00
2021-02-10 09:29:14 +01:00
2021-05-19 10:12:55 +02:00
2021-04-14 08:42:13 +02:00
2021-03-17 17:06:11 +01:00
2021-05-19 10:13:10 +02:00
2021-04-14 08:42:08 +02:00
2021-05-19 10:13:09 +02:00
2021-03-17 17:06:15 +01:00
2020-10-09 20:22:32 -07:00
2020-08-23 17:36:59 -05:00
2021-05-28 13:17:43 +02:00
2021-05-11 14:47:34 +02:00
2021-05-14 09:50:38 +02:00
2020-08-23 17:36:59 -05:00
2021-03-07 12:34:07 +01:00
2021-05-07 11:04:31 +02:00
2021-04-14 08:42:09 +02:00
2020-11-12 09:18:06 +01:00
2020-11-20 10:04:58 -08:00
2021-02-17 11:02:28 +01:00
2021-05-19 10:12:57 +02:00
2021-05-19 10:13:06 +02:00
2021-05-19 10:13:08 +02:00
2021-05-19 10:13:06 +02:00
2021-02-07 15:37:12 +01:00
2021-05-19 10:12:52 +02:00
2021-02-23 15:53:23 +01:00
2020-10-15 18:42:13 -07:00
2021-05-14 09:50:41 +02:00
2020-10-02 19:11:11 -07:00
2021-05-14 09:50:00 +02:00
2020-12-02 17:26:36 -08:00
2021-05-19 10:13:06 +02:00
2021-04-21 13:00:51 +02:00
2020-10-03 00:02:13 -04:00
2020-09-30 18:01:26 -07:00
2020-10-05 18:40:01 -07:00
b34cb7ac32