memory leak in nfcmrvl_nci_register

memory leak in nfcmrvl_nci_register_dev
Status: upstream: reported C repro on 2021/01/02 08:09
Reported-by: syzbot+19bcfc64a8df1318d1c3@syzkaller.appspotmail.com
First crash: 26d, last: 19d

Sample crash report:

BUG: memory leak
unreferenced object 0xffff88811090c400 (size 1024):
  comm "kworker/0:1", pid 7, jiffies 4294942933 (age 8.220s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 88 8d 0e 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000006a0c9ab>] kmalloc include/linux/slab.h:552 [inline]
    [<0000000006a0c9ab>] kzalloc include/linux/slab.h:682 [inline]
    [<0000000006a0c9ab>] nci_hci_allocate+0x21/0xd0 net/nfc/nci/hci.c:784
    [<0000000091c855d3>] nci_allocate_device net/nfc/nci/core.c:1170 [inline]
    [<0000000091c855d3>] nci_allocate_device+0x10b/0x160 net/nfc/nci/core.c:1132
    [<000000003bdee935>] nfcmrvl_nci_register_dev+0x10a/0x1c0 drivers/nfc/nfcmrvl/main.c:153
    [<00000000c1984908>] nfcmrvl_probe+0x223/0x290 drivers/nfc/nfcmrvl/usb.c:345
    [<000000005e346445>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<000000004ddddd5b>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<0000000017c87ef5>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745
    [<0000000059b88905>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851
    [<00000000d034f9e6>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000fbdaabdc>] __device_attach+0x122/0x250 drivers/base/dd.c:919
    [<000000002bdbd8b7>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<0000000015334a52>] device_add+0x5be/0xc30 drivers/base/core.c:3091
    [<0000000050836d51>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<00000000e80a789a>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<000000003aa42350>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<000000004ddddd5b>] really_probe+0x159/0x480 drivers/base/dd.c:561

Crashes (3):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-gce-leak	2021/01/05 22:24	upstream	36bbbd0e	a0234d98	.config	log	report	syz	C	alex.shi@linux.alibaba.com, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-gce-leak	2021/01/03 14:40	upstream	3516bd72	79264ae3	.config	log	report	syz	C	alex.shi@linux.alibaba.com, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org
ci-upstream-gce-leak	2020/12/29 08:05	upstream	dea8dcf2	8259d56c	.config	log	report	syz	C	alex.shi@linux.alibaba.com, davem@davemloft.net, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org