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Date:   Tue, 08 Dec 2020 14:33:10 -0800
From:   syzbot <>
Subject: memory leak in pcan_usb_pro_init


syzbot found the following issue on:

HEAD commit:    0477e928 Linux 5.10-rc7
git tree:       upstream
console output:
kernel config:
dashboard link:
compiler:       gcc (GCC) 10.1.0-syz 20200507
syz repro:
C reproducer:

IMPORTANT: if you fix the issue, please add the following tag to the commit:

BUG: memory leak
unreferenced object 0xffff888110d22380 (size 96):
  comm "kworker/0:3", pid 4912, jiffies 4294942219 (age 8.820s)
  hex dump (first 32 bytes):
    40 89 17 12 81 88 ff ff 00 00 00 00 00 00 00 00  @...............
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    [<00000000706edd19>] kmalloc include/linux/slab.h:552 [inline]
    [<00000000706edd19>] kzalloc include/linux/slab.h:664 [inline]
    [<00000000706edd19>] pcan_usb_pro_init+0x120/0x280 drivers/net/can/usb/peak_usb/pcan_usb_pro.c:856
    [<0000000025ad9e43>] peak_usb_create_dev drivers/net/can/usb/peak_usb/pcan_usb_core.c:850 [inline]
    [<0000000025ad9e43>] peak_usb_probe+0x389/0x490 drivers/net/can/usb/peak_usb/pcan_usb_core.c:948
    [<0000000064acbdae>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<0000000032f135d3>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000e1ce8490>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000bfd26436>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844
    [<00000000cc4dd83e>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000f1b1aa05>] __device_attach+0x122/0x250 drivers/base/dd.c:912
    [<0000000034abf9f3>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000ade05bb4>] device_add+0x5ac/0xc30 drivers/base/core.c:2936
    [<00000000a596bcb5>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159
    [<0000000008726818>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<00000000c9e87a33>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<0000000032f135d3>] really_probe+0x159/0x480 drivers/base/dd.c:554
    [<00000000e1ce8490>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738
    [<00000000bfd26436>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844

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