memory leak in zr364xx

memory leak in zr364xx_probe
Status: upstream: reported C repro on 2020/12/23 15:25
Reported-by: syzbot+b4d54814b339b5c6bbd4@syzkaller.appspotmail.com
First crash: 36d, last: 16d

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2020/12/31 20:47	7m	ezequiel@vanguardiasur.com.ar		https://gitlab.collabora.com/linux/0day.git a1714d224e516b579d09cc1b4c3d85042e42f14c	report log
2020/12/31 01:40	7m	ezequiel@vanguardiasur.com.ar		https://gitlab.collabora.com/linux/0day.git a1714d224e516b579d09cc1b4c3d85042e42f14c	report log

Sample crash report:

BUG: memory leak
unreferenced object 0xffffc90000e75000 (size 200704):
  comm "kworker/0:0", pid 5, jiffies 4294942470 (age 8.180s)
  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:
    [<00000000b9f6f89e>] __vmalloc_node_range+0x3a5/0x410 mm/vmalloc.c:2585
    [<000000007146677f>] __vmalloc_node mm/vmalloc.c:2617 [inline]
    [<000000007146677f>] vmalloc+0x49/0x50 mm/vmalloc.c:2650
    [<00000000d203845d>] zr364xx_board_init drivers/media/usb/zr364xx/zr364xx.c:1348 [inline]
    [<00000000d203845d>] zr364xx_probe+0x60b/0x833 drivers/media/usb/zr364xx/zr364xx.c:1509
    [<0000000027d8ae8f>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<0000000040436426>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<00000000b049c4a6>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745
    [<0000000052797cfc>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851
    [<00000000b8c4f14b>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000575d27a3>] __device_attach+0x122/0x250 drivers/base/dd.c:919
    [<000000001706509a>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000e4d73bd0>] device_add+0x5be/0xc30 drivers/base/core.c:3091
    [<00000000b3b39ea6>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<00000000c7ff828c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<00000000e7365d12>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<0000000040436426>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<00000000b049c4a6>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745

BUG: memory leak
unreferenced object 0xffff88810d3eda80 (size 192):
  comm "kworker/0:0", pid 5, jiffies 4294942470 (age 8.180s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 98 da 3e 0d 81 88 ff ff  ..........>.....
  backtrace:
    [<0000000081feb8a2>] kmalloc include/linux/slab.h:557 [inline]
    [<0000000081feb8a2>] usb_alloc_urb+0x66/0xe0 drivers/usb/core/urb.c:74
    [<0000000056e49d08>] zr364xx_start_readpipe+0x78/0x130 drivers/media/usb/zr364xx/zr364xx.c:1022
    [<00000000959ff4c6>] zr364xx_board_init drivers/media/usb/zr364xx/zr364xx.c:1377 [inline]
    [<00000000959ff4c6>] zr364xx_probe+0x6b3/0x833 drivers/media/usb/zr364xx/zr364xx.c:1509
    [<0000000027d8ae8f>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396
    [<0000000040436426>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<00000000b049c4a6>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745
    [<0000000052797cfc>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:851
    [<00000000b8c4f14b>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431
    [<00000000575d27a3>] __device_attach+0x122/0x250 drivers/base/dd.c:919
    [<000000001706509a>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491
    [<00000000e4d73bd0>] device_add+0x5be/0xc30 drivers/base/core.c:3091
    [<00000000b3b39ea6>] usb_set_configuration+0x9d9/0xb90 drivers/usb/core/message.c:2164
    [<00000000c7ff828c>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238
    [<00000000e7365d12>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293
    [<0000000040436426>] really_probe+0x159/0x480 drivers/base/dd.c:561
    [<00000000b049c4a6>] driver_probe_device+0x84/0x100 drivers/base/dd.c:745

Crashes (2):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Maintainers
ci-upstream-gce-leak	2021/01/08 14:39	upstream	f5e6c330	c104d4a3	.config	log	report	syz	C		linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, royale@zerezo.com
ci-upstream-gce-leak	2020/12/19 15:22	upstream	3644e2d2	04201c06	.config	log	report	syz	C		linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, royale@zerezo.com