linux-kernel - [syzbot] [staging?] [usb?] memory leak in _r8712_init_xmit

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Message-ID: <000000000000809328060a8a4c1c@google.com>
Date:   Sun, 19 Nov 2023 16:09:25 -0800
From:   syzbot <syzbot+83763e624cfec6b462cb@...kaller.appspotmail.com>
To:     Larry.Finger@...inger.net, florian.c.schilhabel@...glemail.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-usb@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [staging?] [usb?] memory leak in _r8712_init_xmit_priv (2)

Hello,

syzbot found the following issue on:

HEAD commit:    c42d9eeef8e5 Merge tag 'hardening-v6.7-rc2' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13bff22f680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e71d284dd6560ca8
dashboard link: https://syzkaller.appspot.com/bug?extid=83763e624cfec6b462cb
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1564223f680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17a7c024e80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/026cc0fc446f/disk-c42d9eee.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c4b4d6d092c1/vmlinux-c42d9eee.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1865f885e9d6/bzImage-c42d9eee.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83763e624cfec6b462cb@...kaller.appspotmail.com

executing program
BUG: memory leak
unreferenced object 0xffff888107a5c000 (size 4096):
  comm "kworker/1:0", pid 22, jiffies 4294943134 (age 18.720s)
  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:
    [<ffffffff816337cd>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]
    [<ffffffff816337cd>] slab_post_alloc_hook mm/slab.h:766 [inline]
    [<ffffffff816337cd>] slab_alloc_node mm/slub.c:3478 [inline]
    [<ffffffff816337cd>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517
    [<ffffffff8157e625>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098
    [<ffffffff83cee442>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff83cee442>] _r8712_init_xmit_priv+0x2b2/0x6e0 drivers/staging/rtl8712/rtl871x_xmit.c:130
    [<ffffffff83ce9033>] r8712_init_drv_sw+0xc3/0x290 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83ce7ce6>] r871xu_drv_init+0x1c6/0x920 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff832d0f0b>] usb_probe_interface+0x16b/0x3a0 drivers/usb/core/driver.c:396
    [<ffffffff82c3bb06>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82c3bb06>] really_probe+0x126/0x440 drivers/base/dd.c:658
    [<ffffffff82c3bee3>] __driver_probe_device+0xc3/0x190 drivers/base/dd.c:800
    [<ffffffff82c3bfda>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:830
    [<ffffffff82c3c1d4>] __device_attach_driver+0x104/0x160 drivers/base/dd.c:958
    [<ffffffff82c38f5d>] bus_for_each_drv+0xcd/0x120 drivers/base/bus.c:457
    [<ffffffff82c3c6fa>] __device_attach+0xfa/0x290 drivers/base/dd.c:1030
    [<ffffffff82c3a6ca>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82c36b7e>] device_add+0x9be/0xc90 drivers/base/core.c:3625
    [<ffffffff832cdfd7>] usb_set_configuration+0x967/0xc70 drivers/usb/core/message.c:2207
    [<ffffffff832e0cac>] usb_generic_driver_probe+0x9c/0xf0 drivers/usb/core/generic.c:238

BUG: memory leak
unreferenced object 0xffff888107a59000 (size 4096):
  comm "kworker/1:0", pid 22, jiffies 4294943134 (age 18.720s)
  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:
    [<ffffffff816337cd>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]
    [<ffffffff816337cd>] slab_post_alloc_hook mm/slab.h:766 [inline]
    [<ffffffff816337cd>] slab_alloc_node mm/slub.c:3478 [inline]
    [<ffffffff816337cd>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517
    [<ffffffff8157e625>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098
    [<ffffffff83cee442>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff83cee442>] _r8712_init_xmit_priv+0x2b2/0x6e0 drivers/staging/rtl8712/rtl871x_xmit.c:130
    [<ffffffff83ce9033>] r8712_init_drv_sw+0xc3/0x290 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83ce7ce6>] r871xu_drv_init+0x1c6/0x920 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff832d0f0b>] usb_probe_interface+0x16b/0x3a0 drivers/usb/core/driver.c:396
    [<ffffffff82c3bb06>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82c3bb06>] really_probe+0x126/0x440 drivers/base/dd.c:658
    [<ffffffff82c3bee3>] __driver_probe_device+0xc3/0x190 drivers/base/dd.c:800
    [<ffffffff82c3bfda>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:830
    [<ffffffff82c3c1d4>] __device_attach_driver+0x104/0x160 drivers/base/dd.c:958
    [<ffffffff82c38f5d>] bus_for_each_drv+0xcd/0x120 drivers/base/bus.c:457
    [<ffffffff82c3c6fa>] __device_attach+0xfa/0x290 drivers/base/dd.c:1030
    [<ffffffff82c3a6ca>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82c36b7e>] device_add+0x9be/0xc90 drivers/base/core.c:3625
    [<ffffffff832cdfd7>] usb_set_configuration+0x967/0xc70 drivers/usb/core/message.c:2207
    [<ffffffff832e0cac>] usb_generic_driver_probe+0x9c/0xf0 drivers/usb/core/generic.c:238

BUG: memory leak
unreferenced object 0xffff888108475000 (size 4096):
  comm "kworker/1:0", pid 22, jiffies 4294943134 (age 18.720s)
  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:
    [<ffffffff816337cd>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline]
    [<ffffffff816337cd>] slab_post_alloc_hook mm/slab.h:766 [inline]
    [<ffffffff816337cd>] slab_alloc_node mm/slub.c:3478 [inline]
    [<ffffffff816337cd>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517
    [<ffffffff8157e625>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098
    [<ffffffff83cee442>] kmalloc include/linux/slab.h:600 [inline]
    [<ffffffff83cee442>] _r8712_init_xmit_priv+0x2b2/0x6e0 drivers/staging/rtl8712/rtl871x_xmit.c:130
    [<ffffffff83ce9033>] r8712_init_drv_sw+0xc3/0x290 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83ce7ce6>] r871xu_drv_init+0x1c6/0x920 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff832d0f0b>] usb_probe_interface+0x16b/0x3a0 drivers/usb/core/driver.c:396
    [<ffffffff82c3bb06>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82c3bb06>] really_probe+0x126/0x440 drivers/base/dd.c:658
    [<ffffffff82c3bee3>] __driver_probe_device+0xc3/0x190 drivers/base/dd.c:800
    [<ffffffff82c3bfda>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:830
    [<ffffffff82c3c1d4>] __device_attach_driver+0x104/0x160 drivers/base/dd.c:958
    [<ffffffff82c38f5d>] bus_for_each_drv+0xcd/0x120 drivers/base/bus.c:457
    [<ffffffff82c3c6fa>] __device_attach+0xfa/0x290 drivers/base/dd.c:1030
    [<ffffffff82c3a6ca>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82c36b7e>] device_add+0x9be/0xc90 drivers/base/core.c:3625
    [<ffffffff832cdfd7>] usb_set_configuration+0x967/0xc70 drivers/usb/core/message.c:2207
    [<ffffffff832e0cac>] usb_generic_driver_probe+0x9c/0xf0 drivers/usb/core/generic.c:238



---
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