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memory leak in _r8712_init_xmit_priv

Status: fixed on 2023/10/12 12:47
Subsystems: staging usb
[Documentation on labels]
Reported-by: syzbot+cf71097ffb6755df8251@syzkaller.appspotmail.com
Fix commit: ac83631230f7 staging: r8712: Fix memory leak in _r8712_init_xmit_priv()
First crash: 293d, last: 293d
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[PATCH v2] staging: r8712: Fix memory leak in _r8712_init_xmit_priv() 2 (2) 2023/07/19 06:55
[PATCH] staging: 7811: Fix memory leak in _r8712_init_xmit_priv 4 (4) 2023/07/13 20:10
[syzbot] [staging?] [usb?] memory leak in _r8712_init_xmit_priv 0 (1) 2023/07/12 15:05
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream memory leak in _r8712_init_xmit_priv (2) staging usb C 2 144d 159d 0/26 upstream: reported C repro on 2023/11/20 00:09

Sample crash report:
executing program
BUG: memory leak
unreferenced object 0xffff88810a4db000 (size 4096):
  comm "kworker/0:3", pid 4752, jiffies 4294941496 (age 19.480s)
  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:
    [<ffffffff8154bfa4>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076
    [<ffffffff83c3bf41>] kmalloc include/linux/slab.h:582 [inline]
    [<ffffffff83c3bf41>] _r8712_init_xmit_priv+0x2b1/0x660 drivers/staging/rtl8712/rtl871x_xmit.c:131
    [<ffffffff83c36b86>] r8712_init_drv_sw+0xc6/0x260 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83c35766>] r871xu_drv_init+0x1f6/0x9d0 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff83237329>] usb_probe_interface+0x179/0x3c0 drivers/usb/core/driver.c:396
    [<ffffffff82ba039d>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82ba039d>] really_probe+0x12d/0x430 drivers/base/dd.c:658
    [<ffffffff82ba0761>] __driver_probe_device+0xc1/0x1a0 drivers/base/dd.c:798
    [<ffffffff82ba086a>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:828
    [<ffffffff82ba0a5b>] __device_attach_driver+0xfb/0x150 drivers/base/dd.c:956
    [<ffffffff82b9d7b1>] bus_for_each_drv+0xc1/0x110 drivers/base/bus.c:457
    [<ffffffff82ba0f82>] __device_attach+0x102/0x2a0 drivers/base/dd.c:1028
    [<ffffffff82b9ef1a>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82b9b513>] device_add+0x993/0xc60 drivers/base/core.c:3625
    [<ffffffff83234409>] usb_set_configuration+0x9a9/0xc90 drivers/usb/core/message.c:2211
    [<ffffffff83246ed1>] usb_generic_driver_probe+0xa1/0x100 drivers/usb/core/generic.c:238
    [<ffffffff83236a00>] usb_probe_device+0x60/0x140 drivers/usb/core/driver.c:293

BUG: memory leak
unreferenced object 0xffff88810a4de000 (size 4096):
  comm "kworker/0:3", pid 4752, jiffies 4294941496 (age 19.480s)
  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:
    [<ffffffff8154bfa4>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076
    [<ffffffff83c3bf41>] kmalloc include/linux/slab.h:582 [inline]
    [<ffffffff83c3bf41>] _r8712_init_xmit_priv+0x2b1/0x660 drivers/staging/rtl8712/rtl871x_xmit.c:131
    [<ffffffff83c36b86>] r8712_init_drv_sw+0xc6/0x260 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83c35766>] r871xu_drv_init+0x1f6/0x9d0 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff83237329>] usb_probe_interface+0x179/0x3c0 drivers/usb/core/driver.c:396
    [<ffffffff82ba039d>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82ba039d>] really_probe+0x12d/0x430 drivers/base/dd.c:658
    [<ffffffff82ba0761>] __driver_probe_device+0xc1/0x1a0 drivers/base/dd.c:798
    [<ffffffff82ba086a>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:828
    [<ffffffff82ba0a5b>] __device_attach_driver+0xfb/0x150 drivers/base/dd.c:956
    [<ffffffff82b9d7b1>] bus_for_each_drv+0xc1/0x110 drivers/base/bus.c:457
    [<ffffffff82ba0f82>] __device_attach+0x102/0x2a0 drivers/base/dd.c:1028
    [<ffffffff82b9ef1a>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82b9b513>] device_add+0x993/0xc60 drivers/base/core.c:3625
    [<ffffffff83234409>] usb_set_configuration+0x9a9/0xc90 drivers/usb/core/message.c:2211
    [<ffffffff83246ed1>] usb_generic_driver_probe+0xa1/0x100 drivers/usb/core/generic.c:238
    [<ffffffff83236a00>] usb_probe_device+0x60/0x140 drivers/usb/core/driver.c:293

BUG: memory leak
unreferenced object 0xffff88810a4d9000 (size 4096):
  comm "kworker/0:3", pid 4752, jiffies 4294941496 (age 19.480s)
  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:
    [<ffffffff8154bfa4>] kmalloc_trace+0x24/0x90 mm/slab_common.c:1076
    [<ffffffff83c3bf41>] kmalloc include/linux/slab.h:582 [inline]
    [<ffffffff83c3bf41>] _r8712_init_xmit_priv+0x2b1/0x660 drivers/staging/rtl8712/rtl871x_xmit.c:131
    [<ffffffff83c36b86>] r8712_init_drv_sw+0xc6/0x260 drivers/staging/rtl8712/os_intfs.c:311
    [<ffffffff83c35766>] r871xu_drv_init+0x1f6/0x9d0 drivers/staging/rtl8712/usb_intf.c:386
    [<ffffffff83237329>] usb_probe_interface+0x179/0x3c0 drivers/usb/core/driver.c:396
    [<ffffffff82ba039d>] call_driver_probe drivers/base/dd.c:579 [inline]
    [<ffffffff82ba039d>] really_probe+0x12d/0x430 drivers/base/dd.c:658
    [<ffffffff82ba0761>] __driver_probe_device+0xc1/0x1a0 drivers/base/dd.c:798
    [<ffffffff82ba086a>] driver_probe_device+0x2a/0x120 drivers/base/dd.c:828
    [<ffffffff82ba0a5b>] __device_attach_driver+0xfb/0x150 drivers/base/dd.c:956
    [<ffffffff82b9d7b1>] bus_for_each_drv+0xc1/0x110 drivers/base/bus.c:457
    [<ffffffff82ba0f82>] __device_attach+0x102/0x2a0 drivers/base/dd.c:1028
    [<ffffffff82b9ef1a>] bus_probe_device+0xca/0xd0 drivers/base/bus.c:532
    [<ffffffff82b9b513>] device_add+0x993/0xc60 drivers/base/core.c:3625
    [<ffffffff83234409>] usb_set_configuration+0x9a9/0xc90 drivers/usb/core/message.c:2211
    [<ffffffff83246ed1>] usb_generic_driver_probe+0xa1/0x100 drivers/usb/core/generic.c:238
    [<ffffffff83236a00>] usb_probe_device+0x60/0x140 drivers/usb/core/driver.c:293

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/08 14:53 upstream 8689f4f2ea56 668cb1fa .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-gce-leak memory leak in _r8712_init_xmit_priv
* Struck through repros no longer work on HEAD.