While booting Linux mainline master 5.12.0-rc2 and 5.12.0-rc3 on arm64
Hikey device the following KFENCE bug was found.
Recently, we have enabled CONFIG_KFENCE=y and started seeing this crash.
kernel BUG log:
[ 18.243075] BUG: KFENCE: memory corruption in
usb_get_device_descriptor+0x80/0xb0
[ 18.243075]
[ 18.253016] Corrupted memory at 0x00000000bb4567e7 [ ! ! . . . . .
. . . . . . . . . ] (in kfence-#118):
[ 18.263817] usb_get_device_descriptor+0x80/0xb0
[ 18.268978] hub_port_init+0x3e8/0xb70
[ 18.273189] hub_event+0x578/0x1628
[ 18.277109] process_one_work+0x1c8/0x488
[ 18.281593] worker_thread+0x54/0x428
[ 18.285692] kthread+0x120/0x158
[ 18.289320] ret_from_fork+0x10/0x34
[ 18.293330]
[ 18.295018] kfence-#118 [0x00000000b55b54e8-0x000000001fc57965,
size=18, cache=kmalloc-128] allocated by task 204:
[ 18.306534] usb_get_device_descriptor+0x40/0xb0
[ 18.311693] hub_port_init+0x3e8/0xb70
[ 18.315900] hub_event+0x578/0x1628
[ 18.319819] process_one_work+0x1c8/0x488
[ 18.324301] worker_thread+0x54/0x428
[ 18.328397] kthread+0x120/0x158
[ 18.332024] ret_from_fork+0x10/0x34
root@hikey:~# [ 18.33603. /lava-2388200/environment
3]
[ 18.338544] CPU: 7 PID: 204 Comm: kworker/7:2 Not tainted 5.12.0-rc2 #2
[ 18.345902] Hardware name: HiKey Development Board (DT)
[ 18.351715] Workqueue: usb_hub_wq hub_event
[ 18.356428] ==================================================================
. /lava[ 18.805771]
==================================================================
[ 18.813861] BUG: KFENCE: memory corruption in
__usbnet_read_cmd.isra.0+0xd0/0x1a0
[ 18.813861]
[ 18.823804] Corrupted memory at 0x000000007cedde53 [ ! ! ! . . . .
. . . . . . . . . ] (in kfence-#121):
[ 18.834603] __usbnet_read_cmd.isra.0+0xd0/0x1a0
[ 18.839765] usbnet_read_cmd+0x70/0xa8
[ 18.843965] asix_read_cmd+0x60/0xa0
[ 18.847981] ax88772a_hw_reset+0x148/0x468
[ 18.852570] ax88772_bind+0x1c8/0x310
[ 18.856683] usbnet_probe+0x29c/0x7d8
[ 18.860788] usb_probe_interface+0xe0/0x2c0
-[ 18.865236] really_probe+0xf0/0x4d8
[ 18.869016] driver_probe_device+0xfc/0x168
[ 18.873430] __device_attach_driver+0x94/0x120
[ 18.878116] bus_for_each_drv+0x80/0xd8
[ 18.882165] __device_attach+0xfc/0x180
[ 18.886214] device_initial_probe+0x1c/0x28
[ 18.890627] bus_probe_device+0xa4/0xb0
[ 18.894676] device_add+0x3a8/0x7e8
[ 18.898357] usb_set_configuration+0x488/0x8e8
[ 18.903044] usb_generic_driver_probe+0x58/0x98
[ 18.907823] usb_probe_device+0x44/0x108
[ 18.911964] really_probe+0xf0/0x4d8
2[ 18.924600] driver_probe_device+0xfc/0x168
[ 18.937379] __device_attach_driver+0x94/0x120
[ 18.950406] bus_for_each_drv+0x80/0xd8
[ 18.960383] __device_attach+0xfc/0x180
[ 18.969078] device_initial_probe+0x1c/0x28
3[ 18.977855] bus_probe_device+0xa4/0xb0
[ 18.986226] device_add+0x3a8/0x7e8
[ 18.994190] usb_new_device+0x1e0/0x590
[ 19.002475] hub_event+0x5ec/0x1628
[ 19.010352] process_one_work+0x1c8/0x488
[ 19.018792] worker_thread+0x54/0x428
[ 19.026921] kthread+0x120/0x158
[ 19.034614] ret_from_fork+0x10/0x34
8[ 19.042712]
[ 19.048623] kfence-#121 [0x000000008a763b3c-0x000000008a763b3c,
size=1, cache=kmalloc-128] allocated by task 204:
[ 19.063612] __usbnet_read_cmd.isra.0+0x60/0x1a0
[ 19.072924] usbnet_read_cmd+0x70/0xa8
[ 19.081325] asix_read_cmd+0x60/0xa0
[ 19.089503] ax88772a_hw_reset+0x148/0x468
8[ 19.098163] ax88772_bind+0x1c8/0x310
[ 19.106312] usbnet_probe+0x29c/0x7d8
[ 19.114407] usb_probe_interface+0xe0/0x2c0
[ 19.122950] really_probe+0xf0/0x4d8
[ 19.130811] driver_probe_device+0xfc/0x168
[ 19.139273] __device_attach_driver+0x94/0x120
[ 19.148025] bus_for_each_drv+0x80/0xd8
[ 19.156148] __device_attach+0xfc/0x180
2[ 19.164287] device_initial_probe+0x1c/0x28
[ 19.172782] bus_probe_device+0xa4/0xb0
[ 19.180948] device_add+0x3a8/0x7e8
[ 19.188758] usb_set_configuration+0x488/0x8e8
[ 19.197455] usb_generic_driver_probe+0x58/0x98
[ 19.206120] usb_probe_device+0x44/0x108
[ 19.214175] really_probe+0xf0/0x4d8
0[ 19.221885] driver_probe_device+0xfc/0x168
[ 19.230202] __device_attach_driver+0x94/0x120
[ 19.238794] bus_for_each_drv+0x80/0xd8
[ 19.246780] __device_attach+0xfc/0x180
[ 19.254790] device_initial_probe+0x1c/0x28
[ 19.263145] bus_probe_device+0xa4/0xb0
[ 19.271111] device_add+0x3a8/0x7e8
0[ 19.278682] usb_new_device+0x1e0/0x590
[ 19.286583] hub_event+0x5ec/0x1628
[ 19.294055] process_one_work+0x1c8/0x488
[ 19.302102] worker_thread+0x54/0x428
[ 19.309743] kthread+0x120/0x158
[ 19.316894] ret_from_fork+0x10/0x34
[ 19.324306]
[ 19.329495] CPU: 7 PID: 204 Comm: kworker/7:2 Tainted: G B
5.12.0-rc2 #2
/[ 19.341360] Hardware name: HiKey Development Board (DT)
[ 19.350439] Workqueue: usb_hub_wq hub_event
Reported-by: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
metadata:
git branch: master
git repo: https://gitlab.com/Linaro/lkft/mirrors/torvalds/linux-mainline
git commit: f296bfd5cd04cbb49b8fc9585adc280ab2b58624
git describe: v5.12-rc2-487-gf296bfd5cd04
make_kernelversion: 5.12.0-rc2
kernel-config: https://builds.tuxbuild.com/1pfztfszUNcDwOAyMrw2wPMKNfc/config
--
Linaro LKFT
https://lkft.linaro.org
