Fixed
Created: Sep 6, 2015
Updated: Dec 3, 2018
Resolved Date: Sep 15, 2015
Previous ID: LIN5-20749
Found In Version: 6.0.0.23
Fix Version: 6.0.0.25
Severity: Standard
Applicable for: Wind River Linux 6
Component/s: Kernel
Kernl oops occurs by detaching USB memory device.
Target board: Kontron KM2M806 (Intel Atom E6xx, EG20T chipset)
1. Create a new platform project.
$WIND_LINUX_CONFIGURE --enable-board=intel-atom \
--enable-build=production --enable-kernel=preempt-rt \
--enable-rootfs=glibc_std+debug \
--enable-jobs=6 --enable-parallel-pkgbuilds=6 \
--with-sstate-dir=/home/wrs/Build/sstate \
--with-rcpl-version=0028
2. Change kernel configuration.
CONFIG_USB_GADGET (y -> m)
CONFIG_USB_ETH (n -> m)
3. Build project.
make
4. Boot WRL5.0.1.28 on target.
<< By repeating below 5 and 6, kernel oops occurs >>
5. Attach USB memory device to the board.
(a) Attach to USB 2.0 (Type A) Port.
The issue does not occur on MicroUSB Port
(b) Do not use USB hub, and directly attach to USB port.
6. Detach USB memory device.
By attaching USB memory,
usb 2-1: new high-speed USB device number 2 using ehci_hcd
scsi2 : usb-storage 2-1:1.0
the above 2 lines are displayed, and the below message is displayed about 2 seconds later.
Detach USB memory device just after the log "scsi 2:0:0:0: Direct-Access ~" is displayed.
scsi 2:0:0:0: Direct-Access ELECOM MF-HMU2 PMAP PQ: 0 ANSI: 4
usb 2-1: USB disconnect, device number 50
sd 2:0:0:0: [sdb] 15141504 512-byte logical blocks: (7.75 GB/7.21 GiB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] No Caching mode page found
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sd 2:0:0:0: [sdb] No Caching mode page found
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sdb: sdb1
sd 2:0:0:0: [sdb] No Caching mode page found
sd 2:0:0:0: [sdb] Assuming drive cache: write through
sd 2:0:0:0: [sdb] Attached SCSI removable disk
This issue occurs 5 times out of 500 times attaching and detaching USB memory device.
