Re: [bug report] Don't enter SCSI error handler on kernel 4.16-rc1

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





在 2018/2/26 23:25, Bart Van Assche 写道:
On Mon, 2018-02-26 at 17:37 +0800, chenxiang (M) wrote:
When i have a test on kernel 4.16-rc1, find a issue: running IO on SATA disk, then disable the disk through
sysfs interface(echo 0 > /sys/class/sas_phy/phy-1:0:0/enable), IO will hang and never enter SCSI EH. The issue
appears every time.

I add some prints on code and find that  those IOs will be timeout after 30s, and they all enter
function scsi_eh_scmd_add, but only some of them can enter function scsi_eh_inc_host_failed. So it will never
enter SCSI EH.  I suspect it is related to the patch ("commit 3bd6f43f5cb371" scsi: core: Ensure that the
SCSI error handler gets woken up ). Please have a check.
Hello chenxiang,

Had you already noticed patch "[PATCH v2] Avoid that ATA error handling can
trigger a kernel hang or oops"? If not, can you apply that patch to your
kernel and verify whether it fixes this behavior? See also
https://www.mail-archive.com/linux-scsi@xxxxxxxxxxxxxxx/msg71189.html or
https://patchwork.kernel.org/patch/10236213/.

Ok, i will verify the patch.

Thanks,

Bart.





[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]

  Powered by Linux