Re: [Bug 216073] New: [s390x] kernel BUG at mm/usercopy.c:101! usercopy: Kernel memory exposure attempt detected from vmalloc 'n o area' (offset 0, size 1)!

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

 



On Wed, Jun 08, 2022 at 09:13:12PM +0200, Alexander Gordeev wrote:
> On Wed, Jun 08, 2022 at 10:19:22AM +0800, Zorro Lang wrote:
> > One of the test environment details as [1]. The xfstests config as [2].
> > It's easier to reproduce on 64k directory size xfs by running xfstests
> > auto group.
> 
> 
> Thanks for the details, Zorro!
> 
> Do you create test and scratch device with xfs_io, as README suggests?
> If yes, what are sizes of the files?

# fallocate -l 5G /home/test_dev.img
# fallocate -l 10G /home/scratch_dev.img
Then create loop devices.


> Also, do you run always xfs/auto or xfs/294 hits for you reliably?

100% for on my testing, I tried 10 times, then hit it 10 times last
weekend. Will test again this week.

> 
> Thanks!
> 




[Index of Archives]     [XFS Filesystem Development (older mail)]     [Linux Filesystem Development]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux RAID]     [Linux SCSI]


  Powered by Linux