Ubuntu
linux package

  1. Xenial (16.04)
  2. Bug #1747134
  3. Comment #0

Comment 0 for bug 1747134

Revision history for this message
quanxian (quanxian-wang) wrote :

Description:
Customer report a Ubuntu kernel issue related to Intel BDX Core numbers setting
Ubuntu 16.04.3 with kernel "4.10.0-32-generic_4.10.0-32.36~16.04.1_amd64" hang if set "Cores Enabled" to 2 for both CPU.

We have reproduced this issue on 17.10 release.

With latest kernel, this issue disappears.

now we bisect this issue is fixed by commit 6d60ce384d1d (“x86/mm/kmmio: Fix mmiotrace for page unaligned addresses”) which was merged in v4.15-rc4.

But after applying this commit to Ubuntu 16.04.3 kernel v4.13 code base or Linux upstream mainline kernel v4.13 code base, this issue still exists.

Target Release: 16.04 / 17.10