From: Jan Kiszka [EMAIL PROTECTED]
Stress-testing KVM's latest NMI support with kgdbts inside an SMP guest,
I came across spurious unhandled NMIs while running the singlestep test.
Looking closer at the code path each NMI takes when KGDB is enabled, I
noticed that kgdb_nmicallback is called twice
Linus, please pull the kgdb git tree fixes for 2.6.27-rc8
git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb.git
for_linus
Summary:
Testing the kgdb with kvm has found 2 problems:
- NMI code has a race where it can be invoked twice
- The softlockup watchdog must be
The softlockup watchdog needs to be touched when resuming the from the
kgdb stopped state to avoid the printk that a CPU is stuck if the
debugger was active for longer than the softlockup threshold.
Signed-off-by: Jason Wessel [EMAIL PROTECTED]
---
kernel/kgdb.c |3 +++
1 files changed, 3
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