Re: Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Richard W.M. Jones
On Thu, Mar 17, 2016 at 01:54:36PM -0400, Josh Boyer wrote: > Hi Thomas, > > We've had a report [1] of the mainline kernel crashing on a single-cpu > QEMU machine (not kvm) in Fedora. It looks as if the emulated machine > is failing to provide a TSC and the calibrate_delay_is_known function > is

Re: Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Richard W.M. Jones
On Thu, Mar 17, 2016 at 01:54:36PM -0400, Josh Boyer wrote: > Hi Thomas, > > We've had a report [1] of the mainline kernel crashing on a single-cpu > QEMU machine (not kvm) in Fedora. It looks as if the emulated machine > is failing to provide a TSC and the calibrate_delay_is_known function > is

Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Josh Boyer
Hi Thomas, We've had a report [1] of the mainline kernel crashing on a single-cpu QEMU machine (not kvm) in Fedora. It looks as if the emulated machine is failing to provide a TSC and the calibrate_delay_is_known function is passing NULL to cpumask_any_but for the mask parameter. At least

Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Josh Boyer
Hi Thomas, We've had a report [1] of the mainline kernel crashing on a single-cpu QEMU machine (not kvm) in Fedora. It looks as if the emulated machine is failing to provide a TSC and the calibrate_delay_is_known function is passing NULL to cpumask_any_but for the mask parameter. At least

Re: Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Thomas Gleixner
Josh, On Thu, 17 Mar 2016, Josh Boyer wrote: > We've had a report [1] of the mainline kernel crashing on a single-cpu > QEMU machine (not kvm) in Fedora. It looks as if the emulated machine > is failing to provide a TSC and the calibrate_delay_is_known function > is passing NULL to

Re: Oops from calibrate_delay_is_known on qemu machine with Linux v4.5-1523-g271ecc5253e2

2016-03-19 Thread Thomas Gleixner
Josh, On Thu, 17 Mar 2016, Josh Boyer wrote: > We've had a report [1] of the mainline kernel crashing on a single-cpu > QEMU machine (not kvm) in Fedora. It looks as if the emulated machine > is failing to provide a TSC and the calibrate_delay_is_known function > is passing NULL to