Re: "irq/matrix: Spread interrupts on allocation" breaks nouveau in mainline kernel

Thomas Gleixner
2018-01-24T12:51:08Z

On Tue, 23 Jan 2018, Lyude Paul wrote:

> Hi! Sorry to be the bearer of bad news, but this patch actually seems to break
> suspending and resuming with nouveau on my machine:

> [ 31.003578] WARNING: CPU: 0 PID: 11523 at kernel/smp.c:291
> smp_call_function_single+0xdc/0xe0

This warning has absolutely no relationship to that patch.

> [ 31.003592] RIP: 0010:smp_call_function_single+0xdc/0xe0
> [ 31.003603] ? rdmsr_safe_on_cpu+0x4b/0x70
> [ 31.003604] rdmsr_safe_on_cpu+0x4b/0x70
> [ 31.003606] get_block_address.isra.0+0x6e/0xe0
> [ 31.003607] mce_amd_feature_init+0x63/0x2c0
> [ 31.003609] mce_syscore_resume+0x1e/0x30
> [ 31.003611] syscore_resume+0x4b/0x170
> [ 31.003613] suspend_devices_and_enter+0x608/0x7e0
> [ 31.003614] pm_suspend+0x315/0x380
> [ 31.003615] state_store+0x7d/0xe0
> [ 31.003618] kernfs_fop_write+0xfa/0x180
> [ 31.003620] __vfs_write+0x23/0x130
> [ 31.003623] ? SYSC_newfstat+0x29/0x40
> [ 31.003625] ? _cond_resched+0x15/0x40
> [ 31.003626] vfs_write+0xad/0x1a0
> [ 31.003627] SyS_write+0x42/0x90
> [ 31.003629] entry_SYSCALL_64_fastpath+0x24/0x87

Borislav?

Thanks,

tglx