On Sat, Jul 26, 2014 at 02:05:28PM +0800, 陈华才 wrote: > Hi, > > I'm debugging, please wait for some time. Great, thanks! Does it means you have been able to reproduce the issue? If not I can provide you a copy of the chroot I used to reproduce the issue. I also tried with the kernel from http://dev.lemote.com/cgit/linux-official.git/ but unfortunately I haven't been able to get it working correctly with PREEMPT_VOLUNTARY=yes. I have tried with the kernel from the master branch and after merging the v3.15.6 tag. In one of the case I got the following backtrace on the serial console: | [ 75.128906] irq 17, desc: ffffffff80c911e0, depth: 1, count: 0, unhandled: 0 | [ 75.136718] ->handle_irq(): ffffffff80289a18, handle_bad_irq+0x0/0x2d0 | [ 75.144531] ->irq_data.chip(): ffffffff80cbe210, 0xffffffff80cbe210 | [ 75.144531] ->action(): (null) | [ 75.144531] IRQ_NOPROBE set | [ 75.144531] unexpected IRQ # 17 Aurelien -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurelien@xxxxxxxxxxx http://www.aurel32.net