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Groups > linux.kernel > #1175862
| From | "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online |
| Date | 2015-07-02 11:30 +0200 |
| Message-ID | <pHIYG-QJ-11@gated-at.bofh.it> (permalink) |
| References | <pHE8G-6jo-5@gated-at.bofh.it> <pHGDv-7IS-9@gated-at.bofh.it> <pHGNb-81t-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 2015/7/2 15:02, Xiao, Jin wrote: > Hi Joerg, > > On 7/2/2015 2:52 PM, Joerg Roedel wrote: >> Hi Jin, >> >> On Thu, Jul 02, 2015 at 12:24:34PM +0800, xiao jin wrote: >>> [ 106.107851] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 >>> [ 106.116702] IP: >>> [ 106.118490] [<ffffffff810044f6>] check_irq_vectors_for_cpu_disable+0x76/0x180 >> This might be the same issue I fixed with: >> >> d97eb8966c91 x86/irq: Check for valid irq descriptor in check_irq_vectors_for_cpu_disable() >> >> Can you try whether applying this patch on your kernel fixes your >> issue? >> > Yes, I agree d97eb8966c91 fix the IPANIC. I just notice a description from http://lkml.kernel.org/r/20150204132754.GA10078@suse.de. > > I wish to share the debug result and root cause from my side. commit d97eb8966c91f2c9d05f0a22eb89ed5b76d966d1 looks like a workaround. Could Jin's patch be merged also? free_msi_irqs does have a race with smp_callin=>..=>__setup_vector_irq. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> - 2015-07-02 11:30 +0200
Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online Thomas Gleixner <tglx@linutronix.de> - 2015-07-02 15:00 +0200
Re: [PATCH] smpboot.c: move setup_vector_irq after set_cpu_online "Xiao, Jin" <jin.xiao@intel.com> - 2015-07-03 04:10 +0200
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