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Date: Mon, 21 Aug 2006 15:35:41 +0800 From: Yao Fei Zhu <walkinair@...ibm.com> To: Nathan Lynch <ntl@...ox.com> CC: linux-kernel@...r.kernel.org Subject: Re: BUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:463 Nathan Lynch wrote: >Hi, > >Yao Fei Zhu wrote: > > >>Hi, all >> >>Online and offline cpus in 2.6.18-rc4/PPC64 will trigger Call Trace >>like this, >> >>[root@...de11 ~]# echo 0 > /sys/devices/system/cpu/cpu0/online >>[root@...de11 ~]# dmesg -c >>BUG: sleeping function called from invalid context at >>arch/powerpc/kernel/rtas.c:463 >>in_atomic():0, irqs_disabled():1 >>Call Trace: >>[C0000000725EB9C0] [C00000000000FB70] .show_stack+0x68/0x1b0 (unreliable) >>[C0000000725EBA60] [C000000000053EB4] .__might_sleep+0xd8/0xf4 >>[C0000000725EBAE0] [C00000000001D5D8] .rtas_busy_delay+0x20/0x5c >>[C0000000725EBB70] [C00000000001DC00] .rtas_set_indicator+0x6c/0xcc >>[C0000000725EBC10] [C000000000049130] .xics_migrate_irqs_away+0x6c/0x20c >>[C0000000725EBCD0] [C000000000048EEC] .pSeries_cpu_disable+0x98/0xb4 >>[C0000000725EBD50] [C000000000029A24] .__cpu_disable+0x44/0x58 >>[C0000000725EBDC0] [C000000000082030] .take_cpu_down+0x10/0x38 >>[C0000000725EBE40] [C000000000090000] .do_stop+0x16c/0x20c >>[C0000000725EBEE0] [C000000000078EBC] .kthread+0x128/0x178 >>[C0000000725EBF90] [C0000000000271DC] .kernel_thread+0x4c/0x68 >> >> > > >The fix for this was committed to Linus's tree after 2.6.18-rc4; look for > >[POWERPC] Fix might-sleep warning on removing cpus > >in the change history. >- >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >the body of a message to majordomo@...r.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ > > > Yes, tested the fix, thanks. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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