On 2015/9/7 4:31, Arthur Marsh wrote: > Arthur Marsh wrote on 06/09/15 21:07: >> Arthur Marsh wrote on 06/09/15 18:34: >>> Arthur Marsh wrote on 06/09/15 15:58: >>>> Hi, I'm seeing the following on post 4.2 kernels, am currently >>>> bisecting >>>> to find where it started: >> >> First kernel in the bisection that worked without needing irqpoll: >> >> [ 73.751482] EATA0: IRQ 10 mapped to IO-APIC IRQ 17. >> [ 73.776711] EATA/DMA 2.0x: Copyright (C) 1994-2003 Dario Ballabio. >> [ 73.802005] EATA config options -> tm:1, lc:y, mq:16, rs:y, et:n, >> ip:n, ep:n, pp:y. >> [ 73.829175] EATA0: 2.0C, PCI 0xd890, IRQ 17, BMST, SG 122, MB 64. >> [ 73.855552] EATA0: wide SCSI support enabled, max_id 16, max_lun 8. >> [ 73.881125] EATA0: SCSI channel 0 enabled, host target ID 7. > > After a git bisect, I get: > > git bisect good > 991de2e59090e55c65a7f59a049142e3c480f7bd is the first bad commit > commit 991de2e59090e55c65a7f59a049142e3c480f7bd > Author: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx> > Date: Wed Jun 10 16:54:59 2015 +0800 > > PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq() > > To support IOAPIC hotplug, we need to allocate PCI IRQ resources on > demand > and free them when not used anymore. > > Implement pcibios_alloc_irq() and pcibios_free_irq() to dynamically > allocate and free PCI IRQs. > > Remove mp_should_keep_irq(), which is no longer used. > > [bhelgaas: changelog] > Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx> > Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > > :040000 040000 765e2d5232d53247ec260b34b51589c3bccb36ae > f680234a27685e94b1a35ae2a7218f8eafa9071a M arch > :040000 040000 d55a682bcde72682e883365e88ad1df6186fd54d > f82c470a04a6845fcf5e0aa934512c75628f798d M drivers > > I'm happy to supply more details if needed. Hi Arthur, Thanks for reporting this. It seems to be an irq misrouting issue. Could you please help to provide: 1) full dmesg with the latest code 2) full dmesg and /proc/interrupts with the latest code and kernel parameter "irqpoll" specified Thanks! Gerry > > Regards, > > Arthur. > > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
