Paul Burton 547aefc4db irqchip/mips-gic: Match IPI IRQ domain by bus token only ... Commit fbde2d7d82 ("MIPS: Add generic SMP IPI support") introduced code which calls irq_find_matching_host with a NULL node parameter in order to discover IPI IRQ domains which are not associated with the DT root node's interrupt parent. This suggests that implementations of IPI IRQ domains should effectively ignore the node parameter if it is NULL and search purely based upon the bus token. Commit 2af70a9620 ("irqchip/mips-gic: Add a IPI hierarchy domain") did not do this when implementing the GIC IPI IRQ domain, and on MIPS Boston boards this leads to no IPI domain being discovered and a NULL pointer dereference when attempting to send an IPI: CPU 0 Unable to handle kernel paging request at virtual address 0000000000000040, epc == ffffffff8016e70c, ra == ffffffff8010ff5c Oops[#1]: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc6-00223-gad0d1b6 #945 task: a8000000ff066fc0 ti: a8000000ff068000 task.ti: a8000000ff068000 $ 0 : 0000000000000000 0000000000000001 ffffffff80730000 0000000000000003 $ 4 : 0000000000000000 ffffffff8057e5b0 a800000001e3ee00 0000000000000000 $ 8 : 0000000000000000 0000000000000023 0000000000000001 0000000000000001 $12 : 0000000000000000 ffffffff803323d0 0000000000000000 0000000000000000 $16 : 0000000000000000 0000000000000000 0000000000000001 ffffffff801108fc $20 : 0000000000000000 ffffffff8057e5b0 0000000000000001 0000000000000000 $24 : 0000000000000000 ffffffff8012de28 $28 : a8000000ff068000 a8000000ff06fbc0 0000000000000000 ffffffff8010ff5c Hi : ffffffff8014c174 Lo : a800000001e1e140 epc : ffffffff8016e70c __ipi_send_mask+0x24/0x11c ra : ffffffff8010ff5c mips_smp_send_ipi_mask+0x68/0x178 Status: 140084e2 KX SX UX KERNEL EXL Cause : 00800008 (ExcCode 02) BadVA : 0000000000000040 PrId : 0001a920 (MIPS I6400) Process swapper/0 (pid: 1, threadinfo=a8000000ff068000, task=a8000000ff066fc0, tls=0000000000000000) Stack : 0000000000000000 0000000000000000 0000000000000001 ffffffff801108fc 0000000000000000 ffffffff8057e5b0 0000000000000001 ffffffff8010ff5c 0000000000000001 0000000000000020 0000000000000000 0000000000000000 0000000000000000 ffffffff801108fc 0000000000000000 0000000000000001 0000000000000001 0000000000000000 0000000000000000 ffffffff801865e8 a8000000ff0c7500 a8000000ff06fc90 0000000000000001 0000000000000002 ffffffff801108fc ffffffff801868b8 0000000000000000 ffffffff801108fc 0000000000000000 0000000000000003 ffffffff8068c700 0000000000000001 ffffffff80730000 0000000000000001 a8000000ff00a290 ffffffff80110c50 0000000000000003 a800000001e48308 0000000000000003 0000000000000008 ... Call Trace: [<ffffffff8016e70c>] __ipi_send_mask+0x24/0x11c [<ffffffff8010ff5c>] mips_smp_send_ipi_mask+0x68/0x178 [<ffffffff801865e8>] generic_exec_single+0x150/0x170 [<ffffffff801868b8>] smp_call_function_single+0x108/0x160 [<ffffffff80110c50>] cps_boot_secondary+0x328/0x394 [<ffffffff80110534>] __cpu_up+0x38/0x90 [<ffffffff8012de4c>] bringup_cpu+0x24/0xac [<ffffffff8012df40>] cpuhp_up_callbacks+0x58/0xdc [<ffffffff8012e648>] cpu_up+0x118/0x18c [<ffffffff806dc158>] smp_init+0xbc/0xe8 [<ffffffff806d4c18>] kernel_init_freeable+0xa0/0x228 [<ffffffff8056c908>] kernel_init+0x10/0xf0 [<ffffffff80105098>] ret_from_kernel_thread+0x14/0x1c Fix this by allowing the GIC IPI IRQ domain to match purely based upon the bus token if the node provided is NULL. Fixes: 2af70a9620 ("irqchip/mips-gic: Add a IPI hierarchy domain") Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Jason Cooper <jason@lakedaemon.net> Cc: Qais Yousef <qsyousef@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20160705132600.27730-2-paul.burton@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2016-07-05 16:54:21 +02:00
..
alphascale_asm9260-icoll.h
exynos-combiner.c
irq-alpine-msi.c	irqchip/irq-alpine-msi: Don't use <asm-generic/msi.h>	2016-05-11 10:12:25 +01:00
irq-armada-370-xp.c	irqchip/armada-370-xp: Allow allocation of multiple MSIs	2016-02-16 17:36:16 +00:00
irq-ath79-cpu.c	irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/	2016-02-17 13:47:19 +00:00
irq-ath79-misc.c	irqchip/ath79-misc: Move the MISC driver from arch/mips/ath79/	2016-02-17 13:44:31 +00:00
irq-atmel-aic-common.c
irq-atmel-aic-common.h
irq-atmel-aic.c
irq-atmel-aic5.c	irqchip/atmel-aic: Remove duplicate bit operation	2016-02-08 15:03:42 +01:00
irq-bcm2835.c
irq-bcm2836.c	irqchip/bcm2836: Use a more generic memory barrier call	2016-05-11 10:13:00 +01:00
irq-bcm6345-l1.c	irqchips/bmips: Add bcm6345-l1 interrupt controller	2016-02-08 15:03:42 +01:00
irq-bcm7038-l1.c
irq-bcm7120-l2.c
irq-brcmstb-l2.c
irq-clps711x.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
irq-crossbar.c	irqchip: Mask the non-type/sense bits when translating an IRQ	2016-05-11 10:12:41 +01:00
irq-digicolor.c
irq-dw-apb-ictl.c
irq-eznps.c	irqchip: add nps Internal and external irqchips	2016-05-09 09:32:31 +05:30
irq-gic-common.c	Small release overall.	2016-05-19 11:27:09 -07:00
irq-gic-common.h	irqchip/gic-v2: Parse and export virtual GIC information	2016-05-03 12:54:21 +02:00
irq-gic-realview.c	irqchip/gic/realview: Support more RealView DCC variants	2016-03-09 09:38:05 +00:00
irq-gic-v2m.c	irqchip/gic-v2m: Add workaround for Broadcom NS2 GICv2m erratum	2016-05-11 10:12:40 +01:00
irq-gic-v3-its-pci-msi.c
irq-gic-v3-its-platform-msi.c
irq-gic-v3-its.c	irqchip/gicv3-its: numa: Enable workaround for Cavium thunderx erratum 23144	2016-06-02 18:01:07 +01:00
irq-gic-v3.c	irqchip/gic-v3: Fix quiescence check in gic_enable_redist	2016-06-02 18:00:06 +01:00
irq-gic.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
irq-hip04.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
irq-i8259.c
irq-imgpdc.c
irq-imx-gpcv2.c
irq-ingenic.c
irq-keystone.c
irq-lpc32xx.c	irqchip: Add LPC32xx interrupt controller driver	2016-05-11 10:12:11 +01:00
irq-ls-scfg-msi.c	irqchip: Add Layerscape SCFG MSI controller support	2016-05-04 09:58:04 +01:00
irq-mbigen.c	irqchip/mbigen: Checking for IS_ERR() instead of NULL	2016-05-11 10:12:13 +01:00
irq-metag-ext.c
irq-metag.c
irq-mips-cpu.c
irq-mips-gic.c	irqchip/mips-gic: Match IPI IRQ domain by bus token only	2016-07-05 16:54:21 +02:00
irq-mmp.c
irq-moxart.c
irq-mtk-sysirq.c
irq-mvebu-odmi.c	irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity method	2016-02-19 15:42:29 +00:00
irq-mxs.c	irqchip/mxs: Fix error check of of_io_request_and_map()	2016-03-10 16:03:30 +01:00
irq-nvic.c
irq-omap-intc.c
irq-or1k-pic.c
irq-orion.c
irq-partition-percpu.c	irqchip: Add per-cpu interrupt partitioning library	2016-05-02 13:42:51 +02:00
irq-pic32-evic.c	irqchip/irq-pic32-evic: Fix bug with external interrupts.	2016-06-02 18:03:50 +01:00
irq-renesas-h8s.c
irq-renesas-h8300h.c
irq-renesas-intc-irqpin.c
irq-renesas-irqc.c
irq-s3c24xx.c
irq-sa11x0.c
irq-sirfsoc.c
irq-st.c
irq-sun4i.c
irq-sunxi-nmi.c	irqchip/sunxi-nmi: Fix error check of of_io_request_and_map()	2016-03-10 16:03:30 +01:00
irq-tango.c	irqchip/tango: Add support for Sigma Designs SMP86xx/SMP87xx interrupt controller	2016-02-18 01:18:14 +00:00
irq-tb10x.c
irq-tegra.c	irqchip: Mask the non-type/sense bits when translating an IRQ	2016-05-11 10:12:41 +01:00
irq-ts4800.c	irqchip/ts4800: Make ts4800_ic_ops static const	2016-02-18 02:09:18 +00:00
irq-versatile-fpga.c	irqchip: versatile-fpga: add new compatible for OX810SE SoC	2016-04-26 09:50:51 +02:00
irq-vf610-mscm-ir.c
irq-vic.c
irq-vt8500.c
irq-xtensa-mx.c
irq-xtensa-pic.c
irq-zevio.c
irqchip.c
Kconfig	irqchip: nps: add 64BIT dependency	2016-05-20 10:20:47 -07:00
Makefile	ARC updates for 4.7-rc1	2016-05-19 09:46:18 -07:00
spear-shirq.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00