On 04/02/2016, 12:35 PM, Dmitry Vyukov wrote: > Hello, > > After updating from 8e0f93cda48ed054e1216bab5c60017e1a5fc1e8 to > 05cf8077e54b20dddb756eaa26f3aeb5c38dd3cf (Apr 1) I've started seeing > the following warnings: > > genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 > (goldfish_pdev_bus) > CPU: 3 PID: 6626 Comm: init Tainted: G W 4.6.0-rc1+ #338 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 > ffffffff87eb26a0 ffff88003da17618 ffffffff82c8ea9f ffffffff86f0c740 > fffffbfff0fd64d4 ffff88003e8a6aa8 ffff88005eb4c4c8 00000000fffffff0 > ffffffff874f6be0 ffff880034ae63a8 ffff88003da17708 ffffffff8149e73c > Call Trace: > [< inline >] __dump_stack lib/dump_stack.c:15 > [<ffffffff82c8ea9f>] dump_stack+0x12e/0x18f lib/dump_stack.c:51 > [<ffffffff8149e73c>] __setup_irq+0x11fc/0x1610 kernel/irq/manage.c:1369 > [<ffffffff8149ef55>] request_threaded_irq+0x275/0x410 > kernel/irq/manage.c:1652 > [< inline >] request_irq include/linux/interrupt.h:147 ... > They appear after boot every 10 seconds. > I am using qemu. Here are GOLDFISH related .config values: > > CONFIG_GOLDFISH=y > # CONFIG_X86_GOLDFISH is not set > CONFIG_KEYBOARD_GOLDFISH_EVENTS=y > CONFIG_GOLDFISH_TTY=y > CONFIG_BATTERY_GOLDFISH=y > CONFIG_FB_GOLDFISH=y > CONFIG_MMC_GOLDFISH=y > CONFIG_GOLDFISH_AUDIO=y > CONFIG_MTD_GOLDFISH_NAND=y > CONFIG_GOLDFISH_BUS=y > CONFIG_GOLDFISH_PIPE=y > > Is it a known issue? How can it be fixed?
This is a conflict between request_irq of goldfish and 8250. Setting SERIAL_8250_SHARE_IRQ (which is the default) should make the trace gone. Note that GOLDFISH=y makes sense only if you build a goldfish kernel. I.e. setting both 8250 and goldfish does not make much sense IIRC. thanks, -- js suse labs _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
