Messages in this thread |  | | Date | Thu, 23 Nov 2017 07:36:23 +0800 | From | Fengguang Wu <> | Subject | Re: [serial8250_interrupt] RIP: 0010:arch_local_irq_restore+0x2/0x8 |
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On Tue, Nov 21, 2017 at 04:39:14PM +0200, Andy Shevchenko wrote: >On Tue, 2017-11-21 at 21:31 +0800, Fengguang Wu wrote: >> On Tue, Nov 21, 2017 at 08:33:57PM +0800, Fengguang Wu wrote: >> > Hello, >> > >> > FYI this happens in mainline kernel 4.14.0-02748-gabc36be. >> > It shows up since v4.13 . >> >> Sorry it actually also shows up in 4.10: > >This one means that interrupt storm is occurred. Last time I saw that >was by the fact of some specific IOAPIC configuration when DMA for UART >was enabled. > >I'm pretty sure that is not the case here. Though, it would be nice to >see link to the following files:
It's basically a KVM machine. This is adapted from the reproduce script attached in the first email:
kvm=( qemu-system-x86_64 -enable-kvm -cpu IvyBridge -kernel $kernel -initrd initrd.img -m 1536 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::23406-:22 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -drive file=disk-vm-ivb41-1G-7-0,media=disk,if=virtio -drive file=disk-vm-ivb41-1G-7-1,media=disk,if=virtio -drive file=disk-vm-ivb41-1G-7-2,media=disk,if=virtio -drive file=disk-vm-ivb41-1G-7-3,media=disk,if=virtio -drive file=disk-vm-ivb41-1G-7-4,media=disk,if=virtio -drive file=disk-vm-ivb41-1G-7-5,media=disk,if=virtio -serial stdio -display none -monitor null )
append=( ip=::::vm-ivb41-1G-7::dhcp root=/dev/ram0 user=lkp job=/job-script ARCH=x86_64 kconfig=x86_64-allyesdebian branch=linus/master commit=abc36be236358162202e86ad88616ff95a755101 BOOT_IMAGE=/pkg/linux/x86_64-allyesdebian/gcc-6/abc36be236358162202e86ad88616ff95a755101/vmlinuz-4.14.0-02748-gabc36be max_uptime=600 RESULT_ROOT=/result/boot/1/vm-ivb41-1G/debian-x86_64-2016-08-31.cgz/x86_64-allyesdebian/gcc-6/abc36be236358162202e86ad88616ff95a755101/0 result_service=tmpfs debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw )
Thanks, Fengguang
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