On Tue, Oct 03, 2017 at 10:06:34PM +0800, Fengguang Wu wrote: > #!/bin/bash > > kernel=$1 > initrd=openwrt-trinity-i386.cgz > > wget --no-clobber > https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd > > kvm=( > qemu-system-x86_64 > -enable-kvm > -cpu Haswell,+smep > -kernel $kernel > -initrd $initrd > -m 256 > -smp 1 > -device e1000,netdev=net0 > -netdev user,id=net0 > -boot order=nc > -no-reboot > -watchdog i6300esb > -watchdog-action debug > -rtc base=localtime > -serial stdio > -display none > -monitor null > ) > > append=( > root=/dev/ram0 > hung_task_panic=1 > debug > apic=debug > sysrq_always_enabled > rcupdate.rcu_cpu_stall_timeout=100 > net.ifnames=0 > printk.devkmsg=on > panic=-1 > softlockup_panic=1 > nmi_watchdog=panic > oops=panic > load_ramdisk=2 > prompt_ramdisk=0 > drbd.minor_count=8 > systemd.log_level=err > ignore_loglevel > console=tty0 > earlyprintk=ttyS0,115200 > console=ttyS0,115200 > vga=normal > rw > drbd.minor_count=8 > ) > > "${kvm[@]}" -append "${append[*]}"
So I was wanting to go chase that one splat you triggered, but the above (after s/Haswell,+smep/host/) boots right up until it wants an init: [ 0.000000] Kernel command line: root=/dev/ram0 hung_task_panic=1 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 drbd.minor_count=8 [ 35.721719] Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance. And it did download that initrd thingy... $ shasum openwrt-trinity-i386.cgz 0a405d02a162defd82a5ffd556fd24e0ee2f994a openwrt-trinity-i386.cgz Anything else I need?
