I get a kernel panic at early boot time on 9.0-stable (r237150), GENERIC, AMD64. Repro step: 1. Boot, wait for welcome screen. 2. Repeat pressing Enter key rapidly (so kernel is loading, don't stop pressing Enter key). 3. See the following message at early boot * * *ACPI APIC Table: <ALASKA A M I>* *panic: AP #1 (PHY# 2) failed!* *cpuid = 0* *KDB: stack backtrace: **(address is remove below in backtrace)* *#0 kdb_backtrace* *#1 panic* *#2 cpu_mp_start* *#3 mp_start* *#4 mi_startup* *#5 btext* * * I can repro about 5 out of 10 times. * * I attached dmesg log captured during normal boot. The box has a MSI H67MA-E35 motherboard, Intel H67 chipset. The usb keyboard is connected to a hub then to the machine. Thanks. -------------- next part -------------- A non-text attachment was scrubbed... Name: dmesg.log Type: application/octet-stream Size: 28553 bytes Desc: not available Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20120617/311f364b/dmesg.obj
On Sunday, June 17, 2012 2:35:14 pm mnln.l4 wrote:> I get a kernel panic at early boot time on 9.0-stable (r237150), GENERIC, > AMD64. > > Repro step: > 1. Boot, wait for welcome screen. > 2. Repeat pressing Enter key rapidly (so kernel is loading, don't stop > pressing Enter key). > 3. See the following message at early bootSo don't do that. All your key presses are triggering SMI# events that are interfering with the AP's ability to respond to its startup IPI. There is nothing we can do about this in the OS. -- John Baldwin