In debugging a new SCSI driver for 4.7-RELEASE on a SMP machine, there is a panic I'm trying to understand. I found a comment in sys/i386/include/globaldata.h that says
* SMP_PRIVPAGES: The per-cpu address space is 0xff80000 -> 0xffbfffff The panic I see on the console prints Fatal double fault: eip = 0xc037383c esp = 0xff78fd44 ebp = 0xff80fd70 mp_lock = 01000001; cpuid = 1; lapic.id = 00000000 ... Assuming the first value in the comment is missing a trailing zero, does the value of esp above indicate that CPU #1's stack overflowed? Is this an interrupt (exception?) stack? If so, where does it start and how big is it? Tnx! The particulars: - machine is a SuperMicro with 2 Pentium 4's and hyper-threading enabled - code is 4.7-RELEASE - configuration diffs vs GENERIC ! #cpu I386_CPU ! #cpu I486_CPU ! #cpu I586_CPU cpu I686_CPU ! ident SMP ! makeoptions DEBUG=-g ! options DDB ! options GDB_REMOTE_CHAT ! options BREAK_TO_DEBUGGER ! options CONSPEED=115200 ! options INVARIANTS ! options INVARIANT_SUPPORT ! options SMP # Symmetric MultiProcessor Kernel ! options APIC_IO # Symmetric (APIC) I/O ! device sio0 at isa? port IO_COM1 flags 0x90 irq 4 -- Chuck Tuffli <chuck_tuffli AT NO_SPAM agilent DOT com> Agilent Technologies, Storage and Networking To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
