> Thanks for the quick reply. You're probably correct about > a hardware issue. This system is getting long in the tooth. > Panic occurs if I run a few very intensive floating point > computations. Console logs do not show anything unusual. > I need to go investigate how to up BMC.
Check for CPU overheating, as systems age the thermal compound between the CPU and heatsink often becomes dryed and ineffective. > -- > steve > > > On Fri, Jun 27, 2025 at 04:52:53PM -0400, Alexander Motin wrote: > > Hi. > > > > It is likely a hardware failure, unless a false positive. Check last > > console logs or better BMC logs for detail. > > > > On Fri, Jun 27, 2025, 16:26 Steve Kargl <[email protected]> > > wrote: > > > > > Never seen this type of panic. I can upload > > > core.txt.4 and info.4 to freefall if someone > > > wants more details. > > > > > > > > > __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > > > 57 __asm("movq %%gs:%c1,%0" : "=r" (td) > > > (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > > > td = <optimized out> > > > #1 doadump (textdump=textdump@entry=1) > > > at /usr/src/sys/kern/kern_shutdown.c:399 > > > error = 0 > > > coredump = <optimized out> > > > #2 0xffffffff80676e30 in kern_reboot (howto=260) > > > at /usr/src/sys/kern/kern_shutdown.c:519 > > > once = 0 > > > __pc = 0x0 > > > #3 0xffffffff80677367 in vpanic ( > > > fmt=0xffffffff80abdb94 "Unrecoverable machine check exception", > > > ap=ap@entry=0xfffffe001c024ed0) at > > > /usr/src/sys/kern/kern_shutdown.c:974 > > > buf = "Unrecoverable machine check exception", '\000' <repeats 218 > > > times> > > > __pc = 0x0 > > > __pc = 0x0 > > > __pc = 0x0 > > > other_cpus = {__bits = {251, 0 <repeats 15 times>}} > > > td = 0xfffff80004601000 > > > bootopt = <unavailable> > > > newpanic = <optimized out> > > > #4 0xffffffff80677193 in panic (fmt=<unavailable>) > > > at /usr/src/sys/kern/kern_shutdown.c:887 > > > ap = {{gp_offset = 8, fp_offset = 48, > > > overflow_arg_area = 0xfffffe001c024f00, > > > reg_save_area = 0xfffffe001c024ea0}} > > > #5 0xffffffff809d391b in mca_intr () at /usr/src/sys/x86/x86/mca.c:1540 > > > recoverable = false > > > mcg_status = <optimized out> > > > count = <optimized out> > > > lmcs = <optimized out> > > > #6 <signal handler called> > > > No locals. > > > #7 mi_switch (flags=flags@entry=262) at > > > /usr/src/sys/kern/kern_synch.c:537 > > > __pc = 0x0 > > > __pc = 0x0 > > > __pc = 0x0 > > > __pc = 0x0 > > > __pc = 0x0 > > > td = 0xfffff80004601000 > > > new_switchtime = <optimized out> > > > runtime = <optimized out> > > > #8 0xffffffff806aaca4 in sched_idletd (dummy=dummy@entry=0x0) > > > at /usr/src/sys/kern/sched_4bsd.c:1688 > > > __pc = 0x0 > > > stat = <optimized out> > > > #9 0xffffffff806324b2 in fork_exit ( > > > callout=0xffffffff806aac50 <sched_idletd>, arg=0x0, > > > frame=0xfffffe00d5407f40) at /usr/src/sys/kern/kern_fork.c:1153 > > > __pc = 0x0 > > > __pc = 0x0 > > > td = 0xfffff80004601000 > > > p = 0xfffffe00c3002040 > > > dtd = <optimized out> > > > #10 <signal handler called> > > > > > > > > > > > > > > > > > > > > > -- > > > Steve > > > > > > -- > > Alexander Motin > > -- > Steve > > -- Rod Grimes [email protected]
