On Fri, Feb 13, 2009 at 12:02:10PM -0500, Andrew Gallatin wrote: > I was trying to run a simple dtrace profiling script, and > panic'ed the machine using today's -current on an 8-way opteron. > > I tried to run: > #!/usr/sbin/dtrace -s > > profile:::profile-997 > { > _at_a[stack(20)]=count(); > } > > END > { > trunc(_at_a, 20); > printa(_at_a); > } > > Everything was fine until I hit ^C. This appeared > on the tty (which I expected): > > dtrace: script '/nfs/home/gallatin/dtrace/profile_stack.d' matched 2 probes > ^C > CPU ID FUNCTION:NAME > 1 2 :END > > kernel`vm_page_splay+0x5b > kernel`trap+0x482 > kernel`0xffffffff807eb8f3 > 1 > > kernel`vm_fault+0x1e2 > 1 > > kernel`pagezero+0x17 > 1 > > kernel`cpu_idle+0x1 > 1 > > kernel`pmap_enter+0x6f > kernel`0xffffffff807eb8f3 > 1 > > 4 > > kernel`pagezero+0x11 > 4 > > kernel`acpi_cpu_c1+0x6 > kernel`0xffffffff807ebd4e > 14063 > > And then the machine fell over with this on console: > > kernel trap 12 with interrupts disabled > > > Fatal trap 12: page fault while in kernel mode > cpuid = 7; apic id = 07 > fault virtual address = 0x20 > fault code = supervisor read data, page not present > instruction pointer = 0x8:0xffffffff80e33187 > stack pointer = 0x10:0xfffffffe4004aa70 > frame pointer = 0x10:0xfffffffe4004aa80 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = resume, IOPL = 0 > current process = 11 (idle: cpu7) > trap number = 12 > panic: page fault > cpuid = 7 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > panic() at panic+0x182 > trap_fatal() at trap_fatal+0x2ad > trap_pfault() at trap_pfault+0x294 > trap() at trap+0x38b > calltrap() at calltrap+0x8 > --- trap 0xc, rip = 0xffffffff80e33187, rsp = 0xfffffffe4004aa70, rbp = > 0xfffffffe4004aa80 --- > cyclic_disable_xcall() at cyclic_disable_xcall+0x7 > smp_rendezvous_action() at smp_rendezvous_action+0xb3 > Xrendezvous() at Xrendezvous+0x64 > --- interrupt, rip = 0xffffffff807e3cf6, rsp = 0xfffffffe4004ab70, rbp = > 0xfffffffe4004ab80 --- > acpi_cpu_c1() at acpi_cpu_c1+0x6 > acpi_cpu_idle() at acpi_cpu_idle+0x19c > sched_idletd() at sched_idletd+0x234 > fork_exit() at fork_exit+0x118 > fork_trampoline() at fork_trampoline+0xe > --- trap 0, rip = 0, rsp = 0xfffffffe4004ad40, rbp = 0 --- > Uptime: 5m14s > Physical memory: 8177 MB > Dumping 506 MB: 491 475 459 443 427 411 395 379 363 347 331 315 299 283 > 267 251 235 219 203 187 171 155 139 123 107 91 75 59 43 27 11 > > hi, I have the same problem and found the hack "solution": dchagin# sysctl machdep.idle=hlt machdep.idle: acpi -> hlt thnx! -- Have fun! chdReceived on Sun Feb 15 2009 - 14:38:33 UTC
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