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Description
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A change in snv_87 has exposed a latent bug in the xpv_psm module. This manifests itself as a panic when starting mp PV guests. The following stacktrace is what you will see if you are experiencing this problem.
panic[cpu1]/thread=ffffff0007c39c80: BAD TRAP: type=e (#pf Page fault) rp=ffffff0007c39b10 addr=fff
ffffffb4b23e8
#pf Page fault
Bad kernel fault at addr=0xfffffffffb4b23e8
pid=0, pc=0xfffffffffb886db0, sp=0xffffff0007c39c08, eflags=0x10016
cr0: 8005003b<pg,wp,ne,et,ts,mp,pe> cr4: 660<xmme,fxsr,mce,pae>
cr2: fffffffffb4b23e8
rdi: fffffffffb4b23e8 rsi: 100000000 rdx: 0
rcx: 20 r8: fffffffffb4b23e8 r9: 0
rax: ffef04e7 rbx: 0 rbp: ffffff0007c39c30
r10: 0 r11: 0 r12: ffffff01cdb71080
r13: 1 r14: 0 r15: 0
fsb: 0 gsb: ffffff01cdb71080 ds: e02b
es: e02b fs: 0 gs: 0
trp: e err: 2 rip: fffffffffb886db0
cs: e030 rfl: 10016 rsp: ffffff0007c39c08
ss: e02b
ffffff0007c399f0 unix:die+ea ()
ffffff0007c39b00 unix:trap+13cf ()
ffffff0007c39b10 unix:cmntrap+12f ()
ffffff0007c39c30 unix:atomic_or_64+0 ()
ffffff0007c39c40 xpv_psm:xen_psm_post_cpu_start+34 ()
ffffff0007c39c70 unix:mp_startup+49 ()
I can confirm that the domU with 4 vcpus is working fine in snv_89.
oaf210# cat /etc/release
Solaris Express Community Edition snv_89 X86
Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 06 May 2008
oaf210# xm list
Name ID Mem VCPUs State Time(s)
Domain-0 0 3904 8 r----- 95.6
oaf210-domu-1 1 4096 4 r----- 614.5
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