Hi,
while putting a SS20 under pressure to test something else, I got this
panic:
panic: lockmgr: no context
Stopped at      netbsd:cpu_Debugger+0x4:        or              %o7, %g0, %g1
db> tr
cpu_Debugger(0xf02e1bd0, 0xb1912, 0x0, 0x4142296f, 0x100, 0xf031bc00) at netbsd:lockmgr+0x1cc
lockmgr(0xf036b91c, 0x1, 0x0, 0x2f7cf, 0x100, 0xf4812b80) at netbsd:uvmfault_lookup+0x18c
uvmfault_lookup(0xf030f2f0, 0x0, 0xee2639e, 0x65c1, 0xffff, 0xf0373c00) at netbsd:uvm_fault+0x64
uvm_fault(0xf036b918, 0x0, 0x0, 0x1, 0xf0cbe00c, 0x8) at netbsd:mem_access_fault4m+0x354
mem_access_fault4m(0x9, 0x326, 0x0, 0xf030f458, 0x0, 0xc) at 0xf0008518
0xf0008518(0xf49bad50, 0xf4af3f28, 0x3, 0x0, 0xf0cbe028, 0xf036d8bc) at netbsd:setrunnable+0x40
setrunnable(0xf49bad50, 0xf030f5d8, 0x0, 0x100, 0x1, 0x0) at netbsd:kpsignal2+0x374
kpsignal2(0xf4977c90, 0xf030f5d8, 0x1, 0x1, 0x40, 0xe) at netbsd:itimerfire+0x208
itimerfire(0xf4812b80, 0xb1912, 0x0, 0x4142296f, 0xf8f, 0xf036bc00) at netbsd:realtimerexpire+0x4
realtimerexpire(0xf4812b80, 0xa00, 0xf033c3d8, 0x2f7cf, 0x100, 0xf4812b80) at netbsd:softclock+0x240
softclock(0x0, 0x7ffffc00, 0xee2639e, 0x65c1, 0xffff, 0xf03740fc) at netbsd:clockintr_4m+0x1c
clockintr_4m(0x1, 0xf023b854, 0xa00, 0x408000e7, 0xf0cbe00c, 0x0) at netbsd:sparc_interrupt44c+0x118
sparc_interrupt44c(0x1, 0x40, 0xeffff368, 0x0, 0xf4ad9980, 0xf4af3f20) at netbsd:switchexit+0xd8

Does this ring a bell to someone ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--