port-sparc64/39868: kernel trap 34: mem address not aligned

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

>Number:         39868
>Category:       port-sparc64
>Synopsis:       kernel trap 34: mem address not aligned
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Nov 05 20:25:01 +0000 2008
>Originator:     Manuel Bouyer
>Release:        NetBSD 5.0_BETA
>Organization:
>Environment:
System: NetBSD 5.0_BETA (GENERIC_SUN4U) #0: Mon Nov  3 14:30:45 CET 2008
      
bouyer@roll:/dsk/l1/misc/bouyer/tmp/sparc/obj/dsk/l1/misc/bouyer/netbsd-5/src/sys/arch/sparc/compile/GENERIC_SUN4U
Architecture: sparc
Machine: sparc
>Description:
        On these sun4u systems I get this repeatable panic, with variants:
kernel trap 34: mem address not aligned
Stopped in pid 0.26 (system) at netbsd:uvmpdpol_selectvictim+0x84:      ld    [
%l0 + 0x4], %g1
db> tr
uvm_pageout(1, 1892ee0, 1892ee0, 1893000, 1892ee0, 0) at 
netbsd:uvm_pageout+0x1b0
lwp_trampoline(f0075db8, fffa3cf8, 111800, 1106c8, fffa3df8, 1) at 
netbsd:lwp_trampoline+0x8


kernel trap 34: mem address not aligned
Stopped in pid 21209.1 (make) at        netbsd:mutex_exit+0xc:  casa          0
x80, %o1, %o2
db> tr
amap_wipeout(16e12350, 0, 100, 0, cbd6be0, 15b9b880) at 
netbsd:amap_wipeout+0x128
uvm_unmap_detach(15a2e5b8, 0, 1e000, 161b3c5c, 0, 0) at 
netbsd:uvm_unmap_detach+0x34
uvmspace_free(15b9b880, 15b85058, ffffffff, ffffffff, 0, 0) at 
netbsd:uvmspace_free+0xe0
exit1(15b80080, 0, 0, ffffc484, 40056a00, f0000000) at netbsd:exit1+0x18c
sys_exit(15b80080, 161b3dd0, 161b3e10, 1, 0, ffffc560) at netbsd:sys_exit+0x38
syscall_plain(161b3ed0, 1, 401a10f4, 161b3dd0, 400, 401a10f8) at 
netbsd:syscall_plain+0x14c
?(0, 0, 800, 401d40f0, 401d3ec0, 800) at 0x1008c74


>How-To-Repeat:
        build pkgsrc on a 32bit sun4u ?
>Fix:
        unknown