From: Don Bowman [mailto:don_at_sandvine.com] > So my machine which has been locking up daily under current > (cvs up from saturday) this time showed this message to > serial before locking up: And I got another, but this one it recovered from after a ~20s hang. machine has 4GB ram, adaptec ASR raid, 2 2.8GHz xeon with symmetric multi threading yielding 4 processor contexts. The only process it runs (other than system related stuff) is postgresql. lock order reversal 1st 0xc8eed4a4 vm object (vm object) _at_ /usr/src/sys/vm/swap_pager.c:1313 2nd 0xc07738c0 swap_pager swhash (swap_pager swhash) _at_ /usr/src/sys/vm/swap_pager.c:1803 3rd 0xc8beb294 vm object (vm object) _at_ /usr/src/sys/vm/uma_core.c:886 Stack backtrace: backtrace(0,1,c07422e8,c0743490,c06feafc) at backtrace+0x12 witness_checkorder(c8beb294,9,c06d7841,376) at witness_checkorder+0x593 _mtx_lock_flags(c8beb294,0,c06d7841,376,c8bcb8d4) at _mtx_lock_flags+0x67 obj_alloc(c8bcb8c0,1000,ebefda3b,101,c8bcb8d4) at obj_alloc+0x31 slab_zalloc(c8bcb8c0,1,c8bcb8c0,c8bcb8d4,1) at slab_zalloc+0x82 uma_zone_slab(c8bcb8c0,1,c8bcb8d4,0,c06d7841,68f) at uma_zone_slab+0xb5 uma_zalloc_internal(c8bcb8c0,0,1,c8bcb8d4,0) at uma_zalloc_internal+0x28 uma_zalloc_arg(c8bcb8c0,0,1) at uma_zalloc_arg+0x2f8 swp_pager_meta_build(c8eed4a4,9,0,2,0) at swp_pager_meta_build+0x108 swap_pager_putpages(c8eed4a4,ebefdc00,1,0,ebefdb70) at swap_pager_putpages+0x2b4 default_pager_putpages(c8eed4a4,ebefdc00,1,0,ebefdb70) at default_pager_putpages+0x18 vm_pageout_flush(ebefdc00,1,0,c06dcb0c,ca) at vm_pageout_flush+0x11e vm_pageout_clean(c467c478) at vm_pageout_clean+0x2a5 vm_pageout_scan(0) at vm_pageout_scan+0x54b vm_pageout(0,ebefdd48,0,c0644404,0) at vm_pageout+0x2d2 fork_exit(c0644404,0,ebefdd48) at fork_exit+0xa8 fork_trampoline() at fork_trampoline+0x8 --- trap 0x1, eip = 0, esp = 0xebefdd7c, ebp = 0 ---Received on Wed Mar 24 2004 - 07:04:06 UTC
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