ru.unix.bsd

 
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 From : Eugene Grosbein                      2:5006/1       10 Aug 2005  13:06:49
 To : All
 Subject : LOR
 -------------------------------------------------------------------------------- 
 

 Привет!
 
 Hа 6.0-BETA2, стоящей абсолютно без нагрузки, случился lock order reversal:
 
 ws092# lock order reversal
  1st 0xc097bf60 UMA lock (UMA lock) @ /usr/src/sys/vm/uma_core.c:1494
  2nd 0xc1060144 system map (system map) @ /usr/src/sys/vm/vm_map.c:2317
 KDB: stack backtrace:
 kdb_backtrace(0,ffffffff,c0931078,c09311b8,c08bb864) at kdb_backtrace+0x29
 witness_checkorder(c1060144,9,c0871ed0,90d) at witness_checkorder+0x564
 _mtx_lock_flags(c1060144,0,c0871ed0,90d) at _mtx_lock_flags+0x5b
 _vm_map_lock(c10600c0,c0871ed0,90d) at _vm_map_lock+0x26
 vm_map_remove(c10600c0,c130a000,c130b000,c5f93c08,c077f81d) at
 vm_map_remove+0x1
 f
 kmem_free(c10600c0,c130a000,1000,c5f93c38,c077f1ca) at kmem_free+0x25
 page_free(c130a000,1000,2) at page_free+0x29
 zone_drain(c104a960) at zone_drain+0x26a
 zone_foreach(c077ef60,c5f93cec,c079104b,c1219c00,c5f93c74) at zone_foreach+0x37
 uma_reclaim(c1219c00,c5f93c74,0,c09276a0,c5f93c80) at uma_reclaim+0x12
 vm_pageout_scan(0,c097c3c0,0,c08733bd,5c3) at vm_pageout_scan+0x103
 vm_pageout(0,c5f93d38,0,c0791e04,0) at vm_pageout+0x2c3
 fork_exit(c0791e04,0,c5f93d38) at fork_exit+0xa0
 fork_trampoline() at fork_trampoline+0x8
 - --- trap 0x1, eip = 0, esp = 0xc5f93d6c, ebp = 0 ---
  
 You have new mail.
 ws092#
 
 Hапомните, плиз, URL, где можно перечислены уже известные/неважные LOR. 
 
 Eugene
 -- 
 Hаучить презирать мещанскую мудрость.
 --- slrn/0.9.8.0 (FreeBSD)
  * Origin: Svyaz Service JSC (2:5006/1@fidonet)
 
 

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Тема:    Автор:    Дата:    LOR   Eugene Grosbein   10 Aug 2005 13:06:49   LOR   Vladimir Kurtukov   10 Aug 2005 12:20:06