Date: Wed, 28 May 2003 00:21:21 +0200 From: Dennis Kristensen <snicki@cs.auc.dk> To: freebsd-current@freebsd.org Subject: LOR in vm_object/vm_kern Message-ID: <1054074081.3ed3e4e13d8d3@mail.snicki.dk>
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Hi! I just got the below LOR on: FreeBSD lap.snicki.dk 5.1-BETA FreeBSD 5.1-BETA #49: Tue May 27 22:28:31 CEST 2003 root@lap.snicki.dk:/usr/obj/usr/src/sys/LAP i386 sources from about half an hour before the kernel build. lock order reversal 1st 0xc5fd3378 vm object (vm object) @ /usr/src/sys/vm/vm_object.c:512 2nd 0xc082f110 system map (system map) @ /usr/src/sys/vm/vm_kern.c:325 Stack backtrace: backtrace(c03a3dff,c082f110,c03b06e3,c03b06e3,c03b057e) at backtrace+0x17 witness_lock(c082f110,8,c03b057e,145,e4351a90) at witness_lock+0x697 _mtx_lock_flags(c082f110,0,c03b057e,145,c5d795f0) at _mtx_lock_flags+0xb1 _vm_map_lock(c082f0b0,c03b057e,145,c02457e4,3246) at _vm_map_lock+0x36 kmem_malloc(c082f0b0,1000,101,e4351b24,c032add5) at kmem_malloc+0x65 page_alloc(c083a240,1000,e4351b17,101,c03eb46c) at page_alloc+0x27 slab_zalloc(c083a240,101,c03b1f47,66f,c083a924) at slab_zalloc+0x155 uma_zone_slab(c083a240,101,c03b1f47,66f,0) at uma_zone_slab+0xd8 uma_zalloc_internal(c083a240,0,101,6ef,0) at uma_zalloc_internal+0x55 uma_zfree_arg(c083a900,c6051cf0,0,e4351bcc,c0312b28) at uma_zfree_arg+0x2cc dev_pager_putfake(c6051cf0,0,c03afdab,bc,c5fd3378) at dev_pager_putfake+0x3a dev_pager_dealloc(c5fd3378,1,c03b1e4a,10b,0) at dev_pager_dealloc+0xc8 vm_pager_deallocate(c5fd3378,0,c03b1020,25e,c041f308) at vm_pager_deallocate+0x3 d vm_object_terminate(c5fd3378,0,c03b1020,200,c5f88438) at vm_object_terminate+0x1 f4 vm_object_deallocate(c5fd3378,c5f88438,c5fd3378,c5f88438,e4351c9c) at vm_object_ deallocate+0x20f vm_map_entry_delete(c1b7f100,c5f88438,c03b0751,86e,c039f6ec) at vm_map_entry_del ete+0x3b vm_map_delete(c1b7f100,282e4000,282e6000,2000,282e4000) at vm_map_delete+0x453 vm_map_remove(c1b7f100,282e4000,282e6000,0,c5d7cd88) at vm_map_remove+0x55 munmap(c5d795f0,e4351d10,c03b5c41,3fb,2) at munmap+0x9e syscall(2f,2f,bfbf002f,8225bb0,8820000) at syscall+0x26e Xint0x80_syscall() at Xint0x80_syscall+0x1d --- syscall (73), eip = 0x282524e3, esp = 0xbfbff99c, ebp = 0xbfbff9b8 --- Dennis Kristensen Computer Science student at Aalborg University E-mail: snicki@cs.auc.dk
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