Date: Thu, 22 May 2003 13:51:46 +0400 From: Alexey Neyman <alex.neyman@auriga.ru> To: Tim Robbins <tjr@FreeBSD.ORG>, current@freebsd.org Subject: Re: VM-related lock order reversal Message-ID: <200305221351.46828.alex.neyman@auriga.ru> In-Reply-To: <20030522181133.A32602@dilbert.robbins.dropbear.id.au> References: <20030522181133.A32602@dilbert.robbins.dropbear.id.au>
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hi, there! On Thursday 22 May 2003 12:11, Tim Robbins wrote: TR> vm_map.c:2148 is in vm_map_delete(): TR> vm_kern.c:325 is in kmem_malloc(): Got similar one, with the kernel about 1 week old (14 May 2003): (kernel is customized, config available upon request) lock order reversal 1st 0xc355dab0 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(c03a02c9,c082f110,c03add39,c03add39,c03adbd4) at backtrace+0x17 witness_lock(c082f110,8,c03adbd4,145,c023f66b) at witness_lock+0x6b7 _mtx_lock_flags(c082f110,0,c03adbd4,145,c3558000) at _mtx_lock_flags+0xbe _vm_map_lock(c082f0b0,c03adbd4,145,c021156d,246) at _vm_map_lock+0x36 kmem_malloc(c082f0b0,1000,101,d79e8b20,c031ee55) at kmem_malloc+0x65 page_alloc(c083a240,1000,d79e8b13,101,60c) at page_alloc+0x27 slab_zalloc(c083a240,101,c03af59d,66f,c083a924) at slab_zalloc+0x155 uma_zone_slab(c083a240,101,c03af59d,66f,0) at uma_zone_slab+0xd8 uma_zalloc_internal(c083a240,0,101,6ef,0) at uma_zalloc_internal+0x55 uma_zfree_arg(c083a900,c37e7000,0,c355dab0,d79e8bcc) at uma_zfree_arg+0x2c7 dev_pager_putfake(c37e7000,0,c03ad407,bc,c355dab0) at dev_pager_putfake+0x3d dev_pager_dealloc(c355dab0,1,c03af4a0,10b,0) at dev_pager_dealloc+0xc8 vm_pager_deallocate(c355dab0,0,c03ae676,25e,c0421508) at vm_pager_deallocate+0x3d vm_object_terminate(c355dab0,0,c03ae676,200,c370a8ac) at vm_object_terminate+0x1f4 vm_object_deallocate(c355dab0,c370a8ac,c355dab0,c370a8ac,d79e8c9c) at vm_object_deallocate+0x217 vm_map_entry_delete(c3703b00,c370a8ac,c03adda7,86e,c039bb28) at vm_map_entry_delete+0x3b vm_map_delete(c3703b00,282e1000,282e2000,1000,282e1000) at vm_map_delete+0x453 vm_map_remove(c3703b00,282e1000,282e2000,0,c372f7e8) at vm_map_remove+0x55 munmap(c3558000,d79e8d10,c03b3885,3fb,2) at munmap+0x9e syscall(2f,2f,2f,f8000,1000) at syscall+0x26e Xint0x80_syscall() at Xint0x80_syscall+0x1d --- syscall (73), eip = 0x28252163, esp = 0xbfbffa6c, ebp = 0xbfbffa98 --- Regards, Alexey. -- A quoi ca sert d'etre sur la terre Si c'est pour faire nos vies a genoux?
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