Re: vm/map LOR

 fakepg_zone should probably be UMA_ZONE_VM.  Or the vm_object lock
 needs to be dropped before allocating or freeing to that zone.

 What does Alan think? (cc'd)

 -Bosko

On Thu, Jul 31, 2003 at 04:46:06PM -0700, Lars Eggert wrote:
> Hi,
> 
> with yesterday's -current:
> 
>  1st 0xc6dfd094 vm object (vm object) _at_ /usr/src/sys/vm/vm_object.c:434
>  2nd 0xc082f110 system map (system map) _at_ /usr/src/sys/vm/vm_kern.c:323
> 
> Stack backtrace:
> backtrace(c032000b,c082f110,c033362f,c033362f,c03334c6) at backtrace+0x17
> witness_lock(c082f110,8,c03334c6,143,c082f0b0) at witness_lock+0x686
> _mtx_lock_flags(c082f110,0,c03334c6,143,101) at _mtx_lock_flags+0xb5
> _vm_map_lock(c082f0b0,c03334c6,143,c0374778,c03747a0) at _vm_map_lock+0x36
> kmem_malloc(c082f0b0,1000,101,eb44db14,c02b0433) at kmem_malloc+0x3a
> page_alloc(c083a240,1000,eb44db07,101,0) at page_alloc+0x27
> slab_zalloc(c083a240,101,c083a254,8,c0334e1e) at slab_zalloc+0xc2
> uma_zone_slab(c083a240,101,c0334e1e,663,165) at uma_zone_slab+0xd9
> uma_zalloc_internal(c083a240,0,101,6e7,0) at uma_zalloc_internal+0x4f
> uma_zfree_arg(c083a900,c6e31000,0,eb44dbc4,c029884d) at uma_zfree_arg+0x2a6
> dev_pager_putfake(c6e31000,0,c0332b9e,be,c6dfd094) at dev_pager_putfake+0x35
> dev_pager_dealloc(c6dfd094,1,c0334dcf,10c,0) at dev_pager_dealloc+0xb9
> vm_pager_deallocate(c6dfd094,0,c0333f6c,261,1b2) at vm_pager_deallocate+0x3d
> vm_object_terminate(c6dfd094,0,c0333f6c,1b2,c6b894ec) at 
> vm_object_terminate+0x1e5
> vm_object_deallocate(c6dfd094,c082bd20,c6dfd094,c082bd20,eb44dca0) at 
> vm_object_deallocate+0x35e
> vm_map_entry_delete(c6593e00,c082bd20,c033369d,897,c019f843) at 
> vm_map_entry_delete+0x3c
> vm_map_delete(c6593e00,282e2000,282e3000,1000,282e2000) at 
> vm_map_delete+0x3c3
> vm_map_remove(c6593e00,282e2000,282e3000,0,c6b8a618) at vm_map_remove+0x55
> munmap(c6ae24c0,eb44dd14,c0339293,3ee,2) at munmap+0x9e
> syscall(2f,2f,2f,f8000,1000) at syscall+0x260
> Xint0x80_syscall() at Xint0x80_syscall+0x1d
> --- syscall (73), eip = 0x28257aa7, esp = 0xbfbffc1c, ebp = 0xbfbffc48 ---
> 
> Lars
> -- 
> Lars Eggert <larse_at_isi.edu>           USC Information Sciences Institute



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