More lock order reversals...

[Peter Losher]

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Let me know if any more info is needed (this is running 5.2-RELEASE)

Best Wishes - Peter
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lock order reversal
 1st 0x8e6be9cc vm object (vm object) @ /usr/src/sys/vm/swap_pager.c:1323
 2nd 0x8094d060 swap_pager swhash (swap_pager swhash) 
@ /usr/src/sys/vm/swap_pager.c:1838
 3rd 0x8103aa50 vm object (vm object) @ /usr/src/sys/vm/uma_core.c:873
Stack backtrace:
backtrace(8085de18,8103aa50,80871c75,80871c75,80872648) at backtrace+0x17
witness_lock(8103aa50,8,80872648,369,8d7dd8c0) at witness_lock+0x5aa
_mtx_lock_flags(8103aa50,0,80872648,369,8d7dd8d4) at _mtx_lock_flags+0x6a
obj_alloc(8d7dd8c0,1000,f8550a0f,101,0) at obj_alloc+0x3f
slab_zalloc(8d7dd8c0,1,8,80872648,682) at slab_zalloc+0xb3
uma_zone_slab(8d7dd8c0,1,80872648,682,8d7dd970) at uma_zone_slab+0xd6
uma_zalloc_internal(8d7dd8c0,0,1,5b7,80870d8c,72e) at 
uma_zalloc_internal+0x3e
uma_zalloc_arg(8d7dd8c0,0,1,72e,2) at uma_zalloc_arg+0x2b1
swp_pager_meta_build(8e6be9cc,2,0,2,0) at swp_pager_meta_build+0x154
swap_pager_putpages(8e6be9cc,f8550bd0,1,0,f8550b50) at 
swap_pager_putpages+0x30d
default_pager_putpages(8e6be9cc,f8550bd0,1,0,f8550b50) at 
default_pager_putpages+0x2e
vm_pageout_flush(f8550bd0,1,0,f8550ba4,8065f8d1) at vm_pageout_flush+0xe1
vm_pageout_clean(84609720,0,808724ed,32a,0) at vm_pageout_clean+0x2c5
vm_pageout_scan(0,0,808724ed,5a9,1388) at vm_pageout_scan+0x5fc
vm_pageout(0,f8550d48,80859975,311,0) at vm_pageout+0x31b
fork_exit(807b59f0,0,f8550d48) at fork_exit+0x7e
fork_trampoline() at fork_trampoline+0x8
- --- trap 0x1, eip = 0, esp = 0xf8550d7c, ebp = 0 ---
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- -- 
Peter_Losher at isc.org | ISC | OpenPGP Key E8048D08 | "The bits must flow"
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