Date: Fri, 24 Jan 2003 23:44:06 -0800 From: Kris Kennaway <kris@obsecurity.org> To: current@FreeBSD.org, jeff@FreeBSD.org, alc@FreeBSD.org Subject: acquiring duplicate lock of same type: "system map" Message-ID: <20030125074406.GC11415@rot13.obsecurity.org>
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bento found the following about 5 minutes after I upgraded it to 5.0.
acquiring duplicate lock of same type: "system map"
1st system map @ ../../../vm/vm_map.c:2168
2nd system map @ ../../../vm/vm_kern.c:325
Debugger("witness_lock")
Stopped at Debugger+0x55: xchgl %ebx,in_Debugger.0
db> trace
Debugger(c031e895,c03431d1,c034306c,145,0) at Debugger+0x55
witness_lock(c082f110,8,c034306c,145,0) at witness_lock+0x667
_mtx_lock_flags(c082f110,0,c034306c,145,e2e709bc) at _mtx_lock_flags+0xb2
_vm_map_lock(c082f0b0,c034306c,145,e2e709c0,c0398ad8) at _vm_map_lock+0x36
kmem_malloc(c082f0b0,1000,5,e2e70a28,c02bceed) at kmem_malloc+0x65
page_alloc(c083a380,1000,e2e70a1b,5,c03988a8) at page_alloc+0x27
slab_zalloc(c083a380,5,c0344a06,667,c083a564) at slab_zalloc+0xfd
uma_zone_slab(c083a380,5,c0344a06,667,0) at uma_zone_slab+0xd8
uma_zalloc_internal(c083a380,0,5,6e7,0) at uma_zalloc_internal+0x55
uma_zfree_arg(c083a540,c6612260,0,263,c01bc2e4,c082e8e8) at uma_zfree_arg+0x2c9
vm_object_terminate(c6612260,0,c0343b02,1b4,c082e8e8) at vm_object_terminate+0x246
vm_object_deallocate(c6612260,c082e8e8,c6612260,c082e8e8,e2e70b54) at vm_object_deallocate+0x1cc
vm_map_entry_delete(c082f000,c082e8e8,c034323f,85b,8) at vm_map_entry_delete+0x3b
vm_map_delete(c082f000,e2eef000,e2ef3000,c63948f0,c63948f0) at vm_map_delete+0x3c0
vm_map_remove(c082f000,e2eef000,e2ef3000,e2e70ba8,c01ddccd) at vm_map_remove+0x55
kmem_free(c082f000,e2eef000,4000,536,c63948f0) at kmem_free+0x32
pipe_free_kmem(c63948f0,0,c0336818,58b,0) at pipe_free_kmem+0x9d
pipeclose(c63948f0,c6392654,e2e70c44,c019b7ac,c6392654) at pipeclose+0x25c
pipe_close(c6392654,c65930e0,c0330e48,739,0) at pipe_close+0x33
fdrop_locked(c6392654,c65930e0,c0330e48,673,c65930e0) at fdrop_locked+0x17c
fdrop(c6392654,c65930e0,c0396b80,c0398ad8,246) at fdrop+0x3e
closef(c6392654,c65930e0,c0330e48,33a,c6392654) at closef+0xac
close(c65930e0,e2e70d10,c0348e68,407,1) at close+0x158
syscall(2f,2f,2f,bfbff8db,bfbff8c0) at syscall+0x28e
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (6, FreeBSD ELF32, close), eip = 0x807bd13, esp = 0xbfbff87c, ebp = 0xbfbff968 ---
db>
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