Date: Fri, 21 Apr 2006 07:47:47 +0800 From: David Xu <davidxu@freebsd.org> To: Kris Kennaway <kris@obsecurity.org> Cc: Daniel Eischen <deischen@freebsd.org>, freebsd-sparc64@freebsd.org, freebsd-threads@freebsd.org Subject: Re: pthread_mutex_timedlock on sparc64 Message-ID: <200604210747.47903.davidxu@freebsd.org> In-Reply-To: <20060420232533.GA32046@xor.obsecurity.org> References: <20060418204240.GA69833@xor.obsecurity.org> <200604210717.22947.davidxu@freebsd.org> <20060420232533.GA32046@xor.obsecurity.org>
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On Friday 21 April 2006 07:25, Kris Kennaway wrote: > > Do you have WITNESS backtrace ? I don't have sparc hardware. > > Actually I mis-remembered a bit. > > > panic: _mtx_lock_sleep: recursed on non-recursive mutex system map @ > > ../../../vm/vm_map.c:2993 panic() at panic+0x164 > > _mtx_lock_sleep() at _mtx_lock_sleep+0x40 > > _mtx_lock_flags() at _mtx_lock_flags+0x98 > > _vm_map_lock_read() at _vm_map_lock_read+0x1c > > vm_map_lookup() at vm_map_lookup+0x1c > > vm_fault() at vm_fault+0x68 > > trap_pfault() at trap_pfault+0x1a8 > > trap() at trap+0x2b0 > > -- fast data access mmu miss tar=0xe85a6000 %o7=0xc02f3b08 -- > > vm_map_entry_splay() at vm_map_entry_splay+0x10 > > vm_map_find() at vm_map_find+0x34 > > kmem_alloc_nofault() at kmem_alloc_nofault+0x44 > > vm_thread_new() at vm_thread_new+0x44 > > thread_init() at thread_init+0x8 > > slab_zalloc() at slab_zalloc+0x264 > > uma_zone_slab() at uma_zone_slab+0x1ac > > uma_zalloc_bucket() at uma_zalloc_bucket+0x1b4 > > uma_zalloc_arg() at uma_zalloc_arg+0x398 > > thread_alloc() at thread_alloc+0x18 > > create_thread() at create_thread+0x78 > > thr_new() at thr_new+0x64 > > syscall() at syscall+0x2dc > > -- syscall (455, FreeBSD ELF64, thr_new) %o7=0x40348e7c -- > > It may be a deeper vm problem. > > Kris I think it is a bug of some VM allocation code, it probably should be reported on -CURRENT. David Xu
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