Date: Wed, 23 Jun 2010 17:01:33 -0400 From: ben wilber <ben@desync.com> To: d@delphij.net Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: zfs panic Message-ID: <20100623210133.GA10694@exodus.desync.com> In-Reply-To: <4C2272E5.2090901@delphij.net> References: <20100623164401.GA7914@exodus.desync.com> <4C2272E5.2090901@delphij.net>
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On Wed, Jun 23, 2010 at 01:47:33PM -0700, Xin LI wrote: > > > > panic: _sx_xlock_hard: recursed on non-recursive sx buf_hash_table.ht_locks[i].ht_lock @ /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/c > > ommon/fs/zfs/arc.c:1626 > > Any chance to obtain a backtrace for the panic? >From r209229: db:0:kdb.enter.default> bt Tracing pid 3233 tid 100396 td 0xffffff013600f000 kdb_enter() at kdb_enter+0x3d panic() at panic+0x1c8 _sx_xlock_hard() at _sx_xlock_hard+0x93 _sx_xlock() at _sx_xlock+0xaa arc_buf_remove_ref() at arc_buf_remove_ref+0x7b dbuf_rele() at dbuf_rele+0x15d zfs_freebsd_reclaim() at zfs_freebsd_reclaim+0xe1 VOP_RECLAIM_APV() at VOP_RECLAIM_APV+0xe8 vgonel() at vgonel+0x186 vnlru_free() at vnlru_free+0x2f4 vfs_lowmem() at vfs_lowmem+0x31 kmem_malloc() at kmem_malloc+0x12c page_alloc() at page_alloc+0x18 keg_alloc_slab() at keg_alloc_slab+0xe6 keg_fetch_slab() at keg_fetch_slab+0x18e zone_fetch_slab() at zone_fetch_slab+0x4f uma_zalloc_arg() at uma_zalloc_arg+0x56b arc_get_data_buf() at arc_get_data_buf+0xaa arc_read_nolock() at arc_read_nolock+0x1cb arc_read() at arc_read+0x71 dbuf_read() at dbuf_read+0x4ea dmu_buf_hold_array_by_dnode() at dmu_buf_hold_array_by_dnode+0x119 dmu_buf_hold_array() at dmu_buf_hold_array+0x57 dmu_read_uio() at dmu_read_uio+0x3f zfs_freebsd_read() at zfs_freebsd_read+0x558 VOP_READ_APV() at VOP_READ_APV+0xe2 vn_read() at vn_read+0x1d0 dofileread() at dofileread+0x97 kern_preadv() at kern_preadv+0x6a pread() at pread+0x52 syscallenter() at syscallenter+0x217 syscall() at syscall+0x39 Xfast_syscall() at Xfast_syscall+0xe1 --- syscall (475, FreeBSD ELF64, pread), rip = 0x80100c14c, rsp = 0x7fffffbfeb48, rbp = 0x2 --- Thanks.
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