Date: Wed, 27 Apr 2005 11:52:28 -0700 From: Kris Kennaway <kris@obsecurity.org> To: jroberson@chesapeake.net, current@FreeBSD.org Subject: ppanic: mutex lockbuilder mtxpool not owned at ../../../kern/kern_lock.c:129 Message-ID: <20050427185228.GA19289@xor.obsecurity.org>
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--bp/iNruPH9dso1Pn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On 12-proc sparc64 E4500 running 6.0 with mpsafevfs. Note the 'ppanic'; this may mean that another CPU tried to panic and then this CPU panicked immediately with a secondary panic. ppanic: mutex lockbuilder mtxpool not owned at ../../../kern/kern_lock.c:129 cpuid = 1 KDB: enter: panic [thread pid 48 tid 100058 ] Stopped at kdb_enter+0x3c: ta %xcc, 1 db> wh Tracing pid 48 tid 100058 td 0xfffff800fed7b300 panic() at panic+0x16c _mtx_assert() at _mtx_assert+0x6c acquire() at acquire+0x138 lockmgr() at lockmgr+0x58c vop_stdlock() at vop_stdlock+0x14 VOP_LOCK_APV() at VOP_LOCK_APV+0xb4 ffs_lock() at ffs_lock+0xc VOP_LOCK_APV() at VOP_LOCK_APV+0xb4 vlrureclaim() at vlrureclaim+0x194 vnlru_proc() at vnlru_proc+0x16c fork_exit() at fork_exit+0x94 fork_trampoline() at fork_trampoline+0x8 db> show lockedvnods Locked vnodes panic: _mtx_lock_sleep: recursed on non-recursive mutex lockbuilder mtxpool @ ../../../kern/kern_lock.c:542 cpuid = 1 KDB: stack backtrace: sched_bind() at sched_bind+0x78 boot() at boot+0x24 panic() at panic+0x1c4 _mtx_lock_sleep() at _mtx_lock_sleep+0x40 _mtx_lock_flags() at _mtx_lock_flags+0x84 lockstatus() at lockstatus+0x18 vop_stdislocked() at vop_stdislocked+0xc VOP_ISLOCKED_APV() at VOP_ISLOCKED_APV+0xb4 lockedvnodes() at lockedvnodes+0x4c db_command() at db_command+0x2ac db_command_loop() at db_command_loop+0x70 db_trap() at db_trap+0xf0 kdb_trap() at kdb_trap+0xa0 trap() at trap+0x264 -- breakpoint %o7=0xc0189674 -- kdb_enter() at kdb_enter+0x3c panic() at panic+0x16c _mtx_assert() at _mtx_assert+0x6c acquire() at acquire+0x138 lockmgr() at lockmgr+0x58c vop_stdlock() at vop_stdlock+0x14 VOP_LOCK_APV() at VOP_LOCK_APV+0xb4 ffs_lock() at ffs_lock+0xc VOP_LOCK_APV() at VOP_LOCK_APV+0xb4 vlrureclaim() at vlrureclaim+0x194 vnlru_proc() at vnlru_proc+0x16c fork_exit() at fork_exit+0x94 fork_trampoline() at fork_trampoline+0x8 As usual on SMP I was unable to trace the processes running on the other CPUs. Kris --bp/iNruPH9dso1Pn Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCb99sWry0BWjoQKURAmxlAJ442NvVTz4HwabKZALLq20QcA5V9ACgnTo/ h2MtHCB+hgvMPoTrZU+GeJo= =ew1F -----END PGP SIGNATURE----- --bp/iNruPH9dso1Pn--
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