Date: Thu, 26 Jul 2012 08:46:10 -0700 From: David Wolfskill <david@catwhisker.org> To: current@freebsd.org Subject: panic: _mtx_lock_sleep: recursed on non-recursive mutex em0 @ /usr/src/sys/dev/e1000/if_lem.c:881 Message-ID: <20120726154610.GC1587@albert.catwhisker.org>
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--aM3YZ0Iwxop3KEKx Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable This is at r238795; cut/paste of backtrace: KDB: enter: panic [ thread pid 12 tid 100026 ] Stopped at kdb_enter+0x3d: movl $0,kdb_why db> bt Tracing pid 12 tid 100026 td 0xc6755000 kdb_enter(c0f93c5f,c0f93c5f,c0f91e21,f08398f0,c1825c80,...) at kdb_enter+0x= 3d panic(c0f91e21,c66739a0,c0f20db8,371,c6755000,...) at panic+0x1c4 _mtx_lock_sleep(c68b8560,c6755000,c0f20db8,c0f20db8,371,...) at _mtx_lock_s= leep+0x35e _mtx_lock_flags(c68b8560,0,c0f20db8,371,0,...) at _mtx_lock_flags+0xdb lem_start(c68ba000,0,c0fa806c,d20,2a,...) at lem_start+0x33 if_transmit(c68ba000,c93d9000,6,c6755000,c65da588,...) at if_transmit+0x129 ether_output(c68ba000,c93d9000,f0839aa4,0,0,...) at ether_output+0x5df arpintr(c93d9000,8,c0f50314,153,0,...) at arpintr+0x108c netisr_dispatch_src(7,0,c93d9000,c93d9000,c68ba000,c93d0806) at netisr_disp= atch_src+0xa7 netisr_dispatch(7,c93d9000,c93d9000,10,3,...) at netisr_dispatch+0x20 ether_demux(c68ba000,c93d9000,3,0,3,...) at ether_demux+0x133 ether_nh_input(c93d9000,c8f012c8,644d6000,c9492d00,0,...) at ether_nh_input= +0x329 netisr_dispatch_src(9,0,c93d9000,e2e,2,1) at netisr_dispatch_src+0xa7 netisr_dispatch(9,c93d9000) at netisr_dispatch+0x20 ether_input(c68ba000,c93d9000,c0f20db8,e2e,c11454c0,...) at ether_input+0x21 lem_intr(c68b6000,8,c0f8e00d,561,0,...) at lem_intr+0x567 intr_event_execute_handlers(c11454c0,c6626200,c0f8e00d,561,c6755000,...) at= intr_event_execute_handlers+0xc5 ithread_loop(c6627730,f0839d08,c0f8dd64,3db,0,...) at ithread_loop+0xe2 fork_exit(c0a2dcb0,c6627730,f0839d08) at fork_exit+0x7c fork_trampoline() at fork_trampoline+0x8 --- trap 0, eip =3D 0, esp =3D 0xf0839d40, ebp =3D 0 --- db> show locks exclusive sleep mutex em0 (EM TX Lock) r =3D 0 (0xc68b8560) locked @ /usr/s= rc/sys/dev/e1000/if_lem.c:1324 exclusive sleep mutex em0 (EM Core Lock) r =3D 0 (0xc68b854c) locked @ /usr= /src/sys/dev/e1000/if_lem.c:1302 db>=20 I need to head off to a meeting; I can poke at the machine a bit more in a couple of hours or so. Peace, david --=20 David H. Wolfskill david@catwhisker.org Depriving a girl or boy of an opportunity for education is evil. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --aM3YZ0Iwxop3KEKx Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlARZkEACgkQmprOCmdXAD2eMACeJ+jeIqBlAorF2dQFcKaB+FT3 eEsAnibzYn8tJQNnlEsdad76KJSYXSl3 =i85M -----END PGP SIGNATURE----- --aM3YZ0Iwxop3KEKx--
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