Date: Mon, 19 Jun 2006 05:20:11 +1000 From: Peter Jeremy <peterjeremy@optushome.com.au> To: current@freebsd.org Subject: NULL pointer dereference panic Message-ID: <20060618192011.GF715@turion.vk2pj.dyndns.org>
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--+sHJum3is6Tsg7/J Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I got the following panic is a fresh -current. Unfortunately, it didn't do a crash dump - I'm not sure why. Has anyone else seen this? Fatal trap 12: page fault while in kernel mode fault virtual address =3D 0x2c fault code =3D supervisor read, page not present instruction pointer =3D 0x20:0xc052cf96 stack pointer =3D 0x28:0xd6690970 frame pointer =3D 0x28:0xd6690990 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, def32 1, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 97180 (script) trap number =3D 12 panic: page fault KDB: stack backtrace: kdb_backtrace(c07008a8,c076ac80,c06eb1ad,d6690844,100,...) at kdb_backtrace= +0x2e panic(c06eb1ad,c0702b35,d6690930,1,1,...) at panic+0xb7 trap_fatal(d6690930,2c,c071dc0f,2fd,c2b6f6c0,...) at trap_fatal+0x30e trap_pfault(d6690930,0,2c,c054f7e1,2c,...) at trap_pfault+0x1ba trap(8,28,28,c0709faa,1a3,...) at trap+0x461 calltrap() at calltrap+0x5 --- trap 0xc, eip =3D 0xc052cf96, esp =3D 0xd6690970, ebp =3D 0xd6690990 --- _mtx_lock_flags(24,0,c0709faa,1a3,0,...) at _mtx_lock_flags+0x46 vfs_ref(0,d66909f8,0,d66909dc,c06d4f68,...) at vfs_ref+0x32 vop_stdgetwritemount(d66909f8,c076ea74,d66909f0,d6690a2c,d6690a14,...) at v= op_stdgetwritemount+0x1d VOP_GETWRITEMOUNT_APV(c073df20,d66909f8,c07b4988,c06fe125,d6690a0c,...) at = VOP_GETWRITEMOUNT_APV+0xa8 vn_start_write(c4251000,d6690a2c,1,2,c0701fa5,...) at vn_start_write+0x37 vn_close(c4251000,3,c2f37780,c2b6f6c0,6b5,...) at vn_close+0x65 vn_closefile(c370c750,c2b6f6c0,d6690af0,c0512cce,c370c750,...) at vn_closef= ile+0xe9 devfs_close_f(c370c750,c2b6f6c0,c06fca41,876,c370c750,...) at devfs_close_f= +0x19 fdrop_locked(c370c750,c2b6f6c0,c06fca41,861) at fdrop_locked+0xbe fdrop(c370c750,c2b6f6c0,d6690b38,c0567d6f,c076ea74,0,c07046e5,6b5,c07b4a6c,= d6690b68,0,c07b4a68,d6690b64,c0566bba,0,c394872c,246,c0744d24,c394872c,661,= c06fca41,d6690b8c,c052d0f2,c394872c,1,c06ff4e5,13 closef(c370c750,c2b6f6c0,c06fca41,661,c07b4a68,...) at closef+0x427 fdfree(c2b6f6c0,0,c06fd2c3,106,d6690c50,...) at fdfree+0x5c6 exit1(c2b6f6c0,0,d6690d30,c06bf073,c2b6f6c0,...) at exit1+0x57b sys_exit(c2b6f6c0,d6690d04,4,c2b6f6c0,c33f0000,...) at sys_exit+0x1d syscall(3b,3b,3b,1,0,...) at syscall+0x2e3 Xint0x80_syscall() at Xint0x80_syscall+0x1f --- syscall (1, FreeBSD ELF32, sys_exit), eip =3D 0x281012fb, esp =3D 0xbfb= fe1ec, ebp =3D 0xbfbfe1f8 --- --=20 Peter Jeremy --+sHJum3is6Tsg7/J Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQFEladq/opHv/APuIcRArStAJ9nxomPycI/kS9rU3omJoh1t0llYgCeIn7Q hksF8X+eccCLv3Dt6X8P9U0= =x1DC -----END PGP SIGNATURE----- --+sHJum3is6Tsg7/J--
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