Date: Tue, 1 Feb 2005 16:12:30 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Kris Kennaway <kris@obsecurity.org> Cc: jroberson@chesapeake.net Subject: Re: Panic: Memory modified after free Message-ID: <20050202001230.GA21847@xor.obsecurity.org> In-Reply-To: <20050202000613.GA9758@xor.obsecurity.org> References: <20050130094616.GA76093@peter.osted.lan> <20050202000613.GA9758@xor.obsecurity.org>
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--5vNYLRcllDrimb99 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Feb 01, 2005 at 04:06:13PM -0800, Kris Kennaway wrote: > On Sun, Jan 30, 2005 at 10:46:16AM +0100, Peter Holm wrote: > > With GENERIC HEAD from Jan 28 20:19 UTC + mpsafe_vfs =3D 1 I got: > >=20 > > Memory modified after free 0xc1d7c100(124) val=3Dc23fa000 @ 0xc1d7c164 > >=20 > > panic(c083d005,c083b16e,c083cfd6,c1d7c100,7c) at panic+0xef > > mtrash_ctor(c1d7c100,80,0,402) at mtrash_ctor+0x4d > > uma_zalloc_arg(c10526e0,0,402) at uma_zalloc_arg+0x14c > > malloc(68,c08bcd60,402,c094f0c0,0) at malloc+0xae > > inodedep_lookup(c167a000,193a1,1,cf261be0,c094f0c0) at inodedep_lookup+= 0xa7 > > softdep_change_linkcnt(c213b578,c6bc54f0,c65f3f88,c213b578,c1c39270) at= softdep_change_linkcnt+0x31 > > ufs_dirremove(c17d83a8,c213b578,100800c,0,cf261c48) at ufs_dirremove+0x= 12d > > ufs_remove(cf261c4c) at ufs_remove+0x4b > > VOP_REMOVE_AP(cf261c4c) at VOP_REMOVE_AP+0x62 > > kern_unlink(c1add2e0,bfbfe940,0,cf261d40,c07bd6c3) at kern_unlink+0x167 > > unlink(c1add2e0,cf261d14,1,28,292) at unlink+0x12 > > syscall(2804002f,bfbf002f,bfbf002f,2804f6c0,bfbfeb14) at syscall+0x213 > >=20 > > More info at http://www.holm.cc/stress/log/cons112.html >=20 > > panic: Most recently used by inodedep >=20 > You can try to use DEBUG_MEMGUARD with M_INODEDEP to find this. I'll > add that to my SMP package machines to see if I can trigger it too. Well, that didn't work: panic: MEMGUARD: Cannot handle objects > PAGE_SIZE CC'ing Bosko, the memguard author. Kris --5vNYLRcllDrimb99 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCABrtWry0BWjoQKURAvPZAJ4gNR5IUTv3w9O7XShoI2+w9y5EHgCgn0cZ fyrB4nC2A3uaOxtHs2YfJrI= =SL4U -----END PGP SIGNATURE----- --5vNYLRcllDrimb99--
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