From owner-freebsd-stable@FreeBSD.ORG Mon Aug 27 13:13:13 2012 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 16359106566C for ; Mon, 27 Aug 2012 13:13:13 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from albert.catwhisker.org (m209-73.dsl.rawbw.com [198.144.209.73]) by mx1.freebsd.org (Postfix) with ESMTP id DFF7F8FC17 for ; Mon, 27 Aug 2012 13:13:12 +0000 (UTC) Received: from albert.catwhisker.org (localhost [127.0.0.1]) by albert.catwhisker.org (8.14.5/8.14.5) with ESMTP id q7RDDBZf009280 for ; Mon, 27 Aug 2012 06:13:11 -0700 (PDT) (envelope-from david@albert.catwhisker.org) Received: (from david@localhost) by albert.catwhisker.org (8.14.5/8.14.5/Submit) id q7RDDBjm009279 for stable@freebsd.org; Mon, 27 Aug 2012 06:13:11 -0700 (PDT) (envelope-from david) Date: Mon, 27 Aug 2012 06:13:11 -0700 From: David Wolfskill To: stable@freebsd.org Message-ID: <20120827131311.GE1442@albert.catwhisker.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gDGSpKKIBgtShtf+" Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Cc: Subject: FreeBSD/i386 stable/9 @239722: REDZONE: Buffer underflow detected X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Aug 2012 13:13:13 -0000 --gDGSpKKIBgtShtf+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I've been tracking stable/9 on a daily basis on one of the slices of my laptop for a while now, b ut just happened to review the scrollback on vty0 this morning, and noticed the (hightlighted, though that doesn't show up in the below cut/paste) whines "REDZONE: Buffer underflow detected...." I included a few line before & after to provide some context. As far as I have been able to tell, it's running OK; still, perhaps there's something worth chasing down? The uname -a output is: FreeBSD g1-227.catwhisker.org 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #228 23= 9646M: Fri Aug 24 04:58:07 PDT 2012 root@g1-227.catwhisker.org:/usr/obj= /usr/src/sys/CANARY i386 though the GRN there is a little bit misleading, as both kernel & userland were rebuilt with sources @239722M around 05:00 hrs. this morning US/Pacific time. Anyway, here's the cut/paster: =2E.. Mounting local file systems:. Setting hostname: localhost. Starting dhclient. em0: no link .............. giving up /etc/rc.d/dhclient: WARNING: failed to start dhclient wlan0: Ethernet address: 00:21:6a:26:34:c0 Starting wpa_supplicant. Starting dhclient. wlan0: no link ......wlan0: link state changed to UP got link dhclient: /etc/dhclient-enter-hooks invoked with reason PREINIT dhclient: Setting hostname from localhost to null string dhclient: /etc/dhclient-exit-hooks invoked with reason PREINIT dhclient: reason was PREINIT; no action taken dhclient: Exiting /etc/dhclient-exit-hooks (PREINIT) with exit_status 0 DHCPREQUEST on wlan0 to 255.255.255.255 port 67 DHCPACK from 172.17.0.1 Expensive timeout(9) function: 0xc0b91b10(0) 0.010922407 s bound to 172.17.1.227 -- renewal in 43200 seconds. Starting Network: lo0 em0 iwn0 fwe0 fwip0 ipfw0. lo0: flags=3D8049 metric 0 mtu 16384 options=3D600003 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0xe inet 127.0.0.1 netmask 0xff000000 nd6 options=3D21 em0: flags=3D8843 metric 0 mtu 1500 options=3D4219b ether 00:24:e8:9c:11:0f nd6 options=3D29 media: Ethernet autoselect status: no carrier iwn0: flags=3D8843 metric 0 mtu 2290 ether 00:21:6a:26:34:c0 nd6 options=3D29 media: IEEE 802.11 Wireless Ethernet autoselect mode 11g status: associated fwe0: flags=3D8802 metric 0 mtu 1500 options=3D8 ether 4a:4f:c0:37:06:01 nd6 options=3D29 ch 1 dma -1 fwip0: flags=3D8802 metric 0 mtu 1500 lladdr 4a.4f.c0.0.10.37.6.1.a.2.ff.fe.0.0.0.0 nd6 options=3D29 ipfw0: flags=3D8801 metric 0 mtu 65536 nd6 options=3D29 Starting devd. REDZONE: Buffer underflow detected. 1 byte corrupted before 0xced40080 (429= 49667 96 bytes allocated). Allocation backtrace: #0 0xc0ce5fef at redzone_setup+0xcf #1 0xc0a5a959 at malloc+0x1d9 #2 0xc0a9b200 at devctl_queue_data_f+0x40 #3 0xc0aa066a at devaddq+0x20a #4 0xc0a9d58c at device_attach+0x46c #5 0xc0a9e35b at bus_generic_attach+0x2b #6 0xc0530cf5 at acpi_pci_attach+0x185 #7 0xc0a9d489 at device_attach+0x369 #8 0xc0a9e35b at bus_generic_attach+0x2b #9 0xc0532e52 at acpi_pcib_attach+0x262 #10 0xc053414f at acpi_pcib_pci_attach+0x9f #11 0xc0a9d489 at device_attach+0x369 #12 0xc0a9e35b at bus_generic_attach+0x2b #13 0xc0530cf5 at acpi_pci_attach+0x185 #14 0xc0a9d489 at device_attach+0x369 #15 0xc0a9e35b at bus_generic_attach+0x2b #16 0xc0532e52 at acpi_pcib_attach+0x262 #17 0xc0533845 at acpi_pcib_acpi_attach+0x2c5 Free backtrace: #0 0xc0ce62aa at redzone_check+0x1ca #1 0xc0a5a9a8 at free+0x38 #2 0xc0a9b086 at devread+0x1a6 #3 0xc0a256d7 at giant_read+0x87 #4 0xc096e292 at devfs_read_f+0xc2 #5 0xc0ab6f29 at dofileread+0x99 #6 0xc0ab6b48 at sys_read+0x98 #7 0xc0ddc197 at syscall+0x387 #8 0xc0dc4f51 at Xint0x80_syscall+0x21 REDZONE: Buffer overflow detected. 10 bytes corrupted after 0xced3fe8c (429= 49667 96 bytes allocated). Allocation backtrace: #0 0xc0ce5fef at redzone_setup+0xcf #1 0xc0a5a959 at malloc+0x1d9 #2 0xc0a9b200 at devctl_queue_data_f+0x40 #3 0xc0aa066a at devaddq+0x20a #4 0xc0a9d58c at device_attach+0x46c #5 0xc0a9e35b at bus_generic_attach+0x2b #6 0xc0530cf5 at acpi_pci_attach+0x185 #7 0xc0a9d489 at device_attach+0x369 #8 0xc0a9e35b at bus_generic_attach+0x2b #9 0xc0532e52 at acpi_pcib_attach+0x262 #10 0xc053414f at acpi_pcib_pci_attach+0x9f #11 0xc0a9d489 at device_attach+0x369 #12 0xc0a9e35b at bus_generic_attach+0x2b #13 0xc0530cf5 at acpi_pci_attach+0x185 #14 0xc0a9d489 at device_attach+0x369 #15 0xc0a9e35b at bus_generic_attach+0x2b #16 0xc0532e52 at acpi_pcib_attach+0x262 #17 0xc0533845 at acpi_pcib_acpi_attach+0x2c5 Free backtrace: #0 0xc0ce63f2 at redzone_check+0x312 #1 0xc0a5a9a8 at free+0x38 #2 0xc0a9b086 at devread+0x1a6 #3 0xc0a256d7 at giant_read+0x87 #4 0xc096e292 at devfs_read_f+0xc2 #5 0xc0ab6f29 at dofileread+0x99 #6 0xc0ab6b48 at sys_read+0x98 #7 0xc0ddc197 at syscall+0x387 #8 0xc0dc4f51 at Xint0x80_syscall+0x21 Starting Network: usbus0. Starting Network: usbus1. Starting Network: usbus2. Starting Network: usbus3. Starting Network: usbus4. Starting Network: usbus5. Starting Network: usbus6. Starting Network: usbus7. Starting Network: fwe0. fwe0: flags=3D8802 metric 0 mtu 1500 options=3D8 ether 4a:4f:c0:37:06:01 nd6 options=3D29 ch 1 dma -1 Starting Network: fwip0. fwip0: flags=3D8802 metric 0 mtu 1500 lladdr 4a.4f.c0.0.10.37.6.1.a.2.ff.fe.0.0.0.0 nd6 options=3D29 dhclient already running? (pid=3D699). add net ::ffff:0.0.0.0: gateway ::1 add net ::0.0.0.0: gateway ::1 add net fe80::: gateway ::1 add net ff02::: gateway ::1 =2E.. I'll be happy to test patches. 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. --gDGSpKKIBgtShtf+ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlA7cmYACgkQmprOCmdXAD0GqgCggSqEeaOQu7IzVrvYYEdbAGnW MHsAn36dZvbV/NGgoOpYNId/LB0sGTaY =XUS4 -----END PGP SIGNATURE----- --gDGSpKKIBgtShtf+--