Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0040 -- [Solaris] On Solaris 10 Possible System Panics with a "Bad Trap" from the drain_squeue() Function Under High Stress 15 February 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: drain_squeue Publisher: Sun Microsystems Operating System: Solaris 10 Impact: Denial of Service Access: Remote/Unauthenticated Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102554-1 Revision History: February 15 2007: Final patch availability update. January 22 2007: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Sun(sm) Alert Notification * Sun Alert ID: 102554 * Synopsis: On Solaris 10 Possible System Panics with a "Bad Trap" from the drain_squeue() Function Under High Stress * Category: Availability * Product: Solaris 10 Operating System * BugIDs: 6266950 * Avoidance: Patch * State: Resolved * Date Released: 09-Aug-2006, 13-Feb-2007 * Date Closed: 13-Feb-2007 * Date Modified: 19-Jan-2007, 13-Feb-2007 1. Impact System panics in drain_squeue() TCP/IP function under heavy stress. The following Sun Alerts describe TCP/IP issues for the new SPARC systems which use CMT processors. * Sun Alert ID: 102551 * Sun Alert ID: 102553 * Sun Alert ID: 102554 2. Contributing Factors This issue can occur in the following releases: SPARC Platform * Solaris 10 without patch 119998-01 x86 Platform * Solaris 10 without patch 119999-01 Notes: Solaris 8 and 9 are not impacted by this issue. Extremely heavy TCP/IP loads with many tens of thousands of rapidly opening/closing TCP connections. CMT processors (Chip Multi-Threading technology) are more likely to sustain the throughput required, while still being able to context switch rapidly enough to reproduce this. It is highly unlikely that this issue will be seen on other systems. There are two classes of system using CMT processors. These can be identified using the following commands: a) Systems with Sun4v kernel architecture use CMT processors. These are identified by the command: % uname -m which will return "sun4v". b) UltraSPARC IV and UltraSPARC IV+ systems use CMT processors. These are identified by the command: % prtconf -pv | grep "SUNW,UltraSPARC-IV" which will return a non-NULL result something similar to: compatible: 'SUNW,UltraSPARC-IV' 3. Symptoms The following panic string and stack trace is representative of this issue: BAD TRAP: type=31 rp=2a17492b380 addr=1c mmu_fsr=0 occurred in module "ip" due to a NULL pointer dereference <trap>ip:squeue_drain+0x114(0x6000192d300, 0x10) ip:squeue_enter+0x34c() ip:tcp_wput(0x30011b6cbe0, 0x60023c83780) - frame recycled unix:putnext+0x218(0x30011b6ce70, 0x60023c83780?) genunix:strput+0x1b4(0x300143f46b8, 0x60023c83780, 0x0, 0x2a17492b918, 0x0, 0x0) genunix:kstrputmsg+0x328(0x60008790780, , 0x0, 0x0, 0x0, 0x2c4, 0x0) sockfs:sotpi_setsockopt+0x58c(0x3001445ebf0, 0x121c2113, 0x6c3e4fdd, 0x2a17492bac8, 0xc) sockfs:setsockopt+0xc0() unix:syscall_trap+0xac() -- switch to user thread's user stack -- Please be aware that athough this stacktrace does not match the stacktrace in the bug report for bug 6266950, it is the same issue. The stacktrace in the bug report illustrated this same problem when running an IP module compiled with DEBUG turned on. 4. Relief/Workaround There is no workaround. Please see Resolution section below. 5. Resolution This issue is addressed in the following releases: SPARC Platform * Solaris 10 with patch 119998-01 or later x86 Platform * Solaris 10 with patch 119999-02 or later Change History 19-Jan-2007: * Updated Relief/Workaround with temporary patches 13-Feb-2007: * Updated Contributing Factors, Relief/Workaround and Resolution sections * State: Resolved This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements. Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRdOobih9+71yA2DNAQIBOQP/b2R7U++GoNFd9b8W8YcqUbtGmU6ZDPBB 4k9Yf8e5GhdbMf8AOvhSeY1AHrTkYMDYQcN5i2yP8gKMteUlWev/99TrOJR3JDud R8Y1tR/fEgcUI8Tk8HJ7VRZKll5s3RSH/NBY/pC5KZ/1eVClr9BRuLQ5omwjYgZb GNwvg42t2C4= =OE/V -----END PGP SIGNATURE-----