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Document Audience:	PUBLIC
Document ID:	57728
Title:	Document ID 57728
Synopsis:	Heavy UDP Usage May Cause a System to Panic
Update Date:	2005-01-26

Description

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Sun(sm) Alert Notification

Sun Alert ID: 57728
Synopsis: Heavy UDP Usage May Cause a System to Panic
Category: Availability
Product: Solaris
BugIDs: 4865856
Avoidance: Patch
State: Resolved
Date Released: 24-Jan-2005, 26-Jan-2004
Date Closed: 26-Jan-2004
Date Modified: 26-Jan-2004

1. Impact A system panic may occur on systems that open and close several UDP end points.

2. Contributing Factors This issue can occur in the following releases:

SPARC Platform

Solaris 8 without patch 117350-16
Solaris 9 without patch 117171-15

x86 Platform

Solaris 8 without patch 117351-16
Solaris 9 without patch 117172-15

Note: Solaris 7 is not impacted by this issue.

3. Symptoms If the described issue occurs, the system will panic with a "NULL pointer dereference" message similar to the following:

    BAD TRAP: type=31 rp=2a100265720 addr=74 mmu_fsr=0
    occurred in module "udp" due to a NULL pointer dereference

A stack trace similar to the following will also be seen:

    unix: setjmp ()
    unix: panicsys+0x44 (0x10592c0,0x2a100bd7518,0x1,0x1,0x8,0x8)
    unix: c) ()
    unix: panic+0x1c (0x10592c0,0x31,0x2a100bd7760,0x50,0x0,0x30000571578)
    unix: die+0x80 (0x31,0x2a100bd7760,0x50,0x0)
    unix: trap+0x874 (0x2a100bd7760)
    unix: priv_rtt
    genunix: releasestr+0x28 (0x0,0x7813fbcc,0x7813f800,0x30011925d00,0x0,0x4)
    udp: udp_rput ()
    genunix: qdrain_syncq+0x9c (0x3000dfe9ee8,0x3000dfe9d08)
    genunix: drain_syncq+0x2d8 (0x3000dfe9ee8,?,?,?,0x2a100bd7d40,0x0)
    genunix: syncq_service ()
    genunix: taskq_d_thread+0x70 (0x30000619f80,0x0)
    unix: thread_start+0x4 (0x30000619f80,0x0,0xc578000000000,0x0,0x0,0x0

Solution Summary

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4. Relief/Workaround There is no workaround. Please see the "Resolution" section below.

5. Resolution This issue is addressed in the following releases:

SPARC Platform

Solaris 8 with patch 117350-16 or later
Solaris 9 with patch 117171-15 or later

x86 Platform

Solaris 8 with patch 117351-16 or later
Solaris 9 with patch 117172-15 or later

Change History 26-Jan-2004:

State: Resolved
Updated Contributing Factors and Resolution sections

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