The memory leak is gone in the current V5-8-patches. I have not dug into trying to bisect which change fixed it.
Bill On Tue, May 14, 2019 at 7:01 AM Bill Fenner <fen...@gmail.com> wrote: > Perhaps getbulk no longer dumps core, but I can not get it to return > anything but GENERR any more, and, it seems to leak memory. > > Any "large enough" request seems to fail in this way, e.g., snmpbulkget -v > 3 ... -Cn 5 -Cr 50 sysUpTime sysUpTime sysUpTime sysUpTime sysUpTime .1 > > This is particularly frustrating because code was added to 5.8 to rebuild > a getbulk reply if it's too big. But there was already code to not build > the PDU too big, it's just not taking the v3 header into account properly > (that's my best guess, at least). So now there are two different > mechanisms to send a "right-size" reply and they both don't work. Around > 5.8 release time I was working with Robert Story to fix this, but that > effort kind of petered out and Robert's work didn't make it into git. > > Can anyone get getbulk to work in the current 5.8-patches with SNMPv3? > > I've attached a test script with 504 failing test cases when I run it > against an unmodified V5-8-patches branch, and net-snmp leaks about a meg > of RAM during the test. This is an adaptation of my internal test to the > net-snmp test framework; the complete test would use all supported values > for -l, -a, -x but for now this is the simplest one using nanp. > > Thanks, > Bill > > > > > On Wed, Apr 10, 2019 at 10:25 AM Bart Van Assche < > bvass...@users.sourceforge.net> wrote: > >> This patch has been applied on the v5.8 and master branches. Thanks for >> the patch! >> ------------------------------ >> >> * [patches:#1388] <https://sourceforge.net/p/net-snmp/patches/1388/> >> patch for bug 2923: snmpv3 bulkget errors result in double free core dump* >> >> *Status:* open >> *Group:* backport-needed >> *Created:* Tue Mar 05, 2019 09:56 AM UTC by Sam Tannous >> *Last Updated:* Tue Mar 05, 2019 09:56 AM UTC >> *Owner:* nobody >> *Attachments:* >> >> - v3doublefree2.patch >> >> <https://sourceforge.net/p/net-snmp/patches/1388/attachment/v3doublefree2.patch> >> (14.2 kB; application/octet-stream) >> >> This is a patch for https://sourceforge.net/p/net-snmp/bugs/2923/ when >> almost any v3 bulkget >> error will cause a core dump of snmpd. >> ------------------------------ >> >> Sent from sourceforge.net because you indicated interest in >> https://sourceforge.net/p/net-snmp/patches/1388/ >> >> To unsubscribe from further messages, please visit >> https://sourceforge.net/auth/subscriptions/ >> >
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