here is a backtrace for the panic: panic: ieee80211_mesh_rt_add: adding self to the routing table KDB: enter: panic [ thread pid 0 tid 100030 ] Stopped at kdb_enter+0x50: lui at,0x804e db> bt Tracing pid 0 tid 100030 td 0xc08952f0 db_trace_thread+30 (?,?,?,?) ra 8009b510 sp c76275e8 sz 24 8009b3f4+11c (0,?,ffffffff,?) ra 8009aaf8 sp c7627600 sz 32 8009a764+394 (?,?,?,?) ra 8009ac88 sp c7627620 sz 168 db_command_loop+78 (?,?,?,?) ra 8009d368 sp c76276c8 sz 24 8009d260+108 (?,?,?,?) ra 801ead50 sp c76276e0 sz 424 kdb_trap+108 (?,?,?,?) ra 803ad33c sp c7627888 sz 32 trap+c88 (?,?,?,?) ra 803a51d0 sp c76278a8 sz 168 MipsKernGenException+134 (0,a,80653fe4,109) ra 801eafd8 sp c7627950 sz 200 kdb_enter+50 (?,?,?,?) ra 801b3ec4 sp c7627a18 sz 24 panic+f8 (?,803f0dc0,0,df) ra 802aa5dc sp c7627a30 sz 40 ieee80211_mesh_rt_add+74 (?,?,?,?) ra 802a1210 sp c7627a58 sz 40 802a05b4+c5c (?,c0c85000,?,?) ra 8028a540 sp c7627a80 sz 336 ieee80211_recv_action+1b4 (?,?,?,?) ra 802ab868 sp c7627bd0 sz 24 802aafd4+894 (?,?,?,61) ra 800aaf0c sp c7627be8 sz 176 800aaec4+48 (?,?,?,?) ra 802add54 sp c7627c98 sz 56 802acc90+10c4 (?,?,?,ffffffa0) ra 800a8d20 sp c7627cd0 sz 200 800a8794+58c (?,?,?,?) ra 801f8284 sp c7627d98 sz 104 801f81cc+b8 (?,?,?,?) ra 801f8928 sp c7627e00 sz 40 taskqueue_thread_loop+68 (?,?,?,?) ra 801892a0 sp c7627e28 sz 48 fork_exit+b0 (?,?,?,?) ra 803b1c20 sp c7627e58 sz 40 fork_trampoline+10 (?,?,?,?) ra 0 sp c7627e80 sz 0 pid 0 db>
br, On Tue, Feb 15, 2011 at 1:00 PM, Monthadar Al Jaberi <montha...@gmail.com> wrote: > Hej, > > I found that a panic can be generated when having a couple of > ieee80211s nodes in a line topology with one of them being a ROOT > node. A ping from ROOT in a newly started nodes causes a panic: > panic: ieee80211_mesh_rt_add: adding self to the routing table > KDB: enter: panic > [ thread pid 0 tid 100030 ] > Stopped at kdb_enter+0x50: lui at,0x804e > db> > > This is because we receive a copy of our own generated > IEEE80211_ELEMID_MESHPREP packet from our neighbor node. > I added check code in the begining of hwmp_recv_prep(...) similar to > the check code found in hwmp_recv_preq(...). Here is a diff output: > > --- freebsd/head/sys/net80211/ieee80211_hwmp.c 2010-11-03 > 09:29:25.023610380 +0000 > +++ src/head-current/sys/net80211/ieee80211_hwmp.c 2011-02-15 > 10:06:02.526163874 +0000 > @@ -28,7 +28,7 @@ > */ > #include <sys/cdefs.h> > #ifdef __FreeBSD__ > -__FBSDID("$FreeBSD$"); > +__FBSDID("$FreeBSD: src/sys/net80211/ieee80211_hwmp.c,v 1.4.2.7.2.1 > 2010/12/21 17:09:25 kensmith Exp $"); > #endif > > /* > @@ -951,6 +951,12 @@ > if (ni == vap->iv_bss || > ni->ni_mlstate != IEEE80211_NODE_MESH_ESTABLISHED) > return; > + /* > + * Ignore PREPs from us. Could happen because someone forward it > + * back to us. > + */ > + if (IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_targetaddr)) > + return; > if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, prep->prep_origaddr) && > !(ms->ms_flags & IEEE80211_MESHFLAGS_FWD)) > return; > > -- > //Monthadar Al Jaberi > -- //Monthadar Al Jaberi _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"