Stephen Hemminger wrote:
I believe there are some unresolved memory management issues with HTB.
It looks like deleting the qdisc is causing some use after free or
memory corruption problems.
See:
http://bugzilla.kernel.org/show_bug.cgi?id=6681
I don't use HTB so I have no idea if this a new or old problem.
Hmm he's doing
crash (and oops) in command like
tc filter del dev ethX protocol ip parent 1:0 prio 5 handle X:XX:XX u32
is that valid - I've always reccomended to del root qdisc and start
again to change something.
I don't know if it's documented anywhere - none of the man pages in
iproute2 even mention del (OK remove is there) and tc-filters.8 is
referenced but not there.
It does say in tc.8 -
Filters have a three part ID, which is only needed when using a hashed
filter hierarchy, for which see tc-filters(8)
so maybe it's just tc/kernel failing to give rtnetlink error - which is
what I've seen before when trying to delete specific parts of trees.
man tc-htb doesn't even mention tc filter anything.
Andy.
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