[ovs-git] Open vSwitch: netdev-linux: Fix self-deadlocks in traffic control code. (master)

dev at openvswitch.org dev at openvswitch.org
Fri Aug 16 21:25:49 UTC 2013


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- Log -----------------------------------------------------------------
commit 73371c09f9f5a1a8565b2b9bd3f4c49197fc595c
Diffs: http://openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=73371c09f9f5a1a8565b2b9bd3f4c49197fc595c
Author: Ben Pfaff <blp at nicira.com>
		
netdev-linux: Fix self-deadlocks in traffic control code.
		
htb_parse_qdisc_details__(), which is called with the netdev mutex, called
netdev_get_mtu(), which tried to reacquire the mutex and thus deadlocked.
This commit fixes the problem and similar problems in
htb_parse_class_details__() and hfsc_parse_qdisc_details__().

Bug #19180.
Reported-by: Dhaval Badiani <dbadiani at vmware.com>
Signed-off-by: Ben Pfaff <blp at nicira.com>
Acked-by: Andy Zhou <azhou at nicira.com>


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Summary of changes:
 lib/netdev-linux.c |   41 +++++++++++++++++++++++++++--------------
 1 file changed, 27 insertions(+), 14 deletions(-)


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