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Description of problem: The kernel panic occurs if a bridge device is connected with physical NIC and UDP packets are transmitted via the bridge device. The kernel panic occurs when all the following conditions consist: - The kernel version is RHEL6(2.6.32-71.xx.el6). - The NETIF_F_HW_CSUM of the physical device connected with the bridge device is available. - The udp-fragmentation-offload function of the bridge device is available(ON). - The udp-fragmentation-offload function of the physical NIC is unavailable(OFF). - IPv6 protocol - The size of the UDP datagram exceeds MTU. (fragmentation is necessary) The system configuration: Test_program ---> UDP/IP ---> bridge(br0) ---> NIC(eth0) ---> network Version-Release number of selected component (if applicable): kernel-2.6.32-71.el6 How reproducible: Always with the reproducer Steps to Reproduce: 1. gcc -o udp6_send udp6_send.c 2. run reproducer.sh (put udp6_send in the same directory). Actual results: Kernel Panic occurs. Expected results: Kernel Panic doesn't occur. Additional info:
*** This bug has been marked as a duplicate of bug 698170 ***