Linux kernel 3.4.4 and 3.4.7 panic
Hi All,
I've character driver for PCIe based DMA and it is working fine till kernel version number 3.3.7 on fedora 16. But when I updated my kernel to 3.4.4, I am getting oops message while doing memory mapping for DMA. Oops messages are coming at function dma_map_single. The message which I am getting is: Kernel BUG at lib/iommu-helper.c:13 Invalid Opcode and then Stack Dump..... Same thing happening on kernel 3.4.7. Any help will be highly appreciated. Thanks in advance. |
This is caused by:
Code:
BUG_ON(!is_power_of_2(boundary_size)); |
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