https://bugzilla.kernel.org/show_bug.cgi?id=90601 kashyap <kashyap.desai@xxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kashyap.desai@xxxxxxx --- Comment #3 from kashyap <kashyap.desai@xxxxxxx> --- Merlin, 1.) Can you enable CONFIG_DMA_API_DEBUG in your kernel conf and send complete /var/log/messages along with back trace. 2.) >From existing logs I can figure out that crash happened at below place. static void intel_unmap_sg(struct device *dev, struct scatterlist *sglist, int nelems, enum dma_data_direction dir, struct dma_attrs *attrs) { intel_unmap(dev, sglist[0].dma_address); } sglist[0] is NULL and while accessing dma_address (which is 0x10th index as per below definition) struct scatterlist { #ifdef CONFIG_DEBUG_SG unsigned long sg_magic; #endif unsigned long page_link; unsigned int offset; unsigned int length; dma_addr_t dma_address; < -- 0x10th index #ifdef CONFIG_NEED_SG_DMA_LENGTH unsigned int dma_length; #endif }; Crash detail - [ 1005.899543] Hardware name: Supermicro X9DR7/E-(J)LN4F/X9DR7/E-(J)LN4F, BIOS 3.0a 09/10/2013 [ 1005.899971] task: ffffffff8160a460 ti: ffffffff815f4000 task.ti: ffffffff815f4000 [ 1005.900401] RIP: 0010:[<ffffffff813db181>] [<ffffffff813db181>] intel_unmap_sg+0x1/0x10 ~ kashyap -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
