Hello at all, I am started with kallsyms in order to debug my kernel deadlock and I don't understand at all the output, that are some lines of the calltrace: [ 462.125000] Call Trace: [ 462.128000] [<80019440>] show_stack+0x48/0x78 [ 462.132000] [<8014e680>] showacpu+0xc4/0xf4 [ 462.137000] [<8014e6c4>] sysrq_handle_showallcpus+0x14/0x50 [ 462.142000] [<8014e318>] __handle_sysrq+0xd4/0x1ac [ 462.147000] [<8019e3dc>] bcm63xx_int+0x1b0/0x2f4 [ 462.152000] [<80062a74>] handle_IRQ_event+0xb8/0x4c0 [ 462.157000] [<80064f24>] handle_level_irq+0xd4/0x148 [ 462.162000] [<80011870>] plat_irq_dispatch+0x224/0x284 What do mean the couple of addresses like 0x224/0x284 ? I used to decode address by hands and what I expected is a single offset inside the function, but there I can see two address. Many thanks for your help, I am struggling and I am really frustrated!:-( Pietro.