Hello I am trying to use both the unwind function on x86 in crash, and the fp extension. Both are not working for me. I did the following tests: (crash 7.0.9) crash/crash vmcore.201412161409 linux-3.2.64/vmlinux GNU gdb (GDB) 7.6 KERNEL: linux-3.2.64/vmlinux DUMPFILE: vmcore.201412161409 CPUS: 1 DATE: Tue Dec 16 15:09:46 2014 UPTIME: 00:00:46 LOAD AVERAGE: 0.05, 0.01, 0.01 TASKS: 55 NODENAME: debian RELEASE: 3.2.64 VERSION: #2 SMP Tue Dec 16 15:08:10 CET 2014 MACHINE: x86_64 (2392 Mhz) MEMORY: 383.5 MB PANIC: "[ 46.736164] Oops: 0002 [#1] SMP " (check log for details) PID: 1962 COMMAND: "tee" TASK: ffff88000e5e0000 [THREAD_INFO: ffff88000c8e8000] CPU: 0 STATE: TASK_RUNNING (PANIC) crash> bt PID: 1962 TASK: ffff88000e5e0000 CPU: 0 COMMAND: "tee" #0 [ffff88000c8e99f0] machine_kexec at ffffffff81038e0a #1 [ffff88000c8e9a60] crash_kexec at ffffffff810b3a92 #2 [ffff88000c8e9b30] oops_end at ffffffff816427e8 #3 [ffff88000c8e9b60] no_context at ffffffff81635d6f #4 [ffff88000c8e9bc0] __bad_area_nosemaphore at ffffffff81635f49 #5 [ffff88000c8e9c20] bad_area at ffffffff81635fc2 #6 [ffff88000c8e9c50] do_page_fault at ffffffff81645454 #7 [ffff88000c8e9d60] do_async_page_fault at ffffffff81644b75 #8 [ffff88000c8e9d80] async_page_fault at ffffffff81641de5 [exception RIP: sysrq_handle_crash+22] RIP: ffffffff813cad46 RSP: ffff88000c8e9e38 RFLAGS: 00010092 RAX: 0000000000000010 RBX: 0000000000000063 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: 0000000000000082 RDI: 0000000000000063 RBP: ffff88000c8e9e38 R8: 0000000000000000 R9: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81c725e0 R13: 0000000000000286 R14: 0000000000000007 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #9 [ffff88000c8e9e40] __handle_sysrq at ffffffff813cb461 #10 [ffff88000c8e9e80] write_sysrq_trigger at ffffffff813cb51a #11 [ffff88000c8e9eb0] proc_reg_write at ffffffff811d60e2 #12 [ffff88000c8e9f00] vfs_write at ffffffff81176053 #13 [ffff88000c8e9f30] sys_write at ffffffff8117637a #14 [ffff88000c8e9f80] sysenter_dispatch at ffffffff8164bc70 RIP: 00000000f775e430 RSP: 00000000ffe6a720 RFLAGS: 00000296 RAX: 0000000000000004 RBX: ffffffff8164bc70 RCX: 00000000ffe6a81c RDX: 0000000000000002 RSI: 0000000000000002 RDI: 00000000ffe6a81c RBP: 00000000ffe6a758 R8: 0000000000000000 R9: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 ORIG_RAX: 0000000000000004 CS: 0023 SS: 002b crash> set unwind on unwind: on crash> bt PID: 1962 TASK: ffff88000e5e0000 CPU: 0 COMMAND: "tee" #0 [ffff88000c8e99f0] machine_kexec at ffffffff81038e0a RIP: 00000000f775e430 RSP: 00000000ffe6a720 RFLAGS: 00000296 RAX: 0000000000000004 RBX: ffffffff8164bc70 RCX: 00000000ffe6a81c RDX: 0000000000000002 RSI: 0000000000000002 RDI: 00000000ffe6a81c RBP: 00000000ffe6a758 R8: 0000000000000000 R9: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000000 ORIG_RAX: 0000000000000004 CS: 0023 SS: 002b crash> -> no functions no parameters ------------------------------------------------------------------------------------------------------------- crash> extend crash/extensions/fp.so ./crash/extensions/fp.so: shared object loaded crash> fp ................. -> no functions no parameters Did I anything wrong?