Hi David and Frank, David Smith <dsm...@redhat.com> writes: > The whitelist test is pretty old, and should probably be removed. The > stuff in scripts/kprobes_test is much closer to what I think you want, > but of course it doesn't use systemtap, it tests "raw" kprobes. It > probably wouldn't be that difficult to modify > scripts/kprobes_test/gen_code.py to produce a systemtap module instead > of a "raw" kprobes module.
thanks for the pointer. I forked gen_code_all.sh to a version that incrementally adds new probes to the set until the kernel crashes. The log looks like: round 1: adding run_init_process to the set round 2: adding _stext to the set round 3: adding hypercall_page to the set round 4: adding arch_local_save_flags to the set round 5: adding arch_local_irq_disable to the set round 6: adding arch_local_irq_enable to the set round 7: adding run_init_process to the set round 1: adding _stext to the set round 2: adding hypercall_page to the set round 3: adding arch_local_save_flags to the set round 4: adding arch_local_irq_disable to the set round 5: adding arch_local_irq_enable to the set round 6: adding run_init_process to the set round 7: adding init_post to the set round 8: adding do_one_initcall to the set round 9: adding match_dev_by_uuid to the set round 10: adding name_to_dev_t to the set round 11: adding arch_local_irq_restore to the set round 12: adding arch_local_irq_disable to the set round 13: adding native_read_cr4 to the set round 14: adding native_read_cr4_safe to the set round 15: adding native_wbinvd to the set round 16: adding native_read_msr_safe to the set round 17: adding native_read_pmc to the set round 18: adding cpuid to the set round 19: adding pte_pfn to the set round 20: adding pfn_pte to the set round 21: adding native_store_gdt to the set round 22: adding native_store_idt to the set round 23: adding xen_mc_batch to the set round 24: adding clamp_max_cpus to the set round 25: adding xen_cpuid to the set round 26: adding xen_set_debugreg to the set After that I get [440390.108932] Unrecoverable kprobe detected at ffffffff8100311e. [440390.108936] Dumping kprobe: [440390.108939] Name: xen_set_debugreg [440390.108940] Address: ffffffff8100311e [440390.108940] Offset: 0 [440390.108949] ------------[ cut here ]------------ [440390.108952] kernel BUG at /tmp/buildd/linux-2.6-3.0.0/debian/build/source_amd64_none/arch/x86/kernel/kprobes.c:523! and the machine is dead. Can we please blacklist these in Linux or systemtap? -Timo -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
