diff options
Diffstat (limited to 'tapsets.cxx')
| -rw-r--r-- | tapsets.cxx | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tapsets.cxx b/tapsets.cxx index 409d909a..7755d794 100644 --- a/tapsets.cxx +++ b/tapsets.cxx @@ -6881,14 +6881,18 @@ uprobe_derived_probe_group::emit_module_decls (systemtap_session& s) s.op->newline(); s.op->newline() << "static int stap_uprobe_vmchange_found (struct stap_task_finder_target *tgt, struct task_struct *tsk, int map_p, char *vm_path, unsigned long vm_start, unsigned long vm_end, unsigned long vm_pgoff) {"; s.op->newline(1) << "struct stap_uprobe_spec *sups = container_of(tgt, struct stap_uprobe_spec, finder);"; - s.op->newline() << "printk (KERN_INFO \"vmchange pid %d map_p %d path %s vms %p vme %p vmp %p\\n\", tsk->tgid, map_p, vm_path, (void*) vm_start, (void*) vm_end, (void*) vm_pgoff);"; - s.op->newline() << "printk (KERN_INFO \"sups %p pp %s path %s address %p\\n\", sups, sups->pp, sups->pathname ?: \"\", (void*) sups->address);"; // 1 - shared libraries' executable segments load from offset 0 - ld.so convention s.op->newline() << "if (vm_pgoff != 0) return 0;"; // 2 - the shared library we're interested in s.op->newline() << "if (vm_path == NULL || strcmp (vm_path, sups->pathname)) return 0;"; // 3 - probe address within the mapping limits; test should not fail - s.op->newline() << "if (vm_end >= sups->address) return 0;"; + s.op->newline() << "if (vm_end <= vm_start + sups->address) return 0;"; + + s.op->newline() << "#ifdef DEBUG_TASK_FINDER_VMA"; + s.op->newline() << "printk (KERN_INFO \"vmchange pid %d map_p %d path %s vms %p vme %p vmp %p\\n\", tsk->tgid, map_p, vm_path, (void*) vm_start, (void*) vm_end, (void*) vm_pgoff);"; + s.op->newline() << "printk (KERN_INFO \"sups %p pp %s path %s address %p\\n\", sups, sups->pp, sups->pathname ?: \"\", (void*) sups->address);"; + s.op->newline() << "#endif"; + s.op->newline(0) << "return stap_uprobe_change (tsk, map_p, vm_start, sups);"; s.op->newline(-1) << "}"; s.op->assert_0_indent(); |