Author: jhb
Date: Mon Oct 5 21:36:53 2015
New Revision: 288902
URL: https://svnweb.freebsd.org/changeset/base/288902
Log:
Include additional info in ptrace(2) KTR traces:
- The new PC value and signal passed to PT_CONTINUE, PT_DETACH, PT_SYSCALL,
and PT_TO_SC[EX].
- The system call code returned via PT_LWPINFO.
MFC after: 1 week
Modified:
head/sys/kern/sys_process.c
Modified: head/sys/kern/sys_process.c
==============================================================================
--- head/sys/kern/sys_process.c Mon Oct 5 21:29:17 2015 (r288901)
+++ head/sys/kern/sys_process.c Mon Oct 5 21:36:53 2015 (r288902)
@@ -928,25 +928,29 @@ kern_ptrace(struct thread *td, int req,
switch (req) {
case PT_TO_SCE:
p->p_stops |= S_PT_SCE;
- CTR2(KTR_PTRACE,
- "PT_TO_SCE: pid %d, stops = %#x", p->p_pid,
- p->p_stops);
+ CTR4(KTR_PTRACE,
+ "PT_TO_SCE: pid %d, stops = %#x, PC = %#lx, sig = %d",
+ p->p_pid, p->p_stops,
+ (u_long)(uintfptr_t)addr, data);
break;
case PT_TO_SCX:
p->p_stops |= S_PT_SCX;
- CTR2(KTR_PTRACE,
- "PT_TO_SCX: pid %d, stops = %#x", p->p_pid,
- p->p_stops);
+ CTR4(KTR_PTRACE,
+ "PT_TO_SCX: pid %d, stops = %#x, PC = %#lx, sig = %d",
+ p->p_pid, p->p_stops,
+ (u_long)(uintfptr_t)addr, data);
break;
case PT_SYSCALL:
p->p_stops |= S_PT_SCE | S_PT_SCX;
- CTR2(KTR_PTRACE,
- "PT_SYSCALL: pid %d, stops = %#x", p->p_pid,
- p->p_stops);
+ CTR4(KTR_PTRACE,
+ "PT_SYSCALL: pid %d, stops = %#x, PC = %#lx, sig = %d",
+ p->p_pid, p->p_stops,
+ (u_long)(uintfptr_t)addr, data);
break;
case PT_CONTINUE:
- CTR1(KTR_PTRACE,
- "PT_CONTINUE: pid %d", p->p_pid);
+ CTR3(KTR_PTRACE,
+ "PT_CONTINUE: pid %d, PC = %#lx, sig = %d",
+ p->p_pid, (u_long)(uintfptr_t)addr, data);
break;
}
break;
@@ -969,11 +973,12 @@ kern_ptrace(struct thread *td, int req,
proc_reparent(p, pp);
if (pp == initproc)
p->p_sigparent = SIGCHLD;
- CTR2(KTR_PTRACE,
- "PT_DETACH: pid %d reparented to pid %d",
- p->p_pid, pp->p_pid);
+ CTR3(KTR_PTRACE,
+ "PT_DETACH: pid %d reparented to pid %d, sig %d",
+ p->p_pid, pp->p_pid, data);
} else
- CTR1(KTR_PTRACE, "PT_DETACH: pid %d", p->p_pid);
+ CTR2(KTR_PTRACE, "PT_DETACH: pid %d, sig %d",
+ p->p_pid, data);
p->p_oppid = 0;
p->p_stops = 0;
@@ -1226,10 +1231,10 @@ kern_ptrace(struct thread *td, int req,
if (wrap32)
ptrace_lwpinfo_to32(pl, pl32);
#endif
- CTR5(KTR_PTRACE,
- "PT_LWPINFO: tid %d (pid %d) event %d flags %#x child pid %d",
+ CTR6(KTR_PTRACE,
+ "PT_LWPINFO: tid %d (pid %d) event %d flags %#x child pid %d syscall %d",
td2->td_tid, p->p_pid, pl->pl_event, pl->pl_flags,
- pl->pl_child_pid);
+ pl->pl_child_pid, pl->pl_syscall_code);
break;
case PT_GETNUMLWPS:
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