diff options
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/fbsd-nat.c | 5 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index e7f3cc2..3752a3b 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2018-01-09 John Baldwin <jhb@FreeBSD.org> + * fbsd-nat.c (fbsd_pid_to_exec_file) [KERN_PROC_PATHNAME]: Return + NULL for an empty pathname. + +2018-01-09 John Baldwin <jhb@FreeBSD.org> + * fbsd-tdep.c (KVE_STRUCTSIZE, KVE_START, KVE_END, KVE_OFFSET) (KVE_FLAGS, KVE_PROTECTION, KVE_PATH, KINFO_VME_PROT_READ) (KINFO_VME_PROT_WRITE, KINFO_VME_PROT_EXEC, KINFO_VME_FLAG_COW) diff --git a/gdb/fbsd-nat.c b/gdb/fbsd-nat.c index ec4eed9..d0aaf89 100644 --- a/gdb/fbsd-nat.c +++ b/gdb/fbsd-nat.c @@ -63,7 +63,10 @@ fbsd_pid_to_exec_file (struct target_ops *self, int pid) mib[3] = pid; buflen = sizeof buf; if (sysctl (mib, 4, buf, &buflen, NULL, 0) == 0) - return buf; + /* The kern.proc.pathname.<pid> sysctl returns a length of zero + for processes without an associated executable such as kernel + processes. */ + return buflen == 0 ? NULL : buf; #endif xsnprintf (name, PATH_MAX, "/proc/%d/exe", pid); |