diff options
| author | Jason Wessel <jason.wessel@windriver.com> | 2010-07-21 19:27:05 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-14 16:53:40 -0700 |
| commit | 79760cb772e9b80bac911c78caed52c7921f1bce (patch) | |
| tree | 780ba7fcad976dbd3e2773dcfece415c938dc01e | |
| parent | a98fa05b08e4226bcc1af32ee8c9ec8f1941333d (diff) | |
repair gdbstub to match the gdbserial protocol specification
commit fb82c0ff27b2c40c6f7a3d1a94cafb154591fa80 upstream.
The gdbserial protocol handler should return an empty packet instead
of an error string when ever it responds to a command it does not
implement.
The problem cases come from a debugger client sending
qTBuffer, qTStatus, qSearch, qSupported.
The incorrect response from the gdbstub leads the debugger clients to
not function correctly. Recent versions of gdb will not detach correctly as a result of this behavior.
Backport-request-by: Frank Pan <frankpzh@gmail.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | kernel/kgdb.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/kernel/kgdb.c b/kernel/kgdb.c index 9147a3190c9d..53dae4b215af 100644 --- a/kernel/kgdb.c +++ b/kernel/kgdb.c @@ -1001,10 +1001,8 @@ static void gdb_cmd_query(struct kgdb_state *ks) switch (remcom_in_buffer[1]) { case 's': case 'f': - if (memcmp(remcom_in_buffer + 2, "ThreadInfo", 10)) { - error_packet(remcom_out_buffer, -EINVAL); + if (memcmp(remcom_in_buffer + 2, "ThreadInfo", 10)) break; - } i = 0; remcom_out_buffer[0] = 'm'; @@ -1045,10 +1043,9 @@ static void gdb_cmd_query(struct kgdb_state *ks) pack_threadid(remcom_out_buffer + 2, thref); break; case 'T': - if (memcmp(remcom_in_buffer + 1, "ThreadExtraInfo,", 16)) { - error_packet(remcom_out_buffer, -EINVAL); + if (memcmp(remcom_in_buffer + 1, "ThreadExtraInfo,", 16)) break; - } + ks->threadid = 0; ptr = remcom_in_buffer + 17; kgdb_hex2long(&ptr, &ks->threadid); |