diff options
| author | Jason Wessel <jason.wessel@windriver.com> | 2010-07-21 19:27:05 -0500 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-03-14 10:57:05 -0400 |
| commit | ebe451b0dd80704dc56e06c35690a47d26be149b (patch) | |
| tree | 1dcb8d1883ac225cbba531214c48922c4d9a14fe /kernel | |
| parent | 387b3e0a0ce26408e764e7bf268e8d98c4a660b7 (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.
[PG: file renamed by time of fb82c0ff kgdb.c --> debug/gdbstub.c]
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'kernel')
| -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 11f3515ca83f..0887213f842d 100644 --- a/kernel/kgdb.c +++ b/kernel/kgdb.c @@ -976,10 +976,8 @@ 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'; @@ -1020,10 +1018,9 @@ 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); |