diff options
| author | Tim Bird <tim.bird@am.sony.com> | 2011-09-21 22:19:12 +0200 |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2012-03-22 21:07:16 +0100 |
| commit | b8adde8ddec9ff62a21564fa8020b5463e70d4de (patch) | |
| tree | 750515b98a74e80569148371754869956cea039d /kernel | |
| parent | kgdb,debug_core: add the ability to control the reboot notifier (diff) | |
| download | linux-b8adde8ddec9ff62a21564fa8020b5463e70d4de.tar.xz linux-b8adde8ddec9ff62a21564fa8020b5463e70d4de.zip | |
kdb: Avoid using dbg_io_ops until it is initialized
This fixes a bug with setting a breakpoint during kdb initialization
(from kdb_cmds). Any call to kdb_printf() before the initialization
of the kgdboc serial console driver (which happens much later during
bootup than kdb_init), results in kernel panic due to the use of
dbg_io_ops before it is initialized.
Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/debug/kdb/kdb_io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 4802eb5840e1..9b5f17da1c56 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -689,7 +689,7 @@ kdb_printit: if (!dbg_kdb_mode && kgdb_connected) { gdbstub_msg_write(kdb_buffer, retlen); } else { - if (!dbg_io_ops->is_console) { + if (dbg_io_ops && !dbg_io_ops->is_console) { len = strlen(kdb_buffer); cp = kdb_buffer; while (len--) { |