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authorJason Wessel <jason.wessel@windriver.com>2012-03-16 23:20:41 +0400
committerJason Wessel <jason.wessel@windriver.com>2012-03-23 00:07:15 +0400
commit2366e047840e33928803c0442176fb3991423da8 (patch)
tree6c1488ee97a24c85dd4f2ddb1a06a5694de6e2f2 /kernel/debug/gdbstub.c
parent9fbe465efc76044dd87afe764db5464ae61aeabc (diff)
downloadlinux-2366e047840e33928803c0442176fb3991423da8.tar.xz
kgdb,debug-core,gdbstub: Hook the reboot notifier for debugger detach
The gdbstub and kdb should get detached if the system is rebooting. Calling gdbstub_exit() will set the proper debug core state and send a message to any debugger that is connected to correctly detach. An attached debugger will receive the exit code from include/linux/reboot.h based on SYS_HALT, SYS_REBOOT, etc... Reported-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel/debug/gdbstub.c')
-rw-r--r--kernel/debug/gdbstub.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c
index 5a155742ae96..ce615e064482 100644
--- a/kernel/debug/gdbstub.c
+++ b/kernel/debug/gdbstub.c
@@ -1111,6 +1111,13 @@ void gdbstub_exit(int status)
unsigned char checksum, ch, buffer[3];
int loop;
+ if (!kgdb_connected)
+ return;
+ kgdb_connected = 0;
+
+ if (!dbg_io_ops || dbg_kdb_mode)
+ return;
+
buffer[0] = 'W';
buffer[1] = hex_asc_hi(status);
buffer[2] = hex_asc_lo(status);