kdb: Remove stack dump when entering kgdb due to NMI

Issuing a stack dump feels ergonomically wrong when entering due to NMI.

Entering due to NMI is normally a reaction to a user request, either the
NMI button on a server or a "magic knock" on a UART. Therefore the
backtrace behaviour on entry due to NMI should be like SysRq-g (no stack
dump) rather than like oops.

Note also that the stack dump does not offer any information that
cannot be trivial retrieved using the 'bt' command.

Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 60f6bb817f70..0a22f455060a 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -1247,7 +1247,6 @@ static int kdb_local(kdb_reason_t reason, int error, struct pt_regs *regs,
                 kdb_printf("due to NonMaskable Interrupt @ "
                            kdb_machreg_fmt "\n",
                            instruction_pointer(regs));
-                kdb_dumpregs(regs);
                 break;
         case KDB_REASON_SSTEP:
         case KDB_REASON_BREAK: