From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> From: Nicholas Piggin <npiggin@xxxxxxxxx> [ Upstream commit 11cb0a25f71818ca7ab4856548ecfd83c169aa4d ] If an unrecoverable system reset hits in process context, the system does not have to panic. Similar to machine check, call nmi_exit() before die(). Signed-off-by: Nicholas Piggin <npiggin@xxxxxxxxx> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20210130130852.2952424-26-npiggin@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/powerpc/kernel/traps.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 0f1a888c04a8..05c1aabad01c 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -360,8 +360,11 @@ void system_reset_exception(struct pt_regs *regs) die("Unrecoverable nested System Reset", regs, SIGABRT); #endif /* Must die if the interrupt is not recoverable */ - if (!(regs->msr & MSR_RI)) + if (!(regs->msr & MSR_RI)) { + /* For the reason explained in die_mce, nmi_exit before die */ + nmi_exit(); die("Unrecoverable System Reset", regs, SIGABRT); + } if (!nested) nmi_exit(); -- 2.30.1
