From 0337b7ebfcb8efb4ea0a9f2b2f284217a1c0e62d Mon Sep 17 00:00:00 2001
From: Andy Lutomirski <luto@kernel.org>
Date: Mon, 25 Nov 2019 22:37:44 -0800
Subject: [PATCH] x86/traps: die() instead of panicking on a double fault
A double fault has a decent chance of being recoverable by killing
the offending thread. Use die() so that we at least try to recover.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/kernel/traps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index a9b16c3a933d..05da6b5b167b 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -427,7 +427,7 @@ dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code, unsign
#endif
pr_emerg("PANIC: double fault, error_code: 0x%lx\n", error_code);
- show_regs(regs);
+ die("double fault", regs, error_code);
panic("Machine halted.");
}
#endif