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Subject[PATCH 1/3] x86/mm/64: Remove the last VM_BUG_ON from the TLB code
Date
Let's avoid hard-to-diagnose crashes in the future.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
---
arch/x86/mm/tlb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 658bf0090565..7db23f9f804e 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -147,8 +147,8 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
this_cpu_write(cpu_tlbstate.is_lazy, false);

if (real_prev == next) {
- VM_BUG_ON(this_cpu_read(cpu_tlbstate.ctxs[prev_asid].ctx_id) !=
- next->context.ctx_id);
+ VM_WARN_ON(this_cpu_read(cpu_tlbstate.ctxs[prev_asid].ctx_id) !=
+ next->context.ctx_id);

/*
* We don't currently support having a real mm loaded without
--
2.13.6
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