From 1f73ad3e8d755dbec52fcec98618a7ce4de12af2 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Wed, 11 Nov 2020 15:53:19 +0100 Subject: [PATCH] powerpc/mm: print warning in arch_remove_linear_mapping() Let's print a warning similar to in arch_add_linear_mapping() instead of WARN_ON_ONCE() and eventually crashing the kernel. Signed-off-by: David Hildenbrand Reviewed-by: Oscar Salvador Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201111145322.15793-6-david@redhat.com --- arch/powerpc/mm/mem.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index ca5c4b54c366..c5755b9efb64 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -150,7 +150,9 @@ void __ref arch_remove_linear_mapping(u64 start, u64 size) mutex_lock(&linear_mapping_mutex); ret = remove_section_mapping(start, start + size); mutex_unlock(&linear_mapping_mutex); - WARN_ON_ONCE(ret); + if (ret) + pr_warn("Unable to remove linear mapping for 0x%llx..0x%llx: %d\n", + start, start + size, ret); /* Ensure all vmalloc mappings are flushed in case they also * hit that section of memory -- 2.11.0