Unverified Commit 9a6e7af0 authored by Vincent Chen's avatar Vincent Chen Committed by Palmer Dabbelt
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riscv: Support BUG() in kernel module 



The kernel module is loaded into vmalloc region which is located below
to the PAGE_OFFSET. Hence the condition, pc < PAGE_OFFSET, in the
is_valid_bugaddr() will filter out all trap exceptions triggered
by kernel module. To support BUG() in kernel module, the condition is
changed to pc < VMALLOC_START.

Signed-off-by: default avatarVincent Chen <vincentc@andestech.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarPalmer Dabbelt <palmer@sifive.com>
parent ee72e0e7

arch/riscv/kernel/traps.c

+1 −1
Original line number Diff line number Diff line
@@ -156,7 +156,7 @@ int is_valid_bugaddr(unsigned long pc) 
{

	bug_insn_t insn;



	if (pc < PAGE_OFFSET)

	if (pc < VMALLOC_START)

		return 0;

	if (probe_kernel_address((bug_insn_t *)pc, insn))

		return 0;