RISC-V: Avoid dereferening NULL regs in die()
authorPalmer Dabbelt <palmer@rivosinc.com>
Tue, 20 Sep 2022 20:00:37 +0000 (13:00 -0700)
committerPalmer Dabbelt <palmer@rivosinc.com>
Thu, 13 Oct 2022 05:02:49 +0000 (22:02 -0700)
commitf2913d006fcdb61719635e093d1b5dd0dafecac7
tree219df1e8c09f520d2965147077145bf2b902614e
parent1b5964b2f9f67ded7ce522870698ffdd4c889255
RISC-V: Avoid dereferening NULL regs in die()

I don't think we can actually die() without a regs pointer, but the
compiler was warning about a NULL check after a dereference.  It seems
prudent to just avoid the possibly-NULL dereference, given that when
die()ing the system is already toast so who knows how we got there.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220920200037.6727-1-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
arch/riscv/kernel/traps.c