riscv, bpf: Fix potential NULL dereference
commit 27de809a upstream. The bpf_jit_binary_free() function requires a non-NULL argument. When the RISC-V BPF JIT fails to converge in NR_JIT_ITERATIONS steps, jit_data->header will be NULL, which triggers a NULL dereference. Avoid this by checking the argument, prior calling the function. Fixes: ca6cb544 ("riscv, bpf: Factor common RISC-V JIT code") Signed-off-by:Björn Töpel <bjorn@kernel.org> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/r/20211028125115.514587-1-bjorn@kernel.org Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
b529f88d
Please register or sign in to comment