On Mon, 8 Jun 2020 13:38:17 -0700, Nick Desaulniers wrote:
> Will reported a UBSAN warning:
>
> UBSAN: null-ptr-deref in arch/arm64/kernel/smp.c:596:6
> member access within null pointer of type 'struct acpi_madt_generic_interrupt'
> CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-rc6-00124-g96bc42ff0a82 #1
> Call trace:
> dump_backtrace+0x0/0x384
> show_stack+0x28/0x38
> dump_stack+0xec/0x174
> handle_null_ptr_deref+0x134/0x174
> __ubsan_handle_type_mismatch_v1+0x84/0xa4
> acpi_parse_gic_cpu_interface+0x60/0xe8
> acpi_parse_entries_array+0x288/0x498
> acpi_table_parse_entries_array+0x178/0x1b4
> acpi_table_parse_madt+0xa4/0x110
> acpi_parse_and_init_cpus+0x38/0x100
> smp_init_cpus+0x74/0x258
> setup_arch+0x350/0x3ec
> start_kernel+0x98/0x6f4
>
> [...]
Applied to arm64 (for-next/core), thanks!
[1/1] arm64: acpi: fix UBSAN warning
https://git.kernel.org/arm64/c/a194c33f45f8
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
