Re: [PATCH v5 07/13] mips: Remove duplicated syscallnr.sh

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Low] The MIPS kernel build fails because an empty, unquoted Make variable causes `scripts/syscallnr.sh` to misparse its arguments.
--

--- Patch [7]: [PATCH v5 07/13] mips: Remove duplicated syscallnr.sh ---
commit 877d5f006e4ab42c99a338fbffa9cb65343bea2e
Author: André Almeida <andrealmeid@igalia.com>

mips: Remove duplicated syscallnr.sh

This commit removes the MIPS-specific syscallnr.sh script and switches to
using the common script in scripts/syscallnr.sh for generating syscall numbers.

> diff --git a/arch/mips/kernel/syscalls/Makefile b/arch/mips/kernel/syscalls/Makefile
> index 56f6f093bb88e..69adc21483edf 100644
> --- a/arch/mips/kernel/syscalls/Makefile
> +++ b/arch/mips/kernel/syscalls/Makefile
> @@ -5,16 +5,17 @@ uapi := arch/$(SRCARCH)/include/generated/uapi/asm
>  $(shell mkdir -p $(uapi) $(kapi))
>  
>  syshdr := $(srctree)/scripts/syscallhdr.sh
> -sysnr := $(src)/syscallnr.sh
> +sysnr := $(srctree)/scripts/syscallnr.sh
>  systbl := $(srctree)/scripts/syscalltbl.sh
>  
>  quiet_cmd_syshdr = SYSHDR  $@
>        cmd_syshdr = $(CONFIG_SHELL) $(syshdr) --offset __NR_Linux $< $@
>  
>  quiet_cmd_sysnr = SYSNR   $@
> -      cmd_sysnr = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@'		\
> -		  '$(sysnr_abis_$(basetarget))'			\
> -		  '$(sysnr_pfx_$(basetarget))'
> +      cmd_sysnr = $(CONFIG_SHELL) $(sysnr) \
> +		  --prefix $(sysnr_pfx_$(basetarget))_Linux_ \
> +		  --abis $(sysnr_abis_$(basetarget)) \

[Severity: Low]
Does this break the build when $(sysnr_abis_$(basetarget)) evaluates to an
empty string?

Because $(sysnr_abis_$(basetarget)) is unquoted, if it is empty, the shell
command becomes:

  --abis $< $@

This causes scripts/syscallnr.sh to consume the input file $< as the argument
to --abis, leaving only the output file $@ as a positional argument. Since the
script expects exactly two positional arguments, the script's parameter count
check would fail and terminate with a usage error.

> +		  $< $@
>  
>  quiet_cmd_systbl = SYSTBL  $@
>        cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260812-tonyk-syscall_table-v5-0-3d383927c609@igalia.com?part=7