scripts/syscallhdr.sh: 77: [[: not found

:::::: 
:::::: Manual check reason: "bisect to a FBC not belonging to original linux-review patches: branch: linux-review/Andr-Almeida/syscalls-Create-unified-partial-table-for-all-archs/20260725-040333, commit: ee3a650b2d887e916d8d644af5416769b7f63f16"
:::::: 

BCC: [email protected]
CC: [email protected]
TO: "André Almeida" <[email protected]>
CC: 0day robot <[email protected]>

tree:   https://github.com/intel-lab-lkp/linux/commits/Andr-Almeida/syscalls-Create-unified-partial-table-for-all-archs/20260725-040333
head:   8c63d3ddb37ca9ef5da08071f85493dd0b281816
commit: ee3a650b2d887e916d8d644af5416769b7f63f16 syscalls: Add support for x86_x32 for the common syscall table
date:   11 days ago
:::::: branch date: 11 days ago
:::::: commit date: 11 days ago
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20260805/[email protected]/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260805/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

All errors (new ones prefixed by >>):

>> scripts/syscallhdr.sh: 77: [[: not found
>> scripts/syscallhdr.sh: 77: [[: not found
   scripts/syscallhdr.sh: 120: Syntax error: redirection unexpected
   make[3]: *** [arch/x86/entry/syscalls/Makefile:29: arch/x86/include/generated/uapi/asm/unistd_32.h] Error 2
>> scripts/syscallhdr.sh: 77: [[: not found
   scripts/syscallhdr.sh: 120: Syntax error: redirection unexpected
   scripts/syscallhdr.sh: 120: Syntax error: redirection unexpected
   make[3]: *** [arch/x86/entry/syscalls/Makefile:43: arch/x86/include/generated/uapi/asm/unistd_64.h] Error 2
   make[3]: *** [arch/x86/entry/syscalls/Makefile:39: arch/x86/include/generated/uapi/asm/unistd_x32.h] Error 2
   scripts/syscalltbl.sh: 100: Syntax error: redirection unexpected
   make[3]: *** [arch/x86/entry/syscalls/Makefile:52: arch/x86/include/generated/asm/syscalls_32.h] Error 2
   make[3]: Target 'all' not remade because of errors.
   make[2]: *** [arch/x86/Makefile:256: archheaders] Error 2
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

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