Re: [PATCH 6.18 000/212] 6.18.20-rc1 review

Guenter Roeck
2026-03-30T08:54:38Z

Hi,

On 3/23/26 06:43, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.18.20 release.
> There are 212 patches in this series, all will be posted as a response
> to this one. If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Wed, 25 Mar 2026 13:44:33 +0000.
> Anything received after that time might be too late.
>

um:defconfig has failed to build since v6.18.17.

Is there any interest in supporting it in this branch ? If so,
upstream commit aa7387e79a5c ("unwind_user/x86: Fix arch=um build")
might help, but I did not test it.

Thanks,
Guenter

---
Build reference: v6.18.20
Compiler version: x86_64-linux-gcc (GCC) 14.3.0
Assembler version: GNU assembler (GNU Binutils) 2.44

Building um:defconfig ... failed
--------------
Error log:
In file included from include/linux/unwind_user.h:6,
from include/linux/unwind_deferred.h:6,
from kernel/fork.c:108:
arch/x86/include/asm/unwind_user.h: In function 'unwind_user_word_size':
arch/x86/include/asm/unwind_user.h:23:17: error: 'struct pt_regs' has no member named 'flags'
23 | if (regs->flags & X86_VM_MASK)
| ^~
arch/x86/include/asm/unwind_user.h:23:27: error: 'X86_VM_MASK' undeclared (first use in this function)
23 | if (regs->flags & X86_VM_MASK)
| ^~~~~~~~~~~
arch/x86/include/asm/unwind_user.h:23:27: note: each undeclared identifier is reported only once for each function it appears in
arch/x86/include/asm/unwind_user.h:26:14: error: implicit declaration of function 'user_64bit_mode' [-Wimplicit-function-declaration]
26 | if (!user_64bit_mode(regs))
| ^~~~~~~~~~~~~~~
make[4]: *** [scripts/Makefile.build:287: kernel/fork.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [scripts/Makefile.build:544: kernel] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [Makefile:2021: .] Error 2
make[1]: *** [Makefile:248: __sub-make] Error 2
make: *** [Makefile:248: __sub-make] Error 2
--------------