On Thu, Jun 17, 2021 at 06:19:14PM +0530, Naresh Kamboju wrote:

The git bisect found the first bad commit,
The first bad commit:
commit 3abbdfde5a6588a92209cd8b131769b8058e7c21
Author: Heiko Carstens [off-list ref]
Date:   Wed Jun 9 22:59:13 2021 +0200
    s390/bitops: use register pair instead of register asm

    Get rid of register asm statement and use a register pair.
    This allows the compiler to allocate registers on its own.

    Signed-off-by: Heiko Carstens [off-list ref]
    Signed-off-by: Vasily Gorbik [off-list ref]
 arch/s390/include/asm/bitops.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
Previous HEAD position was 3abbdfde5a65 s390/bitops: use register pair
instead of register asm
HEAD is now at 7d9c6b8147bd Add linux-next specific files for 20210617

You need clang-13 development version which contains commit
d058262b1471 ("[SystemZ] Support i128 inline asm operands.").
Every older clang version won't be able to complile the kernel for
s390 anymore.

This is intended and won't be fixed.