Subject: linux-next: build failure after merge of the mm tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 9 Jul 2024 18:40:04 +1000

Hi all,

After merging the mm tree, today's linux-next build (i386 defconfig)
failed like this:

lib/math/div64.c: In function 'mul_u64_u64_div_u64':
lib/math/div64.c:211:2: error: #error "unknown endianness"
  211 | #error "unknown endianness"
      |  ^~~~~
lib/math/div64.c:219:21: error: 'union <anonymous>' has no member named 'l'
  219 |         X.v = (u64)A.l * B.l;
      |                     ^
lib/math/div64.c:219:27: error: 'union <anonymous>' has no member named 'l'
  219 |         X.v = (u64)A.l * B.l;
      |                           ^
lib/math/div64.c:220:21: error: 'union <anonymous>' has no member named 'l'
  220 |         Y.v = (u64)A.l * B.h + X.h;
      |                     ^
lib/math/div64.c:220:27: error: 'union <anonymous>' has no member named 'h'
  220 |         Y.v = (u64)A.l * B.h + X.h;
      |                           ^
lib/math/div64.c:220:33: error: 'union <anonymous>' has no member named 'h'
  220 |         Y.v = (u64)A.l * B.h + X.h;
      |                                 ^
lib/math/div64.c:221:21: error: 'union <anonymous>' has no member named 'h'
  221 |         Z.v = (u64)A.h * B.h + Y.h;
      |                     ^
lib/math/div64.c:221:27: error: 'union <anonymous>' has no member named 'h'
  221 |         Z.v = (u64)A.h * B.h + Y.h;
      |                           ^
lib/math/div64.c:221:33: error: 'union <anonymous>' has no member named 'h'
  221 |         Z.v = (u64)A.h * B.h + Y.h;
      |                                 ^
lib/math/div64.c:222:21: error: 'union <anonymous>' has no member named 'h'
  222 |         Y.v = (u64)A.h * B.l + Y.l;
      |                     ^
lib/math/div64.c:222:27: error: 'union <anonymous>' has no member named 'l'
  222 |         Y.v = (u64)A.h * B.l + Y.l;
      |                           ^
lib/math/div64.c:222:33: error: 'union <anonymous>' has no member named 'l'
  222 |         Y.v = (u64)A.h * B.l + Y.l;
      |                                 ^
lib/math/div64.c:223:10: error: 'union <anonymous>' has no member named 'h'
  223 |         X.h = Y.l;
      |          ^
lib/math/div64.c:223:16: error: 'union <anonymous>' has no member named 'l'
  223 |         X.h = Y.l;
      |                ^
lib/math/div64.c:224:17: error: 'union <anonymous>' has no member named 'h'
  224 |         Z.v += Y.h;
      |                 ^

Caused by commit

  7a3c42cc4fc3 ("mul_u64_u64_div_u64: make it precise always")

from the mm-nonmm-unstable branch of the mm tree.

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell