linux-next: build failure after merge of the arm tree

Stephen Rothwell
2024-11-12T23:46:17Z

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Hi all,

After merging the arm tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

arch/arm/mm/ioremap.c: In function 'sync_vmalloc_pgds':
arch/arm/mm/ioremap.c:130:46: error: implicit declaration of function 'kasan_mem_to_shadow'; did you mean 'kmsan_init_shadow'? [-Wimplicit-function-declaration]
130 | sync_pgds(mm, (unsigned long)kasan_mem_to_shadow(
| ^~~~~~~~~~~~~~~~~~~
| kmsan_init_shadow

Caused by commit

15c0b4cb0223 ("ARM: 9427/1: mm: Fix stack recursion caused by KASAN")

kasan_mem_to_shadow() is only defined when CONFIG_KASAN_GENERIC or
CONFIG_KASAN_SW_TAGS is set.

$ grep CONFIG_KASAN arm_multi_v7_defconfig/.config
# CONFIG_KASAN is not set

I have used the arm tree from next-20241112 for today.

--
Cheers,
Stephen Rothwell

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