Subject: [PATCH 0/2] arm64: Fix syzkaller splat in ioremap_prot()

From: Will Deacon <[email-masked]>
Date: Mon, 23 Feb 2026 22:10:09 +0000

Hi folks,

These two patches aim to resolve the syzkaller splat reported by
Jinjiang at [1].

Rather than introduce a new arch hook, as was proposed in [1], this
series instead augments the existing ioremap_prot() hook on arm64.

Cheers,

Will

[1] https://lore.kernel.org/r/[email-masked]

Cc: Zeng Heng <[email-masked]>
Cc: Jinjiang Tu <[email-masked]>
Cc: Catalin Marinas <[email-masked]>
Cc: Andrew Morton <[email-masked]>

--->8

Will Deacon (2):
  arm64: io: Rename ioremap_prot() to __ioremap_prot()
  arm64: io: Extract user memory type in ioremap_prot()

 arch/arm64/include/asm/io.h | 26 ++++++++++++++++++++------
 arch/arm64/kernel/acpi.c    |  2 +-
 arch/arm64/mm/ioremap.c     |  6 +++---
 3 files changed, 24 insertions(+), 10 deletions(-)

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2.53.0.371.g1d285c8824-goog