Re: [PATCH v3] ARM: imx: Fix suspend/resume crash with Clang CFI

Yo'av Moshe <[email protected]>
Newsgroups dev.linux.lists.imx,dev.linux.lists.llvm,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-kernel,org.kernel.vger.stable
Message-ID <[email protected]> 
On 2026-07-22 8:03 PM, Sami Tolvanen wrote:
> As long as the C prototype for the assembly function matches the
> function pointer type, the hashes should also match. Can you dump the
> hash prefix from the OCRAM and compare it to the disassembly of the
> call site?
Here is what I saw when checking the disassembly in vmlinux:

1. Call site expected hash in pm-imx6.c: 0xA488EBFC
2. SYM_TYPED_FUNC_START hash prefix in suspend-imx6.S: 0xd4d4d4d4

It looks like because suspend-imx6.S is an assembly file, Clang emits
the default assembly type ID (0xd4d4d4d4) for it, which doesn't match
the C call site expectation (0xA488EBFC).

Yo'av
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