linux-kernel - Re: [PATCH] arm64/uprobes: change the uprobe_opcode

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Date:   Thu,  5 Jan 2023 18:03:57 +0000
From:   Will Deacon <will@...nel.org>
To:     guo.ziliang@....com.cn
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>, lkp@...el.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        huang.junhua@....com.cn
Subject: Re: [PATCH] arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning

On Wed, 28 Dec 2022 09:54:12 +0800 (CST), guo.ziliang@....com.cn wrote:
> From: junhua huang <huang.junhua@....com.cn>
> 
> After we fixed the uprobe inst endian in aarch_be, the sparse check report
> the following warning info:
> 
> sparse warnings: (new ones prefixed by >>)
> >> kernel/events/uprobes.c:223:25: sparse: sparse: restricted __le32 degrades to integer
> >> kernel/events/uprobes.c:574:56: sparse: sparse: incorrect type in argument 4 (different base types)
> @@     expected unsigned int [addressable] [usertype] opcode @@     got restricted __le32 [usertype] @@
>    kernel/events/uprobes.c:574:56: sparse:     expected unsigned int [addressable] [usertype] opcode
>    kernel/events/uprobes.c:574:56: sparse:     got restricted __le32 [usertype]
> >> kernel/events/uprobes.c:1483:32: sparse: sparse: incorrect type in initializer (different base types)
> @@     expected unsigned int [usertype] insn @@     got restricted __le32 [usertype] @@
>    kernel/events/uprobes.c:1483:32: sparse:     expected unsigned int [usertype] insn
>    kernel/events/uprobes.c:1483:32: sparse:     got restricted __le32 [usertype]
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning
      https://git.kernel.org/arm64/c/ef08c0fadd8a

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev