linux-kernel - Re: mainline build failure due to c8171a86b274 ("csky: Fixup -Wmissing-prototypes warning")

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Message-ID: <527df158-7d32-42ba-d5f1-9dad30704cc1@leemhuis.info>
Date:   Wed, 30 Aug 2023 15:06:59 +0200
From:   "Linux regression tracking (Thorsten Leemhuis)" 
        <regressions@...mhuis.info>
To:     "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com>,
        Guo Ren <guoren@...ux.alibaba.com>,
        Oleg Nesterov <oleg@...hat.com>, Guo Ren <guoren@...nel.org>
Cc:     linux-csky@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        regressions@...ts.linux.dev
Subject: Re: mainline build failure due to c8171a86b274 ("csky: Fixup
 -Wmissing-prototypes warning")

On 30.08.23 13:40, Sudip Mukherjee (Codethink) wrote:
> 
> The latest mainline kernel branch fails to build csky allmodconfig with
> the error:

Thx for the report and involving regzbot. To make one thing more obvious:

Guo Ren, it seems to be caused by a commit of yours.

And fun fact: seem 0day bot found the same problem nearly thee weeks
ago, but nobody cared afaics:
https://lore.kernel.org/all/202308120502.MXpchFC1-lkp@intel.com/

Ciao, Thorsten

> In file included from ./arch/csky/include/asm/ptrace.h:7,
>                  from ./arch/csky/include/asm/processor.h:8,
>                  from ./include/linux/prefetch.h:15,
>                  from drivers/net/ethernet/intel/i40e/i40e_txrx.c:4:
> ./arch/csky/include/asm/traps.h:43:11: error: expected ';' before 'void'
>    43 | asmlinkage void do_trap_unknown(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:44:11: error: expected ';' before 'void'
>    44 | asmlinkage void do_trap_zdiv(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:45:11: error: expected ';' before 'void'
>    45 | asmlinkage void do_trap_buserr(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:46:11: error: expected ';' before 'void'
>    46 | asmlinkage void do_trap_misaligned(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:47:11: error: expected ';' before 'void'
>    47 | asmlinkage void do_trap_bkpt(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:48:11: error: expected ';' before 'void'
>    48 | asmlinkage void do_trap_illinsn(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:49:11: error: expected ';' before 'void'
>    49 | asmlinkage void do_trap_fpe(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:50:11: error: expected ';' before 'void'
>    50 | asmlinkage void do_trap_priv(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:51:11: error: expected ';' before 'void'
>    51 | asmlinkage void trap_c(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> ./arch/csky/include/asm/traps.h:53:11: error: expected ';' before 'void'
>    53 | asmlinkage void do_notify_resume(struct pt_regs *regs,
>       |           ^~~~~
>       |           ;
> In file included from ./arch/csky/include/asm/processor.h:8,
>                  from ./include/linux/prefetch.h:15,
>                  from drivers/net/ethernet/intel/i40e/i40e_txrx.c:4:
> ./arch/csky/include/asm/ptrace.h:99:11: error: expected ';' before 'int'
>    99 | asmlinkage int syscall_trace_enter(struct pt_regs *regs);
>       |           ^~~~
>       |           ;
> ./arch/csky/include/asm/ptrace.h:100:11: error: expected ';' before 'void'
>   100 | asmlinkage void syscall_trace_exit(struct pt_regs *regs);
>       |           ^~~~~
>       |           ;
> 
> git bisect pointed to c8171a86b274 ("csky: Fixup -Wmissing-prototypes warning").
> 
> Reverting the commit has fixed the build failure.
> 
> I will be happy to test any patch or provide any extra log if needed.
> 
> #regzbot introduced: c8171a86b27401aa1f492dd1f080f3102264f1ab

#regzbot monitor:
https://lore.kernel.org/all/202308120502.MXpchFC1-lkp@intel.com/