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Date:   Sun, 10 Sep 2017 18:58:33 -0700
From:   Max Filippov <>
To:     Guenter Roeck <>
Cc:     Byungchul Park <>,
        Peter Zijlstra <>,
        LKML <>,
        Chris Zankel <>,
        "" <>
Subject: Re: xtensa compiler error triggered by 'locking/lockdep: Implement
 the 'crossrelease' feature'

On Sun, Sep 10, 2017 at 11:31 AM, Guenter Roeck <> wrote:
> xtensa:allmodconfig fails to build in mainline with compiler errors
> as follows.
> drivers/staging/rtl8723bs/core/rtw_ap.c: In function ‘expire_timeout_chk’:
> drivers/staging/rtl8723bs/core/rtw_ap.c:442:1: internal compiler error:
>         in change_address_1, at emit-rtl.c:2126
> drivers/staging/rtl8188eu/core/rtw_ap.c: In function ‘expire_timeout_chk’:
> drivers/staging/rtl8188eu/core/rtw_ap.c:445:1: internal compiler error:
>         in change_address_1, at emit-rtl.c:2150
> I tried gcc 6.3, 6.4, and 7.2; they all have the same problem.
> Bisect points to commit b09be676e0f ("locking/lockdep: Implement the
> 'crossrelease' feature").
> The compile error is still seen if I disable CONFIG_LOCKDEP_CROSSRELEASE.
> The image builds fine if I disable both CONFIG_RTL8723BS and CONFIG_R8188EU.

Thanks for the report. I'll look at the compiler.

-- Max

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