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Date:   Tue, 26 Mar 2019 17:16:18 +0100 (CET)
From:   Thomas Gleixner <>
To:     573149609 <>
cc:     linux-kernel <>, x86 <>,
        jpoimboe <>,
        syzkaller <>
Subject: Re: BUG: KASAN: stack-out-of-bounds in unwind_next_frame


On Mon, 25 Mar 2019, 573149609 wrote:

Thanks for the report.

> I think I found a reproducible kernel bug in version 5.0.4.
> Source file: arch/x86/kernel/unwind_orc.c:505
> The KASAN output is as following:
> [   26.095365] BUG: KASAN: stack-out-of-bounds in unwind_next_frame+0x1403/0x19e0
> [   26.095365] Read of size 8 at addr ffff88805cc67d18 by task syz-executor.0/2296

Can you please verify whether this problem persist in 5.1-rc2? If not, then
we missed a fix to backport. If yes, then we rather fix it there.



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