linux-kernel - Re: [PATCH] riscv: fix out of bounds in walk

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Message-ID: <2023092939-lagoon-punctual-e312@gregkh>
Date:   Fri, 29 Sep 2023 08:04:57 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Edward AD <twuufnxlz@...il.com>
Cc:     alex@...ti.fr, alexghiti@...osinc.com, aou@...s.berkeley.edu,
        conor@...nel.org, guoren@...nel.org, jirislaby@...nel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-serial@...r.kernel.org, liushixin2@...wei.com,
        palmer@...belt.com, paul.walmsley@...ive.com,
        syzbot+8d2757d62d403b2d9275@...kaller.appspotmail.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH] riscv: fix out of bounds in walk_stackframe

On Fri, Sep 29, 2023 at 07:12:40AM +0800, Edward AD wrote:
> Add vmalloc and kernel addresses check to prevent invalid access.
> 
> Closes: https://lore.kernel.org/all/20230926105949.1025995-2-twuufnxlz@gmail.com/
> Fixes: 5d8544e2d007 ("RISC-V: Generic library routines and assembly")
> Reported-and-test-by: syzbot+8d2757d62d403b2d9275@...kaller.appspotmail.com
> Link: https://lore.kernel.org/all/0000000000000170df0605ccf91a@google.com/T/
> Signed-off-by: Edward AD <twuufnxlz@...il.com>
> ---
>  arch/riscv/kernel/stacktrace.c | 3 +++

Where are you getting your odd cc: list from?  This has nothing to do
with serial drivers...

greg k-h