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From: Alexei Starovoitov <>
To: Alexei Starovoitov <>
Cc: "David S. Miller" <>,
	Daniel Borkmann <>, X86 ML <>,
	LKML <>,
	Network Development <>,
	bpf <>
Subject: Re: [PATCH bpf] bpf, x64: fix stack layout of JITed bpf code
Date: Sat, 15 Jun 2019 14:46:03 -0700
Message-ID: <> (raw)
In-Reply-To: <>

On Fri, Jun 14, 2019 at 4:10 PM Alexei Starovoitov <> wrote:
> Since commit 177366bf7ceb the %rbp stopped pointing to %rbp of the
> previous stack frame. That broke frame pointer based stack unwinding.
> This commit is a partial revert of it.
> Note that the location of tail_call_cnt is fixed, since the verifier
> enforces MAX_BPF_STACK stack size for programs with tail calls.
> Fixes: 177366bf7ceb ("bpf: change x86 JITed program stack layout")
> Signed-off-by: Alexei Starovoitov <>

Applied to bpf tree.

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-14 23:08 Alexei Starovoitov
2019-06-15 21:46 ` Alexei Starovoitov [this message]

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