From: Paul Walmsley <paul.walmsley@sifive.com>
To: Vincent Chen <vincent.chen@sifive.com>
Cc: linux-riscv@lists.infradead.org, palmer@sifive.com,
linux-kernel@vger.kernel.org, aou@eecs.berkeley.edu
Subject: Re: [PATCH 1/4] riscv: avoid kernel hangs when trapped in BUG()
Date: Fri, 4 Oct 2019 11:26:15 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.21.9999.1910041126030.15827@viisi.sifive.com> (raw)
In-Reply-To: <1569199517-5884-2-git-send-email-vincent.chen@sifive.com>
On Mon, 23 Sep 2019, Vincent Chen wrote:
> When the CONFIG_GENERIC_BUG is disabled by disabling CONFIG_BUG, if a
> kernel thread is trapped by BUG(), the whole system will be in the
> loop that infinitely handles the ebreak exception instead of entering the
> die function. To fix this problem, the do_trap_break() will always call
> the die() to deal with the break exception as the type of break is
> BUG_TRAP_TYPE_BUG.
>
> Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Thanks, queued for v5.4-rc.
- Paul
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next prev parent reply other threads:[~2019-10-04 18:26 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 0:45 [PATCH 0/4] riscv: correct the do_trap_break() Vincent Chen
2019-09-23 0:45 ` [PATCH 1/4] riscv: avoid kernel hangs when trapped in BUG() Vincent Chen
2019-09-27 22:25 ` Christoph Hellwig
2019-10-04 18:26 ` Paul Walmsley [this message]
2019-09-23 0:45 ` [PATCH 2/4] rsicv: avoid sending a SIGTRAP to a user thread trapped in WARN() Vincent Chen
2019-09-27 22:27 ` Christoph Hellwig
2019-09-27 22:56 ` Christoph Hellwig
2019-09-30 0:22 ` Vincent Chen
2019-10-04 18:26 ` Paul Walmsley
2019-09-23 0:45 ` [PATCH 3/4] riscv: Correct the handling of unexpected ebreak in do_trap_break() Vincent Chen
2019-09-27 22:43 ` Christoph Hellwig
2019-10-04 18:28 ` Paul Walmsley
2019-09-23 0:45 ` [PATCH 4/4] riscv: remove the switch statement " Vincent Chen
2019-09-27 22:47 ` Christoph Hellwig
2019-10-07 16:08 ` Paul Walmsley
2019-10-07 16:10 ` Christoph Hellwig
2019-10-07 16:30 ` Paul Walmsley
2019-10-08 0:14 ` Vincent Chen
2019-10-08 17:07 ` Paul Walmsley
2019-10-09 22:26 ` Paul Walmsley
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