From: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Thomas Mingarelli <thomas.mingarelli@hpe.com>,
Wim Van Sebroeck <wim@iguana.be>, Corey Minyard <minyard@acm.org>
Cc: openipmi-developer@lists.sourceforge.net,
Michal Hocko <mhocko@kernel.org>, Borislav Petkov <bp@alien8.de>,
linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] ipmi/watchdog: Use nmi_panic() when kernel panics in NMI handler
Date: Tue, 01 Mar 2016 10:50:39 +0900 [thread overview]
Message-ID: <20160301015039.4318.58063.stgit@softrs> (raw)
In-Reply-To: <20160301015035.4318.78677.stgit@softrs>
commit 58c5661f2144 ("panic, x86: Allow CPUs to save registers even
if looping in NMI context") introduced nmi_panic() which prevents
concurrent/recursive execution of panic(). It also saves registers
for the crash dump on x86.
ipmi_watchdog driver can call panic() from NMI handler, so replace
it with nmi_panic().
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Corey Minyard <minyard@acm.org>
Cc: openipmi-developer@lists.sourceforge.net
---
drivers/char/ipmi/ipmi_watchdog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index 096f0ce..4facc75 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -1140,7 +1140,7 @@ ipmi_nmi(unsigned int val, struct pt_regs *regs)
the timer. So do so. */
pretimeout_since_last_heartbeat = 1;
if (atomic_inc_and_test(&preop_panic_excl))
- panic(PFX "pre-timeout");
+ nmi_panic(regs, PFX "pre-timeout");
}
return NMI_HANDLED;
next prev parent reply other threads:[~2016-03-01 1:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-01 1:50 [PATCH 0/3] Use nmi_panic() in panic on NMI case Hidehiro Kawai
2016-03-01 1:50 ` [PATCH 1/3] panic: Export panic_cpu and nmi_panic_self_stop Hidehiro Kawai
2016-03-01 7:24 ` Borislav Petkov
2016-03-01 7:48 ` 河合英宏 / KAWAI，HIDEHIRO
2016-03-01 8:49 ` Michal Hocko
2016-03-01 1:50 ` Hidehiro Kawai [this message]
2016-03-01 2:30 ` [PATCH 2/3] ipmi/watchdog: Use nmi_panic() when kernel panics in NMI handler Corey Minyard
2016-03-01 4:23 ` 河合英宏 / KAWAI，HIDEHIRO
2016-03-01 5:12 ` Guenter Roeck
2016-03-01 2:56 ` Guenter Roeck
2016-03-01 8:50 ` Michal Hocko
2016-03-01 1:50 ` [PATCH 3/3] hpwdt: " Hidehiro Kawai
2016-03-01 2:55 ` Guenter Roeck
2016-03-01 3:54 ` 河合英宏 / KAWAI，HIDEHIRO
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