linux-kernel - [PATCH] [IA64] disable interrupts when exiting from ia64_mca_cmc_int

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 8 Feb 2012 15:32:13 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>
Cc:	linux-kernel@...r.kernel.org, Raymund Will <rw@...e.de>,
	linux-ia64@...r.kernel.org
Subject: [PATCH] [IA64] disable interrupts when exiting from
 ia64_mca_cmc_int_handler()

SAL specification mandates that ia64_mca_log_sal_error_record() gets 
called with interrupts enabled, and that's why ia64_mca_cmc_int_handler() 
is enabling them. It however forgets to re-disable them when exiting, 
which triggers WARN_ON() in generic IRQ handler.

Disable the interrupts again before exiting. This is analogous to 
a3967685745 ("[IA64] disable interrupts at end of 
ia64_mca_cpe_int_handler()").

Signed-off-by: Jiri Kosina <jkosina@...e.cz>
---
 arch/ia64/kernel/mca.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index 84fb405..8192009 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1447,6 +1447,8 @@ out:
 	/* Get the CMC error record and log it */
 	ia64_mca_log_sal_error_record(SAL_INFO_TYPE_CMC);
 
+	local_irq_disable();
+
 	return IRQ_HANDLED;
 }
 
-- 
Jiri Kosina
SUSE Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/