linux-kernel - [tip:irq/numa] x86, apic: Restore irqs on fail paths

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

Date:	Tue, 2 Jun 2009 00:51:30 GMT
From:	tip-bot for Jiri Slaby <jirislaby@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	gorcunov@...nvz.org, jirislaby@...il.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:irq/numa] x86, apic: Restore irqs on fail paths

Commit-ID:  3d58829b0510244596079c1d2f1762c53aef2e97
Gitweb:     http://git.kernel.org/tip/3d58829b0510244596079c1d2f1762c53aef2e97
Author:     Jiri Slaby <jirislaby@...il.com>
AuthorDate: Thu, 28 May 2009 09:54:47 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 2 Jun 2009 02:48:59 +0200

x86, apic: Restore irqs on fail paths

lapic_resume forgets to restore interrupts on fail paths.
Fix that.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>
Acked-by: Cyrill Gorcunov <gorcunov@...nvz.org>
LKML-Reference: <1243497289-18591-1-git-send-email-jirislaby@...il.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Cc: H. Peter Anvin <hpa@...or.com>


---
 arch/x86/kernel/apic/apic.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index b0fd264..e82488d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2027,7 +2027,7 @@ static int lapic_resume(struct sys_device *dev)
 	unsigned int l, h;
 	unsigned long flags;
 	int maxlvt;
-	int ret;
+	int ret = 0;
 	struct IO_APIC_route_entry **ioapic_entries = NULL;
 
 	if (!apic_pm_state.active)
@@ -2038,14 +2038,15 @@ static int lapic_resume(struct sys_device *dev)
 		ioapic_entries = alloc_ioapic_entries();
 		if (!ioapic_entries) {
 			WARN(1, "Alloc ioapic_entries in lapic resume failed.");
-			return -ENOMEM;
+			ret = -ENOMEM;
+			goto restore;
 		}
 
 		ret = save_IO_APIC_setup(ioapic_entries);
 		if (ret) {
 			WARN(1, "Saving IO-APIC state failed: %d\n", ret);
 			free_ioapic_entries(ioapic_entries);
-			return ret;
+			goto restore;
 		}
 
 		mask_IO_APIC_setup(ioapic_entries);
@@ -2097,10 +2098,10 @@ static int lapic_resume(struct sys_device *dev)
 		restore_IO_APIC_setup(ioapic_entries);
 		free_ioapic_entries(ioapic_entries);
 	}
-
+restore:
 	local_irq_restore(flags);
 
-	return 0;
+	return ret;
 }
 
 /*
--
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/