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authorCyrill Gorcunov <gorcunov@openvz.org>2009-08-01 11:48:00 +0400
committerIngo Molnar <mingo@elte.hu>2009-08-05 10:30:50 +0200
commita7428cd2ef77734465e36bceb43290e37e2a97c6 (patch)
tree244b5b95fb559806307103a14c464a9f1d38386c /arch/x86/kernel/apic
parent2977fb3ffc8493a2f4f0a362e8660a6cde9f1bb9 (diff)
x86, ioapic: Throw BUG instead of NULL dereference
Instead of plain NULL deref we better throw error message with a backtrace. Actually we need more gracious error handling here. Meanwhile leave it as is. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: yinghai@kernel.org LKML-Reference: <20090801075435.769301745@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic')
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index ffd8fdfcbe4..2a145d3a837 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -503,6 +503,10 @@ static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin
}
entry = get_one_free_irq_2_pin(node);
+ if (!entry) {
+ printk(KERN_ERR "can not alloc irq_pin_list\n");
+ BUG_ON(1);
+ }
entry->apic = apic;
entry->pin = pin;