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hw/intc/apic: fix memory leak 

deliver_bitmask is allocated on the heap in apic_deliver(), but there
are many paths in the function that return before the corresponding
g_free() is reached.  Fix this by switching to g_autofree and, while at
it, also switch to g_new.  Do the same in apic_deliver_irq() as well
for consistency.

Fixes: b5ee0468e9 ("apic: add support for x2APIC mode", 2024-02-14)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Bui Quang Minh <minhquangbui99@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-ID: <20240304224133.267640-1-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Paolo Bonzini 2024-03-04 23:41:33 +01:00 committed by Philippe Mathieu-Daudé
parent ecca5ca549
commit 0fad90955e
1 changed files with 2 additions and 4 deletions
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6
hw/intc/apic.c
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@ -291,14 +291,13 @@ static void apic_deliver_irq(uint32_t dest, uint8_t dest_mode,
uint8_t delivery_mode, uint8_t vector_num,
uint8_t trigger_mode)
{
uint32_t *deliver_bitmask = g_malloc(max_apic_words * sizeof(uint32_t));
g_autofree uint32_t *deliver_bitmask = g_new(uint32_t, max_apic_words);
trace_apic_deliver_irq(dest, dest_mode, delivery_mode, vector_num,
trigger_mode);
apic_get_delivery_bitmask(deliver_bitmask, dest, dest_mode);
apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
g_free(deliver_bitmask);
}
bool is_x2apic_mode(DeviceState *dev)
@ -662,7 +661,7 @@ static void apic_deliver(DeviceState *dev, uint32_t dest, uint8_t dest_mode,
APICCommonState *s = APIC(dev);
APICCommonState *apic_iter;
uint32_t deliver_bitmask_size = max_apic_words * sizeof(uint32_t);
uint32_t *deliver_bitmask = g_malloc(deliver_bitmask_size);
g_autofree uint32_t *deliver_bitmask = g_new(uint32_t, max_apic_words);
uint32_t current_apic_id;
if (is_x2apic_mode(dev)) {
@ -708,7 +707,6 @@ static void apic_deliver(DeviceState *dev, uint32_t dest, uint8_t dest_mode,
}
apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
g_free(deliver_bitmask);
}
static bool apic_check_pic(APICCommonState *s)