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[PULL,13/23] hw/scsi/lsi53c895a: fix memory leak in lsi_scsi_realize()

Message ID 20250331194822.77309-14-philmd@linaro.org
State Accepted
Commit 48ca224250444150f21cbded5745a0e36703b5e7
Headers show
Series [PULL,01/23] hw/arm/armv7m: Expose and access System Control Space as little endian | expand

Commit Message

Philippe Mathieu-Daudé March 31, 2025, 7:48 p.m. UTC 
From: Zheng Huang <hz1624917200@gmail.com>

Address a memory leak bug in the usages of timer_del().

The issue arises from the incorrect use of the ambiguous timer API
timer_del(), which does not free the timer object. The LeakSanitizer
report this issue during fuzzing. The correct API timer_free() freed
the timer object instead.

=================================================================
==2586273==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x55f2afd89879 in calloc /llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:75:3
    #1 0x7f443b93ac50 in g_malloc0 (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x5ec50)
    #2 0x55f2b053962e in timer_new include/qemu/timer.h:542:12
    #3 0x55f2b0514771 in timer_new_us include/qemu/timer.h:582:12
    #4 0x55f2b0514288 in lsi_scsi_realize hw/scsi/lsi53c895a.c:2350:24
    #5 0x55f2b0452d26 in pci_qdev_realize hw/pci/pci.c:2174:9

Signed-off-by: Zheng Huang <hz1624917200@outlook.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <73cd69f9-ff9b-4cd4-b8aa-265f9d6067b9@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/scsi/lsi53c895a.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c
index d85e384ad63..6689ebba25b 100644
--- a/hw/scsi/lsi53c895a.c
+++ b/hw/scsi/lsi53c895a.c
@@ -2372,7 +2372,7 @@  static void lsi_scsi_exit(PCIDevice *dev)
     LSIState *s = LSI53C895A(dev);
 
     address_space_destroy(&s->pci_io_as);
-    timer_del(s->scripts_timer);
+    timer_free(s->scripts_timer);
 }
 
 static void lsi_class_init(ObjectClass *klass, void *data)