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[PULL 2/2] hw/audio/fmopl: fix segmentation fault
From: |
Gerd Hoffmann |
Subject: |
[PULL 2/2] hw/audio/fmopl: fix segmentation fault |
Date: |
Wed, 25 Mar 2020 11:58:43 +0100 |
From: Volker Rümelin <address@hidden>
Current code allocates the memory for ENV_CURVE too late. Move
allocation to OPLOpenTable() and deallocation to OPLCloseTable().
To reproduce the bug start qemu with -soundhw adlib.
Fixes 2eea51bd01 "hw/audio/fmopl: Move ENV_CURVE to .heap to save
32KiB of .bss"
Signed-off-by: Volker Rümelin <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Message-id: address@hidden
Signed-off-by: Gerd Hoffmann <address@hidden>
---
hw/audio/fmopl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/audio/fmopl.c b/hw/audio/fmopl.c
index 356d4dfbcaa6..8a71a569fab0 100644
--- a/hw/audio/fmopl.c
+++ b/hw/audio/fmopl.c
@@ -627,6 +627,7 @@ static int OPLOpenTable( void )
free(AMS_TABLE);
return 0;
}
+ ENV_CURVE = g_new(int32_t, 2 * EG_ENT + 1);
/* make total level table */
for (t = 0;t < EG_ENT-1 ;t++){
rate = ((1<<TL_BITS)-1)/pow(10,EG_STEP*t/20); /* dB ->
voltage */
@@ -694,6 +695,7 @@ static int OPLOpenTable( void )
static void OPLCloseTable( void )
{
+ g_free(ENV_CURVE);
free(TL_TABLE);
free(SIN_TABLE);
free(AMS_TABLE);
@@ -1090,7 +1092,6 @@ FM_OPL *OPLCreate(int clock, int rate)
OPL->clock = clock;
OPL->rate = rate;
OPL->max_ch = max_ch;
- ENV_CURVE = g_new(int32_t, 2 * EG_ENT + 1);
/* init grobal tables */
OPL_initialize(OPL);
/* reset chip */
@@ -1128,7 +1129,6 @@ void OPLDestroy(FM_OPL *OPL)
#endif
OPL_UnLockTable();
free(OPL);
- g_free(ENV_CURVE);
}
/* ---------- Option handlers ---------- */
--
2.18.2