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Thu, 14 Nov 2024 04:53:24 -0800 (PST) X-Google-Smtp-Source: AGHT+IHtWOjSyACHpjrQPtye2XfhzEMc9TysELFO6ycQ0LSzy72ydoPCNfBcx1GvKOpUFOf44rfQug== X-Received: by 2002:a05:600c:35cb:b0:426:6f27:379a with SMTP id 5b1f17b1804b1-432da77f1ecmr18488515e9.13.1731588804070; Thu, 14 Nov 2024 04:53:24 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Michael Tokarev , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , qemu-stable@nongnu.org Subject: [PATCH 2/2] hw/audio/hda: fix memory leak on audio setup Date: Thu, 14 Nov 2024 13:53:18 +0100 Message-ID: <20241114125318.1707590-3-pbonzini@redhat.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241114125318.1707590-1-pbonzini@redhat.com> References: <20241114125318.1707590-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.122, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1731588861428116600 Content-Type: text/plain; charset="utf-8" When SET_STREAM_FORMAT is called, the st->buft timer is overwritten, thus causing a memory leak. This was originally fixed in commit 816139ae6a5 ("hw/audio/hda: fix memory leak on audio setup", 2024-11-14) but that caused the audio to break in SPICE. Fortunately, a simpler fix is possible. The timer only needs to be reset, because the callback is always the same (st->output is set at realize time in hda_audio_init); call to timer_new_ns overkill. Replace it with timer_del and only initialize the timer once; for simplicity, do it even if use_timer is false. An even simpler fix would be to free the old time in hda_audio_setup(). However, it seems better to place the initialization of the timer close to that of st->ouput. Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini --- hw/audio/hda-codec.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/hw/audio/hda-codec.c b/hw/audio/hda-codec.c index 74c0292284e..c340a9481d5 100644 --- a/hw/audio/hda-codec.c +++ b/hw/audio/hda-codec.c @@ -487,8 +487,7 @@ static void hda_audio_setup(HDAAudioStream *st) if (st->output) { if (use_timer) { cb =3D hda_audio_output_cb; - st->buft =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, - hda_audio_output_timer, st); + timer_del(st->buft); } else { cb =3D hda_audio_compat_output_cb; } @@ -497,8 +496,7 @@ static void hda_audio_setup(HDAAudioStream *st) } else { if (use_timer) { cb =3D hda_audio_input_cb; - st->buft =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, - hda_audio_input_timer, st); + timer_del(st->buft); } else { cb =3D hda_audio_compat_input_cb; } @@ -726,8 +724,12 @@ static void hda_audio_init(HDACodecDevice *hda, st->gain_right =3D QEMU_HDA_AMP_STEPS; st->compat_bpos =3D sizeof(st->compat_buf); st->output =3D true; + st->buft =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, + hda_audio_output_timer, st); } else { st->output =3D false; + st->buft =3D timer_new_ns(QEMU_CLOCK_VIRTUAL, + hda_audio_input_timer, st); } st->format =3D AC_FMT_TYPE_PCM | AC_FMT_BITS_16 | (1 << AC_FMT_CHAN_SHIFT); @@ -750,9 +752,7 @@ static void hda_audio_exit(HDACodecDevice *hda) if (st->node =3D=3D NULL) { continue; } - if (a->use_timer) { - timer_free(st->buft); - } + timer_free(st->buft); if (st->output) { AUD_close_out(&a->card, st->voice.out); } else { --=20 2.47.0