[pulseaudio-discuss] 回复: How to fix pulseaudio crash when playing music
Chengyi Zhao
chengyi.zhao at outlook.com
Tue Jun 9 14:13:33 UTC 2020
Hi Georg,
Thanks for your reply!
Hi all,
I try to apply the following patch to fix this issue, please help review, thanks!
Date: Tue Jun 9 22:09:36 2020 +0800
srb: ignore srb when reading/writing srb generated an exception
When the function do_read() returns -1, the program continues
reading the same srb, maybe it will occur the crash.
diff --git a/src/pulsecore/pstream.c b/src/pulsecore/pstream.c
index 3b94a3adf..4fcec51c6 100644
--- a/src/pulsecore/pstream.c
+++ b/src/pulsecore/pstream.c
@@ -235,7 +235,7 @@ void pa_cmsg_ancil_data_close_fds(struct pa_cmsg_ancil_data *ancil) {
static int do_write(pa_pstream *p);
static int do_read(pa_pstream *p, struct pstream_read *re);
-static void do_pstream_read_write(pa_pstream *p) {
+static int do_pstream_read_write(pa_pstream *p) {
pa_assert(p);
pa_assert(PA_REFCNT_VALUE(p) > 0);
@@ -244,8 +244,15 @@ static void do_pstream_read_write(pa_pstream *p) {
p->mainloop->defer_enable(p->defer_event, 0);
if (!p->dead && p->srb) {
- do_write(p);
- while (!p->dead && do_read(p, &p->readsrb) == 0);
+ if(do_write(p) < 0)
+ goto ignore;
+
+ int r = 0;
+ while (!p->dead && r == 0) {
+ r = do_read(p, &p->readsrb);
+ if (r < 0)
+ goto ignore;
+ }
}
if (!p->dead && pa_iochannel_is_readable(p->io)) {
@@ -263,7 +270,12 @@ static void do_pstream_read_write(pa_pstream *p) {
}
pa_pstream_unref(p);
- return;
+ return 0;
+
+ignore:
+
+ pa_pstream_unref(p);
+ return -1;
fail:
@@ -272,9 +284,11 @@ fail:
pa_pstream_unlink(p);
pa_pstream_unref(p);
+ return -1;
}
static bool srb_callback(pa_srbchannel *srb, void *userdata) {
+ int r;
bool b;
pa_pstream *p = userdata;
@@ -284,11 +298,11 @@ static bool srb_callback(pa_srbchannel *srb, void *userdata) {
pa_pstream_ref(p);
- do_pstream_read_write(p);
+ r = do_pstream_read_write(p);
/* If either pstream or the srb is going away, return false.
We need to check this before p is destroyed. */
- b = (PA_REFCNT_VALUE(p) > 1) && (p->srb == srb);
+ b = (r == 0) && (PA_REFCNT_VALUE(p) > 1) && (p->srb == srb);
pa_pstream_unref(p);
return b;
Best Regards,
Chengyi
________________________________
From: Georg Chini <georg at chini.tk>
Sent: Tuesday, June 9, 2020 2:01
To: General PulseAudio Discussion <pulseaudio-discuss at lists.freedesktop.org>; Zhao Chengyi <chengyi.zhao at outlook.com>
Subject: Re: [pulseaudio-discuss] 回复: How to fix pulseaudio crash when playing music
On 09.06.20 10:39, Zhao Chengyi wrote:
Please ignore the gdb bt information above because of error dbgsyms,
and please refer to the following logs when occurring crash.
5月 26 03:14:24 test-PC pulseaudio[2841]: W: [pulseaudio] pstream.c: Received SHM memblock frame with invalid frame length.
5月 26 03:14:24 test-PC pulseaudio[2841]: E: [pulseaudio] pstream.c: Assertion 're->data || re->memblock' failed at pulsecore/pstream.c:862, function do_read(). Aborting.
5月 26 03:14:24 test-PC systemd[1]: Created slice system-systemd\x2dcoredump.slice.
5月 26 03:14:24 test-PC systemd[1]: Started Process Core Dump (PID 10183/UID 0).
5月 26 03:14:25 test-PC bluetoothd[1700]: Endpoint unregistered: sender=:1.60 path=/MediaEndpoint/A2DPSource
5月 26 03:14:25 test-PC bluetoothd[1700]: Endpoint unregistered: sender=:1.60 path=/MediaEndpoint/A2DPSink
5月 26 03:14:25 test-PC daemon/audio[2874]: audio_events.go:65: pulseaudio context state failed
5月 26 03:14:25 test-PC systemd[2674]: pulseaudio.service: Main process exited, code=dumped, status=6/ABRT
5月 26 03:14:25 test-PC systemd[2674]: pulseaudio.service: Failed with result 'core-dump'.
5月 26 03:14:25 test-PC systemd-coredump[10184]: Process 2841 (pulseaudio) of user 1000 dumped core.
Stack trace of thread 2841:
#0 0x0000ffff8702a714 raise (libc.so.6)
#1 0x0000ffff870188e8 abort (libc.so.6)
#2 0x0000ffff873b5728 n/a (libpulsecommon-12.2.so)
#3 0x0000ffff873b7fd8 n/a (libpulsecommon-12.2.so)
#4 0x0000ffff873b8368 n/a (libpulsecommon-12.2.so)
#5 0x0000ffff873b8bec n/a (libpulsecommon-12.2.so)
#6 0x0000ffff87339c70 pa_mainloop_dispatch (libpulse.so.0)
#7 0x0000ffff8733a01c pa_mainloop_iterate (libpulse.so.0)
#8 0x0000ffff8733a0d8 pa_mainloop_run (libpulse.so.0)
#9 0x0000000000406894 main (pulseaudio)
#10 0x0000ffff87018d24 __libc_start_main (libc.so.6)
#11 0x00000000004076c4 _start (pulseaudio)
#12 0x00000000004076c4 _start (pulseaudio)
5月 26 03:14:25 test-PC systemd[2674]: pulseaudio.service: Service RestartSec=100ms expired, scheduling restart.
5月 26 03:14:25 test-PC systemd[2674]: pulseaudio.service: Scheduled restart job, restart counter is at 1.
5月 26 03:14:25 test-PC systemd[2674]: Stopped Sound Service.
5月 26 03:14:25 test-PC systemd[2674]: Starting Sound Service...
5月 26 03:14:25 test-PC pulseaudio[10197]: W: [pulseaudio] pid.c: Stale PID file, overwriting.
Best Regards,
Chengyi
________________________________
发件人: Zhao Chengyi
发送时间: 2020年6月9日 0:30
收件人: pulseaudio-discuss at lists.freedesktop.org<mailto:pulseaudio-discuss at lists.freedesktop.org> <pulseaudio-discuss at lists.freedesktop.org><mailto:pulseaudio-discuss at lists.freedesktop.org>
主题: How to fix pulseaudio crash when playing music
Hi,
I found pulseaudio crash when playing music, please help fix this issue, thanks a lot!
please refer to the following gdb information when occurring crash:
[Current thread is 1 (Thread 0xffff86823010 (LWP 2841))]
(gdb) bt
#0 0x0000ffff8702a714 in __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x0000ffff870188e8 in __GI_abort () at abort.c:79
#2 0x0000ffff873b5728 in do_read (p=p at entry=0x3673a170, re=re at entry=0x3673a338) at pulsecore/pstream.c:856
#3 0x0000ffff873b7fd8 in do_pstream_read_write (p=0x3673a170) at pulsecore/pstream.c:248
#4 0x0000ffff873b8368 in srb_callback (srb=<optimized out>, userdata=0x3673a170) at pulsecore/pstream.c:287
#5 0x0000ffff873b8bec in srbchannel_rwloop (sr=0x36766ae0) at pulsecore/srbchannel.c:190
#6 0x0000ffff87339c70 in dispatch_pollfds (m=0x36670db0) at pulse/mainloop.c:655
#7 0x0000ffff87339c70 in pa_mainloop_dispatch (m=m at entry=0x36670db0) at pulse/mainloop.c:898
#8 0x0000ffff8733a01c in pa_mainloop_iterate (m=0x36670db0, block=<optimized out>, retval=0xffffd9683030) at pulse/mainloop.c:929
#9 0x0000ffff8733a0d8 in pa_mainloop_run (m=m at entry=0x36670db0, retval=retval at entry=0xffffd9683030) at pulse/mainloop.c:945
#10 0x0000000000406894 in main (argc=<optimized out>, argv=<optimized out>) at daemon/main.c:1144
Best Regards,
Chengyi
Hi,
there is a bug report on Gitlab which describes exactly the same problem:
https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/859
Unfortunately we did not yet have the time to investigate further.
Regards
Georg
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