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aplay: fix description about options for process duration #1

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aplay: fix description about options for process duration #1

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takaswie
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@takaswie takaswie commented Nov 6, 2018

Hi,

At present, aplay has two options for duration to process PCM frames.
However, the recent one ('--samples') option is not described yet in
its manual. Furthermore, '-s' option was used for '--sleep-min' option
once and description for this option was left as is. This can puzzle
uses.

This patchset improves description about options for process duration.

…m aplay manual

A '--sleep-min' option was already obsoleted for aplay. On the other hand,
a paragraph for the option was left as is.

This commit deletes the paragraph.

Fixes: 4cb74ae ('Remove sleep_min from aplay')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
A '--samples' ('-s') option was added so that record/playback process is
terminated after handling the same number of PCM frames as a value of the
option. However this option is not described in aplay manual.

This commit adds a paragraph for the option.

Fixes: 3d44e2b ('aplay: Add samples argument for playing/recording a given number of samples')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
…options

Either '--samples' ('-s') and '--duration' ('-d') option is available
exclusively, according to its semantics and actual implementation.

This commit improves description of manual at this point.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
@dbaluta
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dbaluta commented Nov 6, 2018

Hi @takaswie,

PR looks good to me.

Reviewed-by: Daniel Baluta daniel.baluta@nxp.com

Is this the correct way of offering reviewed-by on github? :)

@takaswie
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takaswie commented Nov 6, 2018

Hi @dbaluta

Hi @takaswie,

PR looks good to me.
Reviewed-by: Daniel Baluta daniel.baluta@nxp.com

Thanks for your catching this PR ;)

This is our first step to use services on github.com, and things are not decided yet; especially for reviewing/granting process of PR.

Is this the correct way of offering reviewed-by on github? :)

In ALSA community, actions over alsa-devel list is ever default communication path. But some developers including me wish actions in github.com side were handled as well. In this point, we need more discussion to find better ways for developers to work for their ideas, and for maintainers to achieve their tasks easily.

Anyway, I believe that your 'reviewed-by' tag will be added to commits on my PR, then merged.

Thank you.

@tiwai
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tiwai commented Nov 8, 2018

Now merged (with Daniel's reviewed-by tags). Thanks!

@tiwai tiwai closed this Nov 8, 2018
@takaswie takaswie deleted the topic/fix-aplay-manual branch November 13, 2018 22:11
masatake added a commit to masatake/alsa-utils that referenced this pull request May 16, 2024
alsactl distributed as part of Fedora 40 got a SEGV:

    # journalctl
    ...
    May 17 00:55:58 dev64.localdomain kernel: alsactl[1923]: segfault at 28 ip 00005600705b3373 sp 00007ffd9712bef0 error 4 in alsactl[5600705af000+13000] likely on CPU 5 (core 8, socket 0)
    ...

As the following output of the debug session, card_free() tried a card
pointing NULL:

    $ sudo coredumpctl debug alsactl
	       PID: 1923 (alsactl)
	       UID: 0 (root)
	       GID: 0 (root)
	    Signal: 11 (SEGV)
	 Timestamp: Fri 2024-05-17 00:55:58 JST (3h 34min ago)
      Command Line: /usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --initfile=/lib/alsa/init/00main rdaemon
	Executable: /usr/sbin/alsactl
     Control Group: /system.slice/alsa-state.service
	      Unit: alsa-state.service
	     Slice: system.slice
	   Boot ID: 241b5a2ef86f4940bb3d340583c80d88
	Machine ID: 437365709a8c488c9481ee4b6651c2ec
	  Hostname: dev64.localdomain
	   Storage: /var/lib/systemd/coredump/core.alsactl.0.241b5a2ef86f4940bb3d340583c80d88.1923.1715874958000000.zst (present)
      Size on Disk: 81.7K
	   Package: alsa-utils/1.2.11-1.fc40
	  build-id: 3b6fec58b3566d666d6e9fd48e8fcf04f03f0152
	   Message: Process 1923 (alsactl) of user 0 dumped core.

		    Module libasound.so.2 from rpm alsa-lib-1.2.11-2.fc40.x86_64
		    Module alsactl from rpm alsa-utils-1.2.11-1.fc40.x86_64
		    Stack trace of thread 1923:
		    #0  0x00005600705b3373 card_free (alsactl + 0xa373)
		    alsa-project#1  0x00005600705c0e54 state_daemon (alsactl + 0x17e54)
		    alsa-project#2  0x00005600705b2339 main (alsactl + 0x9339)
		    alsa-project#3  0x00007f4c0b9b7088 __libc_start_call_main (libc.so.6 + 0x2a088)
		    alsa-project#4  0x00007f4c0b9b714b __libc_start_main_impl (libc.so.6 + 0x2a14b)
		    alsa-project#5  0x00005600705b2df5 _start (alsactl + 0x9df5)
		    ELF object binary architecture: AMD x86-64

    GNU gdb (Fedora Linux) 14.2-1.fc40
    Copyright (C) 2023 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
    Type "show copying" and "show warranty" for details.
    This GDB was configured as "x86_64-redhat-linux-gnu".
    Type "show configuration" for configuration details.
    For bug reporting instructions, please see:
    <https://www.gnu.org/software/gdb/bugs/>.
    Find the GDB manual and other documentation resources online at:
	<http://www.gnu.org/software/gdb/documentation/>.

    For help, type "help".
    Type "apropos word" to search for commands related to "word"...
    Reading symbols from /usr/sbin/alsactl...
    Reading symbols from /usr/lib/debug/usr/sbin/alsactl-1.2.11-1.fc40.x86_64.debug...
    [New LWP 1923]
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib64/libthread_db.so.1".
    Core was generated by `/usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --init'.
    Program terminated with signal SIGSEGV, Segmentation fault.
    #0  free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
    73		for (i = 0; i < list->size; i++)
    (gdb) where
    #0  free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
    alsa-project#1  card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
    alsa-project#2  0x00005600705c0e54 in state_daemon (file=file@entry=0x5600705c31a1 "/var/lib/alsa/asound.state", cardname=cardname@entry=0x0, period=period@entry=300,
	pidfile=pidfile@entry=0x5600705c3170 "/var/run/alsactl.pid") at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:455
    alsa-project#3  0x00005600705b2339 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/alsactl.c:459
    (gdb) list
    68
    69	static void free_list(struct id_list *list)
    70	{
    71		int i;
    72
    73		for (i = 0; i < list->size; i++)
    74			free(list->list[i]);
    75		free(list->list);
    76	}
    77
    (gdb) up
    alsa-project#1  card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
    82		free_list(&c->blacklist);
    (gdb) p c
    $1 = (struct card *) 0x0
    (gdb)

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
perexg pushed a commit that referenced this pull request May 23, 2024
alsactl distributed as part of Fedora 40 got a SEGV:

    # journalctl
    ...
    May 17 00:55:58 dev64.localdomain kernel: alsactl[1923]: segfault at 28 ip 00005600705b3373 sp 00007ffd9712bef0 error 4 in alsactl[5600705af000+13000] likely on CPU 5 (core 8, socket 0)
    ...

As the following output of the debug session, card_free() tried a card
pointing NULL:

    $ sudo coredumpctl debug alsactl
	       PID: 1923 (alsactl)
	       UID: 0 (root)
	       GID: 0 (root)
	    Signal: 11 (SEGV)
	 Timestamp: Fri 2024-05-17 00:55:58 JST (3h 34min ago)
      Command Line: /usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --initfile=/lib/alsa/init/00main rdaemon
	Executable: /usr/sbin/alsactl
     Control Group: /system.slice/alsa-state.service
	      Unit: alsa-state.service
	     Slice: system.slice
	   Boot ID: 241b5a2ef86f4940bb3d340583c80d88
	Machine ID: 437365709a8c488c9481ee4b6651c2ec
	  Hostname: dev64.localdomain
	   Storage: /var/lib/systemd/coredump/core.alsactl.0.241b5a2ef86f4940bb3d340583c80d88.1923.1715874958000000.zst (present)
      Size on Disk: 81.7K
	   Package: alsa-utils/1.2.11-1.fc40
	  build-id: 3b6fec58b3566d666d6e9fd48e8fcf04f03f0152
	   Message: Process 1923 (alsactl) of user 0 dumped core.

		    Module libasound.so.2 from rpm alsa-lib-1.2.11-2.fc40.x86_64
		    Module alsactl from rpm alsa-utils-1.2.11-1.fc40.x86_64
		    Stack trace of thread 1923:
		    #0  0x00005600705b3373 card_free (alsactl + 0xa373)
		    #1  0x00005600705c0e54 state_daemon (alsactl + 0x17e54)
		    #2  0x00005600705b2339 main (alsactl + 0x9339)
		    #3  0x00007f4c0b9b7088 __libc_start_call_main (libc.so.6 + 0x2a088)
		    #4  0x00007f4c0b9b714b __libc_start_main_impl (libc.so.6 + 0x2a14b)
		    #5  0x00005600705b2df5 _start (alsactl + 0x9df5)
		    ELF object binary architecture: AMD x86-64

    GNU gdb (Fedora Linux) 14.2-1.fc40
    Copyright (C) 2023 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
    Type "show copying" and "show warranty" for details.
    This GDB was configured as "x86_64-redhat-linux-gnu".
    Type "show configuration" for configuration details.
    For bug reporting instructions, please see:
    <https://www.gnu.org/software/gdb/bugs/>.
    Find the GDB manual and other documentation resources online at:
	<http://www.gnu.org/software/gdb/documentation/>.

    For help, type "help".
    Type "apropos word" to search for commands related to "word"...
    Reading symbols from /usr/sbin/alsactl...
    Reading symbols from /usr/lib/debug/usr/sbin/alsactl-1.2.11-1.fc40.x86_64.debug...
    [New LWP 1923]
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib64/libthread_db.so.1".
    Core was generated by `/usr/sbin/alsactl -s -n 19 -c -E ALSA_CONFIG_PATH=/etc/alsa/alsactl.conf --init'.
    Program terminated with signal SIGSEGV, Segmentation fault.
    #0  free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
    73		for (i = 0; i < list->size; i++)
    (gdb) where
    #0  free_list (list=0x20) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:73
    #1  card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
    #2  0x00005600705c0e54 in state_daemon (file=file@entry=0x5600705c31a1 "/var/lib/alsa/asound.state", cardname=cardname@entry=0x0, period=period@entry=300,
	pidfile=pidfile@entry=0x5600705c3170 "/var/run/alsactl.pid") at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:455
    #3  0x00005600705b2339 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/alsactl.c:459
    (gdb) list
    68
    69	static void free_list(struct id_list *list)
    70	{
    71		int i;
    72
    73		for (i = 0; i < list->size; i++)
    74			free(list->list[i]);
    75		free(list->list);
    76	}
    77
    (gdb) up
    #1  card_free (card=card@entry=0x5600707455f0) at /usr/src/debug/alsa-utils-1.2.11-1.fc40.x86_64/alsactl/daemon.c:82
    82		free_list(&c->blacklist);
    (gdb) p c
    $1 = (struct card *) 0x0
    (gdb)

Closes: #267
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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3 participants