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Fred Krogh
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Joined: 07 Feb 2005
Posts: 1036
Location: Tujunga, CA
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 Posted: Thu Jan 15, 2015 5:12 am Post subject: Segmentation Fault in pavucontrol -- FIXED |
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I'm using pusleautio, and have sound in my browser and in skype, but not in Audacious. Since pavucontrol is giving a segmentation fault, suspicions are there. Runningt strace pavucontrol gives lots of output. I'm just posting the last few lines here. Hoping someone has something to suggest. Thanks,
Fred | Code: | sendmsg(4, {msg_name(0)=NULL, msg_iov(2)=[{"l\1\0\1\0\0\0\0\t\0\0\0\250\0\0\0\1\1o\0.\0\0\0/org/a11"..., 184}, {"", 0}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 184
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
sendmsg(10, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\1\24\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0", 20}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=25790, uid=1000, gid=1000}}, msg_flags=0}, MSG_NOSIGNAL) = 20
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN|POLLOUT}], 4, 0) = 3 ([{fd=6, revents=POLLIN}, {fd=4, revents=POLLIN}, {fd=10, revents=POLLOUT}])
read(6, "\2\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(4, {msg_name(0)=NULL, msg_iov(1)=[{"l\2\1\1\10\0\0\0\352\0\0\0005\0\0\0\6\1s\0\5\0\0\0:1.30\0\0\0"..., 2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 256
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(4, 0x7fffdcbfe0e0, MSG_CMSG_CLOEXEC) = -1 EAGAIN (Resource temporarily unavailable)
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
sendto(10, "L\0\0\0\10L\0\0\0\0L\200\0\0\35x\0\0\1\0\201\261\347\t\233\31Q;\300\354\366i"..., 276, MSG_NOSIGNAL, NULL, 0) = 276
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN}], 4, 0) = 2 ([{fd=6, revents=POLLIN}, {fd=10, revents=POLLIN}])
read(6, "\7\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(10, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\0\17\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0", 20}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=3638, uid=1000, gid=1000}}, msg_flags=0}, 0) = 20
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN}], 4, 0) = 2 ([{fd=6, revents=POLLIN}, {fd=10, revents=POLLIN}])
read(6, "\2\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(10, {msg_name(0)=NULL, msg_iov(1)=[{"L\0\0\0\2L\0\0\0\0L\200\0\0\35", 15}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=3638, uid=1000, gid=1000}}, msg_flags=0}, 0) = 15
getuid() = 1000
getuid() = 1000
uname({sys="Linux", node="mon1", ...}) = 0
readlink("/proc/self/exe", "/usr/bin/pavucontrol", 99) = 20
open("/etc/machine-id", O_RDONLY|O_CLOEXEC) = 11
fcntl(11, F_GETFD) = 0x1 (flags FD_CLOEXEC)
fstat(11, {st_mode=S_IFREG|0644, st_size=33, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe5cf896000
read(11, "371d6b998ef3826327b48332000002a3"..., 4096) = 33
close(11) = 0
munmap(0x7fe5cf896000, 4096) = 0
sendto(10, "\0\0\2\10\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0", 20, MSG_NOSIGNAL, NULL, 0) = 20
sendto(10, "L\0\0\0\tL\0\0\0\1Ptapplication.name\0L\0\0"..., 520, MSG_NOSIGNAL, NULL, 0) = 520
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN}], 4, 0) = 2 ([{fd=6, revents=POLLIN}, {fd=10, revents=POLLIN}])
read(6, "\2\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN}], 4, 0) = 2 ([{fd=6, revents=POLLIN}, {fd=10, revents=POLLIN}])
read(6, "\2\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(10, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\0\17\377\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0", 20}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=3638, uid=1000, gid=1000}}, msg_flags=0}, 0) = 20
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(7, 0x7fffdcbfe0c0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=4, events=POLLIN}, {fd=10, events=POLLIN}], 4, 0) = 2 ([{fd=6, revents=POLLIN}, {fd=10, revents=POLLIN}])
read(6, "\2\0\0\0\0\0\0\0", 16) = 8
write(6, "\1\0\0\0\0\0\0\0", 8) = 8
recvmsg(10, {msg_name(0)=NULL, msg_iov(1)=[{"L\0\0\0\2L\0\0\0\1L\0\0\0000", 15}], msg_controllen=32, {cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS{pid=3638, uid=1000, gid=1000}}, msg_flags=0}, 0) = 15
open("/usr/share/pavucontrol/pavucontrol.glade", O_RDONLY) = 11
fstat(11, {st_mode=S_IFREG|0644, st_size=77241, ...}) = 0
read(11, "<?xml version=\"1.0\" encoding=\"UT"..., 77241) = 77241
close(11) = 0
futex(0x7fe5cd743568, FUTEX_WAKE, 2147483647) = 0
futex(0x7fe5cd743568, FUTEX_WAKE, 2147483647) = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL, si_addr=0} ---
+++ killed by SIGSEGV +++
Segmentation fault
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Last edited by Fred Krogh on Fri Jan 16, 2015 1:50 am; edited 1 time in total |
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ct85711
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Joined: 27 Sep 2005
Posts: 1791
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| Posted: Thu Jan 15, 2015 1:52 pm Post subject: |
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Just a hunch, but you may want to look into this bug report (it's silimar to the error I was having). https://bugs.gentoo.org/530170
That bug report has a patch and an updated ebuild included, that may very well fix your problem too. Sadly, it seems the devs has completely forgotten about this bug report, and accept the patch that upstream already accepted (yes I followed the chain of ppl accepting it, and it's accepted by RH). If you need help using the updated ebuild & patch, I'll try to help you on that. Maybe I'll see about prodding someone on irc tonight, about maybe looking at the bug report and maybe fix this issue. |
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Fred Krogh
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Joined: 07 Feb 2005
Posts: 1036
Location: Tujunga, CA
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| Posted: Thu Jan 15, 2015 3:38 pm Post subject: |
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Thanks for the suggestion. I decided to try the patch route. I deleted all the text in the patch down to the first line that started with diff and saved that file in /etc/portage/patches/media-sound/pavucontrol-2.0/pavucontrol-segfault.patch. The emerge showed no sign of using the patch, so I think I missed something,. I have done patches before for nvidia-drivers, but my experience with patches is limited. Anyway after the emerge it still gets a segmentation fault.
I then tried storing the ebuild in /var/db/pkg/media-sound/pavucontrol-2..0-r1. But emerge is picking up pavucontrol-2.0. So perhaps I didn't store the new ebuild properly? |
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Fred Krogh
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Joined: 07 Feb 2005
Posts: 1036
Location: Tujunga, CA
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| Posted: Thu Jan 15, 2015 8:27 pm Post subject: |
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| I just changed the audio setting in audacious use ALSA Ouput, and sound there is back. I'd still like to have pavuconrol working as I have found it very useful. |
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ct85711
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Joined: 27 Sep 2005
Posts: 1791
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| Posted: Thu Jan 15, 2015 10:42 pm Post subject: |
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Well, my experience using that patch, and also looking at other patches for pulseaudio, the text in the patch file is ignored; so you don't need to do anything with it. As far as the ebuild, I don't think putting the ebuild in /var/db/pkg/media-sound would do anything, as from my understanding portage is only going to check the normal tree and any overlays.
For me, I placed the ebuild in | Code: | | /usr/portage/media-sound/pavucontrol/ |
, made the files directory and placed the patch in there. Afterwards, I ran | Code: | | ebuild pavucontrol-2.0-r1.ebuild digest |
(I ran this command while in /usr/portage/media-sound/pavucontrol/, if you are not, use the full path to the ebuild). Once all that is done, you can just run | Code: | | emerge -u pavucontrol |
and it should update pavucontrol to use the updated ebuild & patch.
Note: Placing the ebuild in the normal portage tree is only a temporary thing, portage will remove it when you next sync. For more permanent fix, place it in a overlay. Alternatively, you could always replace the pavucontrol-2.0 ebuild with the 2.0-r1 (renamed as 2.0), which will cause the fix to be applied when you recompile it and stay (portage doesn't normally do checksum of installed packages, so it'll only see the same version and ignore it). Also running ebuild digest on the ebuild is a necessary step, to update the package's metadata. |
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comprookie2000
Retired Dev
Joined: 25 Jul 2004
Posts: 925
Location: Sun City Center, Florida
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| Posted: Thu Jan 15, 2015 10:56 pm Post subject: |
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Hi Fred,
Set up a local overlay, its fun and once you do it you will use it at times.
https://wiki.gentoo.org/wiki/Overlay/Local_overlay
Once you create the directory /usr/local/portage/media-sound/pavucontrol and then add your new ebuild to that, then you will create the directory to hold the patch.
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mkdir /usr/local/portage/media-sound/pavucontrol/files
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Add the patch to the files directory
Then you need to tell portage about the ebuild and patch
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cd /usr/local/portage/media-sound/
repoman manifest
emerge -av1 media-sound/pavucontrol
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_________________
http://dev.gentoo.org/~dabbott/ |
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Fred Krogh
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Joined: 07 Feb 2005
Posts: 1036
Location: Tujunga, CA
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| Posted: Fri Jan 16, 2015 1:50 am Post subject: |
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| Thanks, I now have pauvcontrol working. |
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