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C
Capsthorne
Participant
January 23, 2007
Question

Linux Player segfaults

  • January 23, 2007
  • 2 replies
  • 485 views
Bug Report

Summary : Flash runs for a short time but almost inevitably segfaults.

Browsers affected : Firefox 1.5.x, 2.0.0.1, Mozilla and Seamonkey. Opera is unsupported, but its behaviour may be instructive and is described below.

System Hardware : CPU = 2 x PIII smp. 768 MB ram. Graphics Card = nVidia GeForce FX 5500.

Kernel: vanilla 2.6.19.2 (previously 2.6.15)
X-Windows : Xorg 6.9.0
nVidia driver 1.0.9631 (current)

Libraries : I will supply details of the precise library versions to libflashplayer.so is linked if that will assist.

Distro: Nominally Slackware 9.1 (has been very extensively updated). glibc = 2.3.2. (Users of the more recent Slackware 10.2 are also reporting crashes on alt.os.linux.slackware).

Details: Both the beta and the release almost inevitably terminate in a segfault under all Mozilla.org browsers. Using youtube.com as a test site, videos load and run normally, including sound, for a few seconds (usually between 5 and 30 seconds), but almost inevitably segfault. Once or twice in at least 30 attempts display of a video has completed. Until the segfault arises all flash controls work normally. Very simple flash advertising content will sometimes play and loop without causing the segfault. I have created a test user with his own copy of the browsers and no extensions / themes other than libnullplugin.so and libflashplayer.so. The segfaults occur just as in the case of my own user.

For what it may be worth, when Opera is run from a terminal one sees :

(process:4982): GLib-GObject-CRITICAL **: gtype.c:2242: initialization assertion failed, use g_type_init() prior to this function

(process:4982): Gtk-CRITICAL **: gtk_clipboard_get_for_display: assertion `GDK_IS_DISPLAY (display)' failed
Adobe FlashPlayer: gtk_clipboard_get(GDK_SELECTION_PRIMARY); failed. Trying to call gtk_init(0,0);

The above errors do not cause any apparent problems. After the usual few seconds of play on youtube.com, however, the flash screen goes grey with the following error output to the terminal:

opera: Plug-in 4982 is not responding. It will be closed.
opera: Define environment variable OPERA_KEEP_BLOCKED_PLUGIN to keep blocked plug-ins.

It would appear that Opera continues to load the flash content even after this, but nothing is displayed.
    This topic has been closed for replies.

    2 replies

    T
    tcomputerchip
    Participant
    March 1, 2007
    This maybe related to the other bug reported with Flash showing only on the top.
    It was mentioned this might be a graphics card problem and not a flash problem.

    Not sure yet, hoping someone can figure it out.
    A
    Anonymous
    February 4, 2007
    I experience the same thing. I have found Flash 9 Seg Faults consistently and predictably whenever a window (or tab) exits/closes that has Flash 9 running on it. There is one curious exception. After running certain Flash animations once (I am still trying to document a specific example) then Flash 9 no longer Seg Faults.

    Slackware 10.2
    Kernel 2.6.16
    Firefox 2.0
    A
    Anonymous
    February 20, 2007
    Flash 9 (for Linux) in Firefox Seg Faults every time the window running flash is closed, or example, when following a link which replaces the page running Flash. This behavior is consistent and reproducible. It has exhibited this behavior since version 8.

    The following is the tail end results of running strace on Firefox 2.0.0.1 with Flash 9. www.adobe.com was accessed and the menu bar clicked so that the window would close and be replaced by the linked page. Note that it was an munmap call that threw the Segmentation Fault. As noted in http://www.opengroup.org/onlinepubs/007908799/xsh/munmap.html, after releasing the memory mapping "Further references to these pages result in the generation of a SIGSEGV signal to the process."

    ...

    read(3, "\1\30\7\354\20\1\0\0\0\0\0\0O\377\16\10\36\0\0\0`\367\263"..., 32) = 32
    readv(3, [{"\377\377\377\0\377\377\377\0\377\377\377\0\377\377\377"..., 1088}, {"", 0}], 2 ) = 1088
    write(3, "H\2\26\1\5#\340\0026\7\340\2\21\0\20\0\26\4\7\0\0\30\6"..., 2492) = 2492
    ioctl(3, FIONREAD, [0]) = 0
    poll([{fd=3, events=POLLIN}, {fd=10, events=POLLIN}, {fd=14, events=POLLIN|POLLPRI}, {fd=1 6, events=POLLIN|POLLPRI}, {fd=17, events=POLLIN|POLLPRI}, {fd=18, events=POLLIN|POLLPRI}, {fd=5, events=POLLIN, revents=POLLIN}], 7, -1) = 1
    futex(0x9573860, FUTEX_WAKE, 1) = 1
    futex(0x957385c, FUTEX_WAKE, 1) = 1
    futex(0x9573860, FUTEX_WAKE, 1) = 1
    futex(0x957385c, FUTEX_WAKE, 1) = 1
    futex(0x9573860, FUTEX_WAKE, 1) = 1
    futex(0x957385c, FUTEX_WAKE, 1) = 1
    munmap(0xb0876000, 16777216) = 0
    munmap(0xb1876000, 7854972) = 0
    --- SIGSEGV (Segmentation fault) @ 0 (0) ---
    rt_sigaction(SIGSEGV, NULL, {0xb622be14, [], 0}, 8) = 0
    times({tms_utime=1582, tms_stime=34, tms_cutime=0, tms_cstime=0}) = 1718733705
    rt_sigaction(SIGSEGV, {0x8082db6, ~[KILL STOP RTMIN RT_1], 0}, NULL, 8) = 0
    tgkill(8127, 8127, SIGSEGV) = 0
    sigreturn() = ? (mask now [])
    --- SIGSEGV (Segmentation fault) @ 0 (0) ---
    unlink("/home/pcrichtn/.mozilla/firefox/default.fwz/lock") = 0
    rt_sigaction(SIGSEGV, {SIG_DFL}, NULL, 8) = 0
    rt_sigprocmask(SIG_UNBLOCK, [SEGV], NULL, 8) = 0
    tgkill(8127, 8127, SIGSEGV) = 0
    --- SIGSEGV (Segmentation fault) @ 0 (0) ---
    +++ killed by SIGSEGV +++
    A
    Anonymous
    February 23, 2007
    Replying to my own reply ... is that like talking to myself?

    Here's a twist to the window closing segmentation fault - It appears it only happens if it is the last window Flash 9 window to close. In other words, it seems to run as long as there is another window/tab still open.
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