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    SubjectRe: Asterisk deadlocks since Kernel 4.1
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    Am 18.11.2015 um 22:40 schrieb Hannes Frederic Sowa:
    > On Wed, Nov 18, 2015, at 22:36, Stefan Priebe wrote:
    >> sorry here it is. What I'm wondering is why is there ipv6 stuff? I don't
    >> have ipv6 except for link local. Could it be this one?
    >>
    >> https://bugzilla.redhat.com/show_bug.cgi?id=505105#c79
    >>
    >> Thread 31 (Thread 0x7f295c011700 (LWP 26654)):
    >> #0 0x00007f295de3287d in recvmsg () at
    >> ../sysdeps/unix/syscall-template.S:82
    >> #1 0x00007f295de52fcc in make_request (fd=35, pid=26631,
    >> seen_ipv4=<optimized out>, seen_ipv6=<optimized out>,
    >> in6ai=<optimized out>, in6ailen=<optimized out>) at
    >> ../sysdeps/unix/sysv/linux/check_pf.c:119
    >> #2 0x00007f295de5344a in __check_pf (seen_ipv4=0x7f295c00e85f,
    >> seen_ipv6=0x7f295c00e85e, in6ai=0x7f295c00e840,
    >> in6ailen=0x7f295c00e838) at
    >> ../sysdeps/unix/sysv/linux/check_pf.c:271
    >> #3 0x00007f295de10007 in *__GI_getaddrinfo (name=0x7f295c00e8b0
    >> "10.12.12.55", service=0x7f295c00e8bc "2135",
    >> hints=0x7f295c00e910, pai=0x7f295c00e908) at
    >> ../sysdeps/posix/getaddrinfo.c:2389
    >
    > Can you also get a /proc/pid/stack stacktrace?

    Sure:

    For the thread:
    # cat /proc/26631/task/26654/stack
    [<ffffffffb34e5cdb>] __skb_recv_datagram+0x52b/0x5d0
    [<ffffffffb34e5db2>] skb_recv_datagram+0x32/0x40
    [<ffffffffb35227bc>] netlink_recvmsg+0x4c/0x300
    [<ffffffffb34d3863>] sock_recvmsg+0x13/0x20
    [<ffffffffb34d679e>] ___sys_recvmsg+0xee/0x230
    [<ffffffffb34d7739>] __sys_recvmsg+0x49/0x90
    [<ffffffffb34d7792>] SyS_recvmsg+0x12/0x20
    [<ffffffffb363f1ee>] system_call_fastpath+0x12/0x71
    [<ffffffffffffffff>] 0xffffffffffffffff

    Stefan

    >
    > Thanks,
    > Hannes
    >


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