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Date: Wed, 18 Nov 2015 21:23:11 +0100 From: Stefan Priebe <s.priebe@...fihost.ag> To: Thomas Gleixner <tglx@...utronix.de> Cc: netdev@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: Asterisk deadlocks since Kernel 4.1 Am 17.11.2015 um 20:43 schrieb Thomas Gleixner: > On Tue, 17 Nov 2015, Stefan Priebe wrote: >> I've now also two gdb backtraces from two crashes: >> http://pastebin.com/raw.php?i=yih5jNt8 >> >> http://pastebin.com/raw.php?i=kGEcvH4T > > They don't tell me anything as I have no idea of the inner workings of > asterisk. You might be better of to talk to the asterisk folks to help > you track down what that thing is waiting for, so we can actually look > at a well defined area. The asterisk guys told me it's a livelock asterisk is waiting for getaddrinfo / recvmsg. Thread 2 (Thread 0x7fbe989c6700 (LWP 12890)): #0 0x00007fbeb9eb487d in recvmsg () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007fbeb9ed4fcc in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007fbeb9ed544a in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #3 0x00007fbeb9e92007 in getaddrinfo () from /lib/x86_64-linux-gnu/libc.so.6 #4 0x00000000004f2e81 in ast_sockaddr_resolve (addrs=addrs@...ry=0x7fbe989c48d8, str=<optimized out>, str@...ry=0x7fbe989c4a80 "10.12.12.92:2052", flags=flags@...ry=0, family=2) at netsock2.c:268 #5 0x00007fbeb095fb8b in ast_sockaddr_resolve_first_af (family=<optimized out>, flag=0, name=0x7fbe989c4a80 "10.12.12.92:2052", addr=0x7fbeb4114948) at chan_sip.c:30797 #6 ast_sockaddr_resolve_first_transport (transport=<optimized out>, flag=0, name=0x7fbe989c4a80 "10.12.12.92:2052", addr=0x7fbeb4114948) at chan_sip.c:30828 #7 set_destination (uri=<optimized out>, p=0x7fbeb4114438) at chan_sip.c:10602 #8 reqprep (req=req@...ry=0x7fbe989c4fc0, p=p@...ry=0x7fbeb4114438, sipmethod=sipmethod@...ry=8, seqno=<optimized out>, seqno@...ry=0, newbranch=newbranch@...ry=1) at chan_sip.c:10925 ---Type <return> to continue, or q <return> to quit--- #9 0x00007fbeb0969968 in transmit_request_with_auth (p=p@...ry=0x7fbeb4114438, newbranch=1, reliable=XMIT_RELIABLE, seqno=0, sipmethod=8) at chan_sip.c:14296 #10 0x00007fbeb098b704 in sip_hangup (ast=<optimized out>) at chan_sip.c:6822 #11 0x0000000000477b55 in ast_hangup (chan=chan@...ry=0x7fbeb40ef018) at channel.c:2887 #12 0x000000000050ce1b in __ast_pbx_run (c=c@...ry=0x7fbeb40ef018, args=args@...ry=0x0) at pbx.c:5729 #13 0x000000000050e426 in pbx_thread (data=data@...ry=0x7fbeb40ef018) at pbx.c:5821 #14 0x0000000000548aaa in dummy_start (data=<optimized out>) at utils.c:1151 #15 0x00007fbeb965eb50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #16 0x00007fbeb9eb395d in clone () from /lib/x86_64-linux-gnu/libc.so.6 #17 0x0000000000000000 in ?? () In both cases, the thread is waiting in recvmsg. Stefan > > Thanks, > > tglx > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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