Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: 2.6.12-mm1: BUG() in fd_install, RCU related? | Date | Thu, 23 Jun 2005 23:47:03 +0200 |
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Hi,
On Thursday, 23 of June 2005 21:02, Dipankar Sarma wrote: > On Thu, Jun 23, 2005 at 01:50:11PM +0200, syrius.ml@no-log.org wrote: > > Dipankar Sarma <dipankar@in.ibm.com> writes: > > > > > Some things are common - always with fcntl() or fcntl64() and with > > > a daemon. Does your box come up at all ? If so, can you get me an > > > strace on the process that triggers this ? If I can narrow it > > > down to a small testcase, it would be a lot easier. Also, does > > > switching off CONFIG_PREEMPT fix this problem ? > > > > I haven't read about this thread. I hope u'll find a way to reproduce > > it. here debian/sid i386 (.config sent in an earlier message), it 100% > > reproducible when restarting bind9. (it also happens on its own on > > different occasion) > > > > > > then i restart the daemon: > > > > end of a strace -f /etc/init.d/bind9 start > > 6541 rt_sigaction(SIGPIPE, {0xb7ca2a70, [], 0}, {SIG_IGN}, 8) = 0 > > 6541 send(3, "<30>Jun 23 00:51:35 named[6540]:"..., 82, 0) = 82 > > 6541 rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0 > > 6541 socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 10 > > 6541 fcntl64(10, F_DUPFD, 20) = 32 > > 6541 close(10) = 0 > > 6541 fcntl64(32, F_GETFL) = 0x2 (flags O_RDWR) > > 6541 fcntl64(32, F_SETFL, O_RDWR|O_NONBLOCK) = 0 > > 6541 setsockopt(32, SOL_SOCKET, SO_TIMESTAMP, [1], 4) = 0 > > 6541 setsockopt(32, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 > > 6541 bind(32, {sa_family=AF_INET, sin_port=htons(53), > > sin_addr=inet_addr("172.16.254.1")}, 16) = 0 > > 6541 socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 10 > > 6541 fcntl64(10, F_DUPFD, 20 > > Aha, this has been extremely helpful. Could you all please try the > following (untested) patch ? This should fix the problem, or > atleast one problem that I can see.
On my system the patch apparently fixes the problem. Excellent job! :-)
Thanks, Rafael
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