This is why I've never bothered to fix the crashes when desrtoy_fsals() finds things; it's an indication to me that something is leaking refs.
On Tue, Dec 12, 2017 at 7:55 PM, Frank Filz <ffilz...@mindspring.com> wrote: >> I was testing code I'd written over the weekend, but it segfaulted on >> shutdown after running pynfs (pynfs itself was successful.) No problems >> simply starting and pkilling without doing any work. >> >> Gradually backed things out, until I'm at the 1a75e52 V2.6-dev.20, but > still >> seeing the problem on shutdown. Ran it twice to be sure. Took quite a > bit of >> time to run pynfs over and over. > > Ok, so I've fixed the crash, but looking at some debug, the reason we are > getting to where it could crash is that we are leaking export references. > I'm doing some code examination and finding export and obj_handle reference > leaks... So far they are all in NFS v4. > > I hope to post some patches early tomorrow. > > It would really help if things that expected everything to cleanup actually > checked if everything was cleaned up... > > destroy_fsals should never find any exports to call shutdown_export on. > > Frank > >> Error: couldn't complete write to the log file >> /home/bill/rdma/install/var/log/ganesha.log status=9 (Bad file descriptor) >> message was: >> 11/12/2017 19:13:01 : epoch 5a2f193a : simpson91 : ganesha.nfsd- >> 13288[Admin] rpc :TIRPC :DEBUG :svc_destroy_it() 0x61900008bb80 fd 19 >> xp_refs 1 af 0 port 4294967295 @ svc_xprt_shutdown:364 >> >> Thread 271 "ganesha.nfsd" received signal SIGSEGV, Segmentation fault. >> [Switching to Thread 0x7fff68053700 (LWP 31096)] >> 0x00007fffef8ca739 in release (exp_hdl=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/FSAL_VFS/export.c:79 >> 79 LogDebug(COMPONENT_FSAL, "Releasing VFS export for >> %s", >> (gdb) bt >> #0 0x00007fffef8ca739 in release (exp_hdl=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/FSAL_VFS/export.c:79 >> #1 0x000000000044799d in shutdown_export (export=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/fsal_destroyer.c:152 >> #2 0x0000000000447d66 in destroy_fsals () >> at /home/bill/rdma/nfs-ganesha/src/FSAL/fsal_destroyer.c:194 >> #3 0x000000000047d9c3 in do_shutdown () >> at /home/bill/rdma/nfs-ganesha/src/MainNFSD/nfs_admin_thread.c:511 >> #4 0x000000000047de09 in admin_thread (UnusedArg=0x0) >> at /home/bill/rdma/nfs-ganesha/src/MainNFSD/nfs_admin_thread.c:531 >> #5 0x00007ffff60b373a in start_thread (arg=0x7fff68053700) >> at pthread_create.c:333 >> #6 0x00007ffff598ae7f in clone () >> at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 >> (gdb) quit >> A debugging session is active. >> >> Inferior 1 [process 30823] will be killed. >> >> Quit anyway? (y or n) y >> [root@simpson91 install]# >> >> >> Thread 270 "ganesha.nfsd" received signal SIGSEGV, Segmentation fault. >> [Switching to Thread 0x7fff68087700 (LWP 6650)] >> 0x00007fffef8ca739 in release (exp_hdl=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/FSAL_VFS/export.c:79 >> 79 LogDebug(COMPONENT_FSAL, "Releasing VFS export for >> %s", >> (gdb) bt >> #0 0x00007fffef8ca739 in release (exp_hdl=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/FSAL_VFS/export.c:79 >> #1 0x000000000044799d in shutdown_export (export=0x61300000cec0) >> at /home/bill/rdma/nfs-ganesha/src/FSAL/fsal_destroyer.c:152 >> #2 0x0000000000447d66 in destroy_fsals () >> at /home/bill/rdma/nfs-ganesha/src/FSAL/fsal_destroyer.c:194 >> #3 0x000000000047d9c3 in do_shutdown () >> at /home/bill/rdma/nfs-ganesha/src/MainNFSD/nfs_admin_thread.c:511 >> #4 0x000000000047de09 in admin_thread (UnusedArg=0x0) >> at /home/bill/rdma/nfs-ganesha/src/MainNFSD/nfs_admin_thread.c:531 >> #5 0x00007ffff60b373a in start_thread (arg=0x7fff68087700) >> at pthread_create.c:333 >> #6 0x00007ffff5989e7f in clone () >> at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 >> (gdb) quit >> A debugging session is active. >> >> Inferior 1 [process 6378] will be killed. >> >> Quit anyway? (y or n) y >> [root@simpson91 install]# >> >> >> >> > ---------------------------------------------------------------------------- > -- >> Check out the vibrant tech community on one of the world's most engaging >> tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Nfs-ganesha-devel mailing list >> Nfs-ganesha-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Nfs-ganesha-devel mailing list > Nfs-ganesha-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Nfs-ganesha-devel mailing list Nfs-ganesha-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel
