Matt, Any thoughts for a potential fix? Thanks, Vandana From: Matt Benjamin <mbenjami@redhat.com> Date: Tuesday, July 23, 2019 at 7:37 AM To: "Rungta, Vandana" <vrungta@amazon.com> Cc: "devel@lists.nfs-ganesha.org" <devel@lists.nfs-ganesha.org> Subject: Re: [NFS-Ganesha-Devel] Segfault in Ntirpc with V2.7.6 Looks to be a problem in the v4.1 slot cache. Matt On Thu, Jul 18, 2019 at 11:52 PM Rungta, Vandana <vrungta@amazon.com<mailto:vrungta@amazon.com>> wrote: Segfault because resarray_val == 0 with status = NFS4ERR_RETRY_UNCACHED_REP ( Not mdcache this time ☺ ) Thanks, Vandana [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `bin/ganesha.nfsd -f etc/ganesha/ganesha.conf -p var/run/ganesha.pid -F'. Program terminated with signal 11, Segmentation fault. #0 0x000000000044b87d in xdr_enum (xdrs=0xaa693f0, ep=0x0) at /src/src/libntirpc/ntirpc/rpc/xdr_inline.h:405 405 /src/src/libntirpc/ntirpc/rpc/xdr_inline.h: No such file or directory. Missing separate debuginfos, use: debuginfo-install sgw-nfs-ganesha-2.0.108.0-1.x86_64 (gdb) bt #0 0x000000000044b87d in xdr_enum (xdrs=0xaa693f0, ep=0x0) at /src/src/libntirpc/ntirpc/rpc/xdr_inline.h:405 #1 0x0000000000453b5a in xdr_nfs_opnum4 (xdrs=0xaa693f0, objp=0x0) at /src/src/include/nfsv41.h:8065 #2 0x0000000000454bbb in xdr_nfs_resop4 (xdrs=0xaa693f0, objp=0x0) at /src/src/include/nfsv41.h:8433 #3 0x000000000044c1ba in xdr_array_encode (xdrs=0xaa693f0, cpp=0x17d9d6a0, sizep=0x17d9d698, maxsize=1024, selem=160, xdr_elem=0x454b98 <xdr_nfs_resop4>) at /src/src/libntirpc/ntirpc/rpc/xdr_inline.h:851 #4 0x000000000044c33b in xdr_array (xdrs=0xaa693f0, cpp=0x17d9d6a0, sizep=0x17d9d698, maxsize=1024, selem=160, xdr_elem=0x454b98 <xdr_nfs_resop4>) at /src/src/libntirpc/ntirpc/rpc/xdr_inline.h:894 #5 0x0000000000455c1a in xdr_COMPOUND4res (xdrs=0xaa693f0, objp=0x17d9d680) at /src/src/include/nfsv41.h:8779 #6 0x00007fd34e041e78 in svcauth_none_wrap (req=0x78bde5f0, xdrs=0xaa693f0) at /src/src/libntirpc/src/svc_auth_none.c:45 #7 0x00007fd34e04a234 in svc_vc_reply (req=0x78bde5f0) at /src/src/libntirpc/src/svc_vc.c:889 #8 0x00007fd34e041468 in svc_sendreply (req=0x78bde5f0) at /src/src/libntirpc/src/svc.c:501 #9 0x0000000000458016 in nfs_rpc_process_request (reqdata=0x78bde5f0) at /src/src/MainNFSD/nfs_worker_thread.c:1384 #10 0x000000000045859d in nfs_rpc_valid_NFS (req=0x78bde5f0) at /src/src/MainNFSD/nfs_worker_thread.c:1538 #11 0x00007fd34e04a034 in svc_vc_decode (req=0x78bde5f0) at /src/src/libntirpc/src/svc_vc.c:829 #12 0x000000000044b005 in nfs_rpc_decode_request (xprt=0x7aa0ac20, xdrs=0x442a6340) at /src/src/MainNFSD/nfs_rpc_dispatcher_thread.c:1345 #13 0x00007fd34e049f45 in svc_vc_recv (xprt=0x7aa0ac20) at /src/src/libntirpc/src/svc_vc.c:802 #14 0x00007fd34e046689 in svc_rqst_xprt_task (wpe=0x7aa0ae38) at /src/src/libntirpc/src/svc_rqst.c:769 #15 0x00007fd34e046ae6 in svc_rqst_epoll_events (sr_rec=0x1f2e4f0, n_events=1) at /src/src/libntirpc/src/svc_rqst.c:941 #16 0x00007fd34e046d7b in svc_rqst_epoll_loop (sr_rec=0x1f2e4f0) at /src/src/libntirpc/src/svc_rqst.c:1014 #17 0x00007fd34e046e2e in svc_rqst_run_task (wpe=0x1f2e4f0) at /src/src/libntirpc/src/svc_rqst.c:1050 #18 0x00007fd34e04f7f6 in work_pool_thread (arg=0x7af1a1b0) at /src/src/libntirpc/src/work_pool.c:181 #19 0x00007fd34d06dde5 in start_thread () from /lib64/libpthread.so.0 #20 0x00007fd34c974f1d in clone () from /lib64/libc.so.6 (gdb) select-frame 5 (gdb) print objp $1 = (COMPOUND4res *) 0x17d9d680 (gdb) print *objp $2 = {status = NFS4ERR_RETRY_UNCACHED_REP, tag = {utf8string_len = 0, utf8string_val = 0x0}, resarray = {resarray_len = 2, resarray_val = 0x0}} (gdb) _______________________________________________ Devel mailing list -- devel@lists.nfs-ganesha.org<mailto:devel@lists.nfs-ganesha.org> To unsubscribe send an email to devel-leave@lists.nfs-ganesha.org<mailto:devel-leave@lists.nfs-ganesha.org> -- Matt Benjamin Red Hat, Inc. 315 West Huron Street, Suite 140A Ann Arbor, Michigan 48103 http://www.redhat.com/en/technologies/storage tel. 734-821-5101 fax. 734-769-8938 cel. 734-216-5309