Date: Sun, 19 Aug 2018 17:22:13 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 230752] panic: excl->share in newnfs_request Message-ID: <bug-230752-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230752 Bug ID: 230752 Summary: panic: excl->share in newnfs_request Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: fs@FreeBSD.org Reporter: dim@FreeBSD.org Created attachment 196354 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=196354&action=edit Text dump of newnfs_request -> witness panic I recently got a few similar panics, seemingly originating from newnfs_request. The panic goes like this: shared lock of (lockmgr) ufs @ /usr/src/sys/kern/vfs_lookup.c:671 while exclusively locked from /usr/src/sys/kern/vfs_subr.c:2590 panic: excl->share cpuid = 2 time = 1534686985 ... #1 doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:366 #2 0xffffffff8044906b in db_dump (dummy=<optimized out>, dummy2=<unavailable>, dummy3=<unavailable>, dummy4=<unavailable>) at /usr/src/sys/ddb/db_command.c:574 #3 0xffffffff80448e39 in db_command (last_cmdp=<optimized out>, cmd_table=<optimized out>, dopager=1) at /usr/src/sys/ddb/db_command.c:481 #4 0xffffffff80448bb4 in db_command_loop () at /usr/src/sys/ddb/db_command.c:534 #5 0xffffffff8044bd7f in db_trap (type=<optimized out>, code=<optimized out>) at /usr/src/sys/ddb/db_main.c:252 #6 0xffffffff80be79d5 in kdb_trap (type=3, code=0, tf=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:693 #7 0xffffffff81084c3a in trap (frame=0xfffffe0000582fc0) at /usr/src/sys/amd64/amd64/trap.c:605 #8 <signal handler called> #9 kdb_enter (why=0xffffffff8131179d "panic", msg=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:479 #10 0xffffffff80b9d7b1 in vpanic (fmt=<optimized out>, ap=0xfffffe0000583130) at /usr/src/sys/kern/kern_shutdown.c:852 #11 0xffffffff80b9d550 in kassert_panic (fmt=0xffffffff812a3ed5 "excl->share") at /usr/src/sys/kern/kern_shutdown.c:749 #12 0xffffffff80c083a8 in witness_checkorder (lock=0xfffff80004190ba8, flags=1, file=0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c", line=<optimized out>, interlock=0xffffffff81f64e2c <w_locklistdata+264684>) at /usr/src/sys/kern/subr_witness.c:1176 #13 0xffffffff80b70c3e in lockmgr_slock_hard (lk=<optimized out>, flags=2106368, ilk=0xfffff80004190bd8, file=<optimized out>, line=<optimized out>, lwa=<optimized out>) at /usr/src/sys/kern/kern_lock.c:567 #14 0xffffffff80b71d5b in __lockmgr_args (lk=<optimized out>, flags=<optimized out>, ilk=<optimized out>, wmesg=<optimized out>, pri=<optimized out>, timo=<optimized out>, file=0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c", line=671) at /usr/src/sys/kern/kern_lock.c:1195 #15 0xffffffff80ec6a05 in _lockmgr_args (lk=0xfffff80004190ba8, flags=2106368, ilk=<optimized out>, wmesg=<optimized out>, prio=0, timo=0, file=<optimized out>, line=18) at /usr/src/sys/sys/lockmgr.h:104 #16 ffs_lock (ap=0xfffffe00005833c8) at /usr/src/sys/ufs/ffs/ffs_vnops.c:428 #17 0xffffffff81208059 in VOP_LOCK1_APV ( vop=0xffffffff81b62d50 <ffs_vnodeops2>, a=0xfffffe00005833c8) at vnode_if.c:2087 #18 0xffffffff80c86927 in VOP_LOCK1 (vp=<optimized out>, flags=2106368, file=<optimized out>, line=671) at ./vnode_if.h:859 #19 _vn_lock (vp=0xfffff80004190b40, flags=2106368, file=0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c", line=671) at /usr/src/sys/kern/vfs_vnops.c:1531 #20 0xffffffff80c68fe6 in lookup (ndp=0xfffffe00005835a0) at /usr/src/sys/kern/vfs_lookup.c:669 #21 0xffffffff80c68aad in namei (ndp=0xfffffe00005835a0) at /usr/src/sys/kern/vfs_lookup.c:450 #22 0xffffffff80c49b85 in unp_connectat (fd=<optimized out>, so=<optimized out>, nam=<optimized out>, td=0xfffff800036f2000) at /usr/src/sys/kern/uipc_usrreq.c:1554 #23 0xffffffff80c3bc98 in soconnectat (fd=<optimized out>, so=<optimized out>, nam=0xfffff8000367d800, td=0xffffffff80b7d390 <_mtx_init+144>) at /usr/src/sys/kern/uipc_socket.c:1230 #24 0xffffffff80e611b9 in clnt_vc_create (so=0xfffff80004c316d0, raddr=0xfffff800035fc020, prog=553713921, vers=1, sendsz=4096, recvsz=4096, intrflag=0) at /usr/src/sys/rpc/clnt_vc.c:159 #25 0xffffffff80e60439 in clnt_reconnect_connect (cl=0xfffff80003372840) at /usr/src/sys/rpc/clnt_rc.c:193 #26 clnt_reconnect_call (cl=0xfffff80003372840, ext=0xfffffe0000583ab0, proc=1, args=0xfffff800048dda00, resultsp=0xfffffe0000583c28, utimeout=...) at /usr/src/sys/rpc/clnt_rc.c:265 #27 0xffffffff80a637ec in newnfs_request (nd=0xfffffe0000583c28, nmp=0x0, clp=0x0, nrp=0xffffffff82021a18 <nfsrv_nfsuserdsock>, vp=0x0, td=0x0, cred=0xfffff80003e65000, prog=553713921, vers=1, retsum=0x0, toplevel=0, xidp=0x0, dssep=0x0) at /usr/src/sys/fs/nfs/nfs_commonkrpc.c:818 #28 0xffffffff80a6d5f9 in nfsrv_getuser (procnum=1, uid=<optimized out>, gid=<optimized out>, name=0x0, p=0xfffffe0000582ce0) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:3616 #29 0xffffffff80a6d71a in nfsrv_getgrpscred (oldcred=0xfffff80003deec00) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:3150 #30 0xffffffff80acf53e in nfsd_excred (nd=0xfffffe0000583ff8, exp=<optimized out>, credanon=0xfffffe0000582f80) at /usr/src/sys/fs/nfsserver/nfs_nfsdport.c:2932 #31 0xffffffff80aa8104 in nfsrvd_compound (nd=<optimized out>, isdgram=0, tag=0x10 <error: Cannot access memory at address 0x10>, taglen=<optimized out>, minorvers=<optimized out>, p=<optimized out>) at /usr/src/sys/fs/nfsserver/nfs_nfsdsocket.c:1008 #32 nfsrvd_dorpc (nd=0xfffffe0000583ff8, isdgram=0, tag=0x10 <error: Cannot access memory at address 0x10>, taglen=7, minorvers=<optimized out>, p=0xfffff800036f2000) at /usr/src/sys/fs/nfsserver/nfs_nfsdsocket.c:560 #33 0xffffffff80abc3a7 in nfs_proc (xid=<optimized out>, xprt=<optimized out>, nd=<optimized out>, rpp=<optimized out>) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:387 #34 nfssvc_program (rqst=0xfffff8004d1d5800, xprt=0xfffff800035fb600) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:272 #35 0xffffffff80e68499 in svc_executereq (rqstp=<optimized out>) at /usr/src/sys/rpc/svc.c:1031 #36 svc_run_internal (grp=<optimized out>, ismaster=1) at /usr/src/sys/rpc/svc.c:1306 #37 0xffffffff80e6785e in svc_run (pool=<optimized out>) at /usr/src/sys/rpc/svc.c:1385 #38 0xffffffff80abca06 in nfsrvd_nfsd (td=<optimized out>, args=0xfffffe0000584510) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:542 #39 0xffffffff80ad298b in nfssvc_nfsd (td=0xfffff800036f2000, uap=<optimized out>) at /usr/src/sys/fs/nfsserver/nfs_nfsdport.c:3451 #40 0xffffffff80e45eeb in sys_nfssvc (td=0xfffff800036f2000, uap=0xfffff800036f23c0) at /usr/src/sys/nfs/nfs_nfssvc.c:111 #41 0xffffffff810859ef in syscallenter (td=0xfffff800036f2000) at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135 #42 amd64_syscall (td=0xfffff800036f2000, traced=0) at /usr/src/sys/amd64/amd64/trap.c:1029 #43 <signal handler called> #44 0x00000008002dee8a in ?? () I'm adding core.txt.2 for reference. Full core dump available on request. -- You are receiving this mail because: You are the assignee for the bug.home | help
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