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=3D230752 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=3D196354&action= =3Dedit Text dump of newnfs_request -> witness panic I recently got a few similar panics, seemingly originating from newnfs_requ= est. 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 =3D 2 time =3D 1534686985 ... #1 doadump (textdump=3D<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:366 #2 0xffffffff8044906b in db_dump (dummy=3D<optimized out>,=20 dummy2=3D<unavailable>, dummy3=3D<unavailable>, dummy4=3D<unavailable>) at /usr/src/sys/ddb/db_command.c:574 #3 0xffffffff80448e39 in db_command (last_cmdp=3D<optimized out>,=20 cmd_table=3D<optimized out>, dopager=3D1) at /usr/src/sys/ddb/db_comman= d.c:481 #4 0xffffffff80448bb4 in db_command_loop () at /usr/src/sys/ddb/db_command.c:534 #5 0xffffffff8044bd7f in db_trap (type=3D<optimized out>, code=3D<optimize= d out>) at /usr/src/sys/ddb/db_main.c:252 #6 0xffffffff80be79d5 in kdb_trap (type=3D3, code=3D0, tf=3D<optimized out= >) at /usr/src/sys/kern/subr_kdb.c:693 #7 0xffffffff81084c3a in trap (frame=3D0xfffffe0000582fc0) at /usr/src/sys/amd64/amd64/trap.c:605 #8 <signal handler called> #9 kdb_enter (why=3D0xffffffff8131179d "panic", msg=3D<optimized out>) at /usr/src/sys/kern/subr_kdb.c:479 #10 0xffffffff80b9d7b1 in vpanic (fmt=3D<optimized out>, ap=3D0xfffffe00005= 83130) at /usr/src/sys/kern/kern_shutdown.c:852 #11 0xffffffff80b9d550 in kassert_panic (fmt=3D0xffffffff812a3ed5 "excl->sh= are") at /usr/src/sys/kern/kern_shutdown.c:749 #12 0xffffffff80c083a8 in witness_checkorder (lock=3D0xfffff80004190ba8,=20 flags=3D1, file=3D0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c",= =20 line=3D<optimized out>,=20 interlock=3D0xffffffff81f64e2c <w_locklistdata+264684>) at /usr/src/sys/kern/subr_witness.c:1176 #13 0xffffffff80b70c3e in lockmgr_slock_hard (lk=3D<optimized out>,=20 flags=3D2106368, ilk=3D0xfffff80004190bd8, file=3D<optimized out>,=20 line=3D<optimized out>, lwa=3D<optimized out>) at /usr/src/sys/kern/kern_lock.c:567 #14 0xffffffff80b71d5b in __lockmgr_args (lk=3D<optimized out>,=20 flags=3D<optimized out>, ilk=3D<optimized out>, wmesg=3D<optimized out>= ,=20 pri=3D<optimized out>, timo=3D<optimized out>,=20 file=3D0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c", line=3D671) at /usr/src/sys/kern/kern_lock.c:1195 #15 0xffffffff80ec6a05 in _lockmgr_args (lk=3D0xfffff80004190ba8,=20 flags=3D2106368, ilk=3D<optimized out>, wmesg=3D<optimized out>, prio= =3D0,=20 timo=3D0, file=3D<optimized out>, line=3D18) at /usr/src/sys/sys/lockmg= r.h:104 #16 ffs_lock (ap=3D0xfffffe00005833c8) at /usr/src/sys/ufs/ffs/ffs_vnops.c:= 428 #17 0xffffffff81208059 in VOP_LOCK1_APV ( vop=3D0xffffffff81b62d50 <ffs_vnodeops2>, a=3D0xfffffe00005833c8) at vnode_if.c:2087 #18 0xffffffff80c86927 in VOP_LOCK1 (vp=3D<optimized out>, flags=3D2106368,= =20 file=3D<optimized out>, line=3D671) at ./vnode_if.h:859 #19 _vn_lock (vp=3D0xfffff80004190b40, flags=3D2106368,=20 file=3D0xffffffff8130d3f0 "/usr/src/sys/kern/vfs_lookup.c", line=3D671) at /usr/src/sys/kern/vfs_vnops.c:1531 #20 0xffffffff80c68fe6 in lookup (ndp=3D0xfffffe00005835a0) at /usr/src/sys/kern/vfs_lookup.c:669 #21 0xffffffff80c68aad in namei (ndp=3D0xfffffe00005835a0) at /usr/src/sys/kern/vfs_lookup.c:450 #22 0xffffffff80c49b85 in unp_connectat (fd=3D<optimized out>,=20 so=3D<optimized out>, nam=3D<optimized out>, td=3D0xfffff800036f2000) at /usr/src/sys/kern/uipc_usrreq.c:1554 #23 0xffffffff80c3bc98 in soconnectat (fd=3D<optimized out>,=20 so=3D<optimized out>, nam=3D0xfffff8000367d800,=20 td=3D0xffffffff80b7d390 <_mtx_init+144>) at /usr/src/sys/kern/uipc_socket.c:1230 #24 0xffffffff80e611b9 in clnt_vc_create (so=3D0xfffff80004c316d0,=20 raddr=3D0xfffff800035fc020, prog=3D553713921, vers=3D1, sendsz=3D4096,= =20 recvsz=3D4096, intrflag=3D0) at /usr/src/sys/rpc/clnt_vc.c:159 #25 0xffffffff80e60439 in clnt_reconnect_connect (cl=3D0xfffff80003372840) at /usr/src/sys/rpc/clnt_rc.c:193 #26 clnt_reconnect_call (cl=3D0xfffff80003372840, ext=3D0xfffffe0000583ab0,= =20 proc=3D1, args=3D0xfffff800048dda00, resultsp=3D0xfffffe0000583c28,=20 utimeout=3D...) at /usr/src/sys/rpc/clnt_rc.c:265 #27 0xffffffff80a637ec in newnfs_request (nd=3D0xfffffe0000583c28, nmp=3D0x= 0,=20 clp=3D0x0, nrp=3D0xffffffff82021a18 <nfsrv_nfsuserdsock>, vp=3D0x0, td= =3D0x0,=20 cred=3D0xfffff80003e65000, prog=3D553713921, vers=3D1, retsum=3D0x0, to= plevel=3D0,=20 xidp=3D0x0, dssep=3D0x0) at /usr/src/sys/fs/nfs/nfs_commonkrpc.c:818 #28 0xffffffff80a6d5f9 in nfsrv_getuser (procnum=3D1, uid=3D<optimized out>= ,=20 gid=3D<optimized out>, name=3D0x0, p=3D0xfffffe0000582ce0) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:3616 #29 0xffffffff80a6d71a in nfsrv_getgrpscred (oldcred=3D0xfffff80003deec00) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:3150 #30 0xffffffff80acf53e in nfsd_excred (nd=3D0xfffffe0000583ff8,=20 exp=3D<optimized out>, credanon=3D0xfffffe0000582f80) at /usr/src/sys/fs/nfsserver/nfs_nfsdport.c:2932 #31 0xffffffff80aa8104 in nfsrvd_compound (nd=3D<optimized out>, isdgram=3D= 0,=20 tag=3D0x10 <error: Cannot access memory at address 0x10>,=20 taglen=3D<optimized out>, minorvers=3D<optimized out>, p=3D<optimized o= ut>) at /usr/src/sys/fs/nfsserver/nfs_nfsdsocket.c:1008 #32 nfsrvd_dorpc (nd=3D0xfffffe0000583ff8, isdgram=3D0,=20 tag=3D0x10 <error: Cannot access memory at address 0x10>, taglen=3D7,=20 minorvers=3D<optimized out>, p=3D0xfffff800036f2000) at /usr/src/sys/fs/nfsserver/nfs_nfsdsocket.c:560 #33 0xffffffff80abc3a7 in nfs_proc (xid=3D<optimized out>,=20 xprt=3D<optimized out>, nd=3D<optimized out>, rpp=3D<optimized out>) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:387 #34 nfssvc_program (rqst=3D0xfffff8004d1d5800, xprt=3D0xfffff800035fb600) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:272 #35 0xffffffff80e68499 in svc_executereq (rqstp=3D<optimized out>) at /usr/src/sys/rpc/svc.c:1031 #36 svc_run_internal (grp=3D<optimized out>, ismaster=3D1) at /usr/src/sys/rpc/svc.c:1306 #37 0xffffffff80e6785e in svc_run (pool=3D<optimized out>) at /usr/src/sys/rpc/svc.c:1385 #38 0xffffffff80abca06 in nfsrvd_nfsd (td=3D<optimized out>,=20 args=3D0xfffffe0000584510) at /usr/src/sys/fs/nfsserver/nfs_nfsdkrpc.c:= 542 #39 0xffffffff80ad298b in nfssvc_nfsd (td=3D0xfffff800036f2000,=20 uap=3D<optimized out>) at /usr/src/sys/fs/nfsserver/nfs_nfsdport.c:3451 #40 0xffffffff80e45eeb in sys_nfssvc (td=3D0xfffff800036f2000,=20 uap=3D0xfffff800036f23c0) at /usr/src/sys/nfs/nfs_nfssvc.c:111 #41 0xffffffff810859ef in syscallenter (td=3D0xfffff800036f2000) at /usr/src/sys/amd64/amd64/../../kern/subr_syscall.c:135 #42 amd64_syscall (td=3D0xfffff800036f2000, traced=3D0) 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. --=20 You are receiving this mail because: You are the assignee for the bug.=
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