Date: Sun, 24 Dec 2023 03:30:54 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 275905] nfs client: mount becomes unresponsive Message-ID: <bug-275905-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275905 Bug ID: 275905 Summary: nfs client: mount becomes unresponsive Product: Base System Version: 14.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: lexi.freebsd@le-fay.org FreeBSD ilythia.eden.le-fay.org 14.0-RELEASE-p3 FreeBSD 14.0-RELEASE-p3 #0:= Mon Dec 11 04:56:01 UTC 2023=20=20=20=20 root@amd64-builder.daemonology.net:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 this system has an NFSv4.2 mount from a FreeBSD 14.0 server using sec=3Dkrb= 5p.=20 after a few hours of activity (mostly low-volume random reads at ~5-10Mbps throughput), the NFS mount has hung and cannot be accessed; 'df' and 'nfsst= at -m' also hang. there's no NFS network traffic and no indication in the log= s on either system of a problem. the Kerberos ticket isn't expired, and renewing the ticket anyway made no difference. according to kgdb, nfscl seems to be stuck in nfsv4_sequencelookup: (kgdb) where #0 sched_switch (td=3Dtd@entry=3D0xfffffe017c43a740, flags=3Dflags@entry= =3D259) at /usr/src/sys/kern/sched_ule.c:2297 #1 0xffffffff80b5028b in mi_switch (flags=3Dflags@entry=3D259) at /usr/src/sys/kern/kern_synch.c:548 #2 0xffffffff80ba001b in sleepq_switch (wchan=3Dwchan@entry=3D0xfffff80075= 4bd9c0, pri=3Dpri@entry=3D68) at /usr/src/sys/kern/subr_sleepqueue.c:607 #3 0xffffffff80ba05ef in sleepq_timedwait (wchan=3Dwchan@entry=3D0xfffff800754bd9c0, pri=3D68) at /usr/src/sys/kern/subr_sleepqueue.c:689 #4 0xffffffff80b4f9e0 in _sleep (ident=3Dident@entry=3D0xfffff800754bd9c0, lock=3Dlock@entry=3D0xfffff800754bd810, priority=3Dpriority@entry=3D68, wmesg=3D0xffffffff81195590 "nfsclseq", sbt=3D4294967000, pr=3Dpr@entry=3D0,= flags=3D256) at /usr/src/sys/kern/kern_synch.c:219 #5 0xffffffff809ed270 in nfsv4_sequencelookup (nmp=3Dnmp@entry=3D0xfffff802f5506000, sep=3Dsep@entry=3D0xfffff800754bd810, slotposp=3Dslotposp@entry=3D0xfffffe017b087b38, maxslotp=3Dmaxslotp@entry=3D0xfffffe017b087b34, slotseqp=3Dslotseqp@entry=3D0xfffffe017b087b3c, sessionid=3Dsessionid@entry=3D0xfffffe017b087b40 "k\214\020\201\377\377\377\377\377\242\352\200\377\377\377\377\n\340h D\257\353\v ", fnd_init=3Dfalse) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:49= 89 #6 0xffffffff809e1c39 in nfsv4_setsequence (nmp=3D0xfffff802f5506000, nd=3D0xfffffe017b087c38, sep=3D0xfffff800754bd810, dont_replycache=3D0, cred=3D0xfffff800087f3c00) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:4892 #7 0xffffffff809e12f1 in nfscl_reqstart (nd=3D0xfffffe017b087c38, procnum= =3D32, nmp=3D0xfffff802f5506000, nfhp=3D0x0, fhlen=3D0, opcntpp=3D<optimized out>, sep=3D<optimized out>, vers=3D0, minorvers=3D0, cred=3D0xfffff800087f3c00) = at /usr/src/sys/fs/nfs/nfs_commonsubs.c:433 #8 0xffffffff80a11e77 in nfsrpc_renew (clp=3D<optimized out>, dsp=3Ddsp@en= try=3D0x0, cred=3Dcred@entry=3D0xfffff800087f3c00, p=3Dp@entry=3D0xfffffe017c43a740) at /usr/src/sys/fs/nfsclient/nfs_clrpcops.c:4874 #9 0xffffffff809f7ae5 in nfscl_renewthread (clp=3Dclp@entry=3D0xfffffe0180= c75000, p=3D0xfffffe017c43a740) at /usr/src/sys/fs/nfsclient/nfs_clstate.c:2769 #10 0xffffffff80a2bde4 in start_nfscl (arg=3D<unavailable>, arg@entry=3D0xfffffe0180c75000) at /usr/src/sys/fs/nfsclient/nfs_clport.c:7= 82 #11 0xffffffff80afdb7f in fork_exit (callout=3D0xffffffff80a2bdd0 <start_nf= scl>, arg=3D0xfffffe0180c75000, frame=3D0xfffffe017b087f40) at /usr/src/sys/kern/kern_fork.c:1160 #12 <signal handler called> #13 0x00000328911e38ca in ?? () Backtrace stopped: Cannot access memory at address 0x3288e984798 (kgdb) frame 5 #5 0xffffffff809ed270 in nfsv4_sequencelookup (nmp=3Dnmp@entry=3D0xfffff802f5506000, sep=3Dsep@entry=3D0xfffff800754bd810, slotposp=3Dslotposp@entry=3D0xfffffe017b087b38, maxslotp=3Dmaxslotp@entry=3D0xfffffe017b087b34, slotseqp=3Dslotseqp@entry=3D0xfffffe017b087b3c, sessionid=3Dsessionid@entry=3D0xfffffe017b087b40 "k\214\020\201\377\377\377\377\377\242\352\200\377\377\377\377\n\340h D\257\353\v ", fnd_init=3Dfalse) at /usr/src/sys/fs/nfs/nfs_commonsubs.c:49= 89 warning: Source file is more recent than executable. 4989 mtx_sleep(&sep->nfsess_slots, &sep->nfsess_mtx, --=20 You are receiving this mail because: You are the assignee for the bug.=
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