Date: Thu, 15 Apr 2010 13:30:23 +0300 From: Daniel Braniss <danny@cs.huji.ac.il> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: panic: vm_fault_copy_wired: page missing Message-ID: <E1O2ML1-000ITc-GK@kabab.cs.huji.ac.il> In-Reply-To: <20100415095152.GC2415@deviant.kiev.zoral.com.ua> References: <E1O2JP2-000FbF-No@kabab.cs.huji.ac.il> <20100415082254.GA2415@deviant.kiev.zoral.com.ua> <E1O2LXV-000HOu-Nf@kabab.cs.huji.ac.il> <20100415095152.GC2415@deviant.kiev.zoral.com.ua>
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> > --U3Zg06C/E2vtHpAW > Content-Type: text/plain; charset=us-ascii > Content-Disposition: inline > Content-Transfer-Encoding: quoted-printable > > On Thu, Apr 15, 2010 at 12:39:13PM +0300, Daniel Braniss wrote: > > >=20 > > > --xFkczX7rH1pKA3aV > > > Content-Type: text/plain; charset=3Dus-ascii > > > Content-Disposition: inline > > > Content-Transfer-Encoding: quoted-printable > > >=20 > > > On Thu, Apr 15, 2010 at 10:22:20AM +0300, Daniel Braniss wrote: > > > > Hi, > > > > I'm getting this with FreeBSD-8-stable, it usually happens when > > > > starting apache: > > > >=3D20 > > > > panic: vm_fault_copy_wired: page missing > > > > cpuid =3D3D 3 > > > > KDB: enter: panic > > > > [thread pid 1013 tid 100106 ] > > > > Stopped at kdb_enter+0x3d: movq $0,0x68f170(%rip) > > > > db> tr > > > > Tracing pid 1013 tid 100106 td 0xffffff0007a66ae0 > > > > kdb_enter() at kdb_enter+0x3d > > > > panic() at panic+0x17b > > > > vm_fault_copy_entry() at vm_fault_copy_entry+0x283 > > > > vmspace_fork() at vmspace_fork+0x4d0 > > > > fork1() at fork1+0x35f > > > > fork() at fork+0x1c > > > > syscall() at syscall+0x1e7 > > > > Xfast_syscall() at Xfast_syscall+0xe1 > > > > --- syscall (2, FreeBSD ELF64, fork), rip =3D3D 0x8009f41ac, rsp =3D3= > D 0x7fff=3D > > > ffffe7d8,=3D20 > > > > rbp =3D3D 0x800c34a80 --- > > > >=3D20 > > > > any help in tracking this? > > > >=3D20 > > > > thanks, > > > > danny > > >=20 > > > Is it true that the process started, or at least some of loaded dso > > > are from NFS mount ? > > everything is nfs :-), the host is dataless > > but redusing the amount of physical memory has solved the > > problem, so I don't think NFS is the problem. > > I do think that NFS is problem. Another key point is that your process > is mlock'ed, right ? This is kind of known issue with NFS and mlock. > well, since it's panicking again, there goes the memsize theory. this is getting weirder and weirder, it now panics on reboot: Stopping cron. Stopping sshd. ===> apache22 profile: httpd ===> apache22 profile: httpdyn Stopping inetd. Stopping ntpd. Stopping lockd. Waiting for PIDS: 1201. Stopping statd. Stopping nfsd. Stopping mountd. Stopping devd. . Apr 15 13:27:48 sf-02 syslogd: exiting on signal 15 panic: vm_fault_copy_wired: page missing cpuid = 1 KDB: enter: panic [thread pid 1014 tid 100118 ] Stopped at kdb_enter+0x3d: movq $0,0x68f7a0(%rip) db> tr Tracing pid 1014 tid 100118 td 0xffffff000533f3a0 kdb_enter() at kdb_enter+0x3d panic() at panic+0x17b vm_fault_copy_entry() at vm_fault_copy_entry+0x283 vmspace_fork() at vmspace_fork+0x4d0 fork1() at fork1+0x35f fork() at fork+0x1c syscall() at syscall+0x1e7 Xfast_syscall() at Xfast_syscall+0xe1 --- syscall (2, FreeBSD ELF64, fork), rip = 0x8009f41ac, rsp = 0x7fffffffe7d8, rbp = 0x800c34a00 ---
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