Date: Fri, 21 Apr 2006 23:39:04 +0100 From: Mark Cullen <mark.r.cullen@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: 4-STABLE panic, samba related maybe? Message-ID: <44495F08.2060104@gmail.com> In-Reply-To: <44494916.2050004@gmail.com> References: <44494916.2050004@gmail.com>
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Mark Cullen wrote:
> I know 4.x is outdated and all that, and soon to be unsupported
> (probably very much unsupported already) but I thought I'd post anyway.
> I'm not ready to move to 5 / 6.
>
> I just got this panic while copying an old website to a new folder via
> samba, deleting it again (didn't quite work as expected you see), and
> then trying to use 'vi' over ssh to edit apache config file. It seemed
> to panic as soon as I hit enter for the vi command.
>
> ----
> (root@bone)/usr/home/crash# uname -a
> FreeBSD bone.bone.servebeer.com 4.11-STABLE FreeBSD 4.11-STABLE #0: Thu
> Mar 16 08:35:46 GMT 2006
> mrboo@bone.bone.servebeer.com:/usr/obj/usr/src/sys/BONE i386
> (root@bone)/usr/home/crash# gdb -k /kernel.debug vmcore.3
> GNU gdb 4.18 (FreeBSD)
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read
> called at
> /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
> line 2627 in elfstab_build_psymtabs
> Deprecated bfd_read called at
> /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
> line 933 in fill_symbuf
>
> IdlePTD at physical address 0x003df000
> initial pcb at physical address 0x00330860
> panicstr: page fault
> panic messages:
> ---
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x14
> fault code = supervisor read, page not present
> instruction pointer = 0x8:0xc02a933a
> stack pointer = 0x10:0xca51dd34
> frame pointer = 0x10:0xca51dd64
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, def32 1, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 89353 (sshd)
> interrupt mask = tty
> trap number = 12
> panic: page fault
>
> syncing disks... 50 1
> done
> Uptime: 35d16h43m46s
>
> dumping to dev #ad/0x20001, offset 725120
> dump ata0: resetting devices .. done
> 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140
> 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122
> 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104
> 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
> 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57
> 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
> 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
> 7 6 5 4 3 2 1 0
> \^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@\^@
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>
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>
> ---
> #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
> 487 if (dumping++) {
> (kgdb) bt
> #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
> #1 0xc017f008 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316
> #2 0xc017f43c in poweroff_wait (junk=0xc02f9eac, howto=-1070622289)
> at /usr/src/sys/kern/kern_shutdown.c:595
> #3 0xc02aab03 in trap_fatal (frame=0xca51dcf4, eva=20)
> at /usr/src/sys/i386/i386/trap.c:974
> #4 0xc02aa7c5 in trap_pfault (frame=0xca51dcf4, usermode=0, eva=20)
> at /usr/src/sys/i386/i386/trap.c:867
> #5 0xc02aa37b in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = -1058013168,
> tf_edi = -900604532, tf_esi = 20, tf_ebp = -900604572,
> tf_isp = -900604640, tf_ebx = 92, tf_edx = 128, tf_ecx = 23,
> tf_eax = -900604552, tf_trapno = 12, tf_err = 0, tf_eip =
> -1070951622,
> tf_cs = 8, tf_eflags = 66070, tf_esp = 0, tf_ss = -1059805096})
> at /usr/src/sys/i386/i386/trap.c:466
> #6 0xc02a933a in generic_bcopy ()
> #7 0xc019966b in ptcread (dev=0xc032f114, uio=0xca51ded4, flag=8323088)
> at /usr/src/sys/kern/tty_pty.c:457
> #8 0xc01b9bb6 in spec_read (ap=0xca51de68)
> at /usr/src/sys/miscfs/specfs/spec_vnops.c:253
> #9 0xc0259cb8 in ufsspec_read (ap=0xca51de68)
> at /usr/src/sys/ufs/ufs/ufs_vnops.c:1798
> #10 0xc025a359 in ufs_vnoperatespec (ap=0xca51de68)
> at /usr/src/sys/ufs/ufs/ufs_vnops.c:2394
> #11 0xc01b5c98 in vn_read (fp=0xc14ca680, uio=0xca51ded4, cred=0xc10d1b80,
> flags=0, p=0xca46b3c0) at vnode_if.h:334
> #12 0xc018e63b in dofileread (p=0xca46b3c0, fp=0xc14ca680, fd=9,
> buf=0xbfbfb3b0, nbyte=16384, offset=-1, flags=0)
> at /usr/src/sys/sys/file.h:147
> #13 0xc018e4ff in read (p=0xca46b3c0, uap=0xca51df80)
> at /usr/src/sys/kern/sys_generic.c:117
> #14 0xc02aadbd in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
> tf_edi = 134839056, tf_esi = 134840832, tf_ebp = -1077939280,
> tf_isp = -900603948, tf_ebx = 9, tf_edx = 134839056, tf_ecx = 9,
> tf_eax = 3, tf_trapno = 7, tf_err = 2, tf_eip = 673732972, tf_cs =
> 31,
> tf_eflags = 659, tf_esp = -1077955708, tf_ss = 47})
> at /usr/src/sys/i386/i386/trap.c:1175
> #15 0xc029c0f5 in Xint0x80_syscall ()
> #16 0x8069a43 in ?? ()
> #17 0x8069e39 in ?? ()
> #18 0x8069f2f in ?? ()
> #19 0x8053c9b in ?? ()
> #20 0x805a386 in ?? ()
> #21 0x8056c6b in ?? ()
> #22 0x804f13c in ?? ()
> #23 0x804c56e in ?? ()
> (kgdb) l *0xc02a933a
> No source file for address 0xc02a933a.
> (kgdb) l *0xc019966b
> 0xc019966b is in ptcread (/usr/src/sys/kern/tty_pty.c:458).
> 453 }
> 454 if (pti->pt_flags & (PF_PKT|PF_UCNTL))
> 455 error = ureadc(0, uio);
> 456 while (uio->uio_resid > 0 && error == 0) {
> 457 cc = q_to_b(&tp->t_outq, buf,
> min(uio->uio_resid, BUFSIZ));
> 458 if (cc <= 0)
> 459 break;
> 460 error = uiomove(buf, cc, uio);
> 461 }
> 462 ttwwakeup(tp);
> (kgdb) l *0xc01b9bb6
> 0xc01b9bb6 is in spec_read (/usr/src/sys/miscfs/specfs/spec_vnops.c:253).
> 248
> 249 if (uio->uio_resid == 0)
> 250 return (0);
> 251
> 252 VOP_UNLOCK(vp, 0, p);
> 253 error = (*devsw(dev)->d_read) (dev, uio, ap->a_ioflag);
> 254 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
> 255 return (error);
> 256 }
> 257
> (kgdb) l *0xc0259cb8
> 0xc0259cb8 is in ufsspec_read (/usr/src/sys/ufs/ufs/ufs_vnops.c:1798).
> 1793 struct inode *ip;
> 1794 struct uio *uio;
> 1795
> 1796 uio = ap->a_uio;
> 1797 resid = uio->uio_resid;
> 1798 error = VOCALL(spec_vnodeop_p, VOFFSET(vop_read), ap);
> 1799 /*
> 1800 * The inode may have been revoked during the call, so
> it must not
> 1801 * be accessed blindly here or in the other wrapper
> functions.
> 1802 */
> (kgdb) l *0xc025a359
> 0xc025a359 is in ufs_vnoperatespec (/usr/src/sys/ufs/ufs/ufs_vnops.c:2394).
> 2389 ufs_vnoperatespec(ap)
> 2390 struct vop_generic_args /* {
> 2391 struct vnodeop_desc *a_desc;
> 2392 } */ *ap;
> 2393 {
> 2394 return (VOCALL(ufs_specop_p, ap->a_desc->vdesc_offset,
> ap));
> 2395 }
> (kgdb) l *0xc01b5c98
> 0xc01b5c98 is in vn_read (vnode_if.h:334).
> 329 a.a_desc = VDESC(vop_read);
> 330 a.a_vp = vp;
> 331 a.a_uio = uio;
> 332 a.a_ioflag = ioflag;
> 333 a.a_cred = cred;
> 334 rc = VCALL(vp, VOFFSET(vop_read), &a);
> 335 return (rc);
> 336 }
> 337 struct vop_write_args {
> 338 struct vnodeop_desc *a_desc;
> (kgdb) l *0xc018e63b
> 0xc018e63b is in dofileread (/usr/src/sys/sys/file.h:147).
> 142 int flags;
> 143 {
> 144 int error;
> 145
> 146 fhold(fp);
> 147 error = (*fp->f_ops->fo_read)(fp, uio, cred, flags, p);
> 148 fdrop(fp, p);
> 149 return (error);
> 150 }
> 151
> (kgdb) l *0xc018e4ff
> 0xc018e4ff is in read (/usr/src/sys/kern/sys_generic.c:117).
> 112 register struct file *fp;
> 113 int error;
> 114
> 115 if ((fp = holdfp(p->p_fd, uap->fd, FREAD)) == NULL)
> 116 return (EBADF);
> 117 error = dofileread(p, fp, uap->fd, uap->buf, uap->nbyte,
> (off_t)-1, 0);
> 118 fdrop(fp, p);
> 119 return(error);
> 120 }
> 121
> (kgdb) l *0xc02aadbd
> 0xc02aadbd is in syscall2 (/usr/src/sys/i386/i386/trap.c:1175).
> 1170 p->p_retval[0] = 0;
> 1171 p->p_retval[1] = frame.tf_edx;
> 1172
> 1173 STOPEVENT(p, S_SCE, narg); /* MP aware */
> 1174
> 1175 error = (*callp->sy_call)(p, args);
> 1176
> 1177 /*
> 1178 * MP SAFE (we may or may not have the MP lock at this
> point)
> 1179 */
> (kgdb)
>
>
> ---
>
> Is anyone able to help me out?
>
> Also, I have no idea what those \^@ characters are after the dump. I
> have had random garbage printed out after dumping on the last two panics
> ( seems you can't use softupdates on a vinum volume )
>
> [...core #2 garbage example...]
>
> dumping to dev #ad/0x20001, offset 725120
> dump ata0: resetting devices .. done
> 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140
> 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122
> 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104
> 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
> 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57
> 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
> 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
> 7 6 5 4 3 2 1 0 ions not recoverable if the session fails\^[[m \^[[H
> WARNING: R/W mount of /usr denied. Filesystem is not clean - run fsck
> WARNING: /usr was not properly dismounted
> ---
> #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487
> 487 if (dumping++) {
> (kgdb)
>
>
> Thanks in advance for any assitance. Not well seasoned in the art of
> kernel debugging so if you need output of any commands from the
> debugging kernel do let me know!
>
It seems a very similar looking panic was observed in 4.9-PRERELEASE
back in 2003.
http://lists.freebsd.org/pipermail/freebsd-ports-bugs/2003-October/014880.html
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