Date: Fri, 14 May 1999 08:10:53 -0500 From: "Matthew D. Fuller" <fullermd@futuresouth.com> To: Sheldon Hearn <sheldonh@uunet.co.za> Cc: Gianmarco Giovannelli <gmarco@scotty.masternet.it>, "'current@freebsd.org'" <current@FreeBSD.ORG> Subject: Panic with screen w/info (was Re: Today's kernel crashes on starting X) Message-ID: <19990514081052.A27823@futuresouth.com> In-Reply-To: <9281.926686504@axl.noc.iafrica.com>; from Sheldon Hearn on Fri, May 14, 1999 at 02:55:04PM %2B0200 References: <19990514073929.A26478@futuresouth.com> <9281.926686504@axl.noc.iafrica.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Well, this apparently doesn't involve X, only screen.
(X may still be broken/flaky, but this doesn't involve it specifically)
This time I just ran screen on a vty, and *poof*
------
Looking at the trace below, does this look like a (if not the) problem?
#10 0xc0162490 in ttyflush (tp=0xc029dc20, rw=3) at ../../kern/tty.c:1192
1192 (*devsw(tp->t_dev)->d_stop)(tp, rw);
(kgdb) print tp
$1 = (struct tty *) 0xc30010b2
(kgdb) print tp->t_dev
Cannot access memory at address 0xc300110a.
------
I can keep this trace and compile tree around for a good while, just let
me know what to poke at and I'll prod it. Panic msg and trace below.
------
Fatal trap 12: page fault while in kernel mode
mp_lock = 01000002; cpuid = 1; lapic.id = 0c000000
fault virtual address = 0x14
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0162490
stack pointer = 0x10:0xcb1c9d4c
frame pointer = 0x10:0xcb1c9d60
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 = 372 (screen-3.7.6)
interrupt mask = tty <- SMP: XXX
panic: from debugger
mp_lock = 01000003; cpuid = 1; lapic.id = 0c000000
boot() called on cpu#1
#0 boot (howto=256) at ../../kern/kern_shutdown.c:288
#1 0xc014f6ed in panic (fmt=0xc0253514 "from debugger") at
../../kern/kern_shutdown.c:451
#2 0xc012c899 in db_panic (addr=-1072290672, have_addr=0, count=-1,
modif=0xcb1c9bc8 "")
at ../../ddb/db_command.c:434
#3 0xc012c839 in db_command (last_cmdp=0xc027e870, cmd_table=0xc027e6d0,
aux_cmd_tablep=0xc029ac78) at ../../ddb/db_command.c:334
#4 0xc012c8fe in db_command_loop () at ../../ddb/db_command.c:456
#5 0xc012ea5f in db_trap (type=12, code=0) at ../../ddb/db_trap.c:71
#6 0xc0213982 in kdb_trap (type=12, code=0, regs=0xcb1c9d0c)
at ../../i386/i386/db_interface.c:157
#7 0xc02265c2 in trap_fatal (frame=0xcb1c9d0c, eva=20) at
../../i386/i386/trap.c:912
#8 0xc0226259 in trap_pfault (frame=0xcb1c9d0c, usermode=0, eva=20)
at ../../i386/i386/trap.c:810
#9 0xc0225ecf in trap (frame={tf_fs = -2147483624, tf_es = -1054801904,
tf_ds = 16777232,
tf_edi = -2147483648, tf_esi = 3, tf_ebp = -887317152, tf_isp =
-887317192,
tf_ebx = -1070998496, tf_edx = 0, tf_ecx = 16777217, tf_eax = 0,
tf_trapno = 12,
tf_err = 0, tf_eip = -1072290672, tf_cs = 8, tf_eflags = 66178,
tf_esp = -1070998496,
tf_ss = 3}) at ../../i386/i386/trap.c:436
#10 0xc0162490 in ttyflush (tp=0xc029dc20, rw=3) at ../../kern/tty.c:1192
#11 0xc0161bf1 in ttioctl (tp=0xc029dc20, cmd=2147775504,
data=0xcb1c9ecc, flag=3)
at ../../kern/tty.c:803
#12 0xc01650fe in ptyioctl (dev=0xf700, cmd=2147775504, data=0xcb1c9ecc
"\003", flag=3,
p=0xc9d9ea20) at ../../kern/tty_pty.c:740
#13 0xc0181ad0 in spec_ioctl (ap=0xcb1c9e08) at
../../miscfs/specfs/spec_vnops.c:441
#14 0xc01812f1 in spec_vnoperate (ap=0xcb1c9e08) at
../../miscfs/specfs/spec_vnops.c:129
#15 0xc01f64c9 in ufs_vnoperatespec (ap=0xcb1c9e08) at
../../ufs/ufs/ufs_vnops.c:2327
#16 0xc017c045 in vn_ioctl (fp=0xc1196bc0, com=2147775504,
data=0xcb1c9ecc "\003",
p=0xc9d9ea20) at vnode_if.h:395
#17 0xc015b73f in ioctl (p=0xc9d9ea20, uap=0xcb1c9f80) at
../../kern/sys_generic.c:564
#18 0xc0226886 in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 134697096,
tf_esi = 134672224, tf_ebp = -1077951692, tf_isp = -887316524,
tf_ebx = 672221300,
tf_edx = 134697128, tf_ecx = 6, tf_eax = 54, tf_trapno = 12, tf_err
= 2,
tf_eip = 671965400, tf_cs = 31, tf_eflags = 582, tf_esp =
-1077951716, tf_ss = 47})
at ../../i386/i386/trap.c:1066
#19 0xc02143a5 in Xint0x80_syscall ()
------
--
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
| Matthew Fuller MF4839 http://www.over-yonder.net/ |
* fullermd@futuresouth.com fullermd@over-yonder.net *
| UNIX Systems Administrator Specializing in FreeBSD |
* FutureSouth Communications ISPHelp ISP Consulting *
| "The only reason I'm burning my candle at both ends, |
* is because I haven't figured out how to light the *
| middle yet" |
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19990514081052.A27823>