I built from sources cvsup'ed about 24 hours ago, my kernel and world,
this afternoon. After enabling INVARIANTS and INVARIANT_SUPPORT, I
booted and tried a lot of things. Nothing seemed to make the new kernel
I had (and it's own modules + world) go crazy ;)
However, when I tried to run cdcontrol on my ATAPI cdrom, the kernel
paniced and instantly rebooted. The related kgdb output for the crash
dump is attached.
My kernel version is:
FreeBSD hades.hell.gr 5.0-CURRENT FreeBSD 5.0-CURRENT #0:
Thu Mar 23 04:43:04 EET 2000
[EMAIL PROTECTED]:/usr/src/sys/compile/HADES i386
Seems that it crashed in acdopen(). My version of atapi-cd.c is 1.52.
- Giorgos Keramidas
# gdb -k kernel.debug /var/crash/vmcore.6
GNU gdb 4.18
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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.
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This GDB was configured as "i386-unknown-freebsd"...
IdlePTD 2973696
initial pcb at 263ca0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01c8c78
stack pointer = 0x10:0xc55add88
frame pointer = 0x10:0xc55add94
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 = 299 (cdcontrol)
interrupt mask = none
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01c8c78
stack pointer = 0x10:0xc55add88
frame pointer = 0x10:0xc55add94
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 = 299 (cdcontrol)
interrupt mask = none
panic: from debugger
panic: from debugger
Uptime: 7m59s
dumping to dev #ad/0x20001, offset 65536
dump ata0: resetting devices .. done
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 boot (howto=256) at ../../kern/kern_shutdown.c:304
304 dumppcb.pcb_cr3 = rcr3();
(kgdb) bt
#0 boot (howto=256) at ../../kern/kern_shutdown.c:304
#1 0xc01367a5 in panic (fmt=0xc0222e0f "page fault")
at ../../kern/kern_shutdown.c:554
#2 0xc01ed71a in trap_fatal (frame=0xc55f3d48, eva=0)
at ../../i386/i386/trap.c:924
#3 0xc01ed3cd in trap_pfault (frame=0xc55f3d48, usermode=0, eva=0)
at ../../i386/i386/trap.c:817
#4 0xc01ecf53 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, tf_edi = 1,
tf_esi = -1057903872, tf_ebp = -983614060, tf_isp = -983614092,
tf_ebx = -1057896448, tf_edx = 1, tf_ecx = -983626240, tf_eax = 0,
tf_trapno = 12, tf_err = 0, tf_eip = -1071864696, tf_cs = 8,
tf_eflags = 66118, tf_esp = -983330496, tf_ss = -1057903872})
at ../../i386/i386/trap.c:423
#5 0xc01ca488 in acdopen (dev=0xc0f1ab00, flags=1, fmt=8192, p=0xc55f0e00)
at ../../dev/ata/atapi-cd.c:497
#6 0xc016cd6d in spec_open (ap=0xc55f3e10)
at ../../miscfs/specfs/spec_vnops.c:191
#7 0xc016cc6d in spec_vnoperate (ap=0xc55f3e10)
at ../../miscfs/specfs/spec_vnops.c:117
#8 0xc01a2b21 in ufs_vnoperatespec (ap=0xc55f3e10)
at ../../ufs/ufs/ufs_vnops.c:2301
#9 0xc016773b in vn_open (ndp=0xc55f3edc, fmode=1, cmode=1197)
at vnode_if.h:189
#10 0xc01636d1 in open (p=0xc55f0e00, uap=0xc55f3f80)
at ../../kern/vfs_syscalls.c:994
#11 0xc01ed952 in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 1, tf_esi = -1, tf_ebp = -1077937768, tf_isp = -983613484,
tf_ebx = -1077938792, tf_edx = 10, tf_ecx = -1077938928, tf_eax = 5,
tf_trapno = 12, tf_err = 2, tf_eip = 672262868, tf_cs = 31,
tf_eflags = 647, tf_esp = -1077938836, tf_ss = 47})
at ../../i386/i386/trap.c:1073
#12 0xc01e1846 in Xint0x80_syscall ()
#13 0x80491ea in ?? ()
#14 0x8048e9d in ?? ()
#15 0x8048b6d in ?? ()
(kgdb) f 11
#11 0xc01ed952 in syscall (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 1, tf_esi = -1, tf_ebp = -1077937768, tf_isp = -983613484,
tf_ebx = -1077938792, tf_edx = 10, tf_ecx = -1077938928, tf_eax = 5,
tf_trapno = 12, tf_err = 2, tf_eip = 672262868, tf_cs = 31,
tf_eflags = 647, tf_esp = -1077938836, tf_ss = 47})
at ../../i386/i386/trap.c:1073
1073 error = (*callp->sy_call)(p, args);
(kgdb) list 1000
995 if (rv != KERN_SUCCESS)
996 return 1;
997
998 return (0);
999 }
1000
1001 /*
1002 * System call request from POSIX system call gate interface to kernel.
1003 * Like trap(), argument is call by reference.
1004 */
(kgdb)
1005 void
1006 syscall(frame)
1007 struct trapframe frame;
1008 {
1009 caddr_t params;
1010 int i;
1011 struct sysent *callp;
1012 struct proc *p = curproc;
1013 u_quad_t sticks;
1014 int error;
# exit
