Hi I am trying to compile and install a custom kernel. I am doing this inside the vmware player 5 on FreeBSD 9.0. Followed the exact same steps listed in this link http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-building.html
Complication and install went well. However, when the custom kernel boots up, it pages faults on vfs_donmount.
After opening the core, the backtrace doesn't seem to be valid.
Anyone know how to solve this ? Am I missing something in the kernel configure ?
Thank you.
Complication and install went well. However, when the custom kernel boots up, it pages faults on vfs_donmount.
Code:
ada0: <VMware Virtual IDE Hard Drive 00000001> ATA-4 device
ada0: 33.300MB/s transfers (UDMA2, PIO 32768bytes)
ada0: 20480MB (41943040 512 byte sectors: 15H 63S/T 16383C)
ada0: Previously was known as ad0
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ada0p2 [rw]...
VMware memory control driver initialized
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc0b4db5e
stack pointer = 0x28:0xee7f0980
frame pointer = 0x28:0xee7f0990
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 = 1392 (vmware-vmblockmount)
trap number = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xc0af6e9f at kdb_backtrace+0x4f
#1 0xc0ac39df at panic+0x16f
#2 0xc0e29953 at trap_fatal+0x323
#3 0xc0e29a58 at trap_pfault+0xf8
#4 0xc0e2a9da at trap+0x46a
#5 0xc0e13fbc at calltrap+0x6
#6 0xc8d8c288 at os_panic+0x468
#7 0xc0b4facd at vfs_donmount+0xc1d
#8 0xc0b508af at sys_nmount+0x7f
#9 0xc0e2a0ca at syscall+0x34a
#10 0xc0e14021 at Xint0x80_syscall+0x21
Uptime: 11s
Physical memory: 2031 MB
Dumping 119 MB: 104 88 72 56 40 24 8
Dump completeAfter opening the core, the backtrace doesn't seem to be valid.
Code:
[root@ /usr/obj/usr/src/sys/MYKERNEL]# kgdb kernel.debug /var/crash/vmcore.4
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd"...
Unread portion of the kernel message buffer:
stack pointer = 0x28:0xee7f0980
frame pointer = 0x28:0xee7f0990
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 = 1392 (vmware-vmblockmount)
trap number = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xc0af6e9f at kdb_backtrace+0x4f
#1 0xc0ac39df at panic+0x16f
#2 0xc0e29953 at trap_fatal+0x323
#3 0xc0e29a58 at trap_pfault+0xf8
#4 0xc0e2a9da at trap+0x46a
#5 0xc0e13fbc at calltrap+0x6
#6 0xc8d8c288 at os_panic+0x468
#7 0xc0b4facd at vfs_donmount+0xc1d
#8 0xc0b508af at sys_nmount+0x7f
#9 0xc0e2a0ca at syscall+0x34a
#10 0xc0e14021 at Xint0x80_syscall+0x21
Uptime: 11s
Physical memory: 2031 MB
Dumping 119 MB: 104 88 72 56 40 24 8
Reading symbols from /boot/modules/vmxnet.ko...done.
Loaded symbols for /boot/modules/vmxnet.ko
Reading symbols from /boot/modules/vmxnet3.ko...done.
Loaded symbols for /boot/modules/vmxnet3.ko
Reading symbols from /boot/modules/vmmemctl.ko...done.
Loaded symbols for /boot/modules/vmmemctl.ko
Reading symbols from /boot/modules/vmblock.ko...done.
Loaded symbols for /boot/modules/vmblock.ko
#0 0xee7f0788 in ?? ()
(kgdb) bt
#0 0xee7f0788 in ?? ()
(kgdb) p vfs_donmount
$1 = {int (struct thread *, uint64_t, struct uio *)} 0xc0b4eeb0 <vfs_donmount>
(kgdb) p 0xc0b4eeb0+0xc1d
$2 = 3233086157
(kgdb) l *3233086157
0xc0b4facd is in vfs_donmount (/usr/src/sys/kern/vfs_mount.c:819).
814 /*
815 * Mount the filesystem.
816 * XXX The final recipients of VFS_MOUNT just overwrite the ndp they
817 * get. No freeing of cn_pnbuf.
818 */
819 error = VFS_MOUNT(mp);
820 if (error != 0) {
821 vfs_unbusy(mp);
822 vfs_mount_destroy(mp);
823 VI_LOCK(vp);Anyone know how to solve this ? Am I missing something in the kernel configure ?
Thank you.
