bin/120286: fusefs-ntfs makes fatal trap/page fault in FreeBSD-7.0

[Ganbold]

Kris Kennaway wrote:
> Ganbold wrote:
>> More information:
>>
>> Fatal trap 12: page fault while in kernel mode
>> cpuid = 0; apic id = 00
>> fault virtual address    = 0x746e756f
>> fault code        = supervisor read, page not present
>> instruction pointer    = 0x20:0xc06d8f46
>> stack pointer            = 0x28:0xe64189b0
>> frame pointer            = 0x28:0xe64189b4
>> 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        = 843 (mount_fusefs)
>> panic: from debugger
>> cpuid = 0
>> KDB: stack backtrace:
>> Uptime: 1m34s
>> Physical memory: 1006 MB
>> Dumping 56 MB: 41 25 9
>>
>> #0  doadump () at pcpu.h:195
>> 195    pcpu.h: No such file or directory.
>>    in pcpu.h
>> (kgdb) where
>> #0  doadump () at pcpu.h:195
>> #1  0xc064f4fe in boot (howto=260) at 
>> /usr/src/sys/kern/kern_shutdown.c:409
>> #2  0xc064f7bb in panic (fmt=Variable "fmt" is not available.
>> ) at /usr/src/sys/kern/kern_shutdown.c:563
>> #3  0xc0465d47 in db_panic (addr=Could not find the frame base for 
>> "db_panic".
>> ) at /usr/src/sys/ddb/db_command.c:433
>> #4  0xc0466735 in db_command_loop () at 
>> /usr/src/sys/ddb/db_command.c:401
>> #5  0xc0467ea5 in db_trap (type=12, code=0) at 
>> /usr/src/sys/ddb/db_main.c:222
>> #6  0xc0676b06 in kdb_trap (type=12, code=0, tf=0xe6418970) at 
>> /usr/src/sys/kern/subr_kdb.c:502
>> #7  0xc085528f in trap_fatal (frame=0xe6418970, eva=1953396079) at 
>> /usr/src/sys/i386/i386/trap.c:890
>> #8  0xc08554b0 in trap_pfault (frame=0xe6418970, usermode=0, 
>> eva=1953396079) at /usr/src/sys/i386/i386/trap.c:812
>> #9  0xc0855e52 in trap (frame=0xe6418970) at 
>> /usr/src/sys/i386/i386/trap.c:490
>> #10 0xc083c36b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
>> #11 0xc06d8f46 in strcmp (s1=0xc432044f "fspath", s2=0x746e756f 
>> <Address 0x746e756f out of bounds>) at /usr/src/sys/libkern/strcmp.c:45
>> #12 0xc06c0865 in vfs_getopt (opts=0xc09bb700, name=0xc432044f 
>> "fspath", buf=0x0, len=0x0) at /usr/src/sys/kern/vfs_mount.c:1869
>> #13 0xc4319380 in ?? ()
>> #14 0xc09bb700 in w_data ()
>> #15 0xc432044f in ?? ()
>> #16 0x00000000 in ?? ()
>> #17 0x00000000 in ?? ()
>> #18 0xc43df210 in ?? ()
>> #19 0xc43df210 in ?? ()
>> #20 0xc09b1db0 in w_lock_list_free ()
>> #21 0xc43df210 in ?? ()
>> #22 0xe6418a00 in ?? ()
>> #23 0x00000246 in ?? ()
>> #24 0xc09b1db0 in w_lock_list_free ()
>> #25 0xe6418a1c in ?? ()
>> #26 0xc064279d in _mtx_unlock_spin_flags (m=0xc3e5707c, 
>> opts=-1002573296, file=0xc08d01ce "/usr/src/sys/kern/vfs_mount.c", 
>> line=1001)
>>    at /usr/src/sys/kern/kern_mutex.c:246
>> #27 0xc06c34ad in vfs_donmount (td=0xc43df210, fsflags=0, 
>> fsoptions=0xc439c900) at /usr/src/sys/kern/vfs_mount.c:1007
>> #28 0xc06c47a2 in nmount (td=0xc43df210, uap=0xe6418cfc) at 
>> /usr/src/sys/kern/vfs_mount.c:416
>> #29 0xc0855783 in syscall (frame=0xe6418d38) at 
>> /usr/src/sys/i386/i386/trap.c:1035
>> #30 0xc083c3d0 in Xint0x80_syscall () at 
>> /usr/src/sys/i386/i386/exception.s:196
>> #31 0x00000033 in ?? ()
>> Previous frame inner to this frame (corrupt stack?)
>> (kgdb)
>
> This is not a FreeBSD bug so should be followed up with the 
> fusefs-kmod maintainer.  However, it may be due to a mismatch between 
> your kernel options and the options used to compile the fusefs 
> module.  Are you using a non-default kernel configuration?

I just checked on my laptop kernel config file and it has following 
additional options:

options         DEVICE_POLLING
options         HZ=1000

options         ALT_BREAK_TO_DEBUGGER
options         KDB                     # Enable kernel debugger support.
options         DDB                     # Support DDB.
options         GDB

options         WITNESS
options         WITNESS_KDB
options         WITNESS_SKIPSPIN
options         INVARIANTS
options         INVARIANT_SUPPORT
options         DEBUG_LOCKS
options         DEBUG_VFS_LOCKS
##options         ACPI_DEBUG
options         KDB_TRACE

I tried new fusefs-kmod and fusefs-kmod ports, but problem still exists.
...
fusefs-ntfs-1.2129
fusefs-kmod-0.3.9.p1.20080208
fusefs-libs-2.7.2
...
%


thanks,

Ganbold

>
> Kris
>
>
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