Subject: Re: crash in ntfs read?
To: Pavel Cahyna <>
From: Steven M. Bellovin <>
List: current-users
Date: 05/12/2005 01:52:06
In message <>, Pavel Cahyna writes
>On Wed, 11 May 2005 11:14:25 -0400, Steven M. Bellovin wrote:
>> machines.  (Btw, I don't know what the panic is; gdb didn't display it,
>> and I haven't had the chance to figure out yet why not.)
>Did you try the dmesg command with the -M option to display the panic

Ah, I should have thought of that:

uvm_fault(0xcd006544, 0, 0, 2) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 2 eip c02ea777 cs 8 eflags 10282 cr2 0 ilevel 0
panic: trap
Begin traceback...
trap() at netbsd:trap+0x153
--- trap (number 6) ---
ntfs_vgetex(c1eb2000,2738,80,0,2) at netbsd:ntfs_vgetex+0x18f
ntfs_ntvattrget(c1eafa00,c31f2880,90,c075e71c,0) at netbsd:ntfs_ntvattrget+0x1b0
ntfs_ntlookupfile(c1eafa00,d73ce0b0,d7cbbe98,d7cbbe84,c26ece00) at netbsd:ntfs_ntlookupfile+0x81
ntfs_lookup(d7cbbd94,0,d7cbbdac,c0402bf2,c064f540) at netbsd:ntfs_lookup+0x1a4
VOP_LOOKUP(d73ce0b0,d7cbbe84,d7cbbe98,e,d7cbbdd4) at netbsd:VOP_LOOKUP+0x2e
lookup(d7cbbe74,cb7d0800,400,d7cbbe8c,d7cbbe24) at netbsd:lookup+0x225
namei(d7cbbe74,8061b50,60,0,8061c40) at netbsd:namei+0x124
sys___lstat13(ccf92634,d7cbbf64,d7cbbf5c,118,202) at netbsd:sys___lstat13+0x58
syscall_plain() at netbsd:syscall_plain+0x17e
--- syscall (number 280) ---
End traceback...

This is on a month-old -current, but it had been happening for a while. 

		--Prof. Steven M. Bellovin,