Date: Tue, 20 Mar 2001 23:39:34 +0100 From: Tor.Egge@fast.no To: des@thinksec.com Cc: current@FreeBSD.ORG Subject: Re: trap in vm_fault Message-ID: <200103202239.XAA55583@midten.fast.no> In-Reply-To: Your message of "20 Mar 2001 09:18:51 %2B0100" References: <xzpwv9kq2dw.fsf@aes.thinksec.com>
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> Got this on sunday on my laptop (400 MHz PII running a week-old
> -CURRENT):
> #7 0xc0269fcd in trap_pfault (frame=0xc7be6ed8, usermode=0, eva=3332689920)
> at ../../i386/i386/trap.c:888
> #8 0xc0269404 in trap (frame={tf_fs = 24, tf_es = -1071054832, tf_ds = 16,
> tf_edi = -962277376, tf_esi = -1062592768, tf_ebp = -943821008,
> tf_isp = -943821052, tf_ebx = -1057541376, tf_edx = 368, tf_ecx = 512,
> tf_eax = -1062618816, tf_trapno = 12, tf_err = 2, tf_eip = -1072504984,
> tf_cs = 8, tf_eflags = 78406, tf_esp = -1057541376, tf_ss = -1062575520})
> at ../../i386/i386/trap.c:448
> #9 0xc012df68 in atapi_read (request=0xc0f73300, length=2352)
> at machine/cpufunc.h:227
Trying to mount a music cd might cause the atapi code to try to read
9408 bytes into a 8192 bytes long buffer.
sys/dev/ata/atapi-cd.c:
count = (bp->bio_bcount + (blocksize - 1)) / blocksize;
sys/ufs/ffs/ffs_vfsops.c:
if ((error = bread(devvp, SBLOCK, SBSIZE, cred, &bp)) != 0)
goto out;
sys/ufs/ffs/fs.h:
#define SBSIZE 8192
- Tor Egge
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