Hi Alan!
Still something annoying (does not happen with 2.0.33, I just upgraded today):
divide error: 0000
CPU: 0
EIP: 0010:[partsize+187/284]
EFLAGS: 00010246
eax: 0002a57f ebx: 00000000 ecx: 00000000 edx: 00000000
esi: 0002a57f edi: 00000001 ebp: 00000000 esp: 015b4f00
ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018
Process fdisk (pid: 451, process nr: 9, stackpage=015b4000)
Stack: bffff824 00253a18 015b4f8c 0002a590 bffff824 0002a57f 015b4f8c 0002a590
00000001 00126518 00000000 00000000 001887e0 00253a18 0002a590 015b4f94
015b4f8c 015b4f90 bffff824 00188784 00004018 01d8bc00 01d8bc00 015b4f94
Call Trace: [bread+24/124] [scsicam_bios_param+92/196] [scsicam_bios_param+0/196] [sd_ioctl+251/804] [sys_ioctl+255/272] [system_call+85/128]
Code: f7 f3 0f af c7 01 c1 89 c8 0f af c3 89 c1 01 d9 39 74 24 2c
seems to be this one (drivers/scsi/scsicam.c)
ext_cyl= (logical_end-(end_head * end_sector + end_sector))
/(end_head + 1) / end_sector;
or at least this one
*cyls = capacity / ((end_head + 1) * end_sector);
'end_head' and 'end_sector' are unchecked.
Something like
- --- linux-pre-2.0.36-6/drivers/scsi/scsicam.c.orig Wed Sep 2 18:18:05 1998
+++ linux-pre-2.0.36-6/drivers/scsi/scsicam.c Wed Sep 2 18:19:45 1998
@@ -119,6 +119,8 @@
end_head = largest->end_head;
end_sector = largest->end_sector & 0x3f;
+ if( end_head + 1 == 0 || end_sector == 0 ) return -1;
+
#ifdef DEBUG
printk ("scsicam_bios_param : end at h = %d, c = %d, s = %d\n",
end_head, end_cyl, end_sector);
should do the job.
It happens while accessing a defective Syquest Disk (SCSI) with 'fdisk -l'.
Libc5, P75, 32MB RAM
Unfortunately, I cannot check my patch, because I don't have XS to the system
right now, but it seems resonable.
Kurt
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Win-Installation: How often do YOU want to boot today?
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