> > I confirm that your patch at least solves the initialisation issues.
> > I'll test later with some ieee devices and I'll report back if I found
> > other issues.
>
> Any news on that, Stelian ?
Well, mixed success. I've done just some simple tests with an Apple
iPod (seen as a firewire drive). When plugged in, it is automatically
recognized and hotplug loads sbp2, which sees the drive and the two
partitions.
Mounted it, did a dd if=/dev/zero of=/mnt/ipod bs=1M count=1024.
It stalled without transferring anything. Strange.
Interrupted the dd, relaunched, all worked correctly this time. I've
tried several times but unable to reproduce the stall. Copied several
files from/to the iPod without problems.
Umounted, rmmod sbp2, unplugged the iPod. Replugged the ipod, try
to remount.
Three different behaviours follow, all reproductible (!):
* correct behaviour, the mount succeeds
* mount hangs. wchan is 'end' (?)
* mount oopses, see the report below.
Is this better or not than the -pre7 version ? Honestly I don't know,
there were problems with the old one too (however the old version
reacted to plug/unplug mount/umount events by freezing hard the
laptop, while the new one just oopses, so this is an improvement
from some point of view...)
Stelian.
ksymoops 2.4.5 on i686 2.4.21-rc1. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.21-rc1/ (default)
-m /boot/System.map-2.4.21-rc1 (default)
Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.
CPU: 20000805 23:30 official release 4.1.4#2
WARNING: USB Mass Storage data integrity not assured
ds: no socket drivers loaded!
cs: IO port probe 0x0c00-0x0cff: clean.
cs: IO port probe 0x0100-0x04ff: excluding 0x170-0x177 0x370-0x377 0x4d0-0x4d7
cs: IO port probe 0x0a00-0x0aff: clean.
cs: memory probe 0xa0000000-0xa0ffffff: clean.
Unable to handle kernel NULL pointer dereference at virtual address 00000004
c78b99f4
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c78b99f4>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010212
eax: 00000000 ebx: c115ba60 ecx: c78b9940 edx: c6d9dc00
esi: 00000001 edi: c4f7e3c0 ebp: 00000010 esp: c4f0befc
ds: 0018 es: 0018 ss: 0018
Process mount (pid: 931, stackpage=c4f0b000)
Stack: c115ba60 c02f0e50 c014f47f fffffffa c502a2c0 c6f7e2a0 c6f7e2bc 00000812
c0140d83 c4f7e3c0 c502a2c0 00000000 c502a2c0 c4f7e3c0 ffffffe9 c113e2e0
c0140e78 c6f7e2a0 c4f7e3c0 c502a2c0 c502a2c0 c4f7e3c0 c0139463 c4f7e3c0
Call Trace: [<c014f47f>] [<c0140d83>] [<c0140e78>] [<c0139463>] [<c0139388>]
[<c0139723>] [<c01090ff>]
Code: 8b 40 04 85 c0 74 10 ff 40 10 8b 43 10 8b 40 24 8b 40 04 83
>>EIP; c78b99f4 <[sd_mod]sd_open+b4/230> <=====
>>ebx; c115ba60 <_end+e48b88/74f7188>
>>ecx; c78b9940 <[sd_mod]sd_open+0/230>
>>edx; c6d9dc00 <_end+6a8ad28/74f7188>
>>edi; c4f7e3c0 <_end+4c6b4e8/74f7188>
>>esp; c4f0befc <_end+4bf9024/74f7188>
Trace; c014f47f <new_inode+f/50>
Trace; c0140d83 <do_open+123/150>
Trace; c0140e78 <blkdev_open+38/50>
Trace; c0139463 <dentry_open+d3/1d0>
Trace; c0139388 <filp_open+68/70>
Trace; c0139723 <sys_open+53/a0>
Trace; c01090ff <system_call+33/38>
Code; c78b99f4 <[sd_mod]sd_open+b4/230>
00000000 <_EIP>:
Code; c78b99f4 <[sd_mod]sd_open+b4/230> <=====
0: 8b 40 04 mov 0x4(%eax),%eax <=====
Code; c78b99f7 <[sd_mod]sd_open+b7/230>
3: 85 c0 test %eax,%eax
Code; c78b99f9 <[sd_mod]sd_open+b9/230>
5: 74 10 je 17 <_EIP+0x17>
Code; c78b99fb <[sd_mod]sd_open+bb/230>
7: ff 40 10 incl 0x10(%eax)
Code; c78b99fe <[sd_mod]sd_open+be/230>
a: 8b 43 10 mov 0x10(%ebx),%eax
Code; c78b9a01 <[sd_mod]sd_open+c1/230>
d: 8b 40 24 mov 0x24(%eax),%eax
Code; c78b9a04 <[sd_mod]sd_open+c4/230>
10: 8b 40 04 mov 0x4(%eax),%eax
Code; c78b9a07 <[sd_mod]sd_open+c7/230>
13: 83 00 00 addl $0x0,(%eax)
1 warning issued. Results may not be reliable.
-- Stelian Pop <stelian.pop@fr.alcove.com> Alcove - http://www.alcove.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/