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Subject2.5.47: Oops on mount() (Alpha164 SX)
Hi all,

after (again) trying to run a recent kernel (2.5.47) on my alpha,
mount() oopses in __copy_user() (See attached decoded Oops trace).
Initial mount of the root-filesystem works; /sbin/mount gives:

/dev/sdc1 on / type ext2 (rw,errors=remount-ro)
proc on /proc type proc (rw)

Apart from this system boots up, only the root-fs is mounted read-only
(since the /sbin/mount failed). Hence the entry for /proc is a lie,
since proc is actually _not_ mounted.

This happened since at least 2.5.41; kernels before that were even
refusing to boot. System is AlphaPC164 SX, recently upgraded Debian 3,
kernel compiled with gcc-2.95.4, mount-2.11w; all of which should be
recent enough, at least according to Changes document ...

If someone in the know could have a look at this I'd be very grateful.
At the moment it's a bit annoying; the last kernel to actually _run_ on
this machine are the 2.4.XX series.

Please cc me directly; I'not (anymore) on lkml.

Best regards,

Hannes

Unable to handle kernel paging request at virtual address 000000012002a000
mount(229): Oops 0
pc = [<fffffc000043ba40>] ra = [<fffffc00003890e0>] ps = 0000 Not tainted
v0 = 00000000000002a0 t0 = 0000000000000000 t1 = 000000012002a2a0
t2 = 0000000000000000 t3 = 00000000000002a0 t4 = fffffc000057a858
t5 = fffffc001f38bd60 t6 = 000000012002a000 t7 = fffffc001f444000
s0 = 00000001200282a0 s1 = fffffc001f38a000 s2 = fffffc001f447ef8
s3 = 0000000120028320 s4 = 00000000c0ed0000 s5 = 000000011ffffeed
s6 = 0000000120028230
a0 = fffffc0000bacd90 a1 = 0000000000000000 a2 = 0000000000002000
a3 = 00000000c0ed0000 a4 = 0000000120028320 a5 = 000000011ffffb88
t8 = 0000000000002000 t9 = 0000020000144d20 t10= 0000000000000008
t11= 00000200001bd960 pv = fffffc000043b940 at = fffffc0000389148
gp = fffffc000064a268 sp = fffffc001f447ea8
Trace:fffffc00003899c0 fffffc00003130e4
Code: f41ffff5 c3e00013 e480000a 2ffe0000 47ff041f 2ffe0000 <a4270000> 4081
1524
Error (Oops_code_to_file): Unable to open mkstemp file '/tmp/ksymoops.usm2Gf'

/usr/src/ksymoops-2.4.7/ksymoops: Read-only file system


>>RA; fffffc00003890e0 <copy_mount_options+40/140>

>>PC; fffffc000043ba40 <__copy_user+100/1d4> <=====

Trace; fffffc00003899c0 <sys_mount+40/160>
Trace; fffffc00003130e4 <entSys+a4/c0>

Unable to handle kernel paging request at virtual address 000000012002a000
mount(230): Oops 0
pc = [<fffffc000043ba40>] ra = [<fffffc00003890e0>] ps = 0000 Not tainted
v0 = 00000000000002a0 t0 = 0000000000000000 t1 = 000000012002a2a0
t2 = 0000000000000000 t3 = 00000000000002a0 t4 = fffffc000057a858
t5 = fffffc001f453d60 t6 = 000000012002a000 t7 = fffffc001f178000
s0 = 00000001200282a0 s1 = fffffc001f452000 s2 = fffffc001f17bef8
s3 = 0000000120028320 s4 = 00000000c0ed0000 s5 = 000000011ffffeee
s6 = 0000000120028230
a0 = fffffc0000baecd0 a1 = 0000000000000000 a2 = 0000000000002000
a3 = 00000000c0ed0000 a4 = 0000000120028320 a5 = 000000011ffffb88
t8 = 0000000000002000 t9 = 0000020000144d20 t10= 0000000000000008
t11= 00000200001bd960 pv = fffffc000043b940 at = fffffc0000389148
gp = fffffc000064a268 sp = fffffc001f17bea8
Trace:fffffc00003899c0 fffffc00003130e4
Code: f41ffff5 c3e00013 e480000a 2ffe0000 47ff041f 2ffe0000 <a4270000> 4081
1524
Error (Oops_code_to_file): Unable to open mkstemp file '/tmp/ksymoops.7yNjvH'

/usr/src/ksymoops-2.4.7/ksymoops: Read-only file system


>>RA; fffffc00003890e0 <copy_mount_options+40/140>

>>PC; fffffc000043ba40 <__copy_user+100/1d4> <=====

Trace; fffffc00003899c0 <sys_mount+40/160>
Trace; fffffc00003130e4 <entSys+a4/c0>


1 warning and 8 errors issued. Results may not be reliable.
:
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