Floppy oops on umount, 2.3.38

From: Magnus Sjoegren (mcs@mbox303.swipnet.se)
Date: Wed Jan 12 2000 - 11:55:49 EST

Hello,

This is 100% reproducable.

Options used: -V (default)
              -o /lib/modules/2.3.38/ (default)
              -k /proc/ksyms (default)
              -l /proc/modules (default)
              -m /System.map (specified)
              -c 1 (default)

Unable to handle kernel NULL pointer dereference at virtual address
00000008
c019c233
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c019c233>]
EFLAGS: 00010246
eax: c34d0000 ebx: 00000000 ecx: 00000000 edx: c34d0000
esi: c3fcd120 edi: fffffff4 ebp: 00000200 esp: c34a1f60
ds: 0018 es: 0018 ss: 0018
Process umount (pid: 123, stackpage=c34a1000)
Stack: fffffff4 c0132c4f c34db940 00000000 c3fcd120 00000200 00000000
00000000
       c0130fde c3fcd120 00000002 00000000 08050200 c3492220 c0131111
00000200
       00000000 c34a0000 08050849 0804c81d bffffa28 c013112c 08050848
00000000
Call Trace: [<c0132c4f>] [<c0130fde>] [<c0131111>] [<c013112c>]
[<c01097f4>]
Code: 8b 41 08 50 51 e8 c3 61 f9 ff be a0 94 28 c0 8d 04 5b 8d 04

>>EIP: c019c233 <floppy_release+23/a0>
Trace: c0132c4f <blkdev_put+8f/f0>
Trace: c0130fde <umount_dev+9e/110>
Trace: c0131111 <sys_umount+c1/d0>
Trace: c013112c <sys_oldumount+c/10>
Trace: c01097f4 <system_call+34/40>
Code: c019c233 <floppy_release+23/a0> 00000000 <_EIP>: <===
Code: c019c233 <floppy_release+23/a0> 0: 8b 41 08
                mov 0x8(%ecx),%eax <===
Code: c019c236 <floppy_release+26/a0> 3: 50
                push %eax
Code: c019c237 <floppy_release+27/a0> 4: 51
                push %ecx
Code: c019c238 <floppy_release+28/a0> 5: e8 c3 61 f9 ff
                call c0132400 <block_fsync+0/20>
Code: c019c23d <floppy_release+2d/a0> a: be a0 94 28 c0
                mov $0xc02894a0,%esi
Code: c019c242 <floppy_release+32/a0> f: 8d 04 5b
                lea (%ebx,%ebx,2),%eax
Code: c019c245 <floppy_release+35/a0> 12: 8d 04 00
                lea (%ebx,%ebx,2),%eax

17 warnings issued. Results may not be reliable. 

--
Magnus Sjögren <mcs@mbox303.swipnet.se>

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This archive was generated by hypermail 2b29 : Sat Jan 15 2000 - 21:00:20 EST