Re: udev-095 problem with gregkh-all-2.6.22-rc3

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On Fri, 2007-06-01 at 10:51 -0400, Alan Stern wrote:
> Greg and Kay:
> 
> When I boot 2.6.22-rc3 plus gregkh-all-2.6.22-rc3.patch, with an FC6
> system (which includes a no-doubt somewhat altered version of udev
> 095), I get the follow message:
> 
> [   32.898870] kernel BUG at block/ll_rw_blk.c:3728!
> [   32.898922] invalid opcode: 0000 [#1]
> [   32.898971] PREEMPT SMP 
> [   32.899088] Modules linked in: evdev e100 ohci_hcd ehci_hcd mii uhci_hcd usbcore
> [   32.899433] CPU:    0
> [   32.899435] EIP:    0060:[<c01c6770>]    Not tainted VLI
> [   32.899437] EFLAGS: 00010246   (2.6.22-rc3 #1)
> [   32.899590] EIP is at put_io_context+0x12/0x7c
> [   32.899642] eax: cf0391e0   ebx: cf0391e0   ecx: cf1be000   edx: c01cccd4
> [   32.899698] esi: 00000010   edi: cf13b480   ebp: cf1bff4c   esp: cf1bff44
> [   32.899753] ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
> [   32.899808] Process start_udev (pid: 948, ti=cf1be000 task=cf13b480 task.ti=cf1be000)
> [   32.899864] Stack: c02a6727 cf0391e0 cf1bff58 c01c9364 cf1bff80 cf1bff94 c012439e cf643478 
> [   32.900242]        cf1bffb0 c011979c 00000001 00000000 00000001 cf13b534 c010402c cf1bff80 
> [   32.900620]        cf1bff80 cf0d11c0 00000000 00575284 cf1bffa8 c0124436 00000000 00575284 
> [   32.900997] Call Trace:
> [   32.901086]  [<c0104fa1>] show_trace_log_lvl+0x1a/0x2f
> [   32.901177]  [<c0105053>] show_stack_log_lvl+0x9d/0xa5
> [   32.901265]  [<c0105248>] show_registers+0x1ed/0x32c
> [   32.901354]  [<c0105497>] die+0x110/0x211
> [   32.901440]  [<c0105622>] do_trap+0x8a/0xa3
> [   32.901527]  [<c010598d>] do_invalid_op+0x88/0x92
> [   32.901614]  [<c02a6aaa>] error_code+0x72/0x78
> [   32.901703]  [<c01c9364>] exit_io_context+0x6d/0x70
> [   32.901792]  [<c012439e>] do_exit+0x6bd/0x6e5
> [   32.901881]  [<c0124436>] sys_exit_group+0x0/0x11
> [   32.901968]  [<c0124445>] sys_exit_group+0xf/0x11
> [   32.902055]  [<c0103f5a>] sysenter_past_esp+0x5f/0x99
> [   32.902144]  =======================
> [   32.902192] Code: ff eb 14 89 90 c0 01 00 00 89 90 c4 01 00 00 89 88 90 00 00 00 31 c0 c9 c3 55 89 e5 53 83 ec 04 89 c3 85 c0 74 6b 83 38 00 75 04 <0f> 0b eb fe 90 ff 08 0f 94 c0 84 c0 74 58 b8 01 00 00 00 e8 86 
> [   32.904543] EIP: [<c01c6770>] put_io_context+0x12/0x7c SS:ESP 0068:cf1bff44
> [   32.904718] Fixing recursive fault but reboot is needed!
> 
> This doesn't happen under vanilla 2.6.22-rc3.

> Is this udev's fault or is it a problem in the kernel?  If it is udev's 
> fault, is it fixed in more recent versions?

Maybe it's a bug in:
  driver/block-device.patch
in Greg's tree. It converts blockdevs from raw kobjects to devices.

Is this reproducible? It always happens? 

Are you using initramfs?

What's the setting for CONFIG_SYSFS_DEPRECATED?

Care to comment out the block patch in the series file in Greg's tree
and try if it works?

Thanks,
Kay

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