[Bug 204328] [NEW] Kernel panic loading mptsas module

Thu Mar 20 16:52:43 UTC 2008

Public bug reported:

Installing hardy alpha 6 on a Dell PowerEdge M600, the installer kernel
panics when modprobing mptsas:

[  176.439736] BUG: unable to handle kernel NULL pointer dereference at virtual address 00000010                                                        │   
[  176.448254] printing eip: f89cf622 *pde = 00000000 ──────────────────────┘   
[  176.453140] Oops: 0000 [#1] SMP                                              
[  176.456375] Modules linked in: sg mptsas mptscsih mptbase scsi_transport_sas af_packet sr_mod cdrom sd_mod rsrc_nonstatic pcmcia_core usbserial usbhid hid usbkbd fan usb_storage scsi_mod libusual ehci_hcd thermal evdev psmouse uhci_hcd bnx2 usbcore processor                                                           
[  176.479455]                                                                  
[  176.480939] Pid: 10954, comm: modprobe Not tainted (2.6.24-12-generic #1)    
[  176.487704] EIP: 0060:[<f89cf622>] EFLAGS: 00010246 CPU: 7                   
[  176.493174] EIP is at mptsas_probe_expander_phys+0x72/0x610 [mptsas]         
[  176.499508] EAX: 00000010 EBX: df993bc0 ECX: f6e29df4 EDX: 00000288
[  176.505755] ESI: df900800 EDI: dfa5f800 EBP: 00000000 ESP: f6e29d34
[  176.512001]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  176.517381] Process modprobe (pid: 10954, ti=f6e28000 task=f6819680 task.ti=f6e28000)
[  176.525013] Stack: 0000ffff 61747300 00656c6c 00002aca f6e29df4 df900800 00000001 00000000 
[  176.533428]        00000000 00000000 00100100 00200200 00000000 00200200 ffff124f f89e0360 
[  176.541845]        df900800 f7c8e000 00000000 70646f6d 65626f72 61747300 00656c6c 00002aca 
[  176.550265] Call Trace:
[  176.552885]  [<f89e0360>] mpt_timer_expired+0x0/0x70 [mptbase]
[  176.558713]  [<f89d17af>] mptsas_probe+0x3af/0x480 [mptsas]
[  176.564279]  [<c01d47c3>] sysfs_create_link+0x93/0x110
[  176.569414]  [<c0223526>] pci_device_probe+0x56/0x80
[  176.574372]  [<c027eab8>] driver_probe_device+0x88/0x190
[  176.579680]  [<c0212290>] kobject_uevent_env+0xf0/0x3d0
[  176.584901]  [<c027ed2e>] __driver_attach+0x9e/0xa0
[  176.589774]  [<c027deeb>] bus_for_each_dev+0x3b/0x60
[  176.594733]  [<c027e936>] driver_attach+0x16/0x20
[  176.599431]  [<c027ec90>] __driver_attach+0x0/0xa0
[  176.604215]  [<c027e26a>] bus_add_driver+0x8a/0x1e0
[  176.606754]  [<c02236d6>] __pci_register_driver+0x56/0x90
[  176.611638]  [<f884a0c2>] mptsas_init+0xc2/0xe1 [mptsas]
[  176.617041]  [<c01516c6>] sys_init_module+0x126/0x19c0
[  176.622363]  [<c0105442>] syscall_call+0x7/0xb
[  176.622367]  =======================
[  176.622367] Code: 89 44 24 20 74 1e 8b 43 0c e8 8b aa 7b c7 89 d8 e8 84 aa 7b c7 8b 44 24 20 81 c4 8c 00 00 00 5b 5e 5f 5d c3 8b 43 0c 8b 4c 24 10 <0f> b7 00 89 01 8b 44 24 14 05 3c 05 00 00 89 44 24 18 e8 e7 8a 
[  176.622379] EIP: [<f89cf622>] mptsas_probe_expander_phys+0x72/0x610 [mptsas] SS:ESP 0068:f6e29d34
[  176.622386] ---[ end trace d5327034c75fc0a7 ]---
[  176.688271] Intel ISA PCIC probe: not found.

It looks like this is a known issue and is fixed in 2.6.25-rc5. See
Bugzilla for details: http://bugzilla.kernel.org/show_bug.cgi?id=9909

I've attached the Bugzilla patch, just for additional info, but I
haven't tried applying this to 2.6.24 myself to see if it works.

I'm guessing hardy is frozen at 2.6.24 - any chance of this fix being
backported?

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Kernel panic loading mptsas module
https://bugs.launchpad.net/bugs/204328
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