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SubjectRe: [WATCHDOG] v2.6.26 hpwdt.c fixes
On Wed, Jun 18, 2008 at 01:09:43PM -0700, Linus Torvalds wrote:
>
>
> On Wed, 18 Jun 2008, Wim Van Sebroeck wrote:
> >
> > Revert "[WATCHDOG] hpwdt: Fix NMI handling."
> >
> > To get this driver working we need the CFLAGS_hpwdt.o += -O in the Makefile.
> >
> > The driver needs the asmlinkage tag and the CFLAGS line in the Makefile.
> > Without it the driver doesn't work.
>
> The driver is unbelievable shit, and should just be removed, I think.

FWIW, we coincidentally got the below oops reported yesterday.
This was against 2.6.25.4, but this doesn't seem related to the NMI path,
so probably unfixed ?

Dave


BUG: unable to handle kernel paging request at 5bf393fd
IP: [<f6559dc8>]
*pdpt = 00000000369a4001 *pde = 0000000000000000
Oops: 0000 [#1] SMP
Modules linked in: hpwdt(+) ipmi_si(+) sg iTCO_wdt ipmi_msghandler i5000_edac
button iTCO_vendor_support bnx2 sr_mod edac_core joydev pcspkr cdrom ata_piix
libata cciss sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last
unloaded: scsi_wait_scan]

Pid: 1141, comm: modprobe Not tainted (2.6.25.4-10.fc8PAE #1)
EIP: 0060:[<f6559dc8>] EFLAGS: 00210286 CPU: 1
EIP is at 0xf6559dc8
EAX: 5f32335f EBX: 000f0000 ECX: 00cd0100 EDX: 00000000
ESI: d0ffffff EDI: c39bd09b EBP: f6559da8 ESP: f6559d78
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process modprobe (pid: 1141, ti=f6559000 task=f6570e70 task.ti=f6559000)
Stack: f89694a9 f7920060 f655007b 00200286 f7927000 ffffffed f6559da8 f6559da8
c00ffee0 00000000 000f1fff c00f0000 f6559dc8 c00f0000 c00ffee0 f6559dc8
c00f0000 f896a5d0 f896a5a0 f7927000 f6559ddc c050659d f7927054 00000000
Call Trace:
[<f89694a9>] ? hpwdt_init_one+0x18b/0x3a3 [hpwdt]
[<c050659d>] ? pci_device_probe+0x39/0x5b
[<c056a66b>] ? driver_probe_device+0xc0/0x137
[<c056a806>] ? __driver_attach+0x73/0xa9
[<c0569baf>] ? bus_for_each_dev+0x37/0x5c
[<c056a4f0>] ? driver_attach+0x14/0x16
[<c056a793>] ? __driver_attach+0x0/0xa9
[<c056a2fd>] ? bus_add_driver+0x90/0x1b7
[<c056a9fc>] ? driver_register+0x47/0xa2
[<c0506740>] ? __pci_register_driver+0x35/0x61
[<f88c8017>] ? hpwdt_init+0x17/0x19 [hpwdt]
[<c044649d>] ? sys_init_module+0x1610/0x177a
[<c062e63c>] ? do_page_fault+0x528/0x909
[<c0437238>] ? param_get_int+0x0/0x15
[<c0484bd3>] ? do_sync_read+0x0/0xe9
[<c0485896>] ? sys_read+0x3b/0x60
[<c0404b7a>] ? syscall_call+0x7/0xb
=======================
Code: 00 00 00 ff 1f 0f 00 00 00 0f c0 c8 9d 55 f6 00 00 0f c0 e0 fe 0f c0 c8 9d
55 f6 00 00 0f c0 d0 a5 96 f8 a0 a5 96 f8 00 70 92 f7 <dc> 9d 55 f6 9d 65 50 c0
54 70 92 f7 00 <6>udev: renamed network interface eth0 to eth10
00 00 00 d0 a5 96 f8 f4
EIP: [<f6559dc8>] 0xf6559dc8 SS:ESP 0068:f6559d78
---[ end trace f60151d50a977a2e ]---


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