Softlock OOPS dump

[Fredrick]

On 02/05/2012 11:13 PM, devendra rawat wrote:
>
> Hi All,
>
> I am having a PPC system running Windriver linux. System is restarting
> because of watchdog.
> System was restated because no scheduling took place for 15.7 seconds. I
> want to figure out which function/ISR/routine
> was the kernel executing when this softlockup happened and at what place
> was the execution going. The NIP (next instruction pointer) reg. is not
> giving the
> symbol name as the "switch" module that created the problem was
> dynamically loaded.
> Can anybody help in figuring out the exact routine that may be behind
> the lockup.
>
>   I am getting the following OOPS.
>
>
>
> cpu0: jiffies: 1903983223, hrtime: 16746998586843980, 15756 ms between
> scheduler_tick() calls
>   31/12/1969 EST 19:00:00, BUG: soft lockup detected on CPU#0!
> 31/12/1969 EST 19:00:00, NIP: C0041FAC LR: C0042320 SP: C71AFB10 REGS:
> c71afa60 TRAP: 0901    Tainted: P
>   31/12/1969 EST 19:00:00, MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
>   31/12/1969 EST 19:00:00, TASK = cef2c880[1224] 'switch' THREAD: c71ae000
>   31/12/1969 EST 19:00:00, Last syscall: 54
>   31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00, GPR00:
> 31/12/1969 EST 19:00:00, C017D5E4
> 31/12/1969 EST 19:00:00, C71AFB10
> 31/12/1969 EST 19:00:00, CEF2C880
> 31/12/1969 EST 19:00:00, 00000020
>   31/12/1969 EST 19:00:00, C71AFC20
> 31/12/1969 EST 19:00:00, D04C7F80
> 31/12/1969 EST 19:00:00, C036A774
>   31/12/1969 EST 19:00:00, 0000001C
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00, GPR08:
> 31/12/1969 EST 19:00:00, C036BF48
>   31/12/1969 EST 19:00:00, 00000000
> 31/12/1969 EST 19:00:00, 0000F10C
> 31/12/1969 EST 19:00:00, 00000000
> 31/12/1969 EST 19:00:00, 2410C042
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00, NIP [c0041fac]
> 31/12/1969 EST 19:00:00, handle_IRQ_event+0x254/0x4d4
>   31/12/1969 EST 19:00:00, LR [c0042320]
> 31/12/1969 EST 19:00:00, __do_IRQ+0xf4/0x164
> 31/12/1969 EST 19:00:00, Call trace
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [c0042320]
> 31/12/1969 EST 19:00:00, __do_IRQ+0xf4/0x16
> 31/12/1969 EST 19:00:00,
>   31/12/1969 EST 19:00:00,  [c0006c64]
> 31/12/1969 EST 19:00:00, do_IRQ+0x54/0x10
> 31/12/1969 EST 19:00:00,
>   31/12/1969 EST 19:00:00,  [c0005214]
>   31/12/1969 EST 19:00:00, ret_from_except+0x0/0x1
> 31/12/1969 EST 19:00:00,
>   31/12/1969 EST 19:00:00,  [e10cbc7c]
> 31/12/1969 EST 19:00:00, bcm_bsa_request+0x189c/0x4140 [bcm5690
>   31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [e10d09a8]
> 31/12/1969 EST 19:00:00, bcm_ioctl+0x144/0x480 [bcm5690
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [c0087764]
> 31/12/1969 EST 19:00:00, do_ioctl+0x68/0x9
>   31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [c0087850]
> 31/12/1969 EST 19:00:00, vfs_ioctl+0xb8/0x40
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [c0087e00]
> 31/12/1969 EST 19:00:00, sys_ioctl+0x268/0x38
> 31/12/1969 EST 19:00:00,
> 31/12/1969 EST 19:00:00,  [c0004a1c]
> 31/12/1969 EST 19:00:00, DoSyscall_no_dpa_entry+0x74/0x9
>
> /*****************************/
>
> Thanks in advance.
> Devendra.
>
>



It could be getting stuck in the ioctl bcm_ioctl->bcm_bsa_request+0x189c

-Fredrick

>
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