Re: Kernel oops in rt_check_expire()

Gaurav wrote:

Hi All,

I am seeing a crash in rt_check_expire. Below is the Oops info.

Does any one has an idea about the cause of this?

Thanks in advance.

Regards,
Gaurav
-------------------------------------------------------------------------------------------------------

CPU 0 Unable to handle kernel paging request at virtual address
01010020, epc == 8028c28c,
ra == 802

Oops in arch/mips/mm/fault.c::do_page_fault, line 171[#1]:
Cpu 0
$ 0   : 00000000 1000fc01 00000010 00000001
$ 4   : 000001ff 80378000 80430000 80539640
$ 8   : 00000000 00000000 80420000 00000000
$12   : 80b2b7e0 00000003 00000009 00000003
$16   : 01010000 0000ea60 80378000 005808d1
$20   : 00000020 00000040 00000000 00415e60
$24   : 00000000 c006a24c
$28   : 8046c000 8046de98 00000100 8028c30c
Hi    : 00000000
Lo    : 00000000
epc   : 8028c2f0 rt_check_expire+0xfc/0x234     Tainted: PF
ra    : 8028c30c rt_check_expire+0x118/0x234
Status: 1000fc03    KERNEL EXL IE
Cause : 10800008
BadVA : 01010020
PrId  : 0001800a
Modules linked in: ctlmtel ctlmatm ctlmeth ctlmdsl ctlmapi ctlm_sf
ctlmspi
Process ksoftirqd/0 (pid: 2, threadinfo=8046c000, task=804647c0)
Stack : 8041cc90 80420000 00000000 c006a24c 00000020 00000000 00000000
8028c1f4
        8046def0 8041b40c 00200200 00100100 80310000 8041b414 80310000
801338d8
        802f0000 8026a7fc 80b87c00 8046def0 00000000 c006a24c 80b7ff10
80b7ff10
        00000002 00000000 8041b190 00000001 00000004 802f0000 8041cc90
80420000
        802f0000 8012da80 8012e7c4 00000002 80469ef0 8012e694 80420000
00000002
        ...
Call Trace:
 [<c006a24c>] iad_osal_mutexGive+0x0/0xc0 [ctlmspi]
 [<8028c1f4>] rt_check_expire+0x0/0x234
 [<801338d8>] run_timer_softirq+0x51c/0xaa4
 [<8026a7fc>] net_rx_action+0xd8/0x2a8
 [<c006a24c>] iad_osal_mutexGive+0x0/0xc0 [ctlmspi]
 [<8012da80>] ___do_softirq+0x90/0x168
 [<8012e7c4>] ksoftirqd+0x130/0x138
 [<8012e694>] ksoftirqd+0x0/0x138
 [<8012e694>] ksoftirqd+0x0/0x138
 [<8012dc6c>] _do_softirq+0x60/0x7c
 [<8012e74c>] ksoftirqd+0xb8/0x138
 [<8012e754>] ksoftirqd+0xc0/0x138
 [<801454c0>] kthread+0x268/0x2b0
 [<801452c8>] kthread+0x70/0x2b0
 [<80103a68>] kernel_thread_helper+0x10/0x18
 [<80103a58>] kernel_thread_helper+0x0/0x18


Code: 12000012  00000000  afb40010 <8e020020> 02002021  1440fff0
02202821  3c02
8032  0c0a304d
note: ksoftirqd/0[2] exited with preempt_count 1
BUG: scheduling while atomic: ksoftirqd/0/0x00000001/2
caller is do_exit+0x924/0x12f0
Call Trace:
 [<8012a79c>] do_exit+0x924/0x12f0
 [<802e4f14>] __schedule+0x8d0/0xba0
 [<802e4f0c>] __schedule+0x8c8/0xba0
 [<80410000>] ip_auto_config+0x338/0x1158
 [<8012a79c>] do_exit+0x924/0x12f0
 [<80107bfc>] __die+0xf8/0x108
 [<8010c44c>] do_page_fault+0x14c/0x3b0
 [<c008044c>] iad_eth_start_xmit+0x180/0x4d4 [ctlmeth]
 [<8028c2f0>] rt_check_expire+0xfc/0x234
 [<8028c30c>] rt_check_expire+0x118/0x234
 [<80410000>] ip_auto_config+0x338/0x1158
 [<8014d184>] handle_IRQ_event+0x94/0x1cc
 [<8012dd14>] do_softirq+0x8c/0xb8
 [<8012dd14>] do_softirq+0x8c/0xb8
 [<8014d484>] __do_IRQ+0x1b0/0x22c
 [<8014d4d0>] __do_IRQ+0x1fc/0x22c
 [<80269724>] dev_queue_xmit+0x344/0x3ec
 [<802696ec>] dev_queue_xmit+0x30c/0x3ec
 [<8012de64>] irq_exit+0x5c/0x74
 [<8014d184>] handle_IRQ_event+0x94/0x1cc
 [<801032b4>] do_IRQ+0x24/0x3c
 [<801032ac>] do_IRQ+0x1c/0x3c
 [<8010ce60>] tlb_do_page_fault_0+0x100/0x108
 [<8014d4d0>] __do_IRQ+0x1fc/0x22c
 [<8012de64>] irq_exit+0x5c/0x74
 [<c006a24c>] iad_osal_mutexGive+0x0/0xc0 [ctlmspi]
 [<8028c30c>] rt_check_expire+0x118/0x234
 [<8028c2f0>] rt_check_expire+0xfc/0x234
 [<c006a24c>] iad_osal_mutexGive+0x0/0xc0 [ctlmspi]
 [<8028c1f4>] rt_check_expire+0x0/0x234
 [<801338d8>] run_timer_softirq+0x51c/0xaa4
 [<8026a7fc>] net_rx_action+0xd8/0x2a8
 [<c006a24c>] iad_osal_mutexGive+0x0/0xc0 [ctlmspi]
 [<8012da80>] ___do_softirq+0x90/0x168
 [<8012e7c4>] ksoftirqd+0x130/0x138
 [<8012e694>] ksoftirqd+0x0/0x138
 [<8012e694>] ksoftirqd+0x0/0x138
 [<8012dc6c>] _do_softirq+0x60/0x7c
 [<8012e74c>] ksoftirqd+0xb8/0x138
 [<8012e754>] ksoftirqd+0xc0/0x138
 [<801454c0>] kthread+0x268/0x2b0
 [<801452c8>] kthread+0x70/0x2b0
 [<80103a68>] kernel_thread_helper+0x10/0x18
 [<80103a58>] kernel_thread_helper+0x0/0x18

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You would rather post it to lkml and netdev.
Please post a kernel version and some other basic info if there is any.

regards,
-- 
http://www.fi.muni.cz/~xslaby/   Jiri Slaby