Kernel oops in rt_check_expire()

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

-------------------------------------------------------------------------------------------------------------------

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
>
> -------------------------------------------------------------------------------------------------------------------

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

Hi All,
The kerenel version is 2.6.10.

This crash happens over a period of 8-10 hours.

In the function rt_check_expire(), I suspect ptr to the route entry
i.e, "rth" to be corrupted.
Usually the value of rth is 0x80d6xxxx , but at the time of crash the
value is 0x00101000.

Can this issue be related to data structure corruption? The data
structure above rt_hash_table in the memory map may be overwriting the
index 0 of rt_hash_table.

Please let me know your comments.

Below is the log file:-

rt_check_expire..ELSE rth 80d6a640 Index 389
rt_check_expire..ELSE rth 80d6a740 Index 400
rt_check_expire..ELSE rth 80d6a840 Index 440
rt_check_expire..ELSE rth 80d6aa40 Index 506
rt_check_expire..ELSE rth 80d6ab40 Index 126
rt_check_expire..ELSE rth 80d6a740 Index 400
rt_check_expire..ELSE rth 80d6a840 Index 440
rt_check_expire..ELSE rth 80d6aa40 Index 506
rt_check_expire..ELSE rth 80d6a440 Index 17
rt_check_expire..ELSE rth 80d6a540 Index 235
rt_check_expire..ELSE rth 80d6a340 Index 358
rt_check_expire..ELSE rth 80d6a440 Index 17
rt_check_expire..ELSE rth 80d6a940 Index 107
rt_check_expire..ELSE rth 80d6a740 Index 313
rt_check_expire..ELSE rth 80d6ab40 Index 404
rt_check_expire..ELSE rth 80d6a640 Index 175
rt_check_expire..ELSE rth 80d6a740 Index 313
rt_check_expire..ELSE rth 80d6ab40 Index 404
rt_check_expire..ELSE rth 80d6a440 Index 116
rt_check_expire..ELSE rth 80d6a040 Index 310
rt_check_expire..ELSE rth 80d6a940 Index 36
rt_check_expire..ELSE rth 80d6a440 Index 116
rt_check_expire..ELSE rth 80d6a040 Index 310
rt_check_expire..ELSE rth 80d6a340 Index 22
rt_check_expire..ELSE rth 80d6aa40 Index 203
rt_check_expire..ELSE rth 80d6a640 Index 240
rt_check_expire..ELSE rth 80d6a840 Index 243
rt_check_expire..ELSE rth 80d6a340 Index 22
rt_check_expire..ELSE rth 80d6a240 Index 199
rt_check_expire..ELSE rth 80d6a440 Index 325
rt_check_expire..ELSE rth 80d6a940 Index 490
rt_check_expire..ELSE rth 80d6a140 Index 68
rt_check_expire..ELSE rth 80d6a240 Index 199
rt_check_expire..ELSE rth 80d6a440 Index 325
rt_check_expire..ELSE rth 80d6a740 Index 337
rt_check_expire..ELSE rth 80d6a340 Index 474
rt_check_expire..ELSE rth 80d6aa40 Index 150
rt_check_expire..ELSE rth 80d6a540 Index 169
rt_check_expire..ELSE rth 80d6a740 Index 337
rt_check_expire..ELSE rth 80d6a340 Index 474
rt_check_expire..ELSE rth 80d6ab40 Index 54
rt_check_expire..ELSE rth 80d6a240 Index 179
rt_check_expire..ELSE rth 80d6a140 Index 209
rt_check_expire..ELSE rth 80d6a840 Index 53
rt_check_expire..ELSE rth 80d6ab40 Index 54
rt_check_expire..ELSE rth 80d6a040 Index 176
rt_check_expire..ELSE rth 80d6aa40 Index 246
rt_check_expire..ELSE rth 80d6a540 Index 122
rt_check_expire..ELSE rth 80d6a040 Index 176
rt_check_expire..ELSE rth 80d6aa40 Index 246
rt_check_expire..ELSE rth 80d6a840 Index 507
rt_check_expire..ELSE rth 80d6ab40 Index 285
rt_check_expire..ELSE rth 80d6a640 Index 342
rt_check_expire..ELSE rth 80d6a840 Index 507
rt_check_expire..ELSE rth 80d6ab40 Index 285
rt_check_expire..ELSE rth 80d6a140 Index 318
rt_check_expire..ELSE rth 80d6a540 Index 507
rt_check_expire..ELSE rth 80d6a340 Index 99
rt_check_expire..ELSE rth 80d6a740 Index 254
rt_check_expire..ELSE rth 80d6a140 Index 318
rt_check_expire..ELSE rth 80d6a540 Index 507
rt_check_expire..ELSE rth 80d6a440 Index 28
rt_check_expire..ELSE rth 80d6a640 Index 59
rt_check_expire..ELSE rth 80d6aa40 Index 191
rt_check_expire..ELSE rth 80d6ab40 Index 437
rt_check_expire..ELSE rth 80d6a440 Index 28
rt_check_expire..ELSE rth 80d6a640 Index 59
rt_check_expire..ELSE rth 80d6a240 Index 201
rt_check_expire..ELSE rth 80d6a040 Index 400
rt_check_expire..ELSE rth 80d6a340 Index 127
rt_check_expire..ELSE rth 80d6a740 Index 162
rt_check_expire..ELSE rth 80d6a240 Index 201
rt_check_expire..ELSE rth 80d6a040 Index 400
rt_check_expire..ELSE rth 80d6a640 Index 502
rt_check_expire..ELSE rth 80d6a940 Index 313
rt_check_expire..ELSE rth 80d6a440 Index 319
rt_check_expire..ELSE rth 80d6a640 Index 502
rt_check_expire..ELSE rth 80d6a540 Index 195
rt_check_expire..ELSE rth 80d6a340 Index 491
rt_check_expire..ELSE rth 80d6a740 Index 93
rt_check_expire..ELSE rth 80d6a840 Index 126
rt_check_expire..ELSE rth 80d6ab40 Index 337
rt_check_expire..ELSE rth 80d6a540 Index 41
rt_check_expire..ELSE rth 80d6a940 Index 163
rt_check_expire..ELSE rth 80d6a040 Index 296
rt_check_expire..ELSE rth 80d6a140 Index 390

Value of rth:1010000 Index: 0 Hash_mask: 511

Thanks in advance,

Regards,
Gaurav

Jiri Slaby wrote:
> 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
> >
> > -------------------------------------------------------------------------------------------------------------------
>
> 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

Hello,

Gaurav a écrit :
> The kernel version is 2.6.10.

This is rather old.

In ChangeLog-2.6.13 :
================================================== ===================
[IPV4]: Bug fix in rt_check_expire()

- rt_check_expire() fixes (an overflow occured if size of the hash
was >= 65536)
================================================== ===================

You should consider upgrading your kernel.

And please, *please*, everyone, cut the irrelevant parts in what you
quote from the previous messages.

Hi Pascal,

Thanks for your reply.

I am trying to understand whether I am hitting at the same bug that you
have pointed me to.

The value of hash in my case is 512 and not 65536.
Do you think that with this value also stack overflow can happen?

Regards,
Gaurav




Pascal Hambourg wrote:
> Hello,
>
> Gaurav a écrit :
> > The kernel version is 2.6.10.
>
> This is rather old.
>
> In ChangeLog-2.6.13 :
> ================================================== ===================
> [IPV4]: Bug fix in rt_check_expire()
>
> - rt_check_expire() fixes (an overflow occured if size of the hash
> was >= 65536)
> ================================================== ===================
>
> You should consider upgrading your kernel.
>
> And please, *please*, everyone, cut the irrelevant parts in what you
> quote from the previous messages.