Hi,

I have a question regarding the kernel stack overflow from kernel OOPS on ARM platforms. How can I see from oops that kernel stack overflow has occurred ? Can some body explain?

Process softirq-high/0 (pid: 4, stack limit = 0xc3c24258)
Stack: (0xc3c25f10 to 0xc3c26000)

what stack limit signifies here? what is range of this stack?

e.g.

Unable to handle kernel NULL pointer dereference at virtual address 0000013c
pgd = c0004000
[0000013c] *pgd=00000000
stopped custom tracer.
Internal error: Oops: 17 [#1] PREEMPT
Modules linked in: macb
CPU: 0 Not tainted (2.6.24-rc5-rt1 #2)
pc : [<c01a9e60>] lr : [<c01a9e90>] psr: 60000093
sp : c3c25f10 ip : 0000012c fp : c3c25f1c
r10: 00000000 r9 : 00000000 r8 : 00000000
r7 : 000000ac r6 : 00000000 r5 : 0000012c r4 : 00000000
r3 : 60000093 r2 : 60000013 r1 : c3c1a340 r0 : 0000012c
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 0005317f Table: 23dcc000 DAC: 00000017
Process softirq-high/0 (pid: 4, stack limit = 0xc3c24258)
Stack: (0xc3c25f10 to 0xc3c26000)
5f00: c3c25f2c c3c25f20 c01a9e90 c01a9e20
5f20: c3c25f44 c3c25f30 c0101b84 c01a9e90 c020ab48 c020abf4 c3c25f74 c3c25f48
5f40: c0119960 c0101b78 c3c1a340 c020ac2c 000f4240 00000000 00000004 00000000
5f60: c0205b78 c02059c8 c3c25f98 c3c25f78 c003cf5c c0119560 00000001 fffffffe
5f80: c02059d4 c3c24000 00000001 c3c25fa8 c3c25f9c c003d038 c003cee4 c3c25fd8
5fa0: c3c25fac c003d9ec c003d010 00000032 c3c24000 c02059c8 c003d8a0 00000000
5fc0: 00000000 00000000 00000000 c3c25ff4 c3c25fdc c004cc94 c003d8b0 00000000
5fe0: 00000000 00000000 00000000 c3c25ff8 c003b13c c004cc4c 00000000 00000000


dinky

> Process softirq-high/0 (pid: 4, stack limit = 0xc3c24258)
The "stack limit" point to next thread information.

> Stack: (0xc3c25f10 to 0xc3c26000)
It means that kernel will dump range of stack from 0xc3c25f10 to 0xc3c26000.