[#6868] [ltp] ltp case sigaltstack01 sometimes fail at stack overflow with stack size 65535 in trunk and branch(2011)

[#6868] [ltp] ltp case sigaltstack01 sometimes fail at stack overflow with stack size 65535 in trunk and branch

Submitted By: Vivi Li

Open Date

2011-11-04 03:54:01 Close Date

2011-11-25 01:01:19

Priority:

Medium Assignee:

Sonic Zhang

Status:

Closed Fixed In Release:

N/A

Found In Release:

2011R1 Release:

Category:

Tests Board:

N/A

Processor:

ALL Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Rejected

Uboot version or rev.:

Toolchain version or rev.:

gcc4.3-2011R1-rc2

App binary format:

N/A

Summary: [ltp] ltp case sigaltstack01 sometimes fail at stack overflow with stack size 65535 in trunk and branch

Details:

LTP test case sigaltstack01 sometimes fail at stack overflow, but stack size has been set to 65536.

This exists both in trunk and 2011r1 branch.

I didn't reproduce this manually but I can always see this bug in regression.

test@uclinux50-bf537-9960-1836:~> /opt/uClinux/bfin-uclinux/bin/bfin-uclinux-flthdr -p /home/test/work/cruise/checkouts/uclinux-dist/testsuites/ltp/ltp-full-20101031/testcases/bin/sigaltstack01

/home/test/work/cruise/checkouts/uclinux-dist/testsuites/ltp/ltp-full-20101031/testcases/bin/sigaltstack01

Magic: bFLT

Rev: 4

Build Date: Fri Nov 4 09:04:10 2011

Entry: 0x44

Data Start: 0xa660

Data End: 0xd51c

BSS End: 0x120a0

Stack Size: 0x10000

Reloc Start: 0xd51c

Reloc Count: 0x674

Flags: 0x1 ( Load-to-Ram )

test@uclinux50-bf537-9960-1836:~>

Bellow is the error log:

sigaltstack01

Application stack overflow

<5> - Please increase the stack size of the application using elf2flt -s option,

<5> and/or reduce the stack use of the application.

Deferred Exception context

CURRENT PROCESS

---crash

!!!! recovering

!!!! hit ENTER

COMM=sigaltstack01 PID=763 CPU=0

TEXT = 0x025c0040-0x025ca660 DATA = 0x025ca680-0x025cd53c

BSS = 0x025cd53c-0x025d20c0 USER-STACK = 0x025e2f54

return address: [0x025c016e]; contents of:

0x025c0140: 3041 e801 0000 0052 e801 0000 0010 0000

0x025c0150: e800 0003 e801 0000 0010 0000 e14a ffb0

0x025c0160: e10a 0000 9152 6c62 08d6 1402 00a3 [e800]

0x025c0170: 0001 3047 e14a 025c 67e0 e10a e170 9310

ADSP-BF537-0.2 500(MHz CCLK) 125(MHz SCLK) (mpu off)

Linux version 3.0.8-ADI-2011R1-svn10138 (test@uclinux50-bf537-9960-1836) (gcc version 4.3.5 (ADI-2011R1-RC2) ) #36 PREEMPT Fri Nov 4 09:01:19 CST 2011

SEQUENCER STATUS: Not tainted

SEQSTAT: 00060003 IPEND: 0008 IMASK: ffff SYSCFG: 0006

EXCAUSE : 0x3

physical IVG3 asserted : <0xffa007bc> { _trap + 0x0 }

RETE: <0x00000000> /* Maybe null pointer? */

RETN: <0x024ea000> /* kernel dynamic memory */

RETX: <0x00000480> /* Maybe fixed code section */

RETS: <0x00000400> /* Maybe fixed code section */

PC : <0x025c016e> [ sigaltstack01 + 0x12e ]

DCPLB_FAULT_ADDR: <0xffb00000> /* on-chip scratchpad */

ICPLB_FAULT_ADDR: <0x025c016e> [ sigaltstack01 + 0x12e ]

PROCESSOR STATE:

R0 : 0000000a R1 : 02599eac R2 : 02599f2c R3 : 00000003

R4 : 025d0154 R5 : 025ce178 R6 : 00000000 R7 : 00000000

P0 : 00000025 P1 : 0000001f P2 : 025d2f65 P3 : 025ce208

P4 : 025cddb8 P5 : 025ce174 FP : 025e2ec8 SP : 024e9f24

LB0: 025c47f3 LT0: 025c47f2 LC0: 00000000

LB1: 02391813 LT1: 02391808 LC1: 00000000

B0 : 00000000 L0 : 00000000 M0 : 00000004 I0 : 025e2e30

B1 : 00000000 L1 : 00000000 M1 : 00000000 I1 : 025cd0e0

B2 : 00000000 L2 : 00000000 M2 : 00000000 I2 : 023d9d98

B3 : 00000000 L3 : 00000000 M3 : 00000000 I3 : 00000000

A0.w: 0000147a A0.x: 00000000 A1.w: 0000147a A1.x: 00000000

USP : 02599e98 ASTAT: 02000020

Hardware Trace:

0 Target : <0x00003fe4> { _trap_c + 0x0 }

Source : <0xffa00750> { _exception_to_level5 + 0xa4 } JUMP.L

1 Target : <0xffa006ac> { _exception_to_level5 + 0x0 }

Source : <0xffa00560> { _bfin_return_from_exception + 0x20 } RTX

2 Target : <0xffa00540> { _bfin_return_from_exception + 0x0 }

Source : <0xffa00604> { _ex_trap_c + 0x74 } JUMP.S

3 Target : <0xffa00590> { _ex_trap_c + 0x0 }

Source : <0xffa00824> { _trap + 0x68 } JUMP (P4)

4 Target : <0xffa007da> { _trap + 0x1e }

Source : <0xffa007d6> { _trap + 0x1a } IF CC JUMP pcrel

5 Target : <0xffa007bc> { _trap + 0x0 }

Source : <0x025c016c> [ sigaltstack01 + 0x12c ] EXCPT 3

6 Target : <0x025c015c> [ sigaltstack01 + 0x11c ]

Source : <0xffa00dce> { __common_int_entry + 0xf2 } RTI

7 Target : <0xffa00d6c> { __commo

!!!! hit Control-C

n_int_entry + 0x90 }

Source : <0xffa011b0> { _evt_system_call + 0x64 } JUMP.S

8 Target : <0xffa011b0> { _evt_system_call + 0x64 }

Source : <0xffa009b2> { _system_call + 0xbe } RTS

9 Target : <0xffa009ac> { _system_call + 0xb8 }

Source : <0x00003542> { _do_notify_resume + 0x4e } RTS

10 Target : <0x0000353e> { _do_notify_resume + 0x4a }

Source : <0x00003524> { _do_notify_resume + 0x30 } IF CC JUMP pcrel

11 Target : <0x00003516> { _do_notify_resume + 0x22 }

Source : <0x0000354a> { _do_notify_resume + 0x56 } JUMP.S

12 Target : <0x0000354a> { _do_notify_resume + 0x56 }

Source : <0x000031de> { _do_signal + 0x9f6 } RTS

13 Target : <0x000031d2> { _do_signal + 0x9ea }

Source : <0x00003158> { _do_signal + 0x970 } IF CC JUMP pcrel (BP)

14 Target : <0x0000314c> { _do_signal + 0x964 }

Source : <0x00003130> { _do_signal + 0x948 } IF CC JUMP pcrel (BP)

15 Target : <0x00003122> { _do_signal + 0x93a }

Source : <0x0000311c> { _do_signal + 0x934 } IF CC JUMP pcrel (BP)

Userspace Stack

Stack info:

SP: [0x02599e98] <0x02599e98> [ sigaltstack01 + 0x1e98 ]

Memory from 0x02599e90 to 0259a000

02599e90: 00000000 00000000 [0000000a] 02599eac 02599f2c 00000001 02599ea8 0000000a

02599eb0: 00000000 00000000 000002fb 00000000 0019b62c 02599ec4 02599ec4 00000000

02599ed0: 02599ed0 02599ed0 00000000 00000000 00000000 00000000 ffffffff 00000000

02599ef0: ffffe000 00000000 02640880 08087fff 6008140b 0205fe90 <ffa0095e> 0202b3b8

02599f10: 0202b2e0 0202b040 00000003 02640880 00000000 026471d0 00008000 00000000

02599f30: 00000000 02598004 00000000 00002000 00000000 0000000a 00000000 00000003

02599f50: 025d0154 025ce178 00000000 00000000 00000025 0000001f 00000000 025ce208

02599f70: 025cddb8 025ce174 025e2ebc 0000147a 0000147a 00000000 00000000 02000000

02599f90: 025c03a4 025c2f5a 025c2f5a 025e2ec8 025e2e30 025cd0e0 023d9d98 00000000

02599fb0: 00000004 00000000 00000000 00000000 00000000 00000000 00000000 00000000

02599fd0: 00000000 00000000 00000000 00000000 00000000 00000000 025c47f2 02391808

02599ff0: 025c47f3 02391813 00060000 00000000

Follow-ups

--- Sonic Zhang 2011-11-24 22:25:43

Not a bug.

This case switch user stack in the middle of testing. But, GCC flag

"-mstack-check-l1" doesn't know the new stack. Please disable this

flag for this LTP case.

--- Vivi Li 2011-11-25 01:16:14

OK. LTP test script is updated.

Close it.

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