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Re: Backtrace doesn't terminate.


Hi Girish,

You need to submit a testcase and a set of steps that people can use to
replicate your problem . I doubt anyone would be able to help you out
without that. 

cheers
Ramana

On Fri, 2006-03-17 at 20:20 +0530, Girish Shilamkar wrote:
> Hi All,
> 	I am using gdb 6.4 on Xscale processor. I found that the backtrace
> doesn't terminate for multi-threaded application, it keeps on repeating
> the last frame.
> This problem was also seen on native gdb.
> 
> (gdb) bt
> #0  0x401bf06c in nanosleep ()
>    from /opt/timesys/toolchains/armv5l-linux/armv5l-linux-
> debug/lib/libc.so.6
> #1  0x401beeb0 in __sleep (seconds=0)
> at ../sysdeps/unix/sysv/linux/sleep.c:137
> #2  0x00008574 in thread_func (not_used=0xbee2fba8) at multithread.c:35
> #3  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> #4  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> #5  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> #6  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> #7  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> #8  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> 
> On  investigating further I found that registers remained unchanged
> except sp, for these frames.
> 
> (gdb) fr 3
> #3  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> 310     in manager.c
> (gdb) info regi
> r0             0x0      0
> r1             0xbcbff960       -1128269472
> r2             0x0      0
> r3             0x1      1
> r4             0x174    372
> r5             0xbcbffbe0       -1128268832
> r6             0x0      0
> r7             0x400f0d6c       1074728300
> r8             0x80     128
> r9             0x400eebc0       1074719680
> r10            0x400ee000       1074716672
> r11            0x0      0
> r12            0x0      0
> sp             0xbcbffb40       -1128268992
> lr             0x400dc0f0       1074643184
> pc             0x400dc0f0       1074643184
> fps            0x0      0
> cpsr           0x60000010       1610612752
> (gdb) fr 4
> #4  0x400dc0f0 in pthread_start_thread_event (arg=0xbcbffbe0) at
> manager.c:310
> 310     in manager.c
> (gdb) info regi
> r0             0x0      0
> r1             0xbcbff960       -1128269472
> r2             0x0      0
> r3             0x1      1
> r4             0x174    372
> r5             0xbcbffbe0       -1128268832
> r6             0x0      0
> r7             0x400f0d6c       1074728300
> r8             0x80     128
> r9             0x400eebc0       1074719680
> r10            0x400ee000       1074716672
> r11            0x0      0
> r12            0x0      0
> sp             0xbcbffbd8       -1128268840
> lr             0x400dc0f0       1074643184
> pc             0x400dc0f0       1074643184
> fps            0x0      0
> cpsr           0x60000010       1610612752
> (gdb)                      
> 
> Kindly let me know where things might be going wrong.
> 
> Thanks & Regards,
> -Girish.
> 


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