[RTEMS Project] #2957: Shared memory support internal locking is broken

[RTEMS trac]

#2957: Shared memory support internal locking is broken
-----------------------------+----------------------
 Reporter:  Sebastian Huber  |      Owner:  Gedare
     Type:  defect           |     Status:  assigned
 Priority:  normal           |  Milestone:  4.12
Component:  cpukit           |    Version:  4.12
 Severity:  normal           |   Keywords:
-----------------------------+----------------------
 The top level lock is an ISR lock (interrupt disable/enable or SMP lock)
 and the low level lock is potentially a mutex.  The problem is exposed by
 test psxshm02:
 {{{
 #0  _Terminate (the_source=INTERNAL_ERROR_CORE, the_error=31) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:35
 #1  0x00111654 in _Internal_error
 (core_error=INTERNAL_ERROR_BAD_THREAD_DISPATCH_ENVIRONMENT) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/interr.c:52
 #2  0x00117010 in _Thread_Do_dispatch (cpu_self=0x2035c0
 <_Per_CPU_Information>, level=1611071955) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threaddispatch.c:190
 #3  0x0011a568 in _Thread_Dispatch_enable (cpu_self=0x2035c0
 <_Per_CPU_Information>) at
 ../../cpukit/../../../realview_pbx_a9_qemu/lib/include/rtems/score/threaddispatch.h:227
 #4  0x0011b6c4 in _Thread_Change_life (clear=THREAD_LIFE_PROTECTED,
 set=THREAD_LIFE_PROTECTED, ignore=(unknown: 0)) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadrestart.c:684
 #5  0x0011b6ea in _Thread_Set_life_protection
 (state=THREAD_LIFE_PROTECTED) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadrestart.c:691
 #6  0x0010f3dc in _API_Mutex_Lock (the_mutex=0x2037d8) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/apimutexlock.c:31
 #7  0x001050a0 in _RTEMS_Lock_allocator () at
 ../../cpukit/../../../realview_pbx_a9_qemu/lib/include/rtems/score/apimutex.h:120
 #8  0x00105442 in rtems_heap_allocate_aligned_with_boundary (size=10004,
 alignment=0, boundary=0) at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/malloc_deferred.c:89
 #9  0x001055a6 in malloc (size=10004) at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/malloc.c:39
 #10 0x0011e820 in realloc (ptr=0x0, size=10004) at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/realloc.c:62
 #11 0x0010b1a2 in _POSIX_Shm_Object_resize_from_heap (shm_obj=0x204870,
 size=10004) at
 ../../../../../../rtems/c/src/../../cpukit/posix/src/shmheap.c:59
 #12 0x0010b6ac in shm_ftruncate (iop=0x202cf8 <rtems_libio_iops+168>,
 length=10004) at
 ../../../../../../rtems/c/src/../../cpukit/posix/src/shmopen.c:83
 #13 0x00104cfc in ftruncate (fd=3, length=10004) at
 ../../../../../../rtems/c/src/../../cpukit/libcsupport/src/ftruncate.c:37
 #14 0x001008e0 in POSIX_Init (argument=0x0) at
 ../../../../../../../rtems/c/src/../../testsuites/psxtests/psxshm02/init.c:54
 #15 0x001201ee in _Thread_Entry_adaptor_pointer (executing=0x2041a8) at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadentryadaptorpointer.c:25
 #16 0x00120302 in _Thread_Handler () at
 ../../../../../../rtems/c/src/../../cpukit/score/src/threadhandler.c:88
 }}}

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Ticket URL: <http://devel.rtems.org/ticket/2957>
RTEMS Project <http://www.rtems.org/>
RTEMS Project