sigbus.d

#!/usr/sbin/dtrace -qCs

#define FC_OBJERR       0x5     /* underlying object returned errno value */

#define FC_CODE(fc)     ((fc) & 0xff)
#define FC_ERRNO(fc)    ((unsigned)(fc) >> 8)

BEGIN
{
	printf("tracing...\n");
}

fbt::pagefault:entry
{
	self->pf = 1;
}

fbt::acquire_kpmem_lock:return,
fbt::segdev_faultpage:return,
fbt::segdev_fault:return,
fbt::devmap_unload:return,
fbt::devmap_load:return,
fbt::segkp_fault:return,
fbt::segmap_fault:return,
fbt::segmap_faulta:return,
fbt::spt_anon_getpages:return,
fbt::segvn_faultpage:return,
fbt::segvn_fault_vnodepages:return,
fbt::segvn_fault_anonpages:return,
fbt::segvn_fault:return,
fbt::segvn_faulta:return
/self->pf && FC_CODE(arg1) == FC_OBJERR && FC_ERRNO(arg1) == ENOMEM/
{
	printf("%Y: %s:\n", walltimestamp, probefunc);
	stack();
	printf("\n");
}

fbt::pagefault:return
/self->pf/
{
	self->pf = 0;
}