I am trying to allocate a dynamic number of large memory (128K) by malloc(128K, M_xxx, M_NOWAIT). Although this is not done in an interrupt routine, I figure I'd better use M_NOWAIT so that I can deal with the situation when the memory is low. However, I experience the following deadlock:
#1 0xc02d8f4d in vm_object_page_remove (object=0xc03fa060, start=5690, end=5722, clean_only=0) at ../../vm/vm_object.c:1459 #2 0xc02d53ce in vm_map_delete (map=0xc03f9ee0, start=3243479040, end=3243610112) at ../../vm/vm_map.c:1872 #3 0xc02d35e3 in kmem_malloc (map=0xc03f9ee0, size=131072, flags=1) at ../../vm/vm_kern.c:365 #4 0xc01baed7 in malloc (size=131072, type=0xc0f6ab60, flags=1) at ../../kern/kern_malloc.c:188 The process that calls mallocs() hangs at the following statement inside vm_object_page_remove(): vm_page_sleep_busy(p, TRUE, "vmopar") At the same time, the entire system also freezes. I am wondering if I am doing the right thing here. Maybe 128K is too large for such a use? I am using 4.4-Release. Any suggestion is appreciated. -Zhihui To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message