Date: Thu, 27 Oct 2005 19:42:35 GMT From: Todd Miller <millert@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 85946 for review Message-ID: <200510271942.j9RJgZaM023359@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=85946 Change 85946 by millert@millert_ibook on 2005/10/27 19:41:45 Add sebsd_malloc_init() to populate the free list with a large number of small allocations (512). This prevents a panic due to free list exhaustion caused by non-blocking allocation early on in avc_init(). Not very nice but a workaround until we have a better solution. Affected files ... .. //depot/projects/trustedbsd/sedarwin7/src/sedarwin/sedarwin/sebsd.c#16 edit Differences ... ==== //depot/projects/trustedbsd/sedarwin7/src/sedarwin/sedarwin/sebsd.c#16 (text+ko) ==== @@ -76,6 +76,27 @@ #include <vm/vm_kern.h> #include <kern/kalloc.h> +/* + * XXX + * Hack to populate the free list with lots of small allocations. + * Needed to make non-blocking allocations work early on in the + * boot sequence. Otherwise we crash in avc_init(). + * XXX + * +void +sebsd_malloc_init(void) +{ + int i; + void *prealloc[512]; + + for (i = 0; i < 512; i++) { + if ((prealloc[i] = kalloc(64)) == NULL) + break; + } + while (i--) + kfree(prealloc[i], 64); +} + void * sebsd_malloc(size_t size, int flags) { @@ -132,6 +153,7 @@ { printf("sebsd:: init\n"); + sebsd_malloc_init(); avc_init(); //sebsd_register_sysctls(); if (security_init()) {
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