Module Name: src Committed By: pooka Date: Mon Mar 11 21:37:54 UTC 2013
Modified Files: src/sys/kern: subr_pool.c Log Message: In pool_cache_put_slow(), pool_get() can block (it does mutex_enter()), so we need to retry if curlwp took a context switch during the call. Otherwise, CPU-local invariants can get screwed up: panic: kernel diagnostic assertion "cur->pcg_avail == cur->pcg_size" failed This is (was) very easy to reproduce by just running: while : ; do RUMP_NCPU=32 ./a.out ; done where a.out only calls rump_init(). But, any situation there's contention and a pool doesn't have emptygroups would do. To generate a diff of this commit: cvs rdiff -u -r1.199 -r1.200 src/sys/kern/subr_pool.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.