Author: araujo Date: Wed May 23 09:34:51 2018 New Revision: 334084 URL: https://svnweb.freebsd.org/changeset/base/334084
Log: pthread_rwlock_unlock(3) returns 0 if successful, otherwise an error number will be returned to indicate the error, so I'm applying an assert(3) to do a sanity check of the return value. Reported by: Coverity CID: 1391235, 1193654 and 1193651 Reviewed by: grehan MFC after: 4 weeks. Sponsored by: iXsystems Inc. Differential Revision: https://reviews.freebsd.org/D15533 Modified: head/usr.sbin/bhyve/mem.c Modified: head/usr.sbin/bhyve/mem.c ============================================================================== --- head/usr.sbin/bhyve/mem.c Wed May 23 09:16:20 2018 (r334083) +++ head/usr.sbin/bhyve/mem.c Wed May 23 09:34:51 2018 (r334084) @@ -123,6 +123,7 @@ mmio_rb_add(struct mmio_rb_tree *rbt, struct mmio_rb_r static void mmio_rb_dump(struct mmio_rb_tree *rbt) { + int perror; struct mmio_rb_range *np; pthread_rwlock_rdlock(&mmio_rwlock); @@ -130,7 +131,8 @@ mmio_rb_dump(struct mmio_rb_tree *rbt) printf(" %lx:%lx, %s\n", np->mr_base, np->mr_end, np->mr_param.name); } - pthread_rwlock_unlock(&mmio_rwlock); + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); } #endif @@ -166,7 +168,7 @@ access_memory(struct vmctx *ctx, int vcpu, uint64_t pa void *arg) { struct mmio_rb_range *entry; - int err, immutable; + int err, perror, immutable; pthread_rwlock_rdlock(&mmio_rwlock); /* @@ -184,7 +186,8 @@ access_memory(struct vmctx *ctx, int vcpu, uint64_t pa /* Update the per-vCPU cache */ mmio_hint[vcpu] = entry; } else if (mmio_rb_lookup(&mmio_rb_fallback, paddr, &entry)) { - pthread_rwlock_unlock(&mmio_rwlock); + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); return (ESRCH); } } @@ -203,14 +206,19 @@ access_memory(struct vmctx *ctx, int vcpu, uint64_t pa * config space window as 'immutable' the deadlock can be avoided. */ immutable = (entry->mr_param.flags & MEM_F_IMMUTABLE); - if (immutable) - pthread_rwlock_unlock(&mmio_rwlock); + if (immutable) { + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); + } err = cb(ctx, vcpu, paddr, &entry->mr_param, arg); - if (!immutable) - pthread_rwlock_unlock(&mmio_rwlock); + if (!immutable) { + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); + } + return (err); } @@ -272,7 +280,7 @@ static int register_mem_int(struct mmio_rb_tree *rbt, struct mem_range *memp) { struct mmio_rb_range *entry, *mrp; - int err; + int err, perror; err = 0; @@ -285,7 +293,8 @@ register_mem_int(struct mmio_rb_tree *rbt, struct mem_ pthread_rwlock_wrlock(&mmio_rwlock); if (mmio_rb_lookup(rbt, memp->base, &entry) != 0) err = mmio_rb_add(rbt, mrp); - pthread_rwlock_unlock(&mmio_rwlock); + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); if (err) free(mrp); } else @@ -313,7 +322,7 @@ unregister_mem(struct mem_range *memp) { struct mem_range *mr; struct mmio_rb_range *entry = NULL; - int err, i; + int err, perror, i; pthread_rwlock_wrlock(&mmio_rwlock); err = mmio_rb_lookup(&mmio_rb_root, memp->base, &entry); @@ -330,7 +339,8 @@ unregister_mem(struct mem_range *memp) mmio_hint[i] = NULL; } } - pthread_rwlock_unlock(&mmio_rwlock); + perror = pthread_rwlock_unlock(&mmio_rwlock); + assert(perror == 0); if (entry) free(entry); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
