From 86abac06c142d20772b3f2e04c9bf02b7936a0b3 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 14 Sep 2015 12:31:44 +0200 Subject: [PATCH] linux-user: assert that target_mprotect cannot fail All error conditions that target_mprotect checks are also checked by target_mmap. EACCESS cannot happen because we are just removing PROT_WRITE. ENOMEM should not happen because we are modifying a whole VMA (and we have bigger problems anyway if it happens). Fixes a Coverity false positive, where Coverity complains about target_mprotect's return value being passed to tb_invalidate_phys_range. Signed-off-by: Paolo Bonzini Signed-off-by: Riku Voipio --- linux-user/mmap.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/linux-user/mmap.c b/linux-user/mmap.c index b2126c76fa..5606bcd164 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -514,10 +514,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, goto fail; if (!(prot & PROT_WRITE)) { ret = target_mprotect(start, len, prot); - if (ret != 0) { - start = ret; - goto the_end; - } + assert(ret == 0); } goto the_end; }