* [Qemu-devel] [PATCH] linux-user: Do not ignore mmap failure from host
@ 2013-06-29 9:41 Jürg Billeter
2013-07-02 14:19 ` Peter Maydell
0 siblings, 1 reply; 2+ messages in thread
From: Jürg Billeter @ 2013-06-29 9:41 UTC (permalink / raw)
To: qemu-devel; +Cc: Jürg Billeter, Riku Voipio
File mapping may fail with EACCES.
Signed-off-by: Jürg Billeter <j@bitron.ch>
---
linux-user/mmap.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index b412e3f..de22197 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -483,6 +483,10 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
if (!(flags & MAP_ANONYMOUS)) {
p = mmap(g2h(start), len, prot,
flags | MAP_FIXED, fd, host_offset);
+ if (p == MAP_FAILED) {
+ munmap(g2h(start), host_len);
+ goto fail;
+ }
host_start += offset - host_offset;
}
start = h2g(host_start);
--
1.8.2.3
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2013-06-29 9:41 [Qemu-devel] [PATCH] linux-user: Do not ignore mmap failure from host Jürg Billeter
2013-07-02 14:19 ` Peter Maydell
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