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9p: fix leak in synth_name_to_path()

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Leak found thanks to ASAN:

Direct leak of 8 byte(s) in 1 object(s) allocated from:
    #0 0x55995789ac90 in __interceptor_malloc (/home/elmarco/src/qemu/build/x86_64-softmmu/qemu-system-x86_64+0x1510c90)
    #1 0x7f0a91190f0c in g_malloc /home/elmarco/src/gnome/glib/builddir/../glib/gmem.c:94
    #2 0x5599580a281c in v9fs_path_copy /home/elmarco/src/qemu/hw/9pfs/9p.c:196:17
    #3 0x559958f9ec5d in coroutine_trampoline /home/elmarco/src/qemu/util/coroutine-ucontext.c:116:9
    #4 0x7f0a8766ebbf  (/lib64/libc.so.6+0x50bbf)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
This commit is contained in:
Marc-André Lureau 2018-02-19 18:27:15 +01:00 committed by Greg Kurz
parent e446a1eb5e
commit 6ce7177ae2
1 changed files with 1 additions and 0 deletions
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1
hw/9pfs/9p-synth.c
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@ -495,6 +495,7 @@ static int synth_name_to_path(FsContext *ctx, V9fsPath *dir_path,
}
out:
/* Copy the node pointer to fid */
g_free(target->data);
target->data = g_memdup(&node, sizeof(void *));
target->size = sizeof(void *);
return 0;