diff options
| author | Jonathan Neuschäfer | 2015-09-03 07:27:26 +0200 |
|---|---|---|
| committer | Riku Voipio | 2015-09-28 15:39:43 +0200 |
| commit | ee1045877a7e226945c7cec2bda80039bd2d0c8e (patch) | |
| tree | 00161e36d739a5ccfb44e26d25f1708bb1ddc9ab /linux-user/linuxload.c | |
| parent | linux-user: remove MAX_ARG_PAGES limit (diff) | |
| download | qemu-ee1045877a7e226945c7cec2bda80039bd2d0c8e.tar.gz qemu-ee1045877a7e226945c7cec2bda80039bd2d0c8e.tar.xz qemu-ee1045877a7e226945c7cec2bda80039bd2d0c8e.zip | |
linux-user: fix cmsg conversion in case of multiple headers
Currently, __target_cmsg_nxthdr compares a pointer derived from
target_cmsg against the msg_control field of target_msgh (through
subtraction). This failed for me when emulating i386 code under x86_64,
because pointers in the host address space and pointers in the guest
address space were not the same. This patch passes the initial value of
target_cmsg into __target_cmsg_nxthdr.
I found and fixed two more related bugs:
- __target_cmsg_nxthdr now returns the new cmsg pointer instead of the
old one.
- tgt_space (in host_to_target_cmsg) doesn't count "sizeof (struct
target_cmsghdr)" twice anymore.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/linuxload.c')
0 files changed, 0 insertions, 0 deletions