| commit | 2ba7fae3bd688f5bb6cb08defc731d77e6bd943c | |
| author | Peter Maydell <peter.maydell@linaro.org> | |
| Mon, 18 Jul 2016 14:35:59 +0000 (18 15:35 +0100) | ||
| committer | Riku Voipio <riku.voipio@linaro.org> | |
| Wed, 21 Sep 2016 11:25:26 +0000 (21 14:25 +0300) | ||
| tree | a2138d834c2f9d056db7c55b26118b554865be46 | treesnapshot (tar.gz zip) |
| parent | 700fa58e4b9100d6bd77df06d2e5d1f457720c4d | commitdiff |
linux-user: Check for bad event numbers in epoll_wait
The kernel checks that the maxevents parameter to epoll_wait
is non-negative and not larger than EP_MAX_EVENTS. Add this
check to our implementation, so that:
* we fail these cases EINVAL rather than EFAULT
* we don't pass negative or overflowing values to the
lock_user() size calculation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
The kernel checks that the maxevents parameter to epoll_wait
is non-negative and not larger than EP_MAX_EVENTS. Add this
check to our implementation, so that:
* we fail these cases EINVAL rather than EFAULT
* we don't pass negative or overflowing values to the
lock_user() size calculation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| linux-user/syscall.c | diffblobblamehistory | |
| linux-user/syscall_defs.h | diffblobblamehistory |