diff options
Diffstat (limited to 'recipes-kernel/linux/files/Trusty-SRU-ipc-fix-compat-msgrcv-with-negative-msgtyp.patch')
| -rw-r--r-- | recipes-kernel/linux/files/Trusty-SRU-ipc-fix-compat-msgrcv-with-negative-msgtyp.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/recipes-kernel/linux/files/Trusty-SRU-ipc-fix-compat-msgrcv-with-negative-msgtyp.patch b/recipes-kernel/linux/files/Trusty-SRU-ipc-fix-compat-msgrcv-with-negative-msgtyp.patch new file mode 100644 index 0000000..b90a114 --- /dev/null +++ b/recipes-kernel/linux/files/Trusty-SRU-ipc-fix-compat-msgrcv-with-negative-msgtyp.patch @@ -0,0 +1,27 @@ +BugLink: http://bugs.launchpad.net/bugs/1393355 + +Compat function takes msgtyp argument as u32 and passes it down to +do_msgrcv which results in casting to long, thus the sign is lost and we +get a big positive number instead. + +Cast the argument to signed type before passing it down. + +Signed-off-by: Mateusz Guzik <mguzik@redhat.com> +Reported-by: Gabriellla Schmidt <gsc@bruker.de> + +Upstream-Status::Backport +Kernel 3.14 + +diff --git a/ipc/compat.c b/ipc/compat.c +index 892f658..d3b3760 100644 +--- a/ipc/compat.c ++++ b/ipc/compat.c +@@ -381,7 +381,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second, + uptr = compat_ptr(ipck.msgp); + fifth = ipck.msgtyp; + } +- return do_msgrcv(first, uptr, second, fifth, third, ++ return do_msgrcv(first, uptr, second, (s32)fifth, third, + compat_do_msg_fill); + } + case MSGGET: |