diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 0cad4803ffacd2c021f33407f21e9ead735c9bac..c1be8066ea5914c33e9a7aacbfee66f8455741b2 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -529,3 +529,13 @@ When: 3.5 Why: The old kmap_atomic() with two arguments is deprecated, we only keep it for backward compatibility for few cycles and then drop it. Who: Cong Wang + +---------------------------- + +What: get_robust_list syscall +When: 2013 +Why: There appear to be no production users of the get_robust_list syscall, + and it runs the risk of leaking address locations, allowing the bypass + of ASLR. It was only ever intended for debugging, so it should be + removed. +Who: Kees Cook diff --git a/kernel/futex.c b/kernel/futex.c index d701be57c423ffbec80ae246c8f194d14f62aa39..e2b0fb9a0b3b3d0d5871ee37bf08618a6bf052e7 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -2449,6 +2449,8 @@ SYSCALL_DEFINE3(get_robust_list, int, pid, if (!futex_cmpxchg_enabled) return -ENOSYS; + WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n"); + rcu_read_lock(); ret = -ESRCH; diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index a9642d528630260749f760f3c02bc8164f51af2b..83e368b005fc6eb001a2babe7a48d80dcb21037e 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -142,6 +142,8 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, if (!futex_cmpxchg_enabled) return -ENOSYS; + WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n"); + rcu_read_lock(); ret = -ESRCH;