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Merge tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

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Pull uninitialized_var() macro removal from Kees Cook:
 "This is long overdue, and has hidden too many bugs over the years. The
  series has several "by hand" fixes, and then a trivial treewide
  replacement.

   - Clean up non-trivial uses of uninitialized_var()

   - Update documentation and checkpatch for uninitialized_var() removal

   - Treewide removal of uninitialized_var()"

* tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  compiler: Remove uninitialized_var() macro
  treewide: Remove uninitialized_var() usage
  checkpatch: Remove awareness of uninitialized_var() macro
  mm/debug_vm_pgtable: Remove uninitialized_var() usage
  f2fs: Eliminate usage of uninitialized_var() macro
  media: sur40: Remove uninitialized_var() usage
  KVM: PPC: Book3S PR: Remove uninitialized_var() usage
  clk: spear: Remove uninitialized_var() usage
  clk: st: Remove uninitialized_var() usage
  spi: davinci: Remove uninitialized_var() usage
  ide: Remove uninitialized_var() usage
  rtlwifi: rtl8192cu: Remove uninitialized_var() usage
  b43: Remove uninitialized_var() usage
  drbd: Remove uninitialized_var() usage
  x86/mm/numa: Remove uninitialized_var() usage
  docs: deprecated.rst: Add uninitialized_var()
This commit is contained in:
Linus Torvalds
2020-08-04 13:49:43 -07:00
parent 427714f258 63a0895d96
commit 99ea1521a0
195 changed files with 320 additions and 329 deletions
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14
kernel/futex.c
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@@ -1305,7 +1305,7 @@ static int lookup_pi_state(u32 __user *uaddr, u32 uval,
static int lock_pi_update_atomic(u32 __user *uaddr, u32 uval, u32 newval)
{
int err;
u32 uninitialized_var(curval);
u32 curval;
if (unlikely(should_fail_futex(true)))
return -EFAULT;
@@ -1475,7 +1475,7 @@ static void mark_wake_futex(struct wake_q_head *wake_q, struct futex_q *q)
*/
static int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_pi_state *pi_state)
{
u32 uninitialized_var(curval), newval;
u32 curval, newval;
struct task_struct *new_owner;
bool postunlock = false;
DEFINE_WAKE_Q(wake_q);
@@ -2325,7 +2325,7 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
struct task_struct *argowner)
{
struct futex_pi_state *pi_state = q->pi_state;
u32 uval, uninitialized_var(curval), newval;
u32 uval, curval, newval;
struct task_struct *oldowner, *newowner;
u32 newtid;
int ret, err = 0;
@@ -2942,7 +2942,7 @@ uaddr_faulted:
*/
static int futex_unlock_pi(u32 __user *uaddr, unsigned int flags)
{
u32 uninitialized_var(curval), uval, vpid = task_pid_vnr(current);
u32 curval, uval, vpid = task_pid_vnr(current);
union futex_key key = FUTEX_KEY_INIT;
struct futex_hash_bucket *hb;
struct futex_q *top_waiter;
@@ -3417,7 +3417,7 @@ err_unlock:
static int handle_futex_death(u32 __user *uaddr, struct task_struct *curr,
bool pi, bool pending_op)
{
u32 uval, uninitialized_var(nval), mval;
u32 uval, nval, mval;
int err;
/* Futex address must be 32bit aligned */
@@ -3547,7 +3547,7 @@ static void exit_robust_list(struct task_struct *curr)
struct robust_list_head __user *head = curr->robust_list;
struct robust_list __user *entry, *next_entry, *pending;
unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
unsigned int uninitialized_var(next_pi);
unsigned int next_pi;
unsigned long futex_offset;
int rc;
@@ -3847,7 +3847,7 @@ static void compat_exit_robust_list(struct task_struct *curr)
struct compat_robust_list_head __user *head = curr->compat_robust_list;
struct robust_list __user *entry, *next_entry, *pending;
unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
unsigned int uninitialized_var(next_pi);
unsigned int next_pi;
compat_uptr_t uentry, next_uentry, upending;
compat_long_t futex_offset;
int rc;