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-rw-r--r--kernel/futex.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/kernel/futex.c b/kernel/futex.c
index 9dc591ab681a..e8fbdd7d95ac 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1149,9 +1149,9 @@ static int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
1149 1149
1150/* 1150/*
1151 * In case we must use restart_block to restart a futex_wait, 1151 * In case we must use restart_block to restart a futex_wait,
1152 * we encode in the 'arg3' shared capability 1152 * we encode in the 'flags' shared capability
1153 */ 1153 */
1154#define ARG3_SHARED 1 1154#define FLAGS_SHARED 1
1155 1155
1156static long futex_wait_restart(struct restart_block *restart); 1156static long futex_wait_restart(struct restart_block *restart);
1157 1157
@@ -1290,12 +1290,13 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
1290 struct restart_block *restart; 1290 struct restart_block *restart;
1291 restart = &current_thread_info()->restart_block; 1291 restart = &current_thread_info()->restart_block;
1292 restart->fn = futex_wait_restart; 1292 restart->fn = futex_wait_restart;
1293 restart->arg0 = (unsigned long)uaddr; 1293 restart->futex.uaddr = (u32 *)uaddr;
1294 restart->arg1 = (unsigned long)val; 1294 restart->futex.val = val;
1295 restart->arg2 = (unsigned long)abs_time; 1295 restart->futex.time = abs_time->tv64;
1296 restart->arg3 = 0; 1296 restart->futex.flags = 0;
1297
1297 if (fshared) 1298 if (fshared)
1298 restart->arg3 |= ARG3_SHARED; 1299 restart->futex.flags |= FLAGS_SHARED;
1299 return -ERESTART_RESTARTBLOCK; 1300 return -ERESTART_RESTARTBLOCK;
1300 } 1301 }
1301 1302
@@ -1310,15 +1311,15 @@ static int futex_wait(u32 __user *uaddr, struct rw_semaphore *fshared,
1310 1311
1311static long futex_wait_restart(struct restart_block *restart) 1312static long futex_wait_restart(struct restart_block *restart)
1312{ 1313{
1313 u32 __user *uaddr = (u32 __user *)restart->arg0; 1314 u32 __user *uaddr = (u32 __user *)restart->futex.uaddr;
1314 u32 val = (u32)restart->arg1;
1315 ktime_t *abs_time = (ktime_t *)restart->arg2;
1316 struct rw_semaphore *fshared = NULL; 1315 struct rw_semaphore *fshared = NULL;
1316 ktime_t t;
1317 1317
1318 t.tv64 = restart->futex.time;
1318 restart->fn = do_no_restart_syscall; 1319 restart->fn = do_no_restart_syscall;
1319 if (restart->arg3 & ARG3_SHARED) 1320 if (restart->futex.flags & FLAGS_SHARED)
1320 fshared = &current->mm->mmap_sem; 1321 fshared = &current->mm->mmap_sem;
1321 return (long)futex_wait(uaddr, fshared, val, abs_time); 1322 return (long)futex_wait(uaddr, fshared, restart->futex.val, &t);
1322} 1323}
1323 1324
1324 1325