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Diffstat (limited to 'kernel')
-rw-r--r--kernel/bpf/syscall.c2
-rw-r--r--kernel/compat.c16
-rw-r--r--kernel/events/core.c2
-rw-r--r--kernel/exit.c4
-rw-r--r--kernel/futex.c35
-rw-r--r--kernel/printk/printk.c4
-rw-r--r--kernel/ptrace.c4
-rw-r--r--kernel/rseq.c6
-rw-r--r--kernel/sched/core.c4
-rw-r--r--kernel/signal.c8
-rw-r--r--kernel/sys.c2
-rw-r--r--kernel/trace/bpf_trace.c2
12 files changed, 47 insertions, 42 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 0607db304def..b155cd17c1bd 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -79,7 +79,7 @@ int bpf_check_uarg_tail_zero(void __user *uaddr,
if (unlikely(actual_size > PAGE_SIZE)) /* silly large */
return -E2BIG;
- if (unlikely(!access_ok(VERIFY_READ, uaddr, actual_size)))
+ if (unlikely(!access_ok(uaddr, actual_size)))
return -EFAULT;
if (actual_size <= expected_size)
diff --git a/kernel/compat.c b/kernel/compat.c
index 089d00d0da9c..705d4ae6c018 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -95,28 +95,28 @@ int compat_put_timex(struct compat_timex __user *utp, const struct timex *txc)
static int __compat_get_timeval(struct timeval *tv, const struct old_timeval32 __user *ctv)
{
- return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) ||
+ return (!access_ok(ctv, sizeof(*ctv)) ||
__get_user(tv->tv_sec, &ctv->tv_sec) ||
__get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
}
static int __compat_put_timeval(const struct timeval *tv, struct old_timeval32 __user *ctv)
{
- return (!access_ok(VERIFY_WRITE, ctv, sizeof(*ctv)) ||
+ return (!access_ok(ctv, sizeof(*ctv)) ||
__put_user(tv->tv_sec, &ctv->tv_sec) ||
__put_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
}
static int __compat_get_timespec(struct timespec *ts, const struct old_timespec32 __user *cts)
{
- return (!access_ok(VERIFY_READ, cts, sizeof(*cts)) ||
+ return (!access_ok(cts, sizeof(*cts)) ||
__get_user(ts->tv_sec, &cts->tv_sec) ||
__get_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
static int __compat_put_timespec(const struct timespec *ts, struct old_timespec32 __user *cts)
{
- return (!access_ok(VERIFY_WRITE, cts, sizeof(*cts)) ||
+ return (!access_ok(cts, sizeof(*cts)) ||
__put_user(ts->tv_sec, &cts->tv_sec) ||
__put_user(ts->tv_nsec, &cts->tv_nsec)) ? -EFAULT : 0;
}
@@ -335,7 +335,7 @@ int get_compat_sigevent(struct sigevent *event,
const struct compat_sigevent __user *u_event)
{
memset(event, 0, sizeof(*event));
- return (!access_ok(VERIFY_READ, u_event, sizeof(*u_event)) ||
+ return (!access_ok(u_event, sizeof(*u_event)) ||
__get_user(event->sigev_value.sival_int,
&u_event->sigev_value.sival_int) ||
__get_user(event->sigev_signo, &u_event->sigev_signo) ||
@@ -354,7 +354,7 @@ long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask,
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
- if (!access_ok(VERIFY_READ, umask, bitmap_size / 8))
+ if (!access_ok(umask, bitmap_size / 8))
return -EFAULT;
user_access_begin();
@@ -384,7 +384,7 @@ long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask,
bitmap_size = ALIGN(bitmap_size, BITS_PER_COMPAT_LONG);
nr_compat_longs = BITS_TO_COMPAT_LONGS(bitmap_size);
- if (!access_ok(VERIFY_WRITE, umask, bitmap_size / 8))
+ if (!access_ok(umask, bitmap_size / 8))
return -EFAULT;
user_access_begin();
@@ -438,7 +438,7 @@ void __user *compat_alloc_user_space(unsigned long len)
ptr = arch_compat_alloc_user_space(len);
- if (unlikely(!access_ok(VERIFY_WRITE, ptr, len)))
+ if (unlikely(!access_ok(ptr, len)))
return NULL;
return ptr;
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 67ecac337374..3cd13a30f732 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10135,7 +10135,7 @@ static int perf_copy_attr(struct perf_event_attr __user *uattr,
u32 size;
int ret;
- if (!access_ok(VERIFY_WRITE, uattr, PERF_ATTR_SIZE_VER0))
+ if (!access_ok(uattr, PERF_ATTR_SIZE_VER0))
return -EFAULT;
/*
diff --git a/kernel/exit.c b/kernel/exit.c
index 0e21e6d21f35..8a01b671dc1f 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1604,7 +1604,7 @@ SYSCALL_DEFINE5(waitid, int, which, pid_t, upid, struct siginfo __user *,
if (!infop)
return err;
- if (!access_ok(VERIFY_WRITE, infop, sizeof(*infop)))
+ if (!access_ok(infop, sizeof(*infop)))
return -EFAULT;
user_access_begin();
@@ -1732,7 +1732,7 @@ COMPAT_SYSCALL_DEFINE5(waitid,
if (!infop)
return err;
- if (!access_ok(VERIFY_WRITE, infop, sizeof(*infop)))
+ if (!access_ok(infop, sizeof(*infop)))
return -EFAULT;
user_access_begin();
diff --git a/kernel/futex.c b/kernel/futex.c
index 054105854e0e..be3bff2315ff 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -481,13 +481,18 @@ static void drop_futex_key_refs(union futex_key *key)
}
}
+enum futex_access {
+ FUTEX_READ,
+ FUTEX_WRITE
+};
+
/**
* get_futex_key() - Get parameters which are the keys for a futex
* @uaddr: virtual address of the futex
* @fshared: 0 for a PROCESS_PRIVATE futex, 1 for PROCESS_SHARED
* @key: address where result is stored.
- * @rw: mapping needs to be read/write (values: VERIFY_READ,
- * VERIFY_WRITE)
+ * @rw: mapping needs to be read/write (values: FUTEX_READ,
+ * FUTEX_WRITE)
*
* Return: a negative error code or 0
*
@@ -500,7 +505,7 @@ static void drop_futex_key_refs(union futex_key *key)
* lock_page() might sleep, the caller should not hold a spinlock.
*/
static int
-get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
+get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, enum futex_access rw)
{
unsigned long address = (unsigned long)uaddr;
struct mm_struct *mm = current->mm;
@@ -516,7 +521,7 @@ get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
return -EINVAL;
address -= key->both.offset;
- if (unlikely(!access_ok(rw, uaddr, sizeof(u32))))
+ if (unlikely(!access_ok(uaddr, sizeof(u32))))
return -EFAULT;
if (unlikely(should_fail_futex(fshared)))
@@ -546,7 +551,7 @@ again:
* If write access is not required (eg. FUTEX_WAIT), try
* and get read-only access.
*/
- if (err == -EFAULT && rw == VERIFY_READ) {
+ if (err == -EFAULT && rw == FUTEX_READ) {
err = get_user_pages_fast(address, 1, 0, &page);
ro = 1;
}
@@ -1583,7 +1588,7 @@ futex_wake(u32 __user *uaddr, unsigned int flags, int nr_wake, u32 bitset)
if (!bitset)
return -EINVAL;
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &key, VERIFY_READ);
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &key, FUTEX_READ);
if (unlikely(ret != 0))
goto out;
@@ -1642,7 +1647,7 @@ static int futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr)
oparg = 1 << oparg;
}
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
+ if (!access_ok(uaddr, sizeof(u32)))
return -EFAULT;
ret = arch_futex_atomic_op_inuser(op, oparg, &oldval, uaddr);
@@ -1682,10 +1687,10 @@ futex_wake_op(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
DEFINE_WAKE_Q(wake_q);
retry:
- ret = get_futex_key(uaddr1, flags & FLAGS_SHARED, &key1, VERIFY_READ);
+ ret = get_futex_key(uaddr1, flags & FLAGS_SHARED, &key1, FUTEX_READ);
if (unlikely(ret != 0))
goto out;
- ret = get_futex_key(uaddr2, flags & FLAGS_SHARED, &key2, VERIFY_WRITE);
+ ret = get_futex_key(uaddr2, flags & FLAGS_SHARED, &key2, FUTEX_WRITE);
if (unlikely(ret != 0))
goto out_put_key1;
@@ -1961,11 +1966,11 @@ static int futex_requeue(u32 __user *uaddr1, unsigned int flags,
}
retry:
- ret = get_futex_key(uaddr1, flags & FLAGS_SHARED, &key1, VERIFY_READ);
+ ret = get_futex_key(uaddr1, flags & FLAGS_SHARED, &key1, FUTEX_READ);
if (unlikely(ret != 0))
goto out;
ret = get_futex_key(uaddr2, flags & FLAGS_SHARED, &key2,
- requeue_pi ? VERIFY_WRITE : VERIFY_READ);
+ requeue_pi ? FUTEX_WRITE : FUTEX_READ);
if (unlikely(ret != 0))
goto out_put_key1;
@@ -2634,7 +2639,7 @@ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
* while the syscall executes.
*/
retry:
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q->key, VERIFY_READ);
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q->key, FUTEX_READ);
if (unlikely(ret != 0))
return ret;
@@ -2793,7 +2798,7 @@ static int futex_lock_pi(u32 __user *uaddr, unsigned int flags,
}
retry:
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q.key, VERIFY_WRITE);
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &q.key, FUTEX_WRITE);
if (unlikely(ret != 0))
goto out;
@@ -2972,7 +2977,7 @@ retry:
if ((uval & FUTEX_TID_MASK) != vpid)
return -EPERM;
- ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &key, VERIFY_WRITE);
+ ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &key, FUTEX_WRITE);
if (ret)
return ret;
@@ -3199,7 +3204,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
*/
rt_mutex_init_waiter(&rt_waiter);
- ret = get_futex_key(uaddr2, flags & FLAGS_SHARED, &key2, VERIFY_WRITE);
+ ret = get_futex_key(uaddr2, flags & FLAGS_SHARED, &key2, FUTEX_WRITE);
if (unlikely(ret != 0))
goto out;
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 1306fe0c1dc6..d3d170374ceb 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1466,7 +1466,7 @@ int do_syslog(int type, char __user *buf, int len, int source)
return -EINVAL;
if (!len)
return 0;
- if (!access_ok(VERIFY_WRITE, buf, len))
+ if (!access_ok(buf, len))
return -EFAULT;
error = wait_event_interruptible(log_wait,
syslog_seq != log_next_seq);
@@ -1484,7 +1484,7 @@ int do_syslog(int type, char __user *buf, int len, int source)
return -EINVAL;
if (!len)
return 0;
- if (!access_ok(VERIFY_WRITE, buf, len))
+ if (!access_ok(buf, len))
return -EFAULT;
error = syslog_print_all(buf, len, clear);
break;
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index c2cee9db5204..771e93f9c43f 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -1073,7 +1073,7 @@ int ptrace_request(struct task_struct *child, long request,
struct iovec kiov;
struct iovec __user *uiov = datavp;
- if (!access_ok(VERIFY_WRITE, uiov, sizeof(*uiov)))
+ if (!access_ok(uiov, sizeof(*uiov)))
return -EFAULT;
if (__get_user(kiov.iov_base, &uiov->iov_base) ||
@@ -1229,7 +1229,7 @@ int compat_ptrace_request(struct task_struct *child, compat_long_t request,
compat_uptr_t ptr;
compat_size_t len;
- if (!access_ok(VERIFY_WRITE, uiov, sizeof(*uiov)))
+ if (!access_ok(uiov, sizeof(*uiov)))
return -EFAULT;
if (__get_user(ptr, &uiov->iov_base) ||
diff --git a/kernel/rseq.c b/kernel/rseq.c
index c6242d8594dc..25e9a7b60eba 100644
--- a/kernel/rseq.c
+++ b/kernel/rseq.c
@@ -267,7 +267,7 @@ void __rseq_handle_notify_resume(struct ksignal *ksig, struct pt_regs *regs)
if (unlikely(t->flags & PF_EXITING))
return;
- if (unlikely(!access_ok(VERIFY_WRITE, t->rseq, sizeof(*t->rseq))))
+ if (unlikely(!access_ok(t->rseq, sizeof(*t->rseq))))
goto error;
ret = rseq_ip_fixup(regs);
if (unlikely(ret < 0))
@@ -295,7 +295,7 @@ void rseq_syscall(struct pt_regs *regs)
if (!t->rseq)
return;
- if (!access_ok(VERIFY_READ, t->rseq, sizeof(*t->rseq)) ||
+ if (!access_ok(t->rseq, sizeof(*t->rseq)) ||
rseq_get_rseq_cs(t, &rseq_cs) || in_rseq_cs(ip, &rseq_cs))
force_sig(SIGSEGV, t);
}
@@ -351,7 +351,7 @@ SYSCALL_DEFINE4(rseq, struct rseq __user *, rseq, u32, rseq_len,
if (!IS_ALIGNED((unsigned long)rseq, __alignof__(*rseq)) ||
rseq_len != sizeof(*rseq))
return -EINVAL;
- if (!access_ok(VERIFY_WRITE, rseq, rseq_len))
+ if (!access_ok(rseq, rseq_len))
return -EFAULT;
current->rseq = rseq;
current->rseq_len = rseq_len;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f66920173370..1f3e19fd6dc6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4450,7 +4450,7 @@ static int sched_copy_attr(struct sched_attr __user *uattr, struct sched_attr *a
u32 size;
int ret;
- if (!access_ok(VERIFY_WRITE, uattr, SCHED_ATTR_SIZE_VER0))
+ if (!access_ok(uattr, SCHED_ATTR_SIZE_VER0))
return -EFAULT;
/* Zero the full structure, so that a short copy will be nice: */
@@ -4650,7 +4650,7 @@ static int sched_read_attr(struct sched_attr __user *uattr,
{
int ret;
- if (!access_ok(VERIFY_WRITE, uattr, usize))
+ if (!access_ok(uattr, usize))
return -EFAULT;
/*
diff --git a/kernel/signal.c b/kernel/signal.c
index 53e07d97ffe0..e1d7ad8e6ab1 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3997,7 +3997,7 @@ SYSCALL_DEFINE3(sigaction, int, sig,
if (act) {
old_sigset_t mask;
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ if (!access_ok(act, sizeof(*act)) ||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
__get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
@@ -4012,7 +4012,7 @@ SYSCALL_DEFINE3(sigaction, int, sig,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ if (!access_ok(oact, sizeof(*oact)) ||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
__put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
@@ -4034,7 +4034,7 @@ COMPAT_SYSCALL_DEFINE3(sigaction, int, sig,
compat_uptr_t handler, restorer;
if (act) {
- if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+ if (!access_ok(act, sizeof(*act)) ||
__get_user(handler, &act->sa_handler) ||
__get_user(restorer, &act->sa_restorer) ||
__get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
@@ -4052,7 +4052,7 @@ COMPAT_SYSCALL_DEFINE3(sigaction, int, sig,
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ if (!access_ok(oact, sizeof(*oact)) ||
__put_user(ptr_to_compat(old_ka.sa.sa_handler),
&oact->sa_handler) ||
__put_user(ptr_to_compat(old_ka.sa.sa_restorer),
diff --git a/kernel/sys.c b/kernel/sys.c
index 64b5a230f38d..a48cbf1414b8 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2627,7 +2627,7 @@ COMPAT_SYSCALL_DEFINE1(sysinfo, struct compat_sysinfo __user *, info)
s.freehigh >>= bitcount;
}
- if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) ||
+ if (!access_ok(info, sizeof(struct compat_sysinfo)) ||
__put_user(s.uptime, &info->uptime) ||
__put_user(s.loads[0], &info->loads[0]) ||
__put_user(s.loads[1], &info->loads[1]) ||
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 9ddb6fddb4e0..8b068adb9da1 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -170,7 +170,7 @@ BPF_CALL_3(bpf_probe_write_user, void *, unsafe_ptr, const void *, src,
return -EPERM;
if (unlikely(uaccess_kernel()))
return -EPERM;
- if (!access_ok(VERIFY_WRITE, unsafe_ptr, size))
+ if (!access_ok(unsafe_ptr, size))
return -EPERM;
return probe_kernel_write(unsafe_ptr, src, size);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-28 22:14:00 +0000