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| author | Arnd Bergmann <arnd@arndb.de> | 2022-02-14 20:22:10 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 09:36:05 +0100 |
| commit | 23fc539e81295b14b50c6ccc5baeb4f3d59d822d (patch) | |
| tree | c4efbc0e265a797a6284fa49a66c19b16b6c5005 /arch/arm | |
| parent | 52fe8d125c9afecc6fff6afd9950a388488df2ce (diff) | |
| download | linux-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.tar.gz linux-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.tar.bz2 linux-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.zip | |
uaccess: fix type mismatch warnings from access_ok()
On some architectures, access_ok() does not do any argument type
checking, so replacing the definition with a generic one causes
a few warnings for harmless issues that were never caught before.
Fix the ones that I found either through my own test builds or
that were reported by the 0-day bot.
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/kernel/swp_emulate.c | 2 | ||||
| -rw-r--r-- | arch/arm/kernel/traps.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c index 6166ba38bf99..b74bfcf94fb1 100644 --- a/arch/arm/kernel/swp_emulate.c +++ b/arch/arm/kernel/swp_emulate.c @@ -195,7 +195,7 @@ static int swp_handler(struct pt_regs *regs, unsigned int instr) destreg, EXTRACT_REG_NUM(instr, RT2_OFFSET), data); /* Check access in reasonable access range for both SWP and SWPB */ - if (!access_ok((address & ~3), 4)) { + if (!access_ok((void __user *)(address & ~3), 4)) { pr_debug("SWP{B} emulation: access to %p not allowed!\n", (void *)address); res = -EFAULT; diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index da04ed85855a..26c8c8276297 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -576,7 +576,7 @@ do_cache_op(unsigned long start, unsigned long end, int flags) if (end < start || flags) return -EINVAL; - if (!access_ok(start, end - start)) + if (!access_ok((void __user *)start, end - start)) return -EFAULT; return __do_cache_op(start, end); |