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author | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 13:16:17 +0300 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 13:16:58 +0300 |
commit | dd865f090f0382ba9e74dc4fe1008c08a67a6fca (patch) | |
tree | f41fbecea37957bdb6246b867e086fc40b5d0d77 /drivers | |
parent | be92e1ded1d17d68444a793fb07c118ab98b28b5 (diff) | |
parent | 967747bbc084b93b54e66f9047d342232314cd25 (diff) | |
download | linux-dd865f090f0382ba9e74dc4fe1008c08a67a6fca.tar.xz |
Merge branch 'set_fs-4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic into asm-generic
Christoph Hellwig and a few others spent a huge effort on removing
set_fs() from most of the important architectures, but about half the
other architectures were never completed even though most of them don't
actually use set_fs() at all.
I did a patch for microblaze at some point, which turned out to be fairly
generic, and now ported it to most other architectures, using new generic
implementations of access_ok() and __{get,put}_kernel_nocheck().
Three architectures (sparc64, ia64, and sh) needed some extra work,
which I also completed.
* 'set_fs-4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
uaccess: remove CONFIG_SET_FS
ia64: remove CONFIG_SET_FS support
sh: remove CONFIG_SET_FS support
sparc64: remove CONFIG_SET_FS support
lib/test_lockup: fix kernel pointer check for separate address spaces
uaccess: generalize access_ok()
uaccess: fix type mismatch warnings from access_ok()
arm64: simplify access_ok()
m68k: fix access_ok for coldfire
MIPS: use simpler access_ok()
MIPS: Handle address errors for accesses above CPU max virtual user address
uaccess: add generic __{get,put}_kernel_nofault
nios2: drop access_ok() check from __put_user()
x86: use more conventional access_ok() definition
x86: remove __range_not_ok()
sparc64: add __{get,put}_kernel_nofault()
nds32: fix access_ok() checks in get/put_user
uaccess: fix nios2 and microblaze get_user_8()
uaccess: fix integer overflow on access_ok()
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/hid/uhid.c | 2 | ||||
-rw-r--r-- | drivers/scsi/sg.c | 5 |
2 files changed, 1 insertions, 6 deletions
diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index 614adb510dbd..2a918aeb0af1 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -747,7 +747,7 @@ static ssize_t uhid_char_write(struct file *file, const char __user *buffer, * copied from, so it's unsafe to allow this with elevated * privileges (e.g. from a setuid binary) or via kernel_write(). */ - if (file->f_cred != current_cred() || uaccess_kernel()) { + if (file->f_cred != current_cred()) { pr_err_once("UHID_CREATE from different security context by process %d (%s), this is not allowed.\n", task_tgid_vnr(current), current->comm); ret = -EACCES; diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 6b43e97bd417..aaa2376b9d34 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -224,11 +224,6 @@ static int sg_check_file_access(struct file *filp, const char *caller) caller, task_tgid_vnr(current), current->comm); return -EPERM; } - if (uaccess_kernel()) { - pr_err_once("%s: process %d (%s) called from kernel context, this is not allowed.\n", - caller, task_tgid_vnr(current), current->comm); - return -EACCES; - } return 0; } |