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| author | John Johansen <[email protected]> | 2020-01-02 13:31:22 +0000 |
|---|---|---|
| committer | John Johansen <[email protected]> | 2020-01-04 23:56:44 +0000 |
| commit | 8c62ed27a12c00e3db1c9f04bc0f272bdbb06734 (patch) | |
| tree | 7bbe5954a3d15944b17e1cc732eb0f479276ffda /drivers/iio/trigger/stm32-timer-trigger.c | |
| parent | apparmor: only get a label reference if the fast path check fails (diff) | |
| download | kernel-8c62ed27a12c00e3db1c9f04bc0f272bdbb06734.tar.gz kernel-8c62ed27a12c00e3db1c9f04bc0f272bdbb06734.zip | |
apparmor: fix aa_xattrs_match() may sleep while holding a RCU lock
aa_xattrs_match() is unfortunately calling vfs_getxattr_alloc() from a
context protected by an rcu_read_lock. This can not be done as
vfs_getxattr_alloc() may sleep regardles of the gfp_t value being
passed to it.
Fix this by breaking the rcu_read_lock on the policy search when the
xattr match feature is requested and restarting the search if a policy
changes occur.
Fixes: 8e51f9087f40 ("apparmor: Add support for attaching profiles via xattr, presence and value")
Reported-by: Jia-Ju Bai <[email protected]>
Reported-by: Al Viro <[email protected]>
Signed-off-by: John Johansen <[email protected]>
Diffstat (limited to 'drivers/iio/trigger/stm32-timer-trigger.c')
0 files changed, 0 insertions, 0 deletions