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| author | Oleg Nesterov <[email protected]> | 2013-12-14 16:33:17 +0000 |
|---|---|---|
| committer | Paul Moore <[email protected]> | 2013-12-16 21:00:29 +0000 |
| commit | 465954cd649a7d8cd331695bd24a16bcb5c4c716 (patch) | |
| tree | 8c0e5ee5d4073fb24e4b58719488da578cfe49f8 /drivers/infiniband/hw/mlx4/alias_GUID.c | |
| parent | SELinux: remove duplicated include from hooks.c (diff) | |
| download | kernel-465954cd649a7d8cd331695bd24a16bcb5c4c716.tar.gz kernel-465954cd649a7d8cd331695bd24a16bcb5c4c716.zip | |
selinux: selinux_setprocattr()->ptrace_parent() needs rcu_read_lock()
selinux_setprocattr() does ptrace_parent(p) under task_lock(p),
but task_struct->alloc_lock doesn't pin ->parent or ->ptrace,
this looks confusing and triggers the "suspicious RCU usage"
warning because ptrace_parent() does rcu_dereference_check().
And in theory this is wrong, spin_lock()->preempt_disable()
doesn't necessarily imply rcu_read_lock() we need to access
the ->parent.
Reported-by: Evan McNabb <[email protected]>
Signed-off-by: Oleg Nesterov <[email protected]>
Cc: [email protected]
Signed-off-by: Paul Moore <[email protected]>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/alias_GUID.c')
0 files changed, 0 insertions, 0 deletions