75845c6c1a
Once a key's reference count has been reduced to 0, the garbage collector
thread may destroy it at any time and so key_put() is not allowed to touch
the key after that point. The most key_put() is normally allowed to do is
to touch key_gc_work as that's a static global variable.
However, in an effort to speed up the reclamation of quota, this is now
done in key_put() once the key's usage is reduced to 0 - but now the code
is looking at the key after the deadline, which is forbidden.
Fix this by using a flag to indicate that a key can be gc'd now rather than
looking at the key's refcount in the garbage collector.
Fixes:
|
||
|---|---|---|
| .. | ||
| encrypted-keys | ||
| trusted-keys | ||
| Kconfig | ||
| Makefile | ||
| big_key.c | ||
| compat.c | ||
| compat_dh.c | ||
| dh.c | ||
| gc.c | ||
| internal.h | ||
| key.c | ||
| keyctl.c | ||
| keyctl_pkey.c | ||
| keyring.c | ||
| permission.c | ||
| persistent.c | ||
| proc.c | ||
| process_keys.c | ||
| request_key.c | ||
| request_key_auth.c | ||
| sysctl.c | ||
| user_defined.c | ||