Feature #3399
Updated by Vadim Mutilin over 9 years ago
It is necessary to use semaphore correctly. This rule checks usage of the functions: functions up_read, down_read, up_write, down_write, down_read_trylock, down_write_trylock, downgrade_write, down_read_nested, down_write_nested. * - multiple write locks are not permitted - multiple write unlocks are not permitted * - read lock is not permitted after write lock * - write lock is not permitted after read lock * - read and write locks must be free at the end Commit 82163edcdf on torvalds fix the last one. *Links* Sample bugfixes "506218e":https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=506218e, "de79143":https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=de79143