locking/mutex: Initialize mutex::magic even when LOCKDEP=n
When DEBUG_MUTEXES=y and LOCKDEP=n, mutex_lock() still checks on
->magic, hence debug_mutex_init() should be called in
mutex_init_generic() as well. While we are at it, decouple LOCKDEP
logic from debug_mutex_init(), because in this way debug_mutex_init()
only needs one parameter, and we now have mutex_init_lockep() for
LOCKDEP=y scenarios.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/lkml/20251117202214.4f710f02@canb.auug.org.au/
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/lkml/20251121215819.GA1374726@ax162/
Fixes: 3572e2edc7b6 ("locking/mutex: Redo __mutex_init()")
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
3 files changed
