tty_ldisc_lock identifier - Linux source code next-20260811

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linux

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FIXME
- FIXME
  - next-20260811

Defined in 1 files as a prototype:

drivers/tty/tty.h, line 63 (as a prototype)

Defined in 1 files as a function:

drivers/tty/tty_ldisc.c, line 304 (as a function)

Referenced in 2 files:

Smatch caller information:

drivers/tty/tty_io.c tty_init_dev() -> tty_ldisc_lock()

Type	Parameter	Key	Value
PARAM_VALUE	0	tty	4096-ptr_max
PARAM_VALUE	0	tty->atomic_write_lock.dep_map->name	0-255
PARAM_VALUE	0	tty->atomic_write_lock.first_waiter	0
PARAM_VALUE	0	tty->atomic_write_lock.magic	4096-ptr_max
PARAM_VALUE	0	tty->atomic_write_lock.osq.tail.counter	0
PARAM_VALUE	0	tty->atomic_write_lock.owner.counter	0
PARAM_VALUE	0	tty->ctrl.pgrp	0
PARAM_VALUE	0	tty->ctrl.session	0
PARAM_VALUE	0	tty->dev	0,4096-ptr_max
PARAM_VALUE	0	tty->driver	4096-ptr_max
PARAM_VALUE	0	tty->driver->owner	0,4096-ptr_max
PARAM_VALUE	0	tty->ldisc	4096-ptr_max
PARAM_VALUE	0	tty->ldisc->ops	4096-ptr_max
PARAM_VALUE	0	tty->ldisc->tty	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.count.counter	0
PARAM_VALUE	0	tty->ldisc_sem.dep_map->name	0-255
PARAM_VALUE	0	tty->ldisc_sem.read_wait.next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.next->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev->prev	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.wait_lock.magic	3735899821
PARAM_VALUE	0	tty->ldisc_sem.wait_lock.owner	(-1)
PARAM_VALUE	0	tty->ldisc_sem.wait_lock.owner_cpu	u32max
PARAM_VALUE	0	tty->ldisc_sem.wait_readers	0
PARAM_VALUE	0	tty->ldisc_sem.write_wait.next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.write_wait.next->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.write_wait.prev	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.write_wait.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.write_wait.prev->prev	4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->legacy_mutex.first_waiter	0,4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	0	tty->ops	4096-ptr_max
PARAM_VALUE	0	tty->ops->lookup	0,4096-ptr_max
PARAM_VALUE	0	tty->port	1-u64max
PARAM_VALUE	0	tty->read_wait.head.next	4096-ptr_max
PARAM_VALUE	0	tty->read_wait.head.next->next	4096-ptr_max
PARAM_VALUE	0	tty->read_wait.head.prev	4096-ptr_max
PARAM_VALUE	0	tty->read_wait.head.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->read_wait.head.prev->prev	4096-ptr_max
PARAM_VALUE	0	tty->termios_rwsem.count.counter	0
PARAM_VALUE	0	tty->termios_rwsem.dep_map->name	0-255
PARAM_VALUE	0	tty->termios_rwsem.first_waiter	0
PARAM_VALUE	0	tty->termios_rwsem.magic	4096-ptr_max
PARAM_VALUE	0	tty->termios_rwsem.osq.tail.counter	0
PARAM_VALUE	0	tty->termios_rwsem.owner.counter	0
PARAM_VALUE	0	tty->throttle_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->throttle_mutex.first_waiter	0
PARAM_VALUE	0	tty->throttle_mutex.magic	4096-ptr_max
PARAM_VALUE	0	tty->throttle_mutex.osq.tail.counter	0
PARAM_VALUE	0	tty->throttle_mutex.owner.counter	0
PARAM_VALUE	0	tty->tty_files.next	4096-ptr_max
PARAM_VALUE	0	tty->tty_files.next->next	4096-ptr_max
PARAM_VALUE	0	tty->tty_files.prev	4096-ptr_max
PARAM_VALUE	0	tty->tty_files.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->tty_files.prev->prev	4096-ptr_max
PARAM_VALUE	0	tty->winsize_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->winsize_mutex.first_waiter	0
PARAM_VALUE	0	tty->winsize_mutex.magic	4096-ptr_max
PARAM_VALUE	0	tty->winsize_mutex.osq.tail.counter	0
PARAM_VALUE	0	tty->winsize_mutex.owner.counter	0
PARAM_VALUE	0	tty->write_wait.head.next	4096-ptr_max
PARAM_VALUE	0	tty->write_wait.head.next->next	4096-ptr_max
PARAM_VALUE	0	tty->write_wait.head.prev	4096-ptr_max
PARAM_VALUE	0	tty->write_wait.head.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->write_wait.head.prev->prev	4096-ptr_max
PARAM_VALUE	1	timeout	1250
BUF_SIZE	0	tty	1816
DATA_SOURCE	0	tty	r alloc_tty_struct
RX_PATH
TASK_NOT_RUNNING
LOCK2	0	&tty->legacy_mutex
HALF_LOCKED2		_T->lock
HALF_LOCKED2		global &spk_mutex
HALF_LOCKED2		global &tty_mutex
TYPE_LOCK		(struct tty_struct)->legacy_mutex

drivers/tty/tty_io.c tty_reopen() -> tty_ldisc_lock()

Type	Parameter	Key	Value
PARAM_VALUE	0	tty	4096-ptr_max
PARAM_VALUE	0	tty->count	s32min-(-1),1-s32max
PARAM_VALUE	0	tty->driver	4096-ptr_max
PARAM_VALUE	0	tty->ldisc	0
PARAM_VALUE	0	tty->ldisc_sem.dep_map->name	0-255
PARAM_VALUE	0	tty->ldisc_sem.read_wait.next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.next->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev->next->next	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.read_wait.prev->prev	4096-ptr_max
PARAM_VALUE	0	tty->ldisc_sem.wait_readers	0
PARAM_VALUE	0	tty->legacy_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->legacy_mutex.first_waiter	0,4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	1	timeout	1250
BUF_SIZE	0	tty	(-1),1-s32max
BUF_SIZE	0	tty	(-1),1-s32max
DATA_SOURCE	0	tty	$0
RX_PATH
TASK_NOT_RUNNING
LOCK2	0	&tty->legacy_mutex
TYPE_LOCK		(struct tty_struct)->legacy_mutex

drivers/tty/tty_ldisc.c tty_ldisc_hangup() -> tty_ldisc_lock()

Type	Parameter	Key	Value
PARAM_VALUE	0	tty	4096-ptr_max
PARAM_VALUE	0	tty->ctrl.session	0,4096-ptr_max
PARAM_VALUE	0	tty->driver	4096-ptr_max
PARAM_VALUE	0	tty->files_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	tty->legacy_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->legacy_mutex.first_waiter	0,4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->prev	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	0	tty->ops->chars_in_buffer	0,4096-ptr_max
PARAM_VALUE	0	tty->port	4096-ptr_max
PARAM_VALUE	0	tty->read_wait.lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	tty->termios_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	tty->termios_rwsem.first_waiter->type	0-1
PARAM_VALUE	0	tty->write_wait.lock.rlock.dep_map->name	0-255
PARAM_VALUE	1	timeout	9223372036854775807
BUF_SIZE	0	tty	(-1),1-s32max
BUF_SIZE	0	tty	(-1),1-s32max
CAPPED_DATA	0	tty	1
DATA_SOURCE	0	tty	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2	0	&tty->legacy_mutex
HALF_LOCKED2	0	&tty->driver_data->d_lockref.lock
HALF_LOCKED2	0	&tty->ldisc_sem
TYPE_LOCK		(struct tty_struct)->legacy_mutex

drivers/tty/tty_ldisc.c tty_set_ldisc() -> tty_ldisc_lock()

Type	Parameter	Key	Value
PARAM_VALUE	0	tty	4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.dep_map->name	0-255
PARAM_VALUE	0	tty->legacy_mutex.first_waiter	0,4096-ptr_max
PARAM_VALUE	0	tty->legacy_mutex.first_waiter->list.prev->next	5159360019465732096
PARAM_VALUE	0	tty->legacy_mutex.osq.tail.counter	0-s32max
PARAM_VALUE	0	tty->ops	4096-ptr_max
PARAM_VALUE	0	tty->ops->open	0,4096-ptr_max
PARAM_VALUE	0	tty->ops->set_termios	0,4096-ptr_max
PARAM_VALUE	0	tty->termios_rwsem.first_waiter->handoff_set	0-1
PARAM_VALUE	0	tty->termios_rwsem.first_waiter->type	0-1
PARAM_VALUE	1	timeout	1250
BUF_SIZE	0	tty	(-1),1816
BUF_SIZE	0	tty	(-1),1816
CAPPED_DATA	0	tty	1
DATA_SOURCE	0	tty	$0
RX_PATH
TASK_NOT_RUNNING
LOCK2	0	&tty->legacy_mutex
HALF_LOCKED2		global &speakup_tty_mutex
HALF_LOCKED2		global &spk_mutex
TYPE_LOCK		(struct tty_struct)->legacy_mutex