zephyr

Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

bluetooth bluetooth-le embedded embedded-c iot mcu microcontroller real-time rtos zephyr zephyr-rtos zephyros

History

Josh DeWitt c9674ad58b kernel/sched: Re-sort waitq on priority change k_thread_priority_set() on a pended thread wasn't re-inserting into the waitq, causing the incorrect thread to run based on priority. When using the scalable waitq config, this can also break assumptions of the tree and leave the owner of a waitq still being in the waitq tree, cycles in the tree, or a crash. Remove and re-add a thread to a waitq to ensure the waitq remains in order and the tree's assumptions are not violated. To illustrate the issue, consider 4 threads in decreasing priority order: A, B, C, and D along with two mutexes, m0 and m1. This is implemented in the new complex_inversion mutex_api test. 1. D locks m1 2. C locks m0 3. C pends on m1 4. B pends on m1 5. A pends on m0, boosts C's priority, now tree on m1 is not sorted 6. D unlocks m1, left-most thread on tree is B. When removing B from tree it cannot be found because it searches to the right of C due to C's boosted priority when the node is actually on the left. rb_remove silently fails. 7. B unlocks m1, left-most thread on tree is still B and it tries to unpend itself, resulting in a NULL pointer dereference on B->base.pended_on. Signed-off-by: Josh DeWitt <josh.dewitt@garmin.com> (cherry picked from commit `c05cfbf15e`)		2 months ago
..
include	kernel: Change z_handle_obj_poll_events() return type	5 months ago
paging	kernel: mm: rename z_num_pagefaults_get to k_mem_num_*	1 year ago
CMakeLists.txt	kernel: Rewrite k_pipe_* API	6 months ago
Kconfig	kernel: thread: fix thread priority off-by-one error	5 months ago
Kconfig.device	libc: common: Fix init hang issue	1 year ago
Kconfig.init	init: support per-core init hook	8 months ago
Kconfig.mem_domain	kconfig: replace known integer constants with variables	12 months ago
Kconfig.obj_core	kernel: Rewrite k_pipe_* API	6 months ago
Kconfig.smp	kernel: remove `CONFIG_MP_NUM_CPUS`	10 months ago
Kconfig.vm	arch: mmu: do not make MMU user configurable	5 months ago
atomic_c.c	build: namespace the generated headers with `zephyr/`	1 year ago
banner.c	kernel: banner: Add option to clear screen on boot	1 year ago
busy_wait.c	build: namespace the generated headers with `zephyr/`	1 year ago
compiler_stack_protect.c	security: Add default stack protection level	7 months ago
condvar.c	kernel: condvar: broadcast does not always need reschedule	5 months ago
cpu_mask.c	kernel: Simplify k_thread_cpu_pin()	10 months ago
device.c	device: Optimize device_get_binding search efficiency	7 months ago
dynamic.c	kernel: dynamic: simplify dynamic stack allocation	7 months ago
dynamic_disabled.c	kernel: dynamic: declare dynamic stubs when disabled	2 years ago
errno.c	Revert "arch: deprecate `_current`"	6 months ago
events.c	build: namespace the generated headers with `zephyr/`	1 year ago
fatal.c	Revert "arch: deprecate `_current`"	6 months ago
float.c	build: namespace the generated headers with `zephyr/`	1 year ago
futex.c	kernel: futex: Allow for fast return on k_futex_wake()	5 months ago
idle.c	llext: export spinlock debugging symbols to extensions	5 months ago
init.c	security: Additional option for stack canaries	7 months ago
init_static.c	lib c/cpp: Move .ctor .init_array handling from C++ to kernel	1 year ago
ipi.c	Revert "arch: deprecate `_current`"	6 months ago
irq_offload.c	kernel: add closing comments to config endifs	1 year ago
kheap.c	kernel: Initialize kheap spinlock	5 months ago
mailbox.c	Revert "arch: deprecate `_current`"	6 months ago
main_weak.c	kernel: Switch main return type from void to int	2 years ago
mem_domain.c	Revert "arch: deprecate `_current`"	6 months ago
mem_slab.c	Revert "arch: deprecate `_current`"	6 months ago
mempool.c	Revert "arch: deprecate `_current`"	6 months ago
mmu.c	Revert "arch: deprecate `_current`"	6 months ago
msg_q.c	kernel: msgq: Allow for fast returns	5 months ago
mutex.c	Revert "arch: deprecate `_current`"	6 months ago
nothread.c	kernel: fix k_sleep in no multi-threading mode	8 months ago
obj_core.c	kernel: reduce `k_spin_unlock` calls using `if-else if-else` structure	12 months ago
pipe.c	k_pipe: fix trace point for blocking writes	5 months ago
pipes.c	kernel: Propagate z_handle_obj_poll_events() return	5 months ago
poll.c	kernel: Change z_handle_obj_poll_events() return type	5 months ago
priority_queues.c	kernel: priority queues: declare as static inlines	1 year ago
queue.c	kernel: queue: Allow for fast return	5 months ago
sched.c	kernel/sched: Re-sort waitq on priority change	2 months ago
sem.c	kernel: Allow for fast return on k_sem_reset()	5 months ago
smp.c	kernel: mark z_smp_current_get() with the const attribute	6 months ago
spinlock_validate.c	llext: export spinlock debugging symbols to extensions	5 months ago
stack.c	Revert "arch: deprecate `_current`"	6 months ago
system_work_q.c	kernel: system_work_q: Mark queue thread as essential	1 year ago
thread.c	kernel: thread: fix warning of always false	5 months ago
thread_monitor.c	style: kernel: comply with MISRA C:2012 Rule 15.6	10 months ago
timeout.c	kernel: Add timeout_lock usage notes	5 months ago
timer.c	build: namespace the generated headers with `zephyr/`	1 year ago
timeslicing.c	Revert "arch: deprecate `_current`"	6 months ago
usage.c	kernel: Remove duplicate execution_cycles write and improve docstring	1 year ago
userspace.c	Revert "arch: deprecate `_current`"	6 months ago
userspace_handler.c	Revert "arch: deprecate `_current`"	6 months ago
version.c	build: namespace the generated headers with `zephyr/`	1 year ago
work.c	Revert "arch: deprecate `_current`"	6 months ago
xip.c	security: Additional option for stack canaries	7 months ago