linux-stable

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-28 13:22:57 +00:00

No description

Find a file

Dmitry Baryshkov 502c33c7e7 dma: gpi: remove spurious unlock in gpi_ch_init [ Upstream commit `91d6a468e3` ] gpi_ch_init() doesn't lock the ctrl_lock mutex, so there is no need to unlock it too. Instead the mutex is handled by the function gpi_alloc_chan_resources(), which properly locks and unlocks the mutex. ===================================== WARNING: bad unlock balance detected! 6.3.0-rc5-00253-g99792582ded1-dirty #15 Not tainted ------------------------------------- kworker/u16:0/9 is trying to release lock (&gpii->ctrl_lock) at: [<ffffb99d04e1284c>] gpi_alloc_chan_resources+0x108/0x5bc but there are no more locks to release! other info that might help us debug this: 6 locks held by kworker/u16:0/9: #0: ffff575740010938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x220/0x594 #1: ffff80000809bdd0 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x220/0x594 #2: ffff575740f2a0f8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x38/0x188 #3: ffff57574b5570f8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x38/0x188 #4: ffffb99d06a2f180 (of_dma_lock){+.+.}-{3:3}, at: of_dma_request_slave_channel+0x138/0x280 #5: ffffb99d06a2ee20 (dma_list_mutex){+.+.}-{3:3}, at: dma_get_slave_channel+0x28/0x10c stack backtrace: CPU: 7 PID: 9 Comm: kworker/u16:0 Not tainted 6.3.0-rc5-00253-g99792582ded1-dirty #15 Hardware name: Google Pixel 3 (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: dump_backtrace+0xa0/0xfc show_stack+0x18/0x24 dump_stack_lvl+0x60/0xac dump_stack+0x18/0x24 print_unlock_imbalance_bug+0x130/0x148 lock_release+0x270/0x300 __mutex_unlock_slowpath+0x48/0x2cc mutex_unlock+0x20/0x2c gpi_alloc_chan_resources+0x108/0x5bc dma_chan_get+0x84/0x188 dma_get_slave_channel+0x5c/0x10c gpi_of_dma_xlate+0x110/0x1a0 of_dma_request_slave_channel+0x174/0x280 dma_request_chan+0x3c/0x2d4 geni_i2c_probe+0x544/0x63c platform_probe+0x68/0xc4 really_probe+0x148/0x2ac __driver_probe_device+0x78/0xe0 driver_probe_device+0x3c/0x160 __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x84/0xe0 __device_attach+0x9c/0x188 device_initial_probe+0x14/0x20 bus_probe_device+0xac/0xb0 device_add+0x60c/0x7d8 of_device_add+0x44/0x60 of_platform_device_create_pdata+0x90/0x124 of_platform_bus_create+0x15c/0x3c8 of_platform_populate+0x58/0xf8 devm_of_platform_populate+0x58/0xbc geni_se_probe+0xf0/0x164 platform_probe+0x68/0xc4 really_probe+0x148/0x2ac __driver_probe_device+0x78/0xe0 driver_probe_device+0x3c/0x160 __device_attach_driver+0xb8/0x138 bus_for_each_drv+0x84/0xe0 __device_attach+0x9c/0x188 device_initial_probe+0x14/0x20 bus_probe_device+0xac/0xb0 deferred_probe_work_func+0x8c/0xc8 process_one_work+0x2bc/0x594 worker_thread+0x228/0x438 kthread+0x108/0x10c ret_from_fork+0x10/0x20 Fixes: `5d0c3533a1` ("dmaengine: qcom: Add GPI dma driver") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20230409233355.453741-1-dmitry.baryshkov@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-11 23:03:37 +09:00
arch	openrisc: Properly store r31 to pt_regs on unhandled exceptions	2023-05-11 23:03:35 +09:00
block	blk-mq: don't plug for head insertions in blk_execute_rq_nowait	2023-05-11 23:03:22 +09:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-02-09 11:28:11 +01:00
crypto	crypto: drbg - Only fail when jent is unavailable in FIPS mode	2023-05-11 23:03:21 +09:00
Documentation	ASoC: dt-bindings: qcom,lpass-rx-macro: correct minItems for clocks	2023-05-11 23:03:05 +09:00
drivers	dma: gpi: remove spurious unlock in gpi_ch_init	2023-05-11 23:03:37 +09:00
fs	ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline	2023-05-11 23:03:36 +09:00
include	SUNRPC: remove the maximum number of retries in call_bind_status	2023-05-11 23:03:35 +09:00
init	gcc: disable '-Warray-bounds' for gcc-13 too	2023-04-26 14:28:43 +02:00
io_uring	io_uring/rsrc: use nospec'ed indexes	2023-05-11 23:03:24 +09:00
ipc	ipc: fix memory leak in init_mqueue_fs()	2022-12-31 13:32:01 +01:00
kernel	timekeeping: Fix references to nonexistent ktime_get_fast_ns()	2023-05-11 23:03:35 +09:00
lib	debugobject: Prevent init race with static objects	2023-05-11 23:03:16 +09:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	mm/mempolicy: fix use-after-free of VMA iterator	2023-05-01 08:26:27 +09:00
net	SUNRPC: remove the maximum number of retries in call_bind_status	2023-05-11 23:03:35 +09:00
rust	rust: kernel: Mark rust_fmt_argument as extern "C"	2023-04-26 14:28:38 +02:00
samples	ftrace: Export ftrace_free_filter() to modules	2023-02-01 08:34:37 +01:00
scripts	scripts/gdb: raise error with reduced debugging information	2023-05-11 23:03:30 +09:00
security	selinux: ensure av_permissions.h is built when needed	2023-05-11 23:03:06 +09:00
sound	ASoC: fsl_mqs: move of_node_put() to the correct location	2023-05-11 23:03:29 +09:00
tools	tracing/user_events: Ensure write index cannot be negative	2023-05-11 23:03:32 +09:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	KVM: Register /dev/kvm as the _very_ last thing during initialization	2023-03-10 09:34:11 +01:00
.clang-format	inet: ping: use hlist_nulls rcu iterator during lookup	2022-12-01 12:42:46 +01:00
.cocciconfig
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	Kbuild: add Rust support	2022-09-28 09:02:20 +02:00
.mailmap	9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address	2022-12-10 17:10:52 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Remove Michal Marek from Kbuild maintainers	2022-11-16 14:53:00 +09:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	audit: update the mailing list in MAINTAINERS	2023-02-25 11:25:42 +01:00
Makefile	Linux 6.1.27	2023-05-01 08:26:28 +09:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.