Blaster4385/linux-IllusionX: Performance oriented customized Linux kernel based on the mainline kernel.

Performance oriented customized Linux kernel based on the mainline kernel.

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Yang Yang f5418f48a9 block: fix deadlock between sd_remove & sd_release commit `7e04da2dc7` upstream. Our test report the following hung task: [ 2538.459400] INFO: task "kworker/0:0":7 blocked for more than 188 seconds. [ 2538.459427] Call trace: [ 2538.459430] __switch_to+0x174/0x338 [ 2538.459436] __schedule+0x628/0x9c4 [ 2538.459442] schedule+0x7c/0xe8 [ 2538.459447] schedule_preempt_disabled+0x24/0x40 [ 2538.459453] __mutex_lock+0x3ec/0xf04 [ 2538.459456] __mutex_lock_slowpath+0x14/0x24 [ 2538.459459] mutex_lock+0x30/0xd8 [ 2538.459462] del_gendisk+0xdc/0x350 [ 2538.459466] sd_remove+0x30/0x60 [ 2538.459470] device_release_driver_internal+0x1c4/0x2c4 [ 2538.459474] device_release_driver+0x18/0x28 [ 2538.459478] bus_remove_device+0x15c/0x174 [ 2538.459483] device_del+0x1d0/0x358 [ 2538.459488] __scsi_remove_device+0xa8/0x198 [ 2538.459493] scsi_forget_host+0x50/0x70 [ 2538.459497] scsi_remove_host+0x80/0x180 [ 2538.459502] usb_stor_disconnect+0x68/0xf4 [ 2538.459506] usb_unbind_interface+0xd4/0x280 [ 2538.459510] device_release_driver_internal+0x1c4/0x2c4 [ 2538.459514] device_release_driver+0x18/0x28 [ 2538.459518] bus_remove_device+0x15c/0x174 [ 2538.459523] device_del+0x1d0/0x358 [ 2538.459528] usb_disable_device+0x84/0x194 [ 2538.459532] usb_disconnect+0xec/0x300 [ 2538.459537] hub_event+0xb80/0x1870 [ 2538.459541] process_scheduled_works+0x248/0x4dc [ 2538.459545] worker_thread+0x244/0x334 [ 2538.459549] kthread+0x114/0x1bc [ 2538.461001] INFO: task "fsck.":15415 blocked for more than 188 seconds. [ 2538.461014] Call trace: [ 2538.461016] __switch_to+0x174/0x338 [ 2538.461021] __schedule+0x628/0x9c4 [ 2538.461025] schedule+0x7c/0xe8 [ 2538.461030] blk_queue_enter+0xc4/0x160 [ 2538.461034] blk_mq_alloc_request+0x120/0x1d4 [ 2538.461037] scsi_execute_cmd+0x7c/0x23c [ 2538.461040] ioctl_internal_command+0x5c/0x164 [ 2538.461046] scsi_set_medium_removal+0x5c/0xb0 [ 2538.461051] sd_release+0x50/0x94 [ 2538.461054] blkdev_put+0x190/0x28c [ 2538.461058] blkdev_release+0x28/0x40 [ 2538.461063] __fput+0xf8/0x2a8 [ 2538.461066] __fput_sync+0x28/0x5c [ 2538.461070] __arm64_sys_close+0x84/0xe8 [ 2538.461073] invoke_syscall+0x58/0x114 [ 2538.461078] el0_svc_common+0xac/0xe0 [ 2538.461082] do_el0_svc+0x1c/0x28 [ 2538.461087] el0_svc+0x38/0x68 [ 2538.461090] el0t_64_sync_handler+0x68/0xbc [ 2538.461093] el0t_64_sync+0x1a8/0x1ac T1: T2: sd_remove del_gendisk __blk_mark_disk_dead blk_freeze_queue_start ++q->mq_freeze_depth bdev_release mutex_lock(&disk->open_mutex) sd_release scsi_execute_cmd blk_queue_enter wait_event(!q->mq_freeze_depth) mutex_lock(&disk->open_mutex) SCSI does not set GD_OWNS_QUEUE, so QUEUE_FLAG_DYING is not set in this scenario. This is a classic ABBA deadlock. To fix the deadlock, make sure we don't try to acquire disk->open_mutex after freezing the queue. Cc: stable@vger.kernel.org Fixes: `eec1be4c30` ("block: delete partitions later in del_gendisk") Signed-off-by: Yang Yang <yang.yang@vivo.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Fixes: and Cc: stable tags are missing. Otherwise this patch looks fine Link: https://lore.kernel.org/r/20240724070412.22521-1-yang.yang@vivo.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-08-03 09:00:47 +02:00
arch	parisc: Fix warning at drivers/pci/msi/msi.h:121	2024-08-03 09:00:43 +02:00
block	block: fix deadlock between sd_remove & sd_release	2024-08-03 09:00:47 +02:00
certs
crypto	This push fixes a bug in the new ecc P521 code as well as a buggy	2024-05-20 08:47:54 -07:00
Documentation	KVM: PPC: Book3S HV nestedv2: Add DPDES support in helper library for Guest state buffer	2024-08-03 09:00:41 +02:00
drivers	clk: samsung: fix getting Exynos4 fin_pll rate from external clocks	2024-08-03 09:00:47 +02:00
fs	nilfs2: handle inconsistent state in nilfs_btnode_create_block()	2024-08-03 09:00:47 +02:00
include	fbdev: vesafb: Detect VGA compatibility from screen info's VESA attributes	2024-08-03 09:00:43 +02:00
init	gcc: disable '-Warray-bounds' for gcc-9	2024-06-15 10:43:04 -07:00
io_uring	io_uring: don't allow netpolling with SETUP_IOPOLL	2024-08-03 09:00:37 +02:00
ipc	Mainly singleton patches, documented in their respective changelogs.	2024-05-19 14:02:03 -07:00
kernel	trace/pid_list: Change gfp flags in pid_list_fill_irq()	2024-08-03 09:00:37 +02:00
lib	sbitmap: fix io hung due to race on sbitmap_word::cleared	2024-08-03 09:00:26 +02:00
LICENSES
mm	mm/page_alloc: fix pcp->count race between drain_pages_zone() vs __rmqueue_pcplist()	2024-08-03 09:00:45 +02:00
net	wifi: mac80211: chanctx emulation set CHANGE_CHANNEL when in_reconfig	2024-08-03 09:00:32 +02:00
rust	rust: avoid unused import warning in `rusttest`	2024-06-11 23:33:28 +02:00
samples	tracing/treewide: Remove second parameter of __assign_str()	2024-05-22 20:14:47 -04:00
scripts	x86/syscall: Mark exit[_group] syscall handlers __noreturn	2024-08-03 08:59:12 +02:00
security	task_work: s/task_work_cancel()/task_work_cancel_func()/	2024-08-03 09:00:36 +02:00
sound	ASoC: fsl: fsl_qmc_audio: Check devm_kasprintf() returned value	2024-08-03 09:00:46 +02:00
tools	tools/memory-model: Fix bug in lock.cat	2024-08-03 09:00:43 +02:00
usr
virt	KVM fixes for 6.10	2024-06-21 08:03:55 -04:00
.clang-format
.cocciconfig
.editorconfig	.editorconfig: remove trim_trailing_whitespace option	2024-06-13 16:47:52 +02:00
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap	MAINTAINERS: mailmap: update Lorenzo Stoakes's email address	2024-07-06 11:39:51 -07:00
.rustfmt.toml
COPYING
CREDITS	pci-v6.10-fixes-2	2024-07-05 12:33:00 -07:00
Kbuild
Kconfig
MAINTAINERS	Fixes for the I2C testunit, the Renesas R-Car driver and some	2024-07-13 16:34:22 -07:00
Makefile	Linux 6.10.2	2024-07-27 11:40:36 +02:00
README

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 reStructuredText 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.