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Filename Latest commit message Latest commit date
Ruozhu Li 555cee1bc4 nvme: fix regression when disconnect a recovering ctrl 
[ Upstream commit f7f70f4aa09dc43d7455c060143e86a017c30548 ]

We encountered a problem that the disconnect command hangs.
After analyzing the log and stack, we found that the triggering
process is as follows:
CPU0                          CPU1
                                nvme_rdma_error_recovery_work
                                  nvme_rdma_teardown_io_queues
nvme_do_delete_ctrl                 nvme_stop_queues
  nvme_remove_namespaces
  --clear ctrl->namespaces
                                    nvme_start_queues
                                    --no ns in ctrl->namespaces
    nvme_ns_remove                  return(because ctrl is deleting)
      blk_freeze_queue
        blk_mq_freeze_queue_wait
        --wait for ns to unquiesce to clean infligt IO, hang forever

This problem was not found in older kernels because we will flush
err work in nvme_stop_ctrl before nvme_remove_namespaces.It does not
seem to be modified for functional reasons, the patch can be revert
to solve the problem.

Revert commit 794a4cb3d2 ("nvme: remove the .stop_ctrl callout")

Signed-off-by: Ruozhu Li <liruozhu@huawei.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-07-21 20:59:25 +02:00
arch ARM: dts: sunxi: Fix SPI NOR campatible on Orange Pi Zero 2022-07-21 20:59:21 +02:00
block block: fix bio_clone_blkg_association() to associate with proper blkcg_gq 2022-06-14 18:11:50 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: drbg - make reseeding from get_random_bytes() synchronous 2022-06-22 14:11:18 +02:00
Documentation ipv4: Fix data-races around sysctl_ip_dynaddr. 2022-07-21 20:59:22 +02:00
drivers nvme: fix regression when disconnect a recovering ctrl 2022-07-21 20:59:25 +02:00
fs ext4: fix race condition between ext4_write and ext4_convert_inline_data 2022-07-21 20:59:18 +02:00
include raw: Fix a data-race around sysctl_raw_l3mdev_accept. 2022-07-21 20:59:22 +02:00
init random: handle latent entropy and command line from random_init() 2022-06-22 14:11:17 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-14 18:11:41 +02:00
kernel mm: sysctl: fix missing numa_stat when !CONFIG_HUGETLB_PAGE 2022-07-21 20:59:24 +02:00
lib ida: don't use BUG_ON() for debugging 2022-07-12 16:30:49 +02:00
LICENSES
mm mm/slub: add missing TID updates on slab deactivation 2022-07-12 16:30:46 +02:00
net net: tipc: fix possible refcount leak in tipc_sk_create() 2022-07-21 20:59:25 +02:00
samples
scripts modpost: fix section mismatch check for exported init/exit sections 2022-06-29 08:58:49 +02:00
security ima: Fix a potential integer overflow in ima_appraise_measurement 2022-07-21 20:59:19 +02:00
sound ASoC: sgtl5000: Fix noise on shutdown/remove 2022-07-21 20:59:19 +02:00
tools selftests: forwarding: fix error message in learning_test 2022-07-12 16:30:49 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
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Kbuild
Kconfig
MAINTAINERS MAINTAINERS: co-maintain random.c 2022-06-22 14:11:05 +02:00
Makefile Linux 5.4.206 2022-07-15 10:14:53 +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 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.