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14dc7a18ab
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Bart Van Assche 14dc7a18ab block: Fix handling of offline queues in blk_mq_alloc_request_hctx() 
This patch prevents that test nvme/004 triggers the following:

UBSAN: array-index-out-of-bounds in block/blk-mq.h:135:9
index 512 is out of range for type 'long unsigned int [512]'
Call Trace:
 show_stack+0x52/0x58
 dump_stack_lvl+0x49/0x5e
 dump_stack+0x10/0x12
 ubsan_epilogue+0x9/0x3b
 __ubsan_handle_out_of_bounds.cold+0x44/0x49
 blk_mq_alloc_request_hctx+0x304/0x310
 __nvme_submit_sync_cmd+0x70/0x200 [nvme_core]
 nvmf_connect_io_queue+0x23e/0x2a0 [nvme_fabrics]
 nvme_loop_connect_io_queues+0x8d/0xb0 [nvme_loop]
 nvme_loop_create_ctrl+0x58e/0x7d0 [nvme_loop]
 nvmf_create_ctrl+0x1d7/0x4d0 [nvme_fabrics]
 nvmf_dev_write+0xae/0x111 [nvme_fabrics]
 vfs_write+0x144/0x560
 ksys_write+0xb7/0x140
 __x64_sys_write+0x42/0x50
 do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Fixes: 20e4d81393 ("blk-mq: simplify queue mapping & schedule with each possisble CPU")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220615210004.1031820-1-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-06-16 14:43:31 -06:00
arch virtio,vdpa: fixes 2022-06-11 16:32:47 -07:00
block block: Fix handling of offline queues in blk_mq_alloc_request_hctx() 2022-06-16 14:43:31 -06:00
certs certs: Convert spaces in certs/Makefile to a tab 2022-06-10 11:42:02 -07:00
crypto This update includes the following changes: 2022-05-27 18:06:49 -07:00
Documentation Kbuild fixes for v5.19 2022-06-12 11:10:07 -07:00
drivers md/raid5-ppl: Fix argument order in bio_alloc_bioset() 2022-06-15 10:32:48 -07:00
fs 3 smb3 reconnect fixes 2022-06-12 11:05:44 -07:00
include Workqueue fixes for v5.19-rc1 2022-06-12 11:16:00 -07:00
init gcc-12: disable '-Warray-bounds' universally for now 2022-06-09 10:11:12 -07:00
ipc These changes update the ipc sysctls so that they are fundamentally 2022-06-03 15:54:57 -07:00
kernel Workqueue fixes for v5.19-rc1 2022-06-12 11:16:00 -07:00
lib Random number generator fixes for Linux 5.19-rc2. 2022-06-12 10:33:38 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm/huge_memory: Fix xarray node memory leak 2022-06-09 16:24:25 -04:00
net Notable changes: 2022-06-10 17:28:43 -07:00
samples drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
scripts Kbuild fixes for v5.19 2022-06-12 11:10:07 -07:00
security KEYS: trusted: tpm2: Fix migratable logic 2022-06-08 14:12:13 +03:00
sound sound fixes for 5.19-rc2 2022-06-10 10:20:57 -07:00
tools Random number generator fixes for Linux 5.19-rc2. 2022-06-12 10:33:38 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt * Fix syzkaller NULL pointer dereference 2022-06-08 09:16:31 -07:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap Hot fixes for 5.19-rc1. 2022-06-05 17:05:38 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Notable changes: 2022-06-10 17:28:43 -07:00
Makefile Linux 5.19-rc2 2022-06-12 16:11:37 -07:00
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.