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Shin'ichiro Kawasaki 8ac713d2e9 scsi: mpi3mr: Use number of bits to manage bitmap sizes [ Upstream commit `339e61565f` ] To allocate bitmaps, the mpi3mr driver calculates sizes of bitmaps using byte as unit. However, bitmap helper functions assume that bitmaps are allocated using unsigned long as unit. This gap causes memory access beyond the bitmap sizes and results in "BUG: KASAN: slab-out-of-bounds". The BUG was observed at firmware download to eHBA-9600. Call trace indicated that the out-of-bounds access happened in find_first_zero_bit() called from mpi3mr_send_event_ack() for miroc->evtack_cmds_bitmap. To fix the BUG, do not use bytes to manage bitmap sizes. Instead, use number of bits, and call bitmap helper functions which take number of bits as arguments. For memory allocation, call bitmap_zalloc() instead of kzalloc() and krealloc(). For memory free, call bitmap_free() instead of kfree(). For zero clear, call bitmap_clear() instead of memset(). Remove three fields for bitmap byte sizes in struct scmd_priv which are no longer required. Replace the field dev_handle_bitmap_sz with dev_handle_bitmap_bits to keep number of bits of removepend_bitmap across resize. Link: https://lore.kernel.org/r/20230214005019.1897251-4-shinichiro.kawasaki@wdc.com Fixes: `c5758fc72b` ("scsi: mpi3mr: Gracefully handle online FW update operation") Fixes: `e844adb1fb` ("scsi: mpi3mr: Implement SCSI error handler hooks") Fixes: `c1af985d27` ("scsi: mpi3mr: Add Event acknowledgment logic") Fixes: `824a156633` ("scsi: mpi3mr: Base driver code") Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Acked-by: Sathya Prakash Veerichetty <sathya.prakash@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2023-03-11 13:50:35 +01:00
arch	ARM: dts: spear320-hmi: correct STMPE GPIO compatible	2023-03-11 13:50:34 +01:00
block	Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"	2023-03-11 11:04:54 +01:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-01-31 17:53:01 +09:00
crypto	crypto: rsa-pkcs1pad - Use akcipher_request_complete	2023-03-10 09:28:18 +01:00
Documentation	mm: memcontrol: deprecate charge moving	2023-03-10 09:29:49 +01:00
drivers	scsi: mpi3mr: Use number of bits to manage bitmap sizes	2023-03-11 13:50:35 +01:00
fs	ext4: fix incorrect options show of original mount_opt and extend mount_opt2	2023-03-11 13:50:33 +01:00
include	net: dsa: seville: ignore mscc-miim read errors from Lynx PCS	2023-03-11 13:50:33 +01:00
init	Kbuild fixes for v6.2 (3rd)	2023-01-21 10:56:37 -08:00
io_uring	io_uring: mark task TASK_RUNNING before handling resume/task work	2023-03-10 09:29:28 +01:00
ipc	Non-MM patches for 6.2-rc1.	2022-12-12 17:28:58 -08:00
kernel	genirq/ipi: Fix NULL pointer deref in irq_data_get_affinity_mask()	2023-03-11 13:50:35 +01:00
lib	cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG	2023-03-10 09:29:06 +01:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	memory tier: release the new_memtier in find_create_memory_tier()	2023-03-10 09:29:50 +01:00
net	tcp: tcp_check_req() can be called from process context	2023-03-11 13:50:34 +01:00
rust	rust: print: avoid evaluating arguments in `pr_*` macros in `unsafe` blocks	2023-01-16 00:54:35 +01:00
samples	ftrace: Export ftrace_free_filter() to modules	2023-01-24 11:20:58 -05:00
scripts	gcc-plugins: drop -std=gnu++11 to fix GCC 13 build	2023-03-10 09:29:11 +01:00
security	ima: Align ima_file_mmap() parameters with mmap_file LSM hook	2023-03-10 09:29:36 +01:00
sound	ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC	2023-03-10 09:29:41 +01:00
tools	netfilter: ip6t_rpfilter: Fix regression with VRF interfaces	2023-03-11 13:50:29 +01:00
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 09:29:33 +01:00
.clang-format	iommufd for 6.2	2022-12-14 09:15:43 -08:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.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	.gitignore: ignore *.rpm	2022-12-30 17:22:14 +09:00
.mailmap	12 hotfixes, mostly against mm/. Five of these fixes are cc:stable.	2023-02-13 14:09:20 -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: update SCTP maintainers	2023-02-02 11:35:33 -08:00
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 11:13:29 +01:00
Makefile	Linux 6.2.4	2023-03-11 11:04:54 +01:00
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.