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Amit Kumar Mahapatra 539bd20352 mtd: spi-nor: sst: Fix SST write failure 'commit `18bcb4aa54` ("mtd: spi-nor: sst: Factor out common write operation to `sst_nor_write_data()`")' introduced a bug where only one byte of data is written, regardless of the number of bytes passed to sst_nor_write_data(), causing a kernel crash during the write operation. Ensure the correct number of bytes are written as passed to sst_nor_write_data(). Call trace: [ 57.400180] ------------[ cut here ]------------ [ 57.404842] While writing 2 byte written 1 bytes [ 57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74 [ 57.418464] Modules linked in: [ 57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30 [ 57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT) [ 57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 57.444557] pc : sst_nor_write_data+0x6c/0x74 [ 57.448911] lr : sst_nor_write_data+0x6c/0x74 [ 57.453264] sp : ffff80008232bb40 [ 57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001 [ 57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000 [ 57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000 [ 57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006 [ 57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580 [ 57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4 [ 57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530 [ 57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001 [ 57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 [ 57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000 [ 57.527916] Call trace: [ 57.530354] sst_nor_write_data+0x6c/0x74 [ 57.534361] sst_nor_write+0xb4/0x18c [ 57.538019] mtd_write_oob_std+0x7c/0x88 [ 57.541941] mtd_write_oob+0x70/0xbc [ 57.545511] mtd_write+0x68/0xa8 [ 57.548733] mtdchar_write+0x10c/0x290 [ 57.552477] vfs_write+0xb4/0x3a8 [ 57.555791] ksys_write+0x74/0x10c [ 57.559189] __arm64_sys_write+0x1c/0x28 [ 57.563109] invoke_syscall+0x54/0x11c [ 57.566856] el0_svc_common.constprop.0+0xc0/0xe0 [ 57.571557] do_el0_svc+0x1c/0x28 [ 57.574868] el0_svc+0x30/0xcc [ 57.577921] el0t_64_sync_handler+0x120/0x12c [ 57.582276] el0t_64_sync+0x190/0x194 [ 57.585933] ---[ end trace 0000000000000000 ]--- Cc: stable@vger.kernel.org Fixes: `18bcb4aa54` ("mtd: spi-nor: sst: Factor out common write operation to `sst_nor_write_data()`") Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> Reviewed-by: Pratyush Yadav <pratyush@kernel.org> Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org> Reviewed-by: Bence Csókás <csokas.bence@prolan.hu> [pratyush@kernel.org: add Cc stable tag] Signed-off-by: Pratyush Yadav <pratyush@kernel.org> Link: https://lore.kernel.org/r/20250213054546.2078121-1-amit.kumar-mahapatra@amd.com		2025-02-17 14:07:09 +00:00
arch	sh updates for v6.14	2025-02-02 10:40:27 -08:00
block	block-6.14-20250131	2025-01-31 11:49:30 -08:00
certs	sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3	2024-09-20 19:52:48 +03:00
crypto	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
Documentation	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -08:00
drivers	mtd: spi-nor: sst: Fix SST write failure	2025-02-17 14:07:09 +00:00
fs	assorted stuff for this merge window	2025-02-01 15:07:56 -08:00
include	assorted stuff for this merge window	2025-02-01 15:07:56 -08:00
init	Kbuild updates for v6.14	2025-01-31 12:07:07 -08:00
io_uring	io_uring-6.14-20250131	2025-01-31 11:29:23 -08:00
ipc	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
kernel	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -08:00
lib	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -08:00
LICENSES	LICENSES: add 0BSD license text	2024-09-01 20:43:24 -07:00
mm	assorted stuff for this merge window	2025-02-01 15:07:56 -08:00
net	assorted stuff for this merge window	2025-02-01 15:07:56 -08:00
rust	Kbuild updates for v6.14	2025-01-31 12:07:07 -08:00
samples	AT_EXECVE_CHECK update for v6.14-rc1 (fix1)	2025-01-31 17:12:31 -08:00
scripts	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -08:00
security	treewide: const qualify ctl_tables where applicable	2025-01-28 13:48:37 +01:00
sound	sound fixes for 6.14-rc1	2025-01-31 09:17:02 -08:00
tools	Turbostat 2025.02.02 updates since 2024.11.30	2025-02-02 10:49:13 -08:00
usr	kbuild: Drop support for include/asm-<arch> in headers_check.pl	2024-12-21 11:43:17 +09:00
virt	Merge branch 'kvm-mirror-page-tables' into HEAD	2025-01-20 07:15:58 -05:00
.clang-format	clang-format: Update with v6.11-rc1's `for_each` macro list	2024-08-02 13:20:31 +02:00
.clippy.toml	rust: give Clippy the minimum supported Rust version	2025-01-10 00:17:25 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.editorconfig	.editorconfig: remove trim_trailing_whitespace option	2024-06-13 16:47:52 +02:00
.get_maintainer.ignore	MAINTAINERS: Retire Ralf Baechle	2024-11-12 15:48:59 +01:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	rust: use host dylib naming convention to support macOS	2025-01-10 01:01:24 +01:00
.mailmap	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -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	Mainly individually changelogged singleton patches. The patch series in	2025-01-26 17:50:53 -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	21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.	2025-02-01 09:49:20 -08:00
Makefile	Linux 6.14-rc1	2025-02-02 15:39:26 -08:00
README	README: Fix spelling	2024-03-18 03:36:32 -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 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.