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Krzysztof Czurylo 81f44409fb RDMA/irdma: Fix data race in irdma_free_pble 
Protects pble_rsrc counters with mutex to prevent data race.
Fixes the following data race in irdma_free_pble reported by KCSAN:

BUG: KCSAN: data-race in irdma_free_pble [irdma] / irdma_free_pble [irdma]

write to 0xffff91430baa0078 of 8 bytes by task 16956 on cpu 5:
 irdma_free_pble+0x3b/0xb0 [irdma]
 irdma_dereg_mr+0x108/0x110 [irdma]
 ib_dereg_mr_user+0x74/0x160 [ib_core]
 uverbs_free_mr+0x26/0x30 [ib_uverbs]
 destroy_hw_idr_uobject+0x4a/0x90 [ib_uverbs]
 uverbs_destroy_uobject+0x7b/0x330 [ib_uverbs]
 uobj_destroy+0x61/0xb0 [ib_uverbs]
 ib_uverbs_run_method+0x1f2/0x380 [ib_uverbs]
 ib_uverbs_cmd_verbs+0x365/0x440 [ib_uverbs]
 ib_uverbs_ioctl+0x111/0x190 [ib_uverbs]
 __x64_sys_ioctl+0xc9/0x100
 do_syscall_64+0x44/0xa0
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8

read to 0xffff91430baa0078 of 8 bytes by task 16953 on cpu 2:
 irdma_free_pble+0x23/0xb0 [irdma]
 irdma_dereg_mr+0x108/0x110 [irdma]
 ib_dereg_mr_user+0x74/0x160 [ib_core]
 uverbs_free_mr+0x26/0x30 [ib_uverbs]
 destroy_hw_idr_uobject+0x4a/0x90 [ib_uverbs]
 uverbs_destroy_uobject+0x7b/0x330 [ib_uverbs]
 uobj_destroy+0x61/0xb0 [ib_uverbs]
 ib_uverbs_run_method+0x1f2/0x380 [ib_uverbs]
 ib_uverbs_cmd_verbs+0x365/0x440 [ib_uverbs]
 ib_uverbs_ioctl+0x111/0x190 [ib_uverbs]
 __x64_sys_ioctl+0xc9/0x100
 do_syscall_64+0x44/0xa0
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8

value changed: 0x0000000000005a62 -> 0x0000000000005a68

Fixes: e8c4dbc2fc ("RDMA/irdma: Add PBLE resource manager")
Signed-off-by: Krzysztof Czurylo <krzysztof.czurylo@intel.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Link: https://patch.msgid.link/20251125025350.180-3-tatyana.e.nikolova@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
History 2025-11-26 02:26:05 -05:00
arch Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
block block-6.18-20251009 2025-10-10 10:37:13 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This push contains the following changes: 2025-10-10 08:56:16 -07:00
Documentation RTC for 6.18 2025-10-11 11:56:47 -07:00
drivers RDMA/irdma: Fix data race in irdma_free_pble 2025-11-26 02:26:05 -05:00
fs - Avoid -Wflex-array-member-not-at-end warnings 2025-10-10 14:06:02 -07:00
include RDMA/core: Add new IB rate for XDR (8x) support 2025-11-24 02:58:30 -05:00
init printk changes for 6.18 2025-10-04 11:13:11 -07:00
io_uring io_uring/zcrx: increment fallback loop src offset 2025-10-08 07:26:14 -06:00
ipc namespace-6.18-rc1 2025-09-29 11:20:29 -07:00
kernel tracing fixes for v6.18: 2025-10-11 16:06:04 -07:00
lib lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt 2025-10-07 13:48:56 -07:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm slab hotfix for 6.18-rc1 2025-10-11 10:40:24 -07:00
net bpf-fixes 2025-10-11 10:31:38 -07:00
rust 7 hotfixes. All 7 are cc:stable and all 7 are for MM. 2025-10-11 10:14:55 -07:00
samples Char/Misc/IIO/Binder changes for 6.18-rc1 2025-10-04 16:26:32 -07:00
scripts Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
security integrity-v6.18 2025-10-05 10:48:33 -07:00
sound sound fixes for 6.18-rc1 2025-10-10 09:55:19 -07:00
tools - Remove a bunch of asm implementing condition flags testing in KVM's 2025-10-11 11:19:16 -07:00
usr gen_init_cpio: Ignore fsync() returning EINVAL on pipes 2025-10-07 09:53:05 -07:00
virt hyperv-next for v6.18 2025-10-07 08:40:15 -07:00
.clang-format memblock: drop for_each_free_mem_pfn_range_in_zone_from() 2025-09-14 08:49:03 +03:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.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: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore .gitignore: ignore compile_commands.json globally 2025-08-12 15:53:55 -07:00
.mailmap MAINTAINERS, .mailmap: update Umang's email address 2025-10-07 13:48:55 -07:00
.pylintrc tools: docs: parse-headers.py: move it from sphinx dir 2025-08-29 15:54:42 -06:00
.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 USB/Thunderbolt changes for 6.18-rc1 2025-10-04 16:07:08 -07:00
Kbuild sched: Make migrate_{en,dis}able() inline 2025-09-25 09:57:16 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS RDMA/bng_re: Add Auxiliary interface 2025-11-24 02:58:29 -05:00
Makefile Linux 6.18-rc1 2025-10-12 13:42:36 -07:00
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.