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Mustafa Ismail b3bd44bf20 RDMA/irdma: Cap MSIX used to online CPUs + 1 
[ Upstream commit 9cd9842c46 ]

The irdma driver can use a maximum number of msix vectors equal
to num_online_cpus() + 1 and the kernel warning stack below is shown
if that number is exceeded.

The kernel throws a warning as the driver tries to update the affinity
hint with a CPU mask greater than the max CPU IDs. Fix this by capping
the MSIX vectors to num_online_cpus() + 1.

 WARNING: CPU: 7 PID: 23655 at include/linux/cpumask.h:106 irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma]
 RIP: 0010:irdma_cfg_ceq_vector+0x34c/0x3f0 [irdma]
 Call Trace:
 irdma_rt_init_hw+0xa62/0x1290 [irdma]
 ? irdma_alloc_local_mac_entry+0x1a0/0x1a0 [irdma]
 ? __is_kernel_percpu_address+0x63/0x310
 ? rcu_read_lock_held_common+0xe/0xb0
 ? irdma_lan_unregister_qset+0x280/0x280 [irdma]
 ? irdma_request_reset+0x80/0x80 [irdma]
 ? ice_get_qos_params+0x84/0x390 [ice]
 irdma_probe+0xa40/0xfc0 [irdma]
 ? rcu_read_lock_bh_held+0xd0/0xd0
 ? irdma_remove+0x140/0x140 [irdma]
 ? rcu_read_lock_sched_held+0x62/0xe0
 ? down_write+0x187/0x3d0
 ? auxiliary_match_id+0xf0/0x1a0
 ? irdma_remove+0x140/0x140 [irdma]
 auxiliary_bus_probe+0xa6/0x100
 __driver_probe_device+0x4a4/0xd50
 ? __device_attach_driver+0x2c0/0x2c0
 driver_probe_device+0x4a/0x110
 __driver_attach+0x1aa/0x350
 bus_for_each_dev+0x11d/0x1b0
 ? subsys_dev_iter_init+0xe0/0xe0
 bus_add_driver+0x3b1/0x610
 driver_register+0x18e/0x410
 ? 0xffffffffc0b88000
 irdma_init_module+0x50/0xaa [irdma]
 do_one_initcall+0x103/0x5f0
 ? perf_trace_initcall_level+0x420/0x420
 ? do_init_module+0x4e/0x700
 ? __kasan_kmalloc+0x7d/0xa0
 ? kmem_cache_alloc_trace+0x188/0x2b0
 ? kasan_unpoison+0x21/0x50
 do_init_module+0x1d1/0x700
 load_module+0x3867/0x5260
 ? layout_and_allocate+0x3990/0x3990
 ? rcu_read_lock_held_common+0xe/0xb0
 ? rcu_read_lock_sched_held+0x62/0xe0
 ? rcu_read_lock_bh_held+0xd0/0xd0
 ? __vmalloc_node_range+0x46b/0x890
 ? lock_release+0x5c8/0xba0
 ? alloc_vm_area+0x120/0x120
 ? selinux_kernel_module_from_file+0x2a5/0x300
 ? __inode_security_revalidate+0xf0/0xf0
 ? __do_sys_init_module+0x1db/0x260
 __do_sys_init_module+0x1db/0x260
 ? load_module+0x5260/0x5260
 ? do_syscall_64+0x22/0x450
 do_syscall_64+0xa5/0x450
 entry_SYSCALL_64_after_hwframe+0x66/0xdb

Fixes: 44d9e52977 ("RDMA/irdma: Implement device initialization definitions")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Sindhu Devale <sindhu.devale@intel.com>
Link: https://lore.kernel.org/r/20230207201938.1329-1-sindhu.devale@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2023-03-10 09:33:36 +01:00
Documentation ASoC: dt-bindings: meson: fix gx-card codec node regex 2023-03-10 09:33:19 +01:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
arch alpha/boot/tools/objstrip: fix the check for ELF header 2023-03-10 09:33:30 +01:00
block block: use proper return value from bio_failfast() 2023-03-10 09:32:47 +01:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-02-09 11:28:11 +01:00
crypto crypto: rsa-pkcs1pad - Use akcipher_request_complete 2023-03-10 09:33:03 +01:00
drivers RDMA/irdma: Cap MSIX used to online CPUs + 1 2023-03-10 09:33:36 +01:00
fs gfs2: jdata writepage fix 2023-03-10 09:33:25 +01:00
include drivers: base: transport_class: fix possible memory leak 2023-03-10 09:33:34 +01:00
init gcc: disable -Warray-bounds for gcc-11 too 2023-01-14 10:33:43 +01:00
io_uring use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
ipc ipc: fix memory leak in init_mqueue_fs() 2022-12-31 13:32:01 +01:00
kernel bpf: Fix global subprog context argument resolution logic 2023-03-10 09:33:06 +01:00
lib kobject: Fix slab-out-of-bounds in fill_kobj_path() 2023-03-10 09:33:30 +01:00
mm mm/gup: add folio to list when folio_isolate_lru() succeed 2023-02-22 12:59:54 +01:00
net NFS: fix disabling of swap 2023-03-10 09:33:22 +01:00
rust rust: print: avoid evaluating arguments in `pr_*` macros in `unsafe` blocks 2023-02-06 08:06:34 +01:00
samples ftrace: Export ftrace_free_filter() to modules 2023-02-01 08:34:37 +01:00
scripts scripts/tags.sh: fix incompatibility with PCRE2 2023-03-03 11:52:25 +01:00
security randstruct: disable Clang 15 support 2023-02-25 11:25:43 +01:00
sound ALSA: hda/hdmi: Register with vga_switcheroo on Dual GPU Macbooks 2023-03-10 09:33:23 +01:00
tools objtool: add UACCESS exceptions for __tsan_volatile_read/write 2023-03-10 09:33:28 +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/vfio: Fix potential deadlock on vfio group_lock 2023-02-01 08:34:36 +01:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig
…
.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 Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -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: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
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 11:25:42 +01:00
Makefile Linux 6.1.15 2023-03-03 11:52:25 +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.