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Sindhu Devale 1594dac8b1 i40e: Do not use WQ_MEM_RECLAIM flag for workqueue [ Upstream commit `2cc7d15055` ] Issue reported by customer during SRIOV testing, call trace: When both i40e and the i40iw driver are loaded, a warning in check_flush_dependency is being triggered. This seems to be because of the i40e driver workqueue is allocated with the WQ_MEM_RECLAIM flag, and the i40iw one is not. Similar error was encountered on ice too and it was fixed by removing the flag. Do the same for i40e too. [Feb 9 09:08] ------------[ cut here ]------------ [ +0.000004] workqueue: WQ_MEM_RECLAIM i40e:i40e_service_task [i40e] is flushing !WQ_MEM_RECLAIM infiniband:0x0 [ +0.000060] WARNING: CPU: 0 PID: 937 at kernel/workqueue.c:2966 check_flush_dependency+0x10b/0x120 [ +0.000007] Modules linked in: snd_seq_dummy snd_hrtimer snd_seq snd_timer snd_seq_device snd soundcore nls_utf8 cifs cifs_arc4 nls_ucs2_utils rdma_cm iw_cm ib_cm cifs_md4 dns_resolver netfs qrtr rfkill sunrpc vfat fat intel_rapl_msr intel_rapl_common irdma intel_uncore_frequency intel_uncore_frequency_common ice ipmi_ssif isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp gnss coretemp ib_uverbs rapl intel_cstate ib_core iTCO_wdt iTCO_vendor_support acpi_ipmi mei_me ipmi_si intel_uncore ioatdma i2c_i801 joydev pcspkr mei ipmi_devintf lpc_ich intel_pch_thermal i2c_smbus ipmi_msghandler acpi_power_meter acpi_pad xfs libcrc32c ast sd_mod drm_shmem_helper t10_pi drm_kms_helper sg ixgbe drm i40e ahci crct10dif_pclmul libahci crc32_pclmul igb crc32c_intel libata ghash_clmulni_intel i2c_algo_bit mdio dca wmi dm_mirror dm_region_hash dm_log dm_mod fuse [ +0.000050] CPU: 0 PID: 937 Comm: kworker/0:3 Kdump: loaded Not tainted 6.8.0-rc2-Feb-net_dev-Qiueue-00279-gbd43c5687e05 #1 [ +0.000003] Hardware name: Intel Corporation S2600BPB/S2600BPB, BIOS SE5C620.86B.02.01.0013.121520200651 12/15/2020 [ +0.000001] Workqueue: i40e i40e_service_task [i40e] [ +0.000024] RIP: 0010:check_flush_dependency+0x10b/0x120 [ +0.000003] Code: ff 49 8b 54 24 18 48 8d 8b b0 00 00 00 49 89 e8 48 81 c6 b0 00 00 00 48 c7 c7 b0 97 fa 9f c6 05 8a cc 1f 02 01 e8 35 b3 fd ff <0f> 0b e9 10 ff ff ff 80 3d 78 cc 1f 02 00 75 94 e9 46 ff ff ff 90 [ +0.000002] RSP: 0018:ffffbd294976bcf8 EFLAGS: 00010282 [ +0.000002] RAX: 0000000000000000 RBX: ffff94d4c483c000 RCX: 0000000000000027 [ +0.000001] RDX: ffff94d47f620bc8 RSI: 0000000000000001 RDI: ffff94d47f620bc0 [ +0.000001] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000ffff7fff [ +0.000001] R10: ffffbd294976bb98 R11: ffffffffa0be65e8 R12: ffff94c5451ea180 [ +0.000001] R13: ffff94c5ab5e8000 R14: ffff94c5c20b6e05 R15: ffff94c5f1330ab0 [ +0.000001] FS: 0000000000000000(0000) GS:ffff94d47f600000(0000) knlGS:0000000000000000 [ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000001] CR2: 00007f9e6f1fca70 CR3: 0000000038e20004 CR4: 00000000007706f0 [ +0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ +0.000001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ +0.000001] PKRU: 55555554 [ +0.000001] Call Trace: [ +0.000001] <TASK> [ +0.000002] ? __warn+0x80/0x130 [ +0.000003] ? check_flush_dependency+0x10b/0x120 [ +0.000002] ? report_bug+0x195/0x1a0 [ +0.000005] ? handle_bug+0x3c/0x70 [ +0.000003] ? exc_invalid_op+0x14/0x70 [ +0.000002] ? asm_exc_invalid_op+0x16/0x20 [ +0.000006] ? check_flush_dependency+0x10b/0x120 [ +0.000002] ? check_flush_dependency+0x10b/0x120 [ +0.000002] __flush_workqueue+0x126/0x3f0 [ +0.000015] ib_cache_cleanup_one+0x1c/0xe0 [ib_core] [ +0.000056] __ib_unregister_device+0x6a/0xb0 [ib_core] [ +0.000023] ib_unregister_device_and_put+0x34/0x50 [ib_core] [ +0.000020] i40iw_close+0x4b/0x90 [irdma] [ +0.000022] i40e_notify_client_of_netdev_close+0x54/0xc0 [i40e] [ +0.000035] i40e_service_task+0x126/0x190 [i40e] [ +0.000024] process_one_work+0x174/0x340 [ +0.000003] worker_thread+0x27e/0x390 [ +0.000001] ? __pfx_worker_thread+0x10/0x10 [ +0.000002] kthread+0xdf/0x110 [ +0.000002] ? __pfx_kthread+0x10/0x10 [ +0.000002] ret_from_fork+0x2d/0x50 [ +0.000003] ? __pfx_kthread+0x10/0x10 [ +0.000001] ret_from_fork_asm+0x1b/0x30 [ +0.000004] </TASK> [ +0.000001] ---[ end trace 0000000000000000 ]--- Fixes: `4d5957cbde` ("i40e: remove WQ_UNBOUND and the task limit of our workqueue") Signed-off-by: Sindhu Devale <sindhu.devale@intel.com> Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com> Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com> Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Tested-by: Robert Ganzynkowicz <robert.ganzynkowicz@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20240423182723.740401-2-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-05-02 16:35:22 +02:00
arch	ARM: dts: imx6ull-tarragon: fix USB over-current polarity	2024-05-02 16:35:21 +02:00
block	block: fix module reference leakage from bdev_open_by_dev error path	2024-05-02 16:35:13 +02:00
certs	This update includes the following changes:	2023-11-02 16:15:30 -10:00
crypto	Revert "crypto: pkcs7 - remove sha1 support"	2024-04-03 15:32:31 +02:00
Documentation	net: make SK_MEMORY_PCPU_RESERV tunable	2024-05-02 16:35:17 +02:00
drivers	i40e: Do not use WQ_MEM_RECLAIM flag for workqueue	2024-05-02 16:35:22 +02:00
fs	netfs: Fix writethrough-mode error handling	2024-05-02 16:35:16 +02:00
include	Bluetooth: hci_event: Fix sending HCI_OP_READ_ENC_KEY_SIZE	2024-05-02 16:35:19 +02:00
init	init/main.c: Fix potential static_command_line memory overflow	2024-04-27 17:13:02 +02:00
io_uring	io_uring: Fix io_cqring_wait() not restoring sigmask on get_timespec64() failure	2024-04-27 17:12:47 +02:00
ipc	shm: Slim down dependencies	2023-12-20 19:26:31 -05:00
kernel	fork: defer linking file vma until vma is fully initialized	2024-04-27 17:13:04 +02:00
lib	bootconfig: use memblock_free_late to free xbc memory to buddy	2024-04-27 17:13:03 +02:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	mm/shmem: inline shmem_is_huge() for disabled transparent hugepages	2024-04-27 17:13:02 +02:00
net	netfilter: nf_tables: honor table dormant flag from netdev release event path	2024-05-02 16:35:21 +02:00
rust	Rust changes for v6.8	2024-01-11 13:05:41 -08:00
samples	work around gcc bugs with 'asm goto' with outputs	2024-02-09 15:57:48 -08:00
scripts	gcc-plugins/stackleak: Avoid .head.text section	2024-04-13 13:10:11 +02:00
security	selinux: avoid dereference of garbage after mount failure	2024-04-10 16:38:01 +02:00
sound	ALSA: hda/realtek - Enable audio jacks of Haier Boyue G42 with ALC269VC	2024-04-27 17:12:57 +02:00
tools	tools: ynl: don't ignore errors in NLMSG_DONE messages	2024-05-02 16:35:17 +02:00
usr	Kbuild updates for v6.8	2024-01-18 17:57:07 -08:00
virt	KVM: Always flush async #PF workqueue when vCPU is being destroyed	2024-04-03 15:32:03 +02:00
.clang-format	clang-format: Update with v6.7-rc4's `for_each` macro list	2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig	Add .editorconfig file for basic formatting	2023-12-28 16:22:47 +09:00
.get_maintainer.ignore
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	Add .editorconfig file for basic formatting	2023-12-28 16:22:47 +09:00
.mailmap	drm fixes for 6.8 final	2024-03-08 12:44:56 -08:00
.rustfmt.toml
COPYING
CREDITS	MAINTAINERS: supplement of zswap maintainers update	2024-01-25 23:52:21 -08:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig
MAINTAINERS	drm fixes for 6.8 final	2024-03-08 12:44:56 -08:00
Makefile	Linux 6.8.8	2024-04-27 17:13:05 +02:00
README

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.