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| Filename | Latest commit message | Latest commit date |
|---|---|---|
3230f4a8d4
The following warning can happen when a memory shortage
occurs during txreq allocation:
[10220.939246] SLUB: Unable to allocate memory on node -1, gfp=0xa20(GFP_ATOMIC)
[10220.939246] Hardware name: Intel Corporation S2600WT2R/S2600WT2R, BIOS SE5C610.86B.01.01.0018.C4.072020161249 07/20/2016
[10220.939247] cache: mnt_cache, object size: 384, buffer size: 384, default order: 2, min order: 0
[10220.939260] Workqueue: hfi0_0 _hfi1_do_send [hfi1]
[10220.939261] node 0: slabs: 1026568, objs: 43115856, free: 0
[10220.939262] Call Trace:
[10220.939262] node 1: slabs: 820872, objs: 34476624, free: 0
[10220.939263] dump_stack+0x5a/0x73
[10220.939265] warn_alloc+0x103/0x190
[10220.939267] ? wake_all_kswapds+0x54/0x8b
[10220.939268] __alloc_pages_slowpath+0x86c/0xa2e
[10220.939270] ? __alloc_pages_nodemask+0x2fe/0x320
[10220.939271] __alloc_pages_nodemask+0x2fe/0x320
[10220.939273] new_slab+0x475/0x550
[10220.939275] ___slab_alloc+0x36c/0x520
[10220.939287] ? hfi1_make_rc_req+0x90/0x18b0 [hfi1]
[10220.939299] ? __get_txreq+0x54/0x160 [hfi1]
[10220.939310] ? hfi1_make_rc_req+0x90/0x18b0 [hfi1]
[10220.939312] __slab_alloc+0x40/0x61
[10220.939323] ? hfi1_make_rc_req+0x90/0x18b0 [hfi1]
[10220.939325] kmem_cache_alloc+0x181/0x1b0
[10220.939336] hfi1_make_rc_req+0x90/0x18b0 [hfi1]
[10220.939348] ? hfi1_verbs_send_dma+0x386/0xa10 [hfi1]
[10220.939359] ? find_prev_entry+0xb0/0xb0 [hfi1]
[10220.939371] hfi1_do_send+0x1d9/0x3f0 [hfi1]
[10220.939372] process_one_work+0x171/0x380
[10220.939374] worker_thread+0x49/0x3f0
[10220.939375] kthread+0xf8/0x130
[10220.939377] ? max_active_store+0x80/0x80
[10220.939378] ? kthread_bind+0x10/0x10
[10220.939379] ret_from_fork+0x35/0x40
[10220.939381] SLUB: Unable to allocate memory on node -1, gfp=0xa20(GFP_ATOMIC)
The shortage is handled properly so the message isn't needed. Silence by
adding the no warn option to the slab allocation.
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.