From: John Hubbard <jhubbard@nvidia.com>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
<imbrenda@linux.ibm.com>, <jack@suse.cz>, <jglisse@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, <corbet@lwn.net>,
<dan.j.williams@intel.com>, <david@fromorbit.com>,
<hch@infradead.org>, <ira.weiny@intel.com>, <jgg@ziepe.ca>,
<kirill.shutemov@linux.intel.com>, <linux-mm@kvack.org>,
<mhocko@suse.com>, <mike.kravetz@oracle.com>, <shuah@kernel.org>,
<torvalds@linux-foundation.org>, <vbabka@suse.cz>,
<viro@zeniv.linux.org.uk>, <willy@infradead.org>
Subject: Re: [patch 043/155] mm/gup: track FOLL_PIN pages
Date: Wed, 8 Apr 2020 23:38:10 -0700 [thread overview]
Message-ID: <2d45b8b7-ecbc-298f-5124-cb635dd3928a@nvidia.com> (raw)
In-Reply-To: <acb17a53-d6fa-170f-b69a-ea2c525b5e6a@I-love.SAKURA.ne.jp>
On 4/8/20 11:08 PM, Tetsuo Handa wrote:
> Hello.
>
> I'm hitting WARN_ON() at try_get_page() from try_grab_page() due to page_ref_count(page) == -1021
> (which is "3 - GUP_PIN_COUNTING_BIAS") if I use loadable kernel module version of TOMOYO security
> module. Since I don't see recent changes in security/tomoyo regarding get_user_pages_remote(),
> I'm wondering what is happening.
Hi Tetsuo,
Yes, commit 3faa52c03f440d1b ("mm/gup: track FOLL_PIN pages") is the one that turns everything on,
so if any problems with the whole FOLL_PIN scheme are to be found, it's natural that git bisect
would point to that commit.
Thanks for all the details here. One of the first questions I normally have is: is anything in the
system even using FOLL_PIN? And the way to answer that is to monitor the two new *foll_pin* entries
in /proc/vmstat, approximately like this:
$ cat /proc/vmstat |grep foll_pin
nr_foll_pin_acquired 0
nr_foll_pin_released 0
If you could do that before, during and after (ideally...or whatever you can get) the problem, I'd
love to see that data.
Also, if you happen to know if anything is calling pin_user_page*() and/or unpin_user_page*(), that
is extra credit. :)
I don't see anything here that jumps out at me, yet. The call stack below is as expected, and the WARN
often picks up problems that happened in some other calling path (something else leaked a FOLL_PIN
page for example, etc).
quick question below:
>
> [ 10.427414][ T1] ------------[ cut here ]------------
> [ 10.427425][ T1] WARNING: CPU: 3 PID: 1 at ./include/linux/mm.h:1009 try_grab_page+0x77/0x80
> [ 10.427426][ T1] Modules linked in: caitsith(O) akari(O) xfs libcrc32c crc32c_generic sd_mod ata_generic pata_acpi mptspi scsi_transport_spi vmwgfx mptscsih drm_kms_helper mptbase cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea fb ahci fbdev libahci ttm ata_piix nvme drm drm_panel_orientation_quirks libata nvme_core t10_pi agpgart e1000 i2c_core scsi_mod serio_raw atkbd libps2 i8042 serio unix
> [ 10.427451][ T1] CPU: 3 PID: 1 Comm: akari-init Tainted: G O 5.6.0-05654-g3faa52c03f44 #984
> [ 10.427452][ T1] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/29/2019
> [ 10.427454][ T1] RIP: 0010:try_grab_page+0x77/0x80
> [ 10.427456][ T1] Code: 34 85 c0 7e 25 f0 ff 47 34 b8 01 00 00 00 5d c3 0f 0b eb b1 48 8d 78 ff eb c6 0f 0b 31 c0 5d 0f 1f 40 00 c3 48 8d 78 ff eb d4 <0f> 0b 31 c0 5d c3 0f 1f 00 55 48 89 e5 41 57 49 89 cf 41 56 49 89
> [ 10.427457][ T1] RSP: 0018:ffffa859c0013ac0 EFLAGS: 00010286
> [ 10.427459][ T1] RAX: 00000000fffffc03 RBX: ffffcb6208c71dc0 RCX: 8000000231c77067
> [ 10.427460][ T1] RDX: 8000000231c77067 RSI: 0000000000002016 RDI: ffffcb6208c71dc0
> [ 10.427461][ T1] RBP: ffffa859c0013ac0 R08: 0000000000000001 R09: 0000000000000000
> [ 10.427462][ T1] R10: 0000000000000001 R11: ffff95d91c615340 R12: 0000000000002016
> [ 10.427463][ T1] R13: ffff95d91c615328 R14: 0000000000000ff0 R15: ffff95d91e0c0ff0
> [ 10.427465][ T1] FS: 00007fbfc3772740(0000) GS:ffff95d927a00000(0000) knlGS:0000000000000000
> [ 10.427479][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 10.427483][ T1] CR2: 0000000000ac5190 CR3: 000000022090a002 CR4: 00000000003606e0
> [ 10.427491][ T1] Call Trace:
> [ 10.427494][ T1] follow_page_pte+0x329/0x443
> [ 10.427503][ T1] follow_p4d_mask+0x756/0x7c1
> [ 10.427511][ T1] follow_page_mask+0x6a/0x70
> [ 10.427516][ T1] __get_user_pages+0x110/0x880
> [ 10.427518][ T1] ? ___slab_alloc.constprop.95+0x929/0x980
> [ 10.427532][ T1] __get_user_pages_remote+0xce/0x230
> [ 10.427540][ T1] get_user_pages_remote+0x27/0x40
> [ 10.427545][ T1] ccs_dump_page+0x6a/0x140 [akari]
> [ 10.427552][ T1] ccs_start_execve+0x28c/0x490 [akari]
> [ 10.427555][ T1] ? ccs_start_execve+0x90/0x490 [akari]
> [ 10.427561][ T1] ? ccs_load_policy+0xee/0x150 [akari]
> [ 10.427568][ T1] ccs_bprm_check_security+0x4e/0x70 [akari]
...say, I can't find the ccs_*() routines in my tree, can you point me to them? Probably not
important but I'm curious now.
thanks,
--
John Hubbard
NVIDIA
> [ 10.427572][ T1] security_bprm_check+0x26/0x40
> [ 10.427576][ T1] search_binary_handler+0x22/0x1c0
> [ 10.427580][ T1] __do_execve_file.isra.41+0x723/0xac0
> [ 10.427581][ T1] ? __do_execve_file.isra.41+0x665/0xac0
> [ 10.427590][ T1] __x64_sys_execve+0x44/0x50
> [ 10.427614][ T1] do_syscall_64+0x4a/0x1e0
> [ 10.427618][ T1] entry_SYSCALL_64_after_hwframe+0x49/0xb3
> [ 10.427649][ T1] RIP: 0033:0x7fbfc2e36c37
> [ 10.427651][ T1] Code: ff ff 76 df 89 c6 f7 de 64 41 89 32 eb d5 89 c6 f7 de 64 41 89 32 eb db 66 2e 0f 1f 84 00 00 00 00 00 90 b8 3b 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 02 f3 c3 48 8b 15 08 12 30 00 f7 d8 64 89 02
> [ 10.427652][ T1] RSP: 002b:00007fff25f9c0f8 EFLAGS: 00000202 ORIG_RAX: 000000000000003b
> [ 10.427654][ T1] RAX: ffffffffffffffda RBX: 0000000000ac64f0 RCX: 00007fbfc2e36c37
> [ 10.427672][ T1] RDX: 0000000000ac6be0 RSI: 0000000000ac6ac0 RDI: 0000000000ac64f0
> [ 10.427673][ T1] RBP: 0000000000000000 R08: 00007fff25f9c0e0 R09: 0000000000000000
> [ 10.427674][ T1] R10: 00007fff25f9bb60 R11: 0000000000000202 R12: 0000000000ac6be0
> [ 10.427675][ T1] R13: 0000000000ac6ac0 R14: 0000000000ac6be0 R15: 0000000000ac6820
> [ 10.427701][ T1] irq event stamp: 10135190
> [ 10.427704][ T1] hardirqs last enabled at (10135189): [<ffffffffb223092a>] __slab_alloc.constprop.94+0x48/0x5e
> [ 10.427706][ T1] hardirqs last disabled at (10135190): [<ffffffffb2001eb7>] trace_hardirqs_off_thunk+0x1a/0x1c
> [ 10.427707][ T1] softirqs last enabled at (10135114): [<ffffffffb2a0032b>] __do_softirq+0x32b/0x455
> [ 10.427710][ T1] softirqs last disabled at (10135107): [<ffffffffb2072985>] irq_exit+0xa5/0xb0
> [ 10.427711][ T1] ---[ end trace 984e9bd0ce5a1e09 ]---
>
> +bool __must_check try_grab_page(struct page *page, unsigned int flags)
> +{
> + WARN_ON_ONCE((flags & (FOLL_GET | FOLL_PIN)) == (FOLL_GET | FOLL_PIN));
> +
> + if (flags & FOLL_GET)
> + return try_get_page(page);
> + else if (flags & FOLL_PIN) {
> + page = compound_head(page);
> +
> + if (WARN_ON_ONCE(page_ref_count(page) <= 0))
> + return false;
> +
> + page_ref_add(page, GUP_PIN_COUNTING_BIAS);
> + }
> +
> + return true;
> +}
>
> Bisection says 3faa52c03f440d1b ("mm/gup: track FOLL_PIN pages") is the bad commit.
>
> $ git bisect log
> # bad: [3faa52c03f440d1b9ddef18c4f189f4790d52d7e] mm/gup: track FOLL_PIN pages
> # good: [7111951b8d4973bda27ff663f2cf18b663d15b48] Linux 5.6
> # good: [d5226fa6dbae0569ee43ecfc08bdcd6770fc4755] Linux 5.5
> # good: [219d54332a09e8d8741c1e1982f5eae56099de85] Linux 5.4
> # good: [4d856f72c10ecb060868ed10ff1b1453943fc6c8] Linux 5.3
> # good: [0ecfebd2b52404ae0c54a878c872bb93363ada36] Linux 5.2
> # good: [e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd] Linux 5.1
> # good: [1c163f4c7b3f621efff9b28a47abb36f7378d783] Linux 5.0
> # good: [86dfbed49f88fd87ce8a12d2314b1f93266da7a7] mm/gup: pass a flags arg to __gup_device_* functions
> # good: [83daf837884cc44c3cc0e4f8a096c5d1461cbcc2] mm/filemap.c: unexport find_get_entry
> # good: [cc7b8f6245f0042a232c7f6807dc130d87233164] mm/page-writeback.c: write_cache_pages(): deduplicate identical checks
> # good: [29d9f30d4ce6c7a38745a54a8cddface10013490] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
> # good: [4afdb733b1606c6cb86e7833f9335f4870cf7ddd] io-uring: drop completion when removing file
> git bisect start '3faa52c03f440d1b9ddef18c4f189f4790d52d7e' 'v5.6' 'v5.5' 'v5.4' 'v5.3' 'v5.2' 'v5.1' 'v5.0' '86dfbed49f88fd87ce8a12d2314b1f93266da7a7' '83daf837884cc44c3cc0e4f8a096c5d1461cbcc2' 'cc7b8f6245f0042a232c7f6807dc130d87233164' '29d9f30d4ce6c7a38745a54a8cddface10013490' '4afdb733b1606c6cb86e7833f9335f4870cf7ddd'
> # good: [3b78d8347d31a050bb4f378a5f42cf495d873796] mm/gup: pass gup flags to two more routines
> git bisect good 3b78d8347d31a050bb4f378a5f42cf495d873796
> # good: [94202f126f698691f8865906ad6a68203e5dde8c] mm/gup: require FOLL_GET for get_user_pages_fast()
> git bisect good 94202f126f698691f8865906ad6a68203e5dde8c
> # first bad commit: [3faa52c03f440d1b9ddef18c4f189f4790d52d7e] mm/gup: track FOLL_PIN pages
>
>
next prev parent reply other threads:[~2020-04-09 6:38 UTC|newest]
Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 4:01 incoming Andrew Morton
2020-04-02 4:02 ` [patch 001/155] tools/accounting/getdelays.c: fix netlink attribute length Andrew Morton
2020-04-02 4:02 ` [patch 002/155] kthread: mark timer used by delayed kthread works as IRQ safe Andrew Morton
2020-04-02 4:03 ` [patch 003/155] asm-generic: make more kernel-space headers mandatory Andrew Morton
2020-04-02 4:03 ` [patch 004/155] scripts/spelling.txt: add syfs/sysfs pattern Andrew Morton
2020-04-02 4:03 ` [patch 005/155] scripts/spelling.txt: add more spellings to spelling.txt Andrew Morton
2020-04-02 4:03 ` [patch 006/155] ocfs2: remove FS_OCFS2_NM Andrew Morton
2020-04-02 4:03 ` [patch 007/155] ocfs2: remove unused macros Andrew Morton
2020-04-02 4:03 ` [patch 008/155] ocfs2: use OCFS2_SEC_BITS in macro Andrew Morton
2020-04-02 4:03 ` [patch 009/155] ocfs2: remove dlm_lock_is_remote Andrew Morton
2020-04-02 4:03 ` [patch 010/155] ocfs2: there is no need to log twice in several functions Andrew Morton
2020-04-02 4:03 ` [patch 011/155] ocfs2: correct annotation from "l_next_rec" to "l_next_free_rec" Andrew Morton
2020-04-02 4:03 ` [patch 012/155] ocfs2: remove useless err Andrew Morton
2020-04-02 4:03 ` [patch 013/155] ocfs2: add missing annotations for ocfs2_refcount_cache_lock() and ocfs2_refcount_cache_unlock() Andrew Morton
2020-04-02 4:03 ` [patch 014/155] ocfs2: replace zero-length array with flexible-array member Andrew Morton
2020-04-02 4:03 ` [patch 015/155] ocfs2: cluster: " Andrew Morton
2020-04-02 4:03 ` [patch 016/155] ocfs2: dlm: " Andrew Morton
2020-04-02 4:03 ` [patch 017/155] ocfs2: ocfs2_fs.h: " Andrew Morton
2020-04-02 4:04 ` [patch 018/155] ocfs2: roll back the reference count modification of the parent directory if an error occurs Andrew Morton
2020-04-02 4:04 ` [patch 019/155] ocfs2: use scnprintf() for avoiding potential buffer overflow Andrew Morton
2020-04-02 4:04 ` [patch 020/155] ocfs2: use memalloc_nofs_save instead of memalloc_noio_save Andrew Morton
2020-04-02 4:04 ` [patch 021/155] fs_parse: remove pr_notice() about each validation Andrew Morton
2020-04-02 4:04 ` [patch 022/155] mm/slub.c: replace cpu_slab->partial with wrapped APIs Andrew Morton
2020-04-02 4:04 ` [patch 023/155] mm/slub.c: replace kmem_cache->cpu_partial " Andrew Morton
2020-04-02 4:04 ` [patch 024/155] slub: improve bit diffusion for freelist ptr obfuscation Andrew Morton
2020-04-02 4:04 ` [patch 025/155] slub: relocate freelist pointer to middle of object Andrew Morton
2020-04-15 16:47 ` Marco Elver
2020-04-15 17:07 ` Kees Cook
2020-04-15 18:00 ` Kees Cook
2020-04-02 4:04 ` [patch 026/155] revert "topology: add support for node_to_mem_node() to determine the fallback node" Andrew Morton
2020-04-02 4:04 ` [patch 027/155] mm/kmemleak.c: use address-of operator on section symbols Andrew Morton
2020-04-02 4:04 ` [patch 028/155] mm/Makefile: disable KCSAN for kmemleak Andrew Morton
2020-04-02 4:04 ` [patch 029/155] mm/filemap.c: don't bother dropping mmap_sem for zero size readahead Andrew Morton
2020-04-02 4:04 ` [patch 030/155] mm/page-writeback.c: write_cache_pages(): deduplicate identical checks Andrew Morton
2020-04-02 4:04 ` [patch 031/155] mm/filemap.c: clear page error before actual read Andrew Morton
2020-04-02 4:04 ` [patch 032/155] mm/filemap.c: remove unused argument from shrink_readahead_size_eio() Andrew Morton
2020-04-02 4:04 ` [patch 033/155] mm/filemap.c: use vm_fault error code directly Andrew Morton
2020-04-02 4:04 ` [patch 034/155] include/linux/pagemap.h: rename arguments to find_subpage Andrew Morton
2020-04-02 4:05 ` [patch 035/155] mm/page-writeback.c: use VM_BUG_ON_PAGE in clear_page_dirty_for_io Andrew Morton
2020-04-02 4:05 ` [patch 036/155] mm/filemap.c: unexport find_get_entry Andrew Morton
2020-04-02 4:05 ` [patch 037/155] mm/filemap.c: rewrite pagecache_get_page documentation Andrew Morton
2020-04-02 4:05 ` [patch 038/155] mm/gup: split get_user_pages_remote() into two routines Andrew Morton
2020-04-02 4:05 ` [patch 039/155] mm/gup: pass a flags arg to __gup_device_* functions Andrew Morton
2020-04-02 4:05 ` [patch 040/155] mm: introduce page_ref_sub_return() Andrew Morton
2020-04-02 4:05 ` [patch 041/155] mm/gup: pass gup flags to two more routines Andrew Morton
2020-04-02 4:05 ` [patch 042/155] mm/gup: require FOLL_GET for get_user_pages_fast() Andrew Morton
2020-04-02 4:05 ` [patch 043/155] mm/gup: track FOLL_PIN pages Andrew Morton
2020-04-09 6:08 ` Tetsuo Handa
2020-04-09 6:38 ` John Hubbard [this message]
2020-04-09 7:20 ` Tetsuo Handa
2020-04-09 7:46 ` John Hubbard
2020-04-02 4:05 ` [patch 044/155] mm/gup: page->hpage_pinned_refcount: exact pin counts for huge pages Andrew Morton
2020-04-02 4:05 ` [patch 045/155] mm/gup: /proc/vmstat: pin_user_pages (FOLL_PIN) reporting Andrew Morton
2020-04-02 4:05 ` [patch 046/155] mm/gup_benchmark: support pin_user_pages() and related calls Andrew Morton
2020-04-02 4:05 ` [patch 047/155] selftests/vm: run_vmtests: invoke gup_benchmark with basic FOLL_PIN coverage Andrew Morton
2020-04-02 4:05 ` [patch 048/155] mm: improve dump_page() for compound pages Andrew Morton
2020-04-02 4:05 ` [patch 049/155] mm: dump_page(): additional diagnostics for huge pinned pages Andrew Morton
2020-04-02 4:05 ` [patch 050/155] mm/gup/writeback: add callbacks for inaccessible pages Andrew Morton
2020-04-02 4:06 ` [patch 051/155] mm/gup: rename nr as nr_pinned in get_user_pages_fast() Andrew Morton
2020-04-02 4:06 ` [patch 052/155] mm/gup: fix omission of check on FOLL_LONGTERM in gup fast path Andrew Morton
2020-04-02 4:06 ` [patch 053/155] mm/swapfile.c: fix comments for swapcache_prepare Andrew Morton
2020-04-02 4:06 ` [patch 054/155] mm/swap.c: not necessary to export __pagevec_lru_add() Andrew Morton
2020-04-02 4:06 ` [patch 055/155] mm/swapfile: fix data races in try_to_unuse() Andrew Morton
2020-04-02 4:06 ` [patch 056/155] mm/swap_slots.c: assign|reset cache slot by value directly Andrew Morton
2020-04-02 4:06 ` [patch 057/155] mm: swap: make page_evictable() inline Andrew Morton
2020-04-02 4:06 ` [patch 058/155] mm: swap: use smp_mb__after_atomic() to order LRU bit set Andrew Morton
2020-04-02 4:06 ` [patch 059/155] mm/swap_state.c: use the same way to count page in [add_to|delete_from]_swap_cache Andrew Morton
2020-04-02 4:06 ` [patch 060/155] mm, memcg: fix build error around the usage of kmem_caches Andrew Morton
2020-04-02 4:06 ` [patch 061/155] mm/memcontrol.c: allocate shrinker_map on appropriate NUMA node Andrew Morton
2020-04-02 4:06 ` [patch 062/155] mm: memcg/slab: use mem_cgroup_from_obj() Andrew Morton
2020-04-02 4:06 ` [patch 063/155] mm: kmem: cleanup (__)memcg_kmem_charge_memcg() arguments Andrew Morton
2020-04-02 4:06 ` [patch 064/155] mm: kmem: cleanup memcg_kmem_uncharge_memcg() arguments Andrew Morton
2020-04-02 4:06 ` [patch 065/155] mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page() Andrew Morton
2020-04-02 4:06 ` [patch 066/155] mm: kmem: switch to nr_pages in (__)memcg_kmem_charge_memcg() Andrew Morton
2020-04-02 4:06 ` [patch 067/155] mm: memcg/slab: cache page number in memcg_(un)charge_slab() Andrew Morton
2020-04-02 4:06 ` [patch 068/155] mm: kmem: rename (__)memcg_kmem_(un)charge_memcg() to __memcg_kmem_(un)charge() Andrew Morton
2020-04-02 4:07 ` [patch 069/155] mm: memcontrol: fix memory.low proportional distribution Andrew Morton
2020-04-02 4:07 ` [patch 070/155] mm: memcontrol: clean up and document effective low/min calculations Andrew Morton
2020-04-02 4:07 ` [patch 071/155] mm: memcontrol: recursive memory.low protection Andrew Morton
2020-04-02 4:07 ` [patch 072/155] memcg: css_tryget_online cleanups Andrew Morton
2020-04-02 4:07 ` [patch 073/155] mm/memcontrol.c: make mem_cgroup_id_get_many() __maybe_unused Andrew Morton
2020-04-02 4:07 ` [patch 074/155] mm, memcg: prevent memory.high load/store tearing Andrew Morton
2020-04-02 4:07 ` [patch 075/155] mm, memcg: prevent memory.max load tearing Andrew Morton
2020-04-02 4:07 ` [patch 076/155] mm, memcg: prevent memory.low load/store tearing Andrew Morton
2020-04-02 4:07 ` [patch 077/155] mm, memcg: prevent memory.min " Andrew Morton
2020-04-02 4:07 ` [patch 078/155] mm, memcg: prevent memory.swap.max load tearing Andrew Morton
2020-04-02 4:07 ` [patch 079/155] mm, memcg: prevent mem_cgroup_protected store tearing Andrew Morton
2020-04-02 4:07 ` [patch 080/155] mm: memcg: make memory.oom.group tolerable to task migration Andrew Morton
2020-04-02 4:07 ` [patch 081/155] mm/mapping_dirty_helpers: update huge page-table entry callbacks Andrew Morton
2020-04-02 4:07 ` [patch 082/155] mm/vma: move VM_NO_KHUGEPAGED into generic header Andrew Morton
2020-04-02 4:07 ` [patch 083/155] mm/vma: make vma_is_foreign() available for general use Andrew Morton
2020-04-02 4:07 ` [patch 084/155] mm/vma: make is_vma_temporary_stack() " Andrew Morton
2020-04-02 4:07 ` [patch 085/155] mm: add pagemap.h to the fine documentation Andrew Morton
2020-04-02 4:07 ` [patch 086/155] mm/gup: rename "nonblocking" to "locked" where proper Andrew Morton
2020-04-02 4:08 ` [patch 087/155] mm/gup: fix __get_user_pages() on fault retry of hugetlb Andrew Morton
2020-04-02 4:08 ` [patch 088/155] mm: introduce fault_signal_pending() Andrew Morton
2020-04-02 4:08 ` [patch 089/155] x86/mm: use helper fault_signal_pending() Andrew Morton
2020-04-02 4:08 ` [patch 090/155] arc/mm: " Andrew Morton
2020-04-02 4:08 ` [patch 091/155] arm64/mm: " Andrew Morton
2020-04-02 4:08 ` [patch 092/155] powerpc/mm: " Andrew Morton
2020-04-02 4:08 ` [patch 093/155] sh/mm: " Andrew Morton
2020-04-02 4:08 ` [patch 094/155] mm: return faster for non-fatal signals in user mode faults Andrew Morton
2020-04-02 4:08 ` [patch 095/155] userfaultfd: don't retake mmap_sem to emulate NOPAGE Andrew Morton
2020-04-02 4:08 ` [patch 096/155] mm: introduce FAULT_FLAG_DEFAULT Andrew Morton
2020-04-02 4:08 ` [patch 097/155] mm: introduce FAULT_FLAG_INTERRUPTIBLE Andrew Morton
2020-04-02 4:08 ` [patch 098/155] mm: allow VM_FAULT_RETRY for multiple times Andrew Morton
2020-04-02 4:08 ` [patch 099/155] mm/gup: " Andrew Morton
2020-04-02 4:08 ` [patch 100/155] mm/gup: allow to react to fatal signals Andrew Morton
2020-04-02 4:09 ` [patch 101/155] mm/userfaultfd: honor FAULT_FLAG_KILLABLE in fault path Andrew Morton
2020-04-02 4:09 ` [patch 102/155] mm: clarify a confusing comment for remap_pfn_range() Andrew Morton
2020-04-02 4:09 ` [patch 103/155] mm/memory.c: clarify a confusing comment for vm_iomap_memory Andrew Morton
2020-04-02 4:09 ` [patch 104/155] mmap: remove inline of vm_unmapped_area Andrew Morton
2020-04-02 4:09 ` [patch 105/155] mm: mmap: add trace point " Andrew Morton
2020-04-02 4:09 ` [patch 106/155] mm/mremap: add MREMAP_DONTUNMAP to mremap() Andrew Morton
2020-04-02 4:09 ` [patch 107/155] selftests: add MREMAP_DONTUNMAP selftest Andrew Morton
2020-04-02 4:09 ` [patch 108/155] mm/sparsemem: get address to page struct instead of address to pfn Andrew Morton
2020-04-02 4:09 ` [patch 109/155] mm/sparse: rename pfn_present() to pfn_in_present_section() Andrew Morton
2020-04-02 4:09 ` [patch 110/155] mm/sparse.c: use kvmalloc/kvfree to alloc/free memmap for the classic sparse Andrew Morton
2020-04-02 4:09 ` [patch 111/155] mm/sparse.c: allocate memmap preferring the given node Andrew Morton
2020-04-02 4:09 ` [patch 112/155] kasan: detect negative size in memory operation function Andrew Morton
2020-04-02 4:09 ` [patch 113/155] kasan: add test for invalid size in memmove Andrew Morton
2020-04-02 4:09 ` [patch 114/155] mm/page_alloc: increase default min_free_kbytes bound Andrew Morton
2020-04-02 4:09 ` [patch 115/155] mm, pagealloc: micro-optimisation: save two branches on hot page allocation path Andrew Morton
2020-04-02 4:09 ` [patch 116/155] mm/page_alloc.c: use free_area_empty() instead of open-coding Andrew Morton
2020-04-02 4:09 ` [patch 117/155] mm/page_alloc.c: micro-optimisation Remove unnecessary branch Andrew Morton
2020-04-02 4:09 ` [patch 118/155] mm/page_alloc: simplify page_is_buddy() for better code readability Andrew Morton
2020-04-02 4:09 ` [patch 119/155] mm: vmpressure: don't need call kfree if kstrndup fails Andrew Morton
2020-04-02 4:10 ` [patch 120/155] mm: vmpressure: use mem_cgroup_is_root API Andrew Morton
2020-04-02 4:10 ` [patch 121/155] mm: vmscan: replace open codings to NUMA_NO_NODE Andrew Morton
2020-04-02 4:10 ` [patch 122/155] mm/vmscan.c: remove cpu online notification for now Andrew Morton
2020-04-02 4:10 ` [patch 123/155] mm/vmscan.c: fix data races using kswapd_classzone_idx Andrew Morton
2020-04-02 4:10 ` [patch 124/155] mm/vmscan.c: clean code by removing unnecessary assignment Andrew Morton
2020-04-02 4:10 ` [patch 125/155] mm/vmscan.c: make may_enter_fs bool in shrink_page_list() Andrew Morton
2020-04-02 4:10 ` [patch 126/155] mm/vmscan.c: do_try_to_free_pages(): clean code by removing unnecessary assignment Andrew Morton
2020-04-02 4:10 ` [patch 127/155] selftests: vm: drop dependencies on page flags from mlock2 tests Andrew Morton
2020-04-02 4:10 ` [patch 128/155] mm,compaction,cma: add alloc_contig flag to compact_control Andrew Morton
2020-04-02 4:10 ` [patch 129/155] mm,thp,compaction,cma: allow THP migration for CMA allocations Andrew Morton
2020-04-02 4:10 ` [patch 130/155] mm, compaction: fully assume capture is not NULL in compact_zone_order() Andrew Morton
2020-04-02 4:10 ` [patch 131/155] mm/compaction: really limit compact_unevictable_allowed to 0 and 1 Andrew Morton
2020-04-02 4:10 ` [patch 132/155] mm/compaction: Disable compact_unevictable_allowed on RT Andrew Morton
2020-04-02 4:10 ` [patch 133/155] mm/compaction.c: clean code by removing unnecessary assignment Andrew Morton
2020-04-02 4:10 ` [patch 134/155] mm/mempolicy: support MPOL_MF_STRICT for huge page mapping Andrew Morton
2020-04-02 4:10 ` [patch 135/155] mm/mempolicy: check hugepage migration is supported by arch in vma_migratable() Andrew Morton
2020-04-02 4:10 ` [patch 136/155] mm: mempolicy: use VM_BUG_ON_VMA in queue_pages_test_walk() Andrew Morton
2020-04-02 4:10 ` [patch 137/155] mm: mempolicy: require at least one nodeid for MPOL_PREFERRED Andrew Morton
2020-04-02 4:11 ` [patch 138/155] mm/memblock.c: remove redundant assignment to variable max_addr Andrew Morton
2020-04-02 4:11 ` [patch 139/155] hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization Andrew Morton
2020-04-02 4:11 ` [patch 140/155] hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race Andrew Morton
2020-04-02 4:11 ` [patch 141/155] hugetlb_cgroup: add hugetlb_cgroup reservation counter Andrew Morton
2020-04-02 4:11 ` [patch 142/155] hugetlb_cgroup: add interface for charge/uncharge hugetlb reservations Andrew Morton
2020-04-02 4:11 ` [patch 143/155] mm/hugetlb_cgroup: fix hugetlb_cgroup migration Andrew Morton
2020-04-02 4:11 ` [patch 144/155] hugetlb_cgroup: add reservation accounting for private mappings Andrew Morton
2020-04-02 4:11 ` [patch 145/155] hugetlb: disable region_add file_region coalescing Andrew Morton
2020-04-02 4:11 ` [patch 146/155] hugetlb_cgroup: add accounting for shared mappings Andrew Morton
2020-04-02 4:11 ` [patch 147/155] hugetlb_cgroup: support noreserve mappings Andrew Morton
2020-04-02 4:11 ` [patch 148/155] hugetlb: support file_region coalescing again Andrew Morton
2020-04-02 4:11 ` [patch 149/155] hugetlb_cgroup: add hugetlb_cgroup reservation tests Andrew Morton
2020-04-02 4:11 ` [patch 150/155] hugetlb_cgroup: add hugetlb_cgroup reservation docs Andrew Morton
2020-04-02 4:11 ` [patch 151/155] mm/hugetlb.c: clean code by removing unnecessary initialization Andrew Morton
2020-04-02 4:11 ` [patch 152/155] mm/hugetlb: remove unnecessary memory fetch in PageHeadHuge() Andrew Morton
2020-04-02 4:11 ` [patch 153/155] selftests/vm: fix map_hugetlb length used for testing read and write Andrew Morton
2020-04-02 4:11 ` [patch 154/155] mm/hugetlb: fix build failure with HUGETLB_PAGE but not HUGEBTLBFS Andrew Morton
2020-04-02 4:11 ` [patch 155/155] include/linux/huge_mm.h: check PageTail in hpage_nr_pages even when !THP Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2d45b8b7-ecbc-298f-5124-cb635dd3928a@nvidia.com \
--to=jhubbard@nvidia.com \
--cc=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=dan.j.williams@intel.com \
--cc=david@fromorbit.com \
--cc=hch@infradead.org \
--cc=imbrenda@linux.ibm.com \
--cc=ira.weiny@intel.com \
--cc=jack@suse.cz \
--cc=jgg@ziepe.ca \
--cc=jglisse@redhat.com \
--cc=kirill.shutemov@linux.intel.com \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.com \
--cc=mike.kravetz@oracle.com \
--cc=penguin-kernel@I-love.SAKURA.ne.jp \
--cc=shuah@kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=vbabka@suse.cz \
--cc=viro@zeniv.linux.org.uk \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).