Messages in this thread | | | From | "Justin Piszcz" <> | Subject | RE: 5.1 kernel: khugepaged stuck at 100% | Date | Wed, 15 May 2019 03:25:22 -0400 |
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> -----Original Message----- > From: Kirill A. Shutemov [mailto:kirill@shutemov.name] > Sent: Thursday, May 09, 2019 7:14 AM > To: Justin Piszcz > Cc: linux-kernel@vger.kernel.org > Subject: Re: 5.1 kernel: khugepaged stuck at 100% > > On Thu, May 09, 2019 at 05:54:56AM -0400, Justin Piszcz wrote:
[ ... ]
> > Thoughts on debugging / before reboot to clear this up? > > Could you check what khugepaged doing? > > cat /proc/$(pidof khugepaged)/stack
Hello, the next time I see this (khugepage at 100%) I will provide the requested info.
However, this time I'm getting a kernel read fault (below) under 5.1.1, under 5.0.x and earlier I've never seen any of these errors before:
[54101.281515] BUG: unable to handle kernel paging request at ffffea0002060000 [54101.281519] #PF error: [normal kernel read fault] [54101.281521] PGD 103ffee067 P4D 103ffee067 PUD 103ffed067 PMD 0 [54101.281524] Oops: 0000 [#1] SMP PTI [54101.281527] CPU: 0 PID: 77 Comm: khugepaged Tainted: G T 5.1.1 #1 [54101.281528] Hardware name: Supermicro X9SRL-F/X9SRL-F, BIOS 3.2 01/16/2015 [54101.281534] RIP: 0010:isolate_freepages_block+0xb9/0x310 [54101.281535] Code: 24 28 48 c1 e0 06 40 f6 c5 1f 48 89 44 24 20 49 8d 45 79 48 89 44 24 18 44 89 f0 4d 89 ee 45 89 fd 41 89 c7 0f 84 ef 00 00 00 <48> 8b 03 41 83 c4 01 a9 00 00 01 00 75 0c 48 8b 43 08 a8 01 0f 84 [54101.281537] RSP: 0018:ffffc900003a7860 EFLAGS: 00010246 [54101.281538] RAX: 0000000000000000 RBX: ffffea0002060000 RCX: ffffc900003a7b69 [54101.281539] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff828c4790 [54101.281540] RBP: 0000000000081800 R08: 0000000000000001 R09: 0000000000000000 [54101.281542] R10: 0000000000000202 R11: ffffffff828c43d0 R12: 0000000000000000 [54101.281543] R13: 0000000000000000 R14: ffffc900003a7af0 R15: 0000000000000000 [54101.281544] FS: 0000000000000000(0000) GS:ffff88903f800000(0000) knlGS:0000000000000000 [54101.281546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [54101.281547] CR2: ffffea0002060000 CR3: 000000000280e002 CR4: 00000000001606f0 [54101.281548] Call Trace: [54101.281552] compaction_alloc+0x83d/0x8d0 [54101.281555] migrate_pages+0x30d/0x750 [54101.281557] ? isolate_migratepages_block+0xa10/0xa10 [54101.281559] ? __reset_isolation_suitable+0x110/0x110 [54101.281561] compact_zone+0x684/0xa70 [54101.281563] compact_zone_order+0x109/0x150 [54101.281566] ? schedule_timeout+0x1ba/0x290 [54101.281569] ? record_times+0x13/0xa0 [54101.281571] try_to_compact_pages+0x10d/0x220 [54101.281574] __alloc_pages_direct_compact+0x93/0x180 [54101.281576] __alloc_pages_nodemask+0x6c7/0xe20 [54101.281579] ? __wake_up_common_lock+0xb0/0xb0 [54101.281581] khugepaged+0x31f/0x19b0 [54101.281584] ? __wake_up_common_lock+0xb0/0xb0 [54101.281586] ? collapse_shmem.isra.4+0xc20/0xc20 [54101.281589] kthread+0x10a/0x120 [54101.281592] ? __kthread_create_on_node+0x1b0/0x1b0 [54101.281595] ret_from_fork+0x35/0x40 [54101.281597] CR2: ffffea0002060000 [54101.281599] ---[ end trace d9bfd1c296893a64 ]--- [54101.281601] RIP: 0010:isolate_freepages_block+0xb9/0x310 [54101.281602] Code: 24 28 48 c1 e0 06 40 f6 c5 1f 48 89 44 24 20 49 8d 45 79 48 89 44 24 18 44 89 f0 4d 89 ee 45 89 fd 41 89 c7 0f 84 ef 00 00 00 <48> 8b 03 41 83 c4 01 a9 00 00 01 00 75 0c 48 8b 43 08 a8 01 0f 84 [54101.281604] RSP: 0018:ffffc900003a7860 EFLAGS: 00010246 [54101.281605] RAX: 0000000000000000 RBX: ffffea0002060000 RCX: ffffc900003a7b69 [54101.281606] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff828c4790 [54101.281607] RBP: 0000000000081800 R08: 0000000000000001 R09: 0000000000000000 [54101.281608] R10: 0000000000000202 R11: ffffffff828c43d0 R12: 0000000000000000 [54101.281609] R13: 0000000000000000 R14: ffffc900003a7af0 R15: 0000000000000000 [54101.281610] FS: 0000000000000000(0000) GS:ffff88903f800000(0000) knlGS:0000000000000000 [54101.281611] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [54101.281613] CR2: ffffea0002060000 CR3: 000000000280e002 CR4: 00000000001606f0
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