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From: kernel test robot <oliver.sang@intel.com>
To: Pankaj Raghav <p.raghav@samsung.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
	David Hildenbrand <david@redhat.com>,
	<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
	Suren Baghdasaryan <surenb@google.com>,
	Ryan Roberts <ryan.roberts@arm.com>,
	Mike Rapoport <rppt@kernel.org>, Michal Hocko <mhocko@suse.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	Nico Pache <npache@redhat.com>, Dev Jain <dev.jain@arm.com>,
	Baolin Wang <baolin.wang@linux.alibaba.com>,
	"Borislav Petkov" <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
	"H . Peter Anvin" <hpa@zytor.com>,
	Vlastimil Babka <vbabka@suse.cz>, Zi Yan <ziy@nvidia.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	"Liam R . Howlett" <Liam.Howlett@oracle.com>,
	Jens Axboe <axboe@kernel.dk>, <willy@infradead.org>,
	<x86@kernel.org>, <linux-block@vger.kernel.org>,
	<linux-fsdevel@vger.kernel.org>,
	"Darrick J . Wong" <djwong@kernel.org>, <mcgrof@kernel.org>,
	<gost.dev@samsung.com>, <kernel@pankajraghav.com>, <hch@lst.de>,
	Pankaj Raghav <p.raghav@samsung.com>, <oliver.sang@intel.com>
Subject: Re: [PATCH 3/5] mm: add static PMD zero page
Date: Tue, 24 Jun 2025 16:51:02 +0800	[thread overview]
Message-ID: <202506201441.2f96266-lkp@intel.com> (raw)
In-Reply-To: <20250612105100.59144-4-p.raghav@samsung.com>



Hello,

kernel test robot noticed "WARNING:at_mm/gup.c:#try_grab_folio" on:

commit: 8e628a9d6cc5c377ae06b7821f8280cd6ff2a20f ("[PATCH 3/5] mm: add static PMD zero page")
url: https://github.com/intel-lab-lkp/linux/commits/Pankaj-Raghav/mm-move-huge_zero_page-declaration-from-huge_mm-h-to-mm-h/20250612-185248
patch link: https://lore.kernel.org/all/20250612105100.59144-4-p.raghav@samsung.com/
patch subject: [PATCH 3/5] mm: add static PMD zero page

in testcase: trinity
version: trinity-x86_64-ba2360ed-1_20241228
with following parameters:

	runtime: 300s
	group: group-03
	nr_groups: 5



config: x86_64-randconfig-077-20250618
compiler: clang-20
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202506201441.2f96266-lkp@intel.com


[  379.105772][ T4274] ------------[ cut here ]------------
[ 379.107617][ T4274] WARNING: CPU: 0 PID: 4274 at mm/gup.c:148 try_grab_folio (mm/gup.c:148 (discriminator 12)) 
[  379.109660][ T4274] Modules linked in:
[  379.111018][ T4274] CPU: 0 UID: 65534 PID: 4274 Comm: trinity-c3 Not tainted 6.16.0-rc1-00003-g8e628a9d6cc5 #1 PREEMPT(voluntary)
[  379.113741][ T4274] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 379.116285][ T4274] RIP: 0010:try_grab_folio (mm/gup.c:148 (discriminator 12)) 
[ 379.117678][ T4274] Code: 00 48 01 1d 6f 95 3f 0b 48 c7 c7 38 95 55 8f be 08 00 00 00 e8 76 98 0f 00 48 01 1d 47 08 ac 0d e9 e4 fe ff ff e8 c5 2c cd ff <0f> 0b b8 f4 ff ff ff e9 d5 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38
All code
========
   0:	00 48 01             	add    %cl,0x1(%rax)
   3:	1d 6f 95 3f 0b       	sbb    $0xb3f956f,%eax
   8:	48 c7 c7 38 95 55 8f 	mov    $0xffffffff8f559538,%rdi
   f:	be 08 00 00 00       	mov    $0x8,%esi
  14:	e8 76 98 0f 00       	call   0xf988f
  19:	48 01 1d 47 08 ac 0d 	add    %rbx,0xdac0847(%rip)        # 0xdac0867
  20:	e9 e4 fe ff ff       	jmp    0xffffffffffffff09
  25:	e8 c5 2c cd ff       	call   0xffffffffffcd2cef
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	b8 f4 ff ff ff       	mov    $0xfffffff4,%eax
  31:	e9 d5 fe ff ff       	jmp    0xffffffffffffff0b
  36:	44 89 f1             	mov    %r14d,%ecx
  39:	80 e1 07             	and    $0x7,%cl
  3c:	80 c1 03             	add    $0x3,%cl
  3f:	38                   	.byte 0x38

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	b8 f4 ff ff ff       	mov    $0xfffffff4,%eax
   7:	e9 d5 fe ff ff       	jmp    0xfffffffffffffee1
   c:	44 89 f1             	mov    %r14d,%ecx
   f:	80 e1 07             	and    $0x7,%cl
  12:	80 c1 03             	add    $0x3,%cl
  15:	38                   	.byte 0x38
[  379.122288][ T4274] RSP: 0018:ffffc90003eafc00 EFLAGS: 00010246
[  379.123803][ T4274] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[  379.125678][ T4274] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[  379.127640][ T4274] RBP: 0000000000210008 R08: 0000000000000000 R09: 0000000000000000
[  379.129505][ T4274] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[  379.131448][ T4274] R13: ffffea0000398000 R14: ffffea0000398034 R15: ffffea0000398000
[  379.133373][ T4274] FS:  00007f8feed44740(0000) GS:0000000000000000(0000) knlGS:0000000000000000
[  379.135522][ T4274] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  379.137151][ T4274] CR2: 000000000000006e CR3: 0000000157d77000 CR4: 00000000000406f0
[  379.139063][ T4274] Call Trace:
[  379.139969][ T4274]  <TASK>
[ 379.140739][ T4274] follow_huge_pmd (mm/gup.c:767) 
[ 379.141902][ T4274] __get_user_pages (mm/gup.c:993) 
[ 379.143221][ T4274] populate_vma_page_range (mm/gup.c:1926 (discriminator 1)) 
[ 379.144519][ T4274] __mm_populate (mm/gup.c:2029) 
[ 379.145559][ T4274] vm_mmap_pgoff (include/linux/mm.h:? mm/util.c:584) 
[ 379.146769][ T4274] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 379.148226][ T4274] do_syscall_64 (arch/x86/entry/syscall_64.c:?) 
[ 379.149357][ T4274] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:473 (discriminator 3)) 
[ 379.150866][ T4274] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  379.152205][ T4274] RIP: 0033:0x7f8feee48719
[ 379.153354][ T4274] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b7 06 0d 00 f7 d8 64 89 01 48
All code
========
   0:	08 89 e8 5b 5d c3    	or     %cl,-0x3ca2a418(%rcx)
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	90                   	nop
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d b7 06 0d 00 	mov    0xd06b7(%rip),%rcx        # 0xd06f1
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d b7 06 0d 00 	mov    0xd06b7(%rip),%rcx        # 0xd06c7
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[  379.157899][ T4274] RSP: 002b:00007ffc477ec658 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[  379.159864][ T4274] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8feee48719
[  379.161627][ T4274] RDX: 0000000000000004 RSI: 0000000000200000 RDI: 0000000000000000
[  379.163409][ T4274] RBP: 00007f8fed769058 R08: ffffffffffffffff R09: 0000000000000000
[  379.165255][ T4274] R10: 0000000004008862 R11: 0000000000000246 R12: 0000000000000009
[  379.167147][ T4274] R13: 00007f8feed446c0 R14: 00007f8fed769058 R15: 00007f8fed769000
[  379.169043][ T4274]  </TASK>
[  379.169891][ T4274] irq event stamp: 771243
[ 379.170971][ T4274] hardirqs last enabled at (771255): __console_unlock (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:119 arch/x86/include/asm/irqflags.h:159 kernel/printk/printk.c:344 kernel/printk/printk.c:2885) 
[ 379.173320][ T4274] hardirqs last disabled at (771278): __console_unlock (kernel/printk/printk.c:342 (discriminator 9) kernel/printk/printk.c:2885 (discriminator 9)) 
[ 379.175642][ T4274] softirqs last enabled at (771272): handle_softirqs (arch/x86/include/asm/preempt.h:27 kernel/softirq.c:426 kernel/softirq.c:607) 
[ 379.177979][ T4274] softirqs last disabled at (771263): __irq_exit_rcu (arch/x86/include/asm/jump_label.h:36 kernel/softirq.c:682) 
[  379.180133][ T4274] ---[ end trace 0000000000000000 ]---


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250620/202506201441.2f96266-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


  reply	other threads:[~2025-06-24  8:51 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-12 10:50 [PATCH 0/5] add STATIC_PMD_ZERO_PAGE config option Pankaj Raghav
2025-06-12 10:50 ` [PATCH 1/5] mm: move huge_zero_page declaration from huge_mm.h to mm.h Pankaj Raghav
2025-06-12 10:50 ` [PATCH 2/5] huge_memory: add huge_zero_page_shrinker_(init|exit) function Pankaj Raghav
2025-06-12 10:50 ` [PATCH 3/5] mm: add static PMD zero page Pankaj Raghav
2025-06-24  8:51   ` kernel test robot [this message]
2025-06-12 10:50 ` [PATCH 4/5] mm: add mm_get_static_huge_zero_folio() routine Pankaj Raghav
2025-06-12 14:09   ` Dave Hansen
2025-06-12 20:54     ` Pankaj Raghav (Samsung)
2025-06-16  9:14       ` David Hildenbrand
2025-06-16 10:41         ` Pankaj Raghav (Samsung)
2025-06-12 10:51 ` [PATCH 5/5] block: use mm_huge_zero_folio in __blkdev_issue_zero_pages() Pankaj Raghav
2025-06-12 13:50 ` [PATCH 0/5] add STATIC_PMD_ZERO_PAGE config option Dave Hansen
2025-06-12 20:36   ` Pankaj Raghav (Samsung)
2025-06-12 21:46     ` Dave Hansen
2025-06-13  8:58       ` Pankaj Raghav (Samsung)
2025-06-16  9:12         ` David Hildenbrand
2025-06-16 10:49           ` Pankaj Raghav (Samsung)
2025-06-16  5:40 ` Christoph Hellwig
2025-06-16  9:00   ` Pankaj Raghav

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