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From: kernel test robot <oliver.sang@intel.com>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <linux-mm@kvack.org>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	David Hildenbrand <david@kernel.org>,
	Vishal Moola <vishal.moola@gmail.com>, <oliver.sang@intel.com>
Subject: Re: [PATCH 1/4] mm: Use frozen pages for page tables
Date: Mon, 17 Nov 2025 22:38:09 +0800	[thread overview]
Message-ID: <202511172257.ffd96dab-lkp@intel.com> (raw)
In-Reply-To: <20251113140448.1814860-2-willy@infradead.org>



Hello,

kernel test robot noticed "BUG:Bad_page_state_in_process" on:

commit: ffb870b766822062b6c71211c80342c85a7ffcd8 ("[PATCH 1/4] mm: Use frozen pages for page tables")
url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/mm-Use-frozen-pages-for-page-tables/20251113-222907
base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/all/20251113140448.1814860-2-willy@infradead.org/
patch subject: [PATCH 1/4] mm: Use frozen pages for page tables

in testcase: rcutorture
version: 
with following parameters:

	runtime: 300s
	test: cpuhotplug
	torture_type: trivial



config: x86_64-randconfig-101-20251114
compiler: clang-20
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G

(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/202511172257.ffd96dab-lkp@intel.com


[   19.289760][  T422] BUG: Bad page state in process modprobe  pfn:1618b2
[   19.290414][  T422] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1618b2
[   19.291313][  T422] flags: 0x8000000000000000(zone=2)
[   19.291714][  T422] raw: 8000000000000000 dead000000000100 dead000000000122 0000000000000000
[   19.292382][  T422] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   19.293020][  T422] page dumped because: nonzero _refcount
[   19.293444][  T422] Modules linked in:
[   19.293804][  T422] CPU: 0 UID: 0 PID: 422 Comm: modprobe Not tainted 6.18.0-rc5-00422-gffb870b76682 #1 PREEMPT(none)  65c9d11eede624b36533d4efe2c3c7798fc76b60
[   19.293811][  T422] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   19.293814][  T422] Call Trace:
[   19.293817][  T422]  <TASK>
[   19.293820][  T422]  dump_stack_lvl (lib/dump_stack.c:123)
[   19.293834][  T422]  ? show_regs_print_info (lib/dump_stack.c:104)
[   19.293842][  T422]  ? smp_call_function_many (kernel/smp.c:784)
[   19.293847][  T422]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.293854][  T422]  bad_page (mm/page_alloc.c:?)
[   19.293860][  T422]  __free_frozen_pages (mm/page_alloc.c:?)
[   19.293870][  T422]  change_page_attr_set_clr (include/linux/list.h:372)
[   19.293878][  T422]  ? __set_memory_prot (arch/x86/mm/pat/set_memory.c:2041)
[   19.293884][  T422]  ? __set_memory_prot (arch/x86/mm/pat/set_memory.c:2041)
[   19.293889][  T422]  ? trace_contention_end (include/trace/events/lock.h:122)
[   19.293897][  T422]  ? do_raw_spin_lock (arch/x86/include/asm/atomic.h:107)
[   19.293904][  T422]  set_memory_rox (arch/x86/mm/pat/set_memory.c:2327)
[   19.293910][  T422]  ? set_memory_nx (arch/x86/mm/pat/set_memory.c:2123 arch/x86/mm/pat/set_memory.c:2312)
[   19.293915][  T422]  ? set_memory_ro (arch/x86/mm/pat/set_memory.c:2321)
[   19.293921][  T422]  ? _raw_spin_unlock (arch/x86/include/asm/preempt.h:95 include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[   19.293929][  T422]  ? find_vmap_area (mm/vmalloc.c:2507)
[   19.293935][  T422]  module_enable_text_rox (kernel/module/strict_rwx.c:40)
[   19.293943][  T422]  complete_formation (kernel/module/main.c:3258)
[   19.293952][  T422]  ? post_relocation (kernel/module/main.c:3237)
[   19.293959][  T422]  ? init_build_id (kernel/module/kallsyms.c:?)
[   19.293967][  T422]  load_module (kernel/module/main.c:3468)
[   19.293979][  T422]  __se_sys_finit_module (kernel/module/main.c:? kernel/module/main.c:3713 kernel/module/main.c:3739 kernel/module/main.c:3723)
[   19.293987][  T422]  ? __x64_sys_finit_module (kernel/module/main.c:3723)
[   19.293998][  T422]  ? exc_page_fault (arch/x86/mm/fault.c:?)
[   19.294007][  T422]  ? __ia32_sys_write (fs/read_write.c:754)
[   19.294015][  T422]  ? do_sys_open (fs/open.c:1452)
[   19.294022][  T422]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   19.294026][  T422]  do_syscall_64 (arch/x86/entry/syscall_64.c:?)
[   19.294034][  T422]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   19.294038][  T422] RIP: 0033:0x7f8d36fda779
[   19.294042][  T422] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 4f 86 0d 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  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 4f 86 0d 00 	mov    0xd864f(%rip),%rcx        # 0xd8689
  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 4f 86 0d 00 	mov    0xd864f(%rip),%rcx        # 0xd865f
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   19.294046][  T422] RSP: 002b:00007ffe07ac3298 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   19.294051][  T422] RAX: ffffffffffffffda RBX: 000055b5fb23ae30 RCX: 00007f8d36fda779
[   19.294054][  T422] RDX: 0000000000000000 RSI: 000055b5e55e332b RDI: 0000000000000004
[   19.294056][  T422] RBP: 0000000000000000 R08: 0000000000000000 R09: 000055b5fb23c020
[   19.294059][  T422] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b5e55e332b
[   19.294061][  T422] R13: 0000000000040000 R14: 000055b5fb23ade0 R15: 0000000000000000
[   19.294069][  T422]  </TASK>
[   19.294071][  T422] Disabling lock debugging due to kernel taint
[   19.373082][  T422] BUG: Bad page state in process modprobe  pfn:163532
[   19.373680][  T422] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x163532
[   19.374387][  T422] flags: 0x8000000000000000(zone=2)
[   19.374795][  T422] raw: 8000000000000000 dead000000000100 dead000000000122 0000000000000000
[   19.375424][  T422] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
[   19.376107][  T422] page dumped because: nonzero _refcount
[   19.376525][  T422] Modules linked in: torture
[   19.376917][  T422] CPU: 0 UID: 0 PID: 422 Comm: modprobe Tainted: G    B               6.18.0-rc5-00422-gffb870b76682 #1 PREEMPT(none)  65c9d11eede624b36533d4efe2c3c7798fc76b60
[   19.376925][  T422] Tainted: [B]=BAD_PAGE
[   19.376927][  T422] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   19.376930][  T422] Call Trace:
[   19.376933][  T422]  <TASK>
[   19.376936][  T422]  dump_stack_lvl (lib/dump_stack.c:123)
[   19.376946][  T422]  ? show_regs_print_info (lib/dump_stack.c:104)
[   19.376952][  T422]  ? smp_call_function_many (kernel/smp.c:784)
[   19.376959][  T422]  bad_page (mm/page_alloc.c:?)
[   19.376964][  T422]  __free_frozen_pages (mm/page_alloc.c:?)
[   19.376972][  T422]  change_page_attr_set_clr (include/linux/list.h:372)
[   19.376979][  T422]  ? __set_memory_prot (arch/x86/mm/pat/set_memory.c:2041)
[   19.376984][  T422]  ? __set_memory_prot (arch/x86/mm/pat/set_memory.c:2041)
[   19.376989][  T422]  ? trace_contention_end (include/trace/events/lock.h:122)
[   19.376995][  T422]  ? do_raw_spin_lock (arch/x86/include/asm/atomic.h:107)
[   19.377001][  T422]  set_memory_rox (arch/x86/mm/pat/set_memory.c:2327)
[   19.377006][  T422]  ? set_memory_nx (arch/x86/mm/pat/set_memory.c:2123 arch/x86/mm/pat/set_memory.c:2312)
[   19.377010][  T422]  ? set_memory_ro (arch/x86/mm/pat/set_memory.c:2321)
[   19.377016][  T422]  ? _raw_spin_unlock (arch/x86/include/asm/preempt.h:95 include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[   19.377023][  T422]  ? find_vmap_area (mm/vmalloc.c:2507)
[   19.377028][  T422]  module_enable_text_rox (kernel/module/strict_rwx.c:40)
[   19.377036][  T422]  complete_formation (kernel/module/main.c:3258)
[   19.377042][  T422]  ? __might_fault (mm/memory.c:7142)
[   19.377046][  T422]  ? post_relocation (kernel/module/main.c:3237)
[   19.377051][  T422]  ? __might_fault (mm/memory.c:7142)
[   19.377054][  T422]  ? init_build_id (kernel/module/kallsyms.c:?)
[   19.377061][  T422]  load_module (kernel/module/main.c:3468)
[   19.377069][  T422]  __se_sys_finit_module (kernel/module/main.c:? kernel/module/main.c:3713 kernel/module/main.c:3739 kernel/module/main.c:3723)
[   19.377074][  T422]  ? __x64_sys_finit_module (kernel/module/main.c:3723)
[   19.377081][  T422]  ? do_sys_openat2 (fs/open.c:1447)
[   19.377089][  T422]  ? __ia32_sys_write (fs/read_write.c:754)
[   19.377095][  T422]  ? do_sys_open (fs/open.c:1452)
[   19.377100][  T422]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   19.377104][  T422]  do_syscall_64 (arch/x86/entry/syscall_64.c:?)
[   19.377111][  T422]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   19.377115][  T422] RIP: 0033:0x7f8d36fda779
[   19.377120][  T422] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 4f 86 0d 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  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 4f 86 0d 00 	mov    0xd864f(%rip),%rcx        # 0xd8689
  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 4f 86 0d 00 	mov    0xd864f(%rip),%rcx        # 0xd865f
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   19.377123][  T422] RSP: 002b:00007ffe07ac3298 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   19.377128][  T422] RAX: ffffffffffffffda RBX: 000055b5fb23ac50 RCX: 00007f8d36fda779
[   19.377131][  T422] RDX: 0000000000000000 RSI: 000055b5fb23aff0 RDI: 0000000000000005
[   19.377134][  T422] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   19.377136][  T422] R10: 0000000000000000 R11: 0000000000000246 R12: 000055b5fb23aff0
[   19.377139][  T422] R13: 0000000000040000 R14: 000055b5fb23ad80 R15: 0000000000000000
[   19.377143][  T422]  </TASK>


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251117/202511172257.ffd96dab-lkp@intel.com



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



  parent reply	other threads:[~2025-11-17 14:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-13 14:04 [PATCH 0/4] Convert pgtable to use frozen pages Matthew Wilcox (Oracle)
2025-11-13 14:04 ` [PATCH 1/4] mm: Use frozen pages for page tables Matthew Wilcox (Oracle)
2025-11-13 18:24   ` Vishal Moola (Oracle)
2025-11-13 19:14     ` Vishal Moola (Oracle)
2025-11-14 13:45       ` Matthew Wilcox
2025-11-14 14:31       ` Will Deacon
2025-11-17 14:38   ` kernel test robot [this message]
2025-11-18  0:44     ` Vishal Moola (Oracle)
2025-11-19 15:46   ` Chih-En Lin
2025-11-20 13:55     ` David Hildenbrand (Red Hat)
2025-11-13 14:04 ` [PATCH 2/4] mm: Account pagetable memory when allocated Matthew Wilcox (Oracle)
2025-11-13 19:39   ` Vishal Moola (Oracle)
2025-11-13 14:04 ` [PATCH 3/4] mm: Mark " Matthew Wilcox (Oracle)
2025-11-18 17:00   ` David Hildenbrand (Red Hat)
2025-11-13 14:04 ` [PATCH 4/4] pgtable: Remove uses of page->lru Matthew Wilcox (Oracle)
2025-11-20 13:56   ` David Hildenbrand (Red Hat)

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