[liam:maple_marks_v4] [maple_tree] f44e0ea8d4: WARNING:at_lib/maple_tree.c:#node_clear_tail

[liam:maple_marks_v4] [maple_tree] f44e0ea8d4: WARNING:at_lib/maple_tree.c:#node_clear_tail

[kernel test robot]

Hello,

kernel test robot noticed "WARNING:at_lib/maple_tree.c:#node_clear_tail" on:

commit: f44e0ea8d474ab9cb65305ae34780f1984515e1c ("maple_tree: Explicitly set node values to avoid clearing entire node") https://git.kernel.org/cgit/linux/kernel/git/liam/linux.git maple_marks_v4

in testcase: boot

config: x86_64-randconfig-011-20260914
compiler: clang-22
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 4 -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 <yi1.lai@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202610081209.cf3a5ca-lkp@intel.com


[    2.612810][    T0] ------------[ cut here ]------------
[    2.615535][    T0] WARNING: lib/maple_tree.c:2447 at node_clear_tail+0x3ee/0x480, CPU#0: swapper/0/0
[    2.620115][    T0] Modules linked in:
[    2.622063][    T0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G                T   7.3.0-rc1-00774-gf44e0ea8d474 #1 PREEMPT(full)
[    2.627914][    T0] Tainted: [T]=RANDSTRUCT
[    2.630014][    T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[    2.635145][    T0] RIP: 0010:node_clear_tail (maple_tree.c:2447)
[    2.637935][    T0] Code: 05 cf b0 7e 01 48 3b 44 24 20 75 58 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d 31 c0 31 c9 31 ff 31 d2 31 f6 c3 e8 e2 af b5 fb <0f> 0b eb d0 e8 d9 af b5 fb 48 c7 c7 c0 5e aa b6 48 8b 74 24 08 e8
All code
========
   0:	05 cf b0 7e 01       	add    $0x17eb0cf,%eax
   5:	48 3b 44 24 20       	cmp    0x20(%rsp),%rax
   a:	75 58                	jne    0x64
   c:	48 83 c4 28          	add    $0x28,%rsp
  10:	5b                   	pop    %rbx
  11:	41 5c                	pop    %r12
  13:	41 5d                	pop    %r13
  15:	41 5e                	pop    %r14
  17:	41 5f                	pop    %r15
  19:	5d                   	pop    %rbp
  1a:	31 c0                	xor    %eax,%eax
  1c:	31 c9                	xor    %ecx,%ecx
  1e:	31 ff                	xor    %edi,%edi
  20:	31 d2                	xor    %edx,%edx
  22:	31 f6                	xor    %esi,%esi
  24:	c3                   	ret
  25:	e8 e2 af b5 fb       	call   0xfffffffffbb5b00c
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	eb d0                	jmp    0xfffffffffffffffe
  2e:	e8 d9 af b5 fb       	call   0xfffffffffbb5b00c
  33:	48 c7 c7 c0 5e aa b6 	mov    $0xffffffffb6aa5ec0,%rdi
  3a:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  3f:	e8                   	.byte 0xe8

Code starting with the faulting instruction ===========================================
   0:	0f 0b                	ud2
   2:	eb d0                	jmp    0xffffffffffffffd4
   4:	e8 d9 af b5 fb       	call   0xfffffffffbb5afe2
   9:	48 c7 c7 c0 5e aa b6 	mov    $0xffffffffb6aa5ec0,%rdi
  10:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  15:	e8                   	.byte 0xe8
[    2.647533][    T0] RSP: 0000:ffffffffb5a07980 EFLAGS: 00010046
[    2.650539][    T0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[    2.654515][    T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[    2.658372][    T0] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
[    2.662307][    T0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000010
[    2.666281][    T0] R13: 0000000000000010 R14: ffffffffb572b002 R15: ffff8881022e8400
[    2.670252][    T0] FS:  0000000000000000(0000) GS:0000000000000000(0000) knlGS:0000000000000000
[    2.674548][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.677741][    T0] CR2: ffff88843ffff000 CR3: 000000009d634000 CR4: 00000000000000b0
[    2.681737][    T0] Call Trace:
[    2.683296][    T0]  <TASK>
[    2.684659][    T0]  mas_wr_store_entry (maple_tree.c:3805)
[    2.687291][    T0]  ? early_irq_init (irq/irqdesc.c:195)
[    2.689639][    T0]  ? start_kernel (main.c:1088)
[    2.691946][    T0]  ? x86_64_start_reservations (x86/kernel/head64.c:310)
[    2.694726][    T0]  ? x86_64_start_kernel (x86/kernel/head64.c:291)
[    2.697359][    T0]  ? common_startup_64 (x86/kernel/head_64.S:418)
[    2.699845][    T0]  mas_store_gfp (maple_tree.c:5973)
[    2.702060][    T0]  early_irq_init (irq/irqdesc.c:195)
[    2.704262][    T0]  start_kernel (main.c:1088)
[    2.706233][    T0]  x86_64_start_reservations (x86/kernel/head64.c:310)
[    2.708590][    T0]  x86_64_start_kernel (x86/kernel/head64.c:291)
[    2.710834][    T0]  common_startup_64 (x86/kernel/head_64.S:418)
[    2.712798][    T0]  </TASK>
[    2.714169][    T0] irq event stamp: 0
[    2.716054][    T0] hardirqs last  enabled at (0): 0x0
[    2.719576][    T0] hardirqs last disabled at (0): 0x0
[    2.722938][    T0] softirqs last  enabled at (0): 0x0
[    2.725737][    T0] softirqs last disabled at (0): 0x0
[    2.729141][    T0] ---[ end trace 0000000000000000 ]---


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261008/202610081209.cf3a5ca-lkp@intel.com


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