[Bug 2152602] [NEW] set_mempolicy04 test fails - NUMA memory nodes are incorrectly allocated

Gabriela Bittencourt Thu, 14 May 2026 04:01:28 -0700

Public bug reported:

set_mempolicy04 from ubuntu_ltp_syscalls fails in allocating pages for
NUMA memory nodes.


Bug appears in tests of different fs.

98939  tst_test.c:1966: TINFO: === Testing on ext2 ===
98940  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98941  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98942  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98943  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98944  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98945  tst_test.c:1966: TINFO: === Testing on ext3 ===
98946  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98947  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98948  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98949  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98950  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98951  tst_test.c:1966: TINFO: === Testing on ext4 ===
98952  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98953  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98954  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98955  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98956  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98957  tst_test.c:1966: TINFO: === Testing on xfs ===
98958  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98959  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98960  set_mempolicy04.c:85: TPASS: Node 0 allocated 575 <546.17,583.83>
98961  set_mempolicy04.c:85: TPASS: Node 1 allocated 555 <546.17,583.83>
98962  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98963  tst_test.c:1966: TINFO: === Testing on btrfs ===
98964  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98965  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98966  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98967  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98968  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98969  tst_test.c:1966: TINFO: === Testing on vfat ===
98970  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98971  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98972  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98973  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98974  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
98975  tst_test.c:1966: TINFO: === Testing on tmpfs ===
98976  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
98977  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
98978  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
98979  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
98980  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)

** Affects: linux-aws (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  set_mempolicy04 from ubuntu_ltp_syscalls fails in allocating pages for
  NUMA memory nodes.
  
- Bug appears in different filesystems.
+ Bug appears in tests of different fs.
  
  98939  tst_test.c:1966: TINFO: === Testing on ext2 ===
  98940  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98941  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98942  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98943  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98944  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98945  tst_test.c:1966: TINFO: === Testing on ext3 ===
  98946  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98947  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98948  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98949  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98950  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98951  tst_test.c:1966: TINFO: === Testing on ext4 ===
  98952  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98953  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98954  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98955  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98956  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98957  tst_test.c:1966: TINFO: === Testing on xfs ===
  98958  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98959  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98960  set_mempolicy04.c:85: TPASS: Node 0 allocated 575 <546.17,583.83>
  98961  set_mempolicy04.c:85: TPASS: Node 1 allocated 555 <546.17,583.83>
  98962  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98963  tst_test.c:1966: TINFO: === Testing on btrfs ===
  98964  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98965  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98966  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98967  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98968  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98969  tst_test.c:1966: TINFO: === Testing on vfat ===
  98970  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98971  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98972  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98973  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98974  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)
  98975  tst_test.c:1966: TINFO: === Testing on tmpfs ===
  98976  tst_numa.c:200: TINFO: Found 2 NUMA memory nodes
  98977  set_mempolicy04.c:121: TPASS: set_mempolicy(MPOL_INTERLEAVE)
  98978  set_mempolicy04.c:88: TFAIL: Node 0 allocated 585, expected 
<546.17,583.83>
  98979  set_mempolicy04.c:88: TFAIL: Node 1 allocated 545, expected 
<546.17,583.83>
  98980  set_mempolicy04.c:101: TPASS: Sum of nodes equals to allocated pages 
(1130)

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Title:
  set_mempolicy04 test fails - NUMA memory nodes are incorrectly
  allocated

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[Bug 2152602] [NEW] set_mempolicy04 test fails - NUMA memory nodes are incorrectly allocated

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