ubuntu-kernel-tests

hugemmap34 from ubuntu_ltp_stable/hugetlb failed on B/F/J PowerPC

Bug #2093235 reported by Po-Hsu Lin on 2025-01-08

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	ubuntu-kernel-tests	New	Undecided	Unassigned

Bug Description

This is a new test case specific for PowerPC, it was added into LTP from libhugetlbfs on 2024 Nov. 01 [1] therefore this is not a regression but a new failure after updating our LTP fork.

This issue can be found on B/F/J kernel, passed with newer kernels.

Test log:
startup='Tue Jan 7 03:08:04 2025'
tst_hugepage.c:84: TINFO: 1 hugepage(s) reserved
tst_tmpdir.c:316: TINFO: Using /tmp/ltp-zJ9QXhyfOc/LTP_hugZCgYS8 as tmpdir (ext2/ext3/ext4 filesystem)
tst_test.c:1103: TINFO: Mounting none to /tmp/ltp-zJ9QXhyfOc/LTP_hugZCgYS8/hugetlbfs fstyp=hugetlbfs flags=0
tst_test.c:1893: TINFO: LTP version: 20230929-1018-g20e346e73
tst_test.c:1897: TINFO: Tested kernel: 5.15.0-130-generic #140-Ubuntu SMP Wed Dec 18 17:59:12 UTC 2024 ppc64le
tst_test.c:1728: TINFO: Timeout per run is 0h 00m 30s
hugemmap34.c:152: TINFO: searching for huge page and child stack placement
hugemmap34.c:175: TINFO: potential stack at address 0x792a2d400000
hugemmap34.c:191: TINFO: stack = 0x792a2d400000-0x792a2d600000, hugepage = 0x792a2c200000-0x792a2c400000
tst_coredump.c:30: TINFO: Avoid dumping corefile for process(pid=74336)
hugemmap34.c:56: TINFO: Child process starting with top of stack at 0x792a2d5fff80
tst_test.c:1790: TBROK: Test killed by SIGSEGV!