[tip:locking/core] [futex] b78b0b6582: kselftests.damon.sysfs_memcg_path_leak.sh.fail

[kernel test robot]

Hello,

kernel test robot noticed "kselftests.damon.sysfs_memcg_path_leak.sh.fail" on:

commit: b78b0b65825275f58336a43611a700de174be8c3 ("futex: Use runtime constants for __futex_hash() hot path")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git locking/core


in testcase: kselftests
version: kselftests-x86_64-f5098b6bae76-1_20260727
with following parameters:

	group: damon



config: x86_64-rhel-9.4-kselftests
compiler: gcc-14
test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor Lake) with 32G memory

(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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202608071053.6db6276e-lkp@xxxxxxxxx


# timeout set to 300
# selftests: damon: sysfs_memcg_path_leak.sh
# unreferenced object 0xffff8881029e0ab8 (size 8):
#   comm "swapper/0", pid 1, jiffies 4294668108
#   hex dump (first 8 bytes):
#     00 00 d0 02 81 88 ff ff                          ........
#   backtrace (crc 6c1bc6d6):
#     __kmalloc_noprof+0x56b/0x830
#     futex_init+0x108/0x3c0
#     do_one_initcall+0xc3/0x4b0
#     do_initcalls+0x215/0x240
#     kernel_init_freeable+0x4a1/0x530
#     kernel_init+0x18/0x180
#     ret_from_fork+0x547/0x870
#     ret_from_fork_asm+0x1a/0x30
not ok 13 selftests: damon: sysfs_memcg_path_leak.sh # exit=1



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260807/202608071053.6db6276e-lkp@xxxxxxxxx



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https://github.com/intel/lkp-tests/wiki