make -C tools/testing/selftests TARGETS="drivers/net/hw" TEST_PROGS=loopbaack.sh TEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-22/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-22/tools/testing/selftests/drivers/net/hw'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-22/tools/testing/selftests/drivers/net/hw'
make[1]: Entering directory '/home/virtme/testing-22/tools/testing/selftests/drivers/net/hw'
TAP version 13
1..1
# overriding timeout to 360
# selftests: drivers/net/hw: loopback.sh
# Error: Unknown device type.
# Failed to create netif
not ok 1 selftests: drivers/net/hw: loopback.sh # exit=1
make[1]: Leaving directory '/home/virtme/testing-22/tools/testing/selftests/drivers/net/hw'
make: Leaving directory '/home/virtme/testing-22/tools/testing/selftests'
xx__-> echo $?
0
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff888002b540e0 (size 32):
  comm "bash", pid 1594, jiffies 4294855285
  hex dump (first 32 bytes):
    a0 26 00 0a 80 88 ff ff 00 dc 05 ae ff ff ff ff  .&..............
    40 ed a6 0b 80 88 ff ff cc cc cc cc cc cc cc cc  @...............
  backtrace (crc 48050be3):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    __x64_sys_close+0x7c/0xd0
    do_syscall_64+0xc1/0x1d0
    entry_SYSCALL_64_after_hwframe+0x77/0x7f
unreferenced object 0xffff888002b54320 (size 32):
  comm "bash", pid 1594, jiffies 4294855292
  hex dump (first 32 bytes):
    08 34 8e 02 80 88 ff ff 00 dc 05 ae ff ff ff ff  .4..............
    40 e4 a6 0b 80 88 ff ff cc cc cc cc cc cc cc cc  @...............
  backtrace (crc d0c0a3f1):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    __x64_sys_close+0x7c/0xd0
    do_syscall_64+0xc1/0x1d0
    entry_SYSCALL_64_after_hwframe+0x77/0x7f
xx__->