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
unreferenced object 0xffff888004e6f1a0 (size 32):
  comm "softirq", pid 0, jiffies 4294869040
  hex dump (first 32 bytes):
    28 4f c6 1c 80 88 ff ff 00 dc 05 b8 ff ff ff ff  (O..............
    c8 ec 62 0f 80 88 ff ff cc cc cc cc cc cc cc cc  ..b.............
  backtrace (crc b72c8c95):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    inet_twsk_free+0x11d/0x180
    call_timer_fn+0x13b/0x230
    __run_timers+0x545/0x810
    run_timer_softirq+0xee/0x1c0
    handle_softirqs+0x1f6/0x5c0
    run_ksoftirqd+0x33/0x60
    smpboot_thread_fn+0x306/0x850
    kthread+0x359/0x5d0
    ret_from_fork+0x31/0x70
    ret_from_fork_asm+0x1a/0x30
unreferenced object 0xffff88800b7db860 (size 32):
  comm "softirq", pid 0, jiffies 4294873207
  hex dump (first 32 bytes):
    60 f0 00 09 80 88 ff ff 00 dc 05 b8 ff ff ff ff  `...............
    f8 ef 62 0f 80 88 ff ff cc cc cc cc cc cc cc cc  ..b.............
  backtrace (crc 7bd376ae):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    inet_twsk_free+0x11d/0x180
    call_timer_fn+0x13b/0x230
    __run_timers+0x545/0x810
    run_timer_softirq+0xee/0x1c0
    handle_softirqs+0x1f6/0x5c0
    do_softirq+0x4d/0xa0
    __local_bh_enable_ip+0xf6/0x120
    sk_stream_wait_memory+0x77c/0xde0
    tcp_sendmsg_locked+0xb9c/0x3380
    tcp_sendmsg+0x2c/0x50
    sock_write_iter+0x27b/0x520
    vfs_write+0xbdb/0x11e0
    ksys_write+0x18d/0x1d0
    do_syscall_64+0xc1/0x1d0
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff888004e6f1a0 (size 32):
  comm "softirq", pid 0, jiffies 4294869040
  hex dump (first 32 bytes):
    28 4f c6 1c 80 88 ff ff 00 dc 05 b8 ff ff ff ff  (O..............
    c8 ec 62 0f 80 88 ff ff cc cc cc cc cc cc cc cc  ..b.............
  backtrace (crc b72c8c95):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    inet_twsk_free+0x11d/0x180
    call_timer_fn+0x13b/0x230
    __run_timers+0x545/0x810
    run_timer_softirq+0xee/0x1c0
    handle_softirqs+0x1f6/0x5c0
    run_ksoftirqd+0x33/0x60
    smpboot_thread_fn+0x306/0x850
    kthread+0x359/0x5d0
    ret_from_fork+0x31/0x70
    ret_from_fork_asm+0x1a/0x30
unreferenced object 0xffff88800b7db860 (size 32):
  comm "softirq", pid 0, jiffies 4294873207
  hex dump (first 32 bytes):
    60 f0 00 09 80 88 ff ff 00 dc 05 b8 ff ff ff ff  `...............
    f8 ef 62 0f 80 88 ff ff cc cc cc cc cc cc cc cc  ..b.............
  backtrace (crc 7bd376ae):
    __kmalloc_cache_noprof+0x2df/0x390
    kmem_cache_free+0xf3/0x330
    inet_twsk_free+0x11d/0x180
    call_timer_fn+0x13b/0x230
    __run_timers+0x545/0x810
    run_timer_softirq+0xee/0x1c0
    handle_softirqs+0x1f6/0x5c0
    do_softirq+0x4d/0xa0
    __local_bh_enable_ip+0xf6/0x120
    sk_stream_wait_memory+0x77c/0xde0
    tcp_sendmsg_locked+0xb9c/0x3380
    tcp_sendmsg+0x2c/0x50
    sock_write_iter+0x27b/0x520
    vfs_write+0xbdb/0x11e0
    ksys_write+0x18d/0x1d0
    do_syscall_64+0xc1/0x1d0
xx__->