make -C tools/testing/selftests TARGETS="net" TEST_PROGS=epoll_busy_poll TTEST_GEN_PROGS="" run_tests
make: Entering directory '/home/virtme/testing-3/tools/testing/selftests'
make[1]: Entering directory '/home/virtme/testing-3/tools/testing/selftests/net'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/virtme/testing-3/tools/testing/selftests/net'
make[1]: Entering directory '/home/virtme/testing-3/tools/testing/selftests/net'
TAP version 13
1..1
# overriding timeout to 7200
# selftests: net: epoll_busy_poll
# 0.00 [+0.00] TAP version 13
# 0.00 [+0.00] 1..5
# 0.00 [+0.00] # Starting 5 tests from 2 test cases.
# 0.00 [+0.00] #  RUN           invalid_fd.test_invalid_fd ...
# 0.00 [+0.00] #            OK  invalid_fd.test_invalid_fd
# 0.01 [+0.00] ok 1 invalid_fd.test_invalid_fd
# 0.01 [+0.00] #  RUN           epoll_busy_poll.test_get_params ...
# 0.01 [+0.00] #            OK  epoll_busy_poll.test_get_params
# 0.01 [+0.00] ok 2 epoll_busy_poll.test_get_params
# 0.01 [+0.00] #  RUN           epoll_busy_poll.test_set_invalid ...
# 0.02 [+0.01] #            OK  epoll_busy_poll.test_set_invalid
# 0.02 [+0.00] ok 3 epoll_busy_poll.test_set_invalid
# 0.02 [+0.00] #  RUN           epoll_busy_poll.test_set_and_get_valid ...
# 0.03 [+0.01] #            OK  epoll_busy_poll.test_set_and_get_valid
# 0.03 [+0.00] ok 4 epoll_busy_poll.test_set_and_get_valid
# 0.03 [+0.00] #  RUN           epoll_busy_poll.test_invalid_ioctl ...
# 0.04 [+0.01] #            OK  epoll_busy_poll.test_invalid_ioctl
# 0.04 [+0.00] ok 5 epoll_busy_poll.test_invalid_ioctl
# 0.05 [+0.00] # PASSED: 5 / 5 tests passed.
# 0.05 [+0.00] # Totals: pass:5 fail:0 xfail:0 xpass:0 skip:0 error:0
ok 1 selftests: net: epoll_busy_poll
make[1]: Leaving directory '/home/virtme/testing-3/tools/testing/selftests/net'
make: Leaving directory '/home/virtme/testing-3/tools/testing/selftests'
xx__-> echo $?
0
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff8880023b05a8 (size 8):
  comm "tap", pid 10576, jiffies 4299142871
  hex dump (first 8 bytes):
    00 00 00 00 00 00 00 00                          ........
  backtrace (crc 0):
    __kmalloc_cache_noprof+0x2df/0x390
    tun_vnet_ioctl_sethash+0xbf/0x3a0
    tap_ioctl+0x6f2/0xc10
    __x64_sys_ioctl+0x11f/0x180
    do_syscall_64+0xc1/0x1d0
    entry_SYSCALL_64_after_hwframe+0x77/0x7f
xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak

DETECTED CRASH, lowering timeout
unreferenced object 0xffff8880023b05a8 (size 8):
  comm "tap", pid 10576, jiffies 4299142871
  hex dump (first 8 bytes):
    00 00 00 00 00 00 00 00                          ........
  backtrace (crc 0):
    __kmalloc_cache_noprof+0x2df/0x390
    tun_vnet_ioctl_sethash+0xbf/0x3a0
    tap_ioctl+0x6f2/0xc10
    __x64_sys_ioctl+0x11f/0x180
    do_syscall_64+0xc1/0x1d0
    entry_SYSCALL_64_after_hwframe+0x77/0x7f
xx__->