======================================
| 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 0xffff8880021c0c20 (size 32):
comm "softirq", pid 0, jiffies 4294848534
hex dump (first 32 bytes):
78 f6 fc 20 80 88 ff ff 90 76 e9 85 ff ff ff ff  x.. .....v......
28 93 e1 0c 80 88 ff ff cc cc cc cc cc cc cc cc  (...............
backtrace (crc 160cba27):
__kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:4200 mm/slub.c:4357) 
kmem_cache_free (mm/slub.c:2342 mm/slub.c:4646 mm/slub.c:4748) 
inet_twsk_free (net/ipv4/inet_timewait_sock.c:79) 
call_timer_fn (kernel/time/timer.c:1789) 
__run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
run_timer_softirq (kernel/time/timer.c:2446) 
handle_softirqs (kernel/softirq.c:579) 
do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
__local_bh_enable_ip (kernel/softirq.c:407) 
sk_stream_wait_memory (net/core/stream.c:145 (discriminator 17)) 
tcp_sendmsg_locked (net/ipv4/tcp.c:1325) 
tcp_sendmsg (net/ipv4/tcp.c:1367) 
sock_write_iter (net/socket.c:712 net/socket.c:727 net/socket.c:1131) 
vfs_write (fs/read_write.c:591 fs/read_write.c:684) 


Finger prints:
__kmalloc_cache_noprof:kmem_cache_free:inet_twsk_free:call_timer_fn:__run_timers