e list of known hosts. executing program BUG: memory leak unreferenced object 0xffff888116b64c00 (size 256): comm "softirq", pid 0, jiffies 4294943159 (age 8.080s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de ................ 00 40 ff 21 81 88 ff ff 00 00 00 00 00 00 00 00 .@.!............ backtrace: [<0000000054ecdd8b>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<0000000054ecdd8b>] slab_post_alloc_hook mm/slab.h:439 [inline] [<0000000054ecdd8b>] slab_alloc mm/slab.c:3326 [inline] [<0000000054ecdd8b>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553 [<0000000006e893a6>] kmalloc include/linux/slab.h:547 [inline] [<0000000006e893a6>] kzalloc include/linux/slab.h:742 [inline] [<0000000006e893a6>] lapb_create_cb net/lapb/lapb_iface.c:121 [inline] [<0000000006e893a6>] lapb_register+0x90/0x1c0 net/lapb/lapb_iface.c:158 [<00000000ec69fdae>] x25_asy_open drivers/net/wan/x25_asy.c:483 [inline] [<00000000ec69fdae>] x25_asy_open_tty+0x26b/0x2f6 drivers/net/wan/x25_asy.c:573 [<000000001954757b>] tty_ldisc_open.isra.0+0x40/0x70 drivers/tty/tty_ldisc.c:469 [<00000000ee58ba64>] tty_set_ldisc+0x149/0x240 drivers/tty/tty_ldisc.c:596 [<00000000b0635a7f>] tiocsetd drivers/tty/tty_io.c:2332 [inline] [<00000000b0635a7f>] tty_ioctl+0x366/0xa30 drivers/tty/tty_io.c:2592 [<000000009cb3512b>] vfs_ioctl fs/ioctl.c:46 [inline] [<000000009cb3512b>] file_ioctl fs/ioctl.c:509 [inline] [<000000009cb3512b>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696 [<00000000906f16c8>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713 [<000000003b4622c6>] __do_sys_ioctl fs/ioctl.c:720 [inline] [<000000003b4622c6>] __se_sys_ioctl fs/ioctl.c:718 [inline] [<000000003b4622c6>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718 [<000000009cfe286e>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<000000009ec5d7da>] entry_SYSCALL_64_after_hwframe+0x44/0xa9