BUG: memory leak unreferenced object 0xffff888110f661a0 (size 32): comm "syz-executor.4", pid 7191, jiffies 4294943135 (age 9.250s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000004b59b94d>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<000000004b59b94d>] slab_post_alloc_hook mm/slab.h:586 [inline] [<000000004b59b94d>] slab_alloc mm/slab.c:3319 [inline] [<000000004b59b94d>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000ce726bd3>] kmalloc include/linux/slab.h:556 [inline] [<00000000ce726bd3>] kzalloc include/linux/slab.h:690 [inline] [<00000000ce726bd3>] net_alloc net/core/net_namespace.c:416 [inline] [<00000000ce726bd3>] copy_net_ns+0xb2/0x220 net/core/net_namespace.c:463 [<00000000cf9d7500>] create_new_namespaces+0x141/0x2a0 kernel/nsproxy.c:103 [<00000000875ef589>] unshare_nsproxy_namespaces+0x7f/0x100 kernel/nsproxy.c:202 [<00000000c507a561>] ksys_unshare+0x237/0x490 kernel/fork.c:2827 [<00000000e646b9b7>] __do_sys_unshare kernel/fork.c:2895 [inline] [<00000000e646b9b7>] __se_sys_unshare kernel/fork.c:2893 [inline] [<00000000e646b9b7>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:2893 [<00000000e555aa54>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290 [<00000000b51cfce1>] entry_SYSCALL_64_after_hwframe+0x44/0xa9