BUG: memory leak unreferenced object 0xffff88812536a080 (size 32): comm "syz-executor.5", pid 7249, jiffies 4294941941 (age 9.740s) 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: [<000000000579d95c>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<000000000579d95c>] slab_post_alloc_hook mm/slab.h:586 [inline] [<000000000579d95c>] slab_alloc mm/slab.c:3319 [inline] [<000000000579d95c>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3548 [<00000000ada9a7a4>] kmalloc include/linux/slab.h:556 [inline] [<00000000ada9a7a4>] kzalloc include/linux/slab.h:690 [inline] [<00000000ada9a7a4>] net_alloc net/core/net_namespace.c:416 [inline] [<00000000ada9a7a4>] copy_net_ns+0xb2/0x220 net/core/net_namespace.c:463 [<000000009dfae2d7>] create_new_namespaces+0x141/0x2a0 kernel/nsproxy.c:103 [<00000000eb92fa49>] unshare_nsproxy_namespaces+0x7f/0x100 kernel/nsproxy.c:202 [<0000000075842c6d>] ksys_unshare+0x237/0x490 kernel/fork.c:2827 [<00000000baf8ee50>] __do_sys_unshare kernel/fork.c:2895 [inline] [<00000000baf8ee50>] __se_sys_unshare kernel/fork.c:2893 [inline] [<00000000baf8ee50>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:2893 [<0000000084d733b3>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290 [<00000000b9ec8fcb>] entry_SYSCALL_64_after_hwframe+0x44/0xa9