netlink: 96 bytes leftover after parsing attributes in process `syz-executor.1'.
IPVS: ftp: loaded support on port[0] = 21
==================================================================
BUG: KASAN: use-after-free in trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline]
BUG: KASAN: use-after-free in perf_trace_lock_acquire+0x402/0x530 include/trace/events/lock.h:13
Read of size 8 at addr ffff8880a986c0f8 by task kworker/1:4/5195

CPU: 1 PID: 5195 Comm: kworker/1:4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
Workqueue: events sco_sock_timeout
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433
 trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline]
 perf_trace_lock_acquire+0x402/0x530 include/trace/events/lock.h:13
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x298/0x3c0 kernel/locking/lockdep.c:3907
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 sco_sock_timeout+0x7b/0x1b0 net/bluetooth/sco.c:95
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Allocated by task 21879:
 __do_kmalloc mm/slab.c:3727 [inline]
 __kmalloc+0x15a/0x3c0 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 sk_prot_alloc+0x1e2/0x2d0 net/core/sock.c:1483
 sk_alloc+0x36/0xec0 net/core/sock.c:1537
 __netlink_create+0x63/0x270 net/netlink/af_netlink.c:648
 __netlink_kernel_create+0x110/0x850 net/netlink/af_netlink.c:2043
 netlink_kernel_create include/linux/netlink.h:60 [inline]
 diag_net_init+0xbc/0x140 net/core/sock_diag.c:316
 ops_init+0xb3/0x410 net/core/net_namespace.c:129
 setup_net+0x2c2/0x720 net/core/net_namespace.c:316
 copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439
 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107
 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:206
 ksys_unshare+0x36c/0x9a0 kernel/fork.c:2542
 __do_sys_unshare kernel/fork.c:2610 [inline]
 __se_sys_unshare kernel/fork.c:2608 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:2608
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8148:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 sk_prot_free net/core/sock.c:1520 [inline]
 __sk_destruct+0x684/0x8a0 net/core/sock.c:1602
 sk_destruct net/core/sock.c:1617 [inline]
 __sk_free+0x165/0x3b0 net/core/sock.c:1628
 sk_free+0x3b/0x50 net/core/sock.c:1639
 deferred_put_nlk_sk+0x10d/0x280 net/netlink/af_netlink.c:748
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0x8ff/0x18b0 kernel/rcu/tree.c:2881
 __do_softirq+0x265/0x980 kernel/softirq.c:292

The buggy address belongs to the object at ffff8880a986c040
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 184 bytes inside of
 2048-byte region [ffff8880a986c040, ffff8880a986c840)
The buggy address belongs to the page:
page:ffffea0002a61b00 count:1 mapcount:0 mapping:ffff88813bff0c40 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea0000a2c288 ffffea0002524588 ffff88813bff0c40
raw: 0000000000000000 ffff8880a986c040 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a986bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880a986c000: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff8880a986c080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff8880a986c100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880a986c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================