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BUG: KASAN: use-after-free in __rxrpc_put_peer net/rxrpc/peer_object.c:411 [inline]
BUG: KASAN: use-after-free in rxrpc_put_peer+0xb5/0x2c0 net/rxrpc/peer_object.c:435
Read of size 8 at addr ffff888071ea2498 by task ksoftirqd/1/16

CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.3.0-rc7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113
 print_address_description+0x75/0x5b0 mm/kasan/report.c:351
 __kasan_report+0x14b/0x1c0 mm/kasan/report.c:482
 kasan_report+0x26/0x50 mm/kasan/common.c:618
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:132
 __rxrpc_put_peer net/rxrpc/peer_object.c:411 [inline]
 rxrpc_put_peer+0xb5/0x2c0 net/rxrpc/peer_object.c:435
 rxrpc_rcu_destroy_call+0x56/0x100 net/rxrpc/call_object.c:564
 __rcu_reclaim kernel/rcu/rcu.h:222 [inline]
 rcu_do_batch kernel/rcu/tree.c:2114 [inline]
 rcu_core+0x892/0xf10 kernel/rcu/tree.c:2314
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2323
 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:778
 run_ksoftirqd+0x64/0xf0 kernel/softirq.c:603
 smpboot_thread_fn+0x5b3/0x9a0 kernel/smpboot.c:165
 kthread+0x332/0x350 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Allocated by task 317:
 save_stack mm/kasan/common.c:69 [inline]
 set_track mm/kasan/common.c:77 [inline]
 __kasan_kmalloc+0x11c/0x1b0 mm/kasan/common.c:493
 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:507
 kmem_cache_alloc_trace+0x221/0x2f0 mm/slab.c:3550
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:748 [inline]
 rxrpc_alloc_local net/rxrpc/local_object.c:79 [inline]
 rxrpc_lookup_local+0x708/0x16f0 net/rxrpc/local_object.c:277
 rxrpc_sendmsg+0x493/0x8b0 net/rxrpc/af_rxrpc.c:566
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg net/socket.c:657 [inline]
 ___sys_sendmsg+0x60d/0x910 net/socket.c:2311
 __sys_sendmmsg+0x239/0x470 net/socket.c:2413
 __do_sys_sendmmsg net/socket.c:2442 [inline]
 __se_sys_sendmmsg net/socket.c:2439 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2439
 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 9:
 save_stack mm/kasan/common.c:69 [inline]
 set_track mm/kasan/common.c:77 [inline]
 __kasan_slab_free+0x12a/0x1e0 mm/kasan/common.c:455
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:463
 __cache_free mm/slab.c:3425 [inline]
 kfree+0x115/0x200 mm/slab.c:3756
 rxrpc_local_rcu+0x63/0x80 net/rxrpc/local_object.c:499
 __rcu_reclaim kernel/rcu/rcu.h:222 [inline]
 rcu_do_batch kernel/rcu/tree.c:2114 [inline]
 rcu_core+0x892/0xf10 kernel/rcu/tree.c:2314
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2323
 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:778

The buggy address belongs to the object at ffff888071ea2480
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 24 bytes inside of
 1024-byte region [ffff888071ea2480, ffff888071ea2880)
The buggy address belongs to the page:
page:ffffea0001c7a880 refcount:1 mapcount:0 mapping:ffff8880aa400c40 index:0xffff888071ea2900 compound_mapcount: 0
flags: 0x1fffc0000010200(slab|head)
raw: 01fffc0000010200 ffffea0002394308 ffffea000227e008 ffff8880aa400c40
raw: ffff888071ea2900 ffff888071ea2000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888071ea2380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888071ea2400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888071ea2480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff888071ea2500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888071ea2580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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