==================================================================
BUG: KASAN: use-after-free in __read_once_size /./include/linux/compiler.h:194 [inline]
BUG: KASAN: use-after-free in list_empty /./include/linux/list.h:268 [inline]
BUG: KASAN: use-after-free in waitqueue_active /./include/linux/wait.h:126 [inline]
BUG: KASAN: use-after-free in wq_has_sleeper /./include/linux/wait.h:147 [inline]
BUG: KASAN: use-after-free in skwq_has_sleeper /./include/net/sock.h:2088 [inline]
BUG: KASAN: use-after-free in sock_def_write_space+0x651/0x680 /net/core/sock.c:2794
Read of size 8 at addr ffff888085c685b8 by task ps/6556

CPU: 0 PID: 6556 Comm: ps Not tainted 5.2.0+ #67
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack /lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 /lib/dump_stack.c:113
 print_address_description.cold+0xd4/0x306 /mm/kasan/report.c:351
 __kasan_report.cold+0x1b/0x36 /mm/kasan/report.c:482
 kasan_report+0x12/0x17 /mm/kasan/common.c:612
 __asan_report_load8_noabort+0x14/0x20 /mm/kasan/generic_report.c:132
 __read_once_size /./include/linux/compiler.h:194 [inline]
 list_empty /./include/linux/list.h:268 [inline]
 waitqueue_active /./include/linux/wait.h:126 [inline]
 wq_has_sleeper /./include/linux/wait.h:147 [inline]
 skwq_has_sleeper /./include/net/sock.h:2088 [inline]
 sock_def_write_space+0x651/0x680 /net/core/sock.c:2794
 sock_wfree+0x154/0x190 /net/core/sock.c:1950
 skb_release_head_state+0xeb/0x250 /net/core/skbuff.c:652
 skb_release_all+0x16/0x60 /net/core/skbuff.c:663
 _kfree_skb_defer /net/core/skbuff.c:873 [inline]
 napi_consume_skb+0x19d/0x580 /net/core/skbuff.c:918
 free_old_xmit_skbs+0xee/0x250 /drivers/net/virtio_net.c:1366
 virtnet_poll_tx+0x214/0x3a0 /drivers/net/virtio_net.c:1493
 napi_poll /net/core/dev.c:6347 [inline]
 net_rx_action+0x4d6/0x1030 /net/core/dev.c:6413
 __do_softirq+0x262/0x98c /kernel/softirq.c:292
 invoke_softirq /kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 /kernel/softirq.c:413
 exiting_irq /./arch/x86/include/asm/apic.h:537 [inline]
 do_IRQ+0x12c/0x200 /arch/x86/kernel/irq.c:259
 common_interrupt+0xf/0xf /arch/x86/entry/entry_64.S:605
 </IRQ>
RIP: 0010:arch_local_irq_restore /./arch/x86/include/asm/paravirt.h:767 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore /./include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0 /kernel/locking/spinlock.c:191
Code: 48 c7 c0 10 f0 d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 52 d6 99 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 9c 93 15 fa 65 8b 05 ad e3 c8 78
RSP: 0018:ffff888097cf7cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd6
RAX: 1ffffffff11a5e02 RBX: 0000000000000286 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286
RBP: ffff888097cf7cc0 R08: 1ffffffff14a7750 R09: fffffbfff14a7751
R10: fffffbfff14a7750 R11: ffffffff8a53ba87 R12: ffff88805efb3ac0
R13: 0000000000000286 R14: 0000000000000001 R15: 0000000000000001
 spin_unlock_irqrestore /./include/linux/spinlock.h:393 [inline]
 __wake_up_common_lock+0xf8/0x150 /kernel/sched/wait.c:125
 __wake_up_sync_key+0x19/0x20 /kernel/sched/wait.c:196
 pipe_release+0x1a0/0x280 /fs/pipe.c:597
 __fput+0x2ff/0x890 /fs/file_table.c:280
 ____fput+0x16/0x20 /fs/file_table.c:313
 task_work_run+0x145/0x1c0 /kernel/task_work.c:113
 tracehook_notify_resume /./include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x316/0x380 /arch/x86/entry/common.c:163
 prepare_exit_to_usermode /arch/x86/entry/common.c:194 [inline]
 syscall_return_slowpath /arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x5a9/0x6a0 /arch/x86/entry/common.c:299
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ffbb19862b0
Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24
RSP: 002b:00007fff0c961d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007ffbb1c3b7a0 RCX: 00007ffbb19862b0
RDX: 00007ffbb1c3cdf0 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000000 R08: 00007ffbb207f700 R09: 00007ffbb207f700
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000001 R14: 0000000000fcd180 R15: 0000000000000000

Allocated by task 6710:
 save_stack+0x23/0x90 /mm/kasan/common.c:69
 set_track /mm/kasan/common.c:77 [inline]
 __kasan_kmalloc /mm/kasan/common.c:487 [inline]
 __kasan_kmalloc.constprop.0+0xcf/0xe0 /mm/kasan/common.c:460
 kasan_slab_alloc+0xf/0x20 /mm/kasan/common.c:495
 slab_post_alloc_hook /mm/slab.h:520 [inline]
 slab_alloc /mm/slab.c:3319 [inline]
 kmem_cache_alloc+0x121/0x710 /mm/slab.c:3483
 sock_alloc_inode+0x1c/0x1d0 /net/socket.c:239
 alloc_inode+0x68/0x1e0 /fs/inode.c:227
 new_inode_pseudo+0x19/0xf0 /fs/inode.c:916
 sock_alloc+0x41/0x270 /net/socket.c:558
 __sock_create+0xc2/0x730 /net/socket.c:1382
 sock_create /net/socket.c:1469 [inline]
 __sys_socket+0x103/0x220 /net/socket.c:1511
 __do_sys_socket /net/socket.c:1520 [inline]
 __se_sys_socket /net/socket.c:1518 [inline]
 __x64_sys_socket+0x73/0xb0 /net/socket.c:1518
 do_syscall_64+0xfd/0x6a0 /arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 6749:
 save_stack+0x23/0x90 /mm/kasan/common.c:69
 set_track /mm/kasan/common.c:77 [inline]
 __kasan_slab_free+0x102/0x150 /mm/kasan/common.c:449
 kasan_slab_free+0xe/0x10 /mm/kasan/common.c:457
 __cache_free /mm/slab.c:3425 [inline]
 kmem_cache_free+0x86/0x320 /mm/slab.c:3693
 sock_free_inode+0x20/0x30 /net/socket.c:260
 i_callback+0x44/0x80 /fs/inode.c:216
 __rcu_reclaim /kernel/rcu/rcu.h:222 [inline]
 rcu_do_batch /kernel/rcu/tree.c:2114 [inline]
 rcu_core+0x67f/0x1580 /kernel/rcu/tree.c:2314
 rcu_core_si+0x9/0x10 /kernel/rcu/tree.c:2323
 __do_softirq+0x262/0x98c /kernel/softirq.c:292

The buggy address belongs to the object at ffff888085c68540
 which belongs to the cache sock_inode_cache(65:syz3) of size 1152
The buggy address is located 120 bytes inside of
 1152-byte region [ffff888085c68540, ffff888085c689c0)
The buggy address belongs to the page:
page:ffffea0002171a00 refcount:1 mapcount:0 mapping:ffff8880a0aef380 index:0xffff888085c68ffd
flags: 0x1fffc0000000200(slab)
raw: 01fffc0000000200 ffffea00028ca288 ffffea000253da08 ffff8880a0aef380
raw: ffff888085c68ffd ffff888085c68040 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888085c68480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888085c68500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff888085c68580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff888085c68600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888085c68680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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