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BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:252 [inline]
BUG: KASAN: use-after-free in list_empty include/linux/list.h:282 [inline]
BUG: KASAN: use-after-free in waitqueue_active include/linux/wait.h:127 [inline]
BUG: KASAN: use-after-free in wq_has_sleeper include/linux/wait.h:161 [inline]
BUG: KASAN: use-after-free in skwq_has_sleeper include/net/sock.h:2143 [inline]
BUG: KASAN: use-after-free in sock_def_write_space+0x613/0x640 net/core/sock.c:2924
Read of size 8 at addr ffff888086762080 by task ksoftirqd/0/9

CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-syzkaller #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+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 __read_once_size include/linux/compiler.h:252 [inline]
 list_empty include/linux/list.h:282 [inline]
 waitqueue_active include/linux/wait.h:127 [inline]
 wq_has_sleeper include/linux/wait.h:161 [inline]
 skwq_has_sleeper include/net/sock.h:2143 [inline]
 sock_def_write_space+0x613/0x640 net/core/sock.c:2924
 sock_wfree+0x1cc/0x240 net/core/sock.c:2058
 skb_release_head_state+0xe2/0x250 net/core/skbuff.c:651
 skb_release_all+0x11/0x60 net/core/skbuff.c:662
 _kfree_skb_defer net/core/skbuff.c:872 [inline]
 napi_consume_skb+0x192/0x5c0 net/core/skbuff.c:917
 free_old_xmit_skbs+0xd6/0x230 drivers/net/virtio_net.c:1389
 virtnet_poll_tx+0x1fb/0x380 drivers/net/virtio_net.c:1516
 napi_poll net/core/dev.c:6671 [inline]
 net_rx_action+0x4c2/0x1070 net/core/dev.c:6739
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:604 [inline]
 run_ksoftirqd+0x89/0x100 kernel/softirq.c:596
 smpboot_thread_fn+0x653/0x9e0 kernel/smpboot.c:165
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351

Allocated by task 10307:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc mm/kasan/common.c:494 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x11b/0x740 mm/slab.c:3484
 sock_alloc_inode+0x18/0x1c0 net/socket.c:253
 alloc_inode+0x61/0x1e0 fs/inode.c:232
 new_inode_pseudo+0x14/0xe0 fs/inode.c:928
 sock_alloc+0x3c/0x260 net/socket.c:573
 __sock_create+0xba/0x730 net/socket.c:1392
 sock_create net/socket.c:1479 [inline]
 __sys_socket+0xef/0x200 net/socket.c:1521
 __do_sys_socket net/socket.c:1530 [inline]
 __se_sys_socket net/socket.c:1528 [inline]
 __x64_sys_socket+0x6f/0xb0 net/socket.c:1528
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

Freed by task 7149:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 kasan_set_free_info mm/kasan/common.c:316 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:455
 __cache_free mm/slab.c:3426 [inline]
 kmem_cache_free+0x7f/0x320 mm/slab.c:3694
 i_callback+0x3f/0x70 fs/inode.c:221
 rcu_do_batch kernel/rcu/tree.c:2396 [inline]
 rcu_core+0x59f/0x1370 kernel/rcu/tree.c:2623
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292

The buggy address belongs to the object at ffff888086762000
 which belongs to the cache sock_inode_cache of size 1216
The buggy address is located 128 bytes inside of
 1216-byte region [ffff888086762000, ffff8880867624c0)
The buggy address belongs to the page:
page:ffffea000219d880 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888086762ffd
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea000219ee48 ffffea00012b5108 ffff88821b780540
raw: ffff888086762ffd ffff888086762000 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888086761f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888086762000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888086762080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888086762100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888086762180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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