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BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:199 [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 ffff888051611b00 by task kworker/u4:8/12591

CPU: 1 PID: 12591 Comm: kworker/u4:8 Not tainted 5.7.0-rc7-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:382
 __kasan_report.cold+0x20/0x38 mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 __read_once_size include/linux/compiler.h:199 [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
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x192/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 do_IRQ+0xda/0x270 arch/x86/kernel/irq.c:263
 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:606
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline]
RIP: 0010:kfree+0x1fe/0x2b0 mm/slab.c:3758
Code: 75 6b 48 83 3d 42 52 e3 07 00 0f 85 4e ff ff ff 0f 0b e8 f5 4f c7 ff 48 83 3d 2d 52 e3 07 00 0f 84 b3 00 00 00 48 89 df 57 9d <0f> 1f 44 00 00 5b 5d 41 5c 41 5d c3 65 ff 05 77 b0 50 7e 48 8b 05
RSP: 0018:ffffc900055d7dd0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffffd9
RAX: 0000000000000007 RBX: 0000000000000282 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000282
RBP: ffff8880a1e05800 R08: ffff88809dc005c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880aa000a80
R13: ffffffff81be0c51 R14: ffff888067010c00 R15: ffff8880a1e05800
 __do_execve_file.isra.0+0x13f1/0x2230 fs/exec.c:1910
 do_execveat_common fs/exec.c:1927 [inline]
 do_execve+0x2e/0x40 fs/exec.c:1944
 call_usermodehelper_exec_async+0x588/0x710 kernel/umh.c:112
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351

Allocated by task 12568:
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 __kasan_kmalloc mm/kasan/common.c:495 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468
 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 4117:
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 kasan_set_free_info mm/kasan/common.c:317 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:456
 __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:2206 [inline]
 rcu_core+0x59f/0x1370 kernel/rcu/tree.c:2433
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292

The buggy address belongs to the object at ffff888051611a80
 which belongs to the cache sock_inode_cache of size 1216
The buggy address is located 128 bytes inside of
 1216-byte region [ffff888051611a80, ffff888051611f40)
The buggy address belongs to the page:
page:ffffea0001458440 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888051611ffd
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0001423148 ffffea00014523c8 ffff8880a97bfa80
raw: ffff888051611ffd ffff888051611000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888051611a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888051611a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888051611b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888051611b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888051611c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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