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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+0x609/0x630 net/core/sock.c:2926
Read of size 8 at addr ffff88805ad24b00 by task systemd-udevd/24400

CPU: 1 PID: 24400 Comm: systemd-udevd Not tainted 5.8.0-rc6-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+0x18f/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xae/0x436 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 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+0x609/0x630 net/core/sock.c:2926
 sock_wfree+0x1cc/0x240 net/core/sock.c:2060
 skb_release_head_state+0x9f/0x250 net/core/skbuff.c:651
 skb_release_all net/core/skbuff.c:662 [inline]
 _kfree_skb_defer net/core/skbuff.c:872 [inline]
 napi_consume_skb net/core/skbuff.c:917 [inline]
 napi_consume_skb+0x12e/0x370 net/core/skbuff.c:894
 free_old_xmit_skbs+0xd5/0x230 drivers/net/virtio_net.c:1389
 virtnet_poll_tx+0x1e9/0x370 drivers/net/virtio_net.c:1516
 napi_poll net/core/dev.c:6684 [inline]
 net_rx_action+0x4a1/0xe60 net/core/dev.c:6752
 __do_softirq+0x34c/0xa60 kernel/softirq.c:292
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x111/0x170 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:387 [inline]
 __irq_exit_rcu kernel/softirq.c:417 [inline]
 irq_exit_rcu+0x229/0x270 kernel/softirq.c:429
 common_interrupt+0xa1/0x220 arch/x86/kernel/irq.c:239
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:576
RIP: 0010:debug_lockdep_rcu_enabled+0x1d/0x30 kernel/rcu/update.c:289
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc 8b 05 4a f5 c6 02 85 c0 74 21 8b 05 94 26 c7 02 85 c0 74 17 65 48 8b 04 25 00 ff 01 00 <8b> 80 cc 08 00 00 85 c0 0f 94 c0 0f b6 c0 c3 cc cc cc cc 53 48 c7
RSP: 0000:ffffc90001717c40 EFLAGS: 00000202
RAX: ffff88806bba0480 RBX: dffffc0000000000 RCX: ffffffff8193d411
RDX: 1ffff110148fa777 RSI: ffffffff8193d43d RDI: ffff8880a47d3bb8
RBP: ffffea0002ffc040 R08: 0000000000000001 R09: ffffea0002ffc077
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000099
R13: ffffea0002ffc048 R14: ffff8880a47d2568 R15: ffffea0002ffc040
 xa_entry include/linux/xarray.h:1180 [inline]
 xas_reload include/linux/xarray.h:1527 [inline]
 filemap_map_pages+0x409/0x1280 mm/filemap.c:2630
 do_fault_around mm/memory.c:3818 [inline]
 do_read_fault mm/memory.c:3852 [inline]
 do_fault mm/memory.c:3985 [inline]
 handle_pte_fault mm/memory.c:4225 [inline]
 __handle_mm_fault mm/memory.c:4357 [inline]
 handle_mm_fault+0x39b7/0x43f0 mm/memory.c:4394
 do_user_addr_fault+0x5a2/0xd00 arch/x86/mm/fault.c:1295
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xab/0x170 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0033:0x7ff608a85520
Code: Bad RIP value.
RSP: 002b:00007ffd94fe6128 EFLAGS: 00010206
RAX: 000055b76f39ed20 RBX: 000055b76f39e9a0 RCX: 0000000000000014
RDX: 000055b76f647eb0 RSI: 000055b76f37ad05 RDI: 000055b76f63b1a0
RBP: 0000000000000003 R08: 6eff9c2d136abd8c R09: 0000000000000048
R10: 000055b76f37ad0c R11: 0000000000000206 R12: 0000000000000000
R13: 000055b76f72c360 R14: 00000000000001e0 R15: 000055b76f647eb0

Allocated by task 24375:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x12c/0x3b0 mm/slab.c:3484
 sock_alloc_inode+0x18/0x1c0 net/socket.c:253
 alloc_inode+0x61/0x230 fs/inode.c:232
 new_inode_pseudo+0x14/0xe0 fs/inode.c:928
 sock_alloc+0x3c/0x260 net/socket.c:573
 __sock_create+0xb9/0x740 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+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 24400:
 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+0xf5/0x140 mm/kasan/common.c:455
 __cache_free mm/slab.c:3426 [inline]
 kmem_cache_free+0x7f/0x310 mm/slab.c:3694
 i_callback+0x3f/0x70 fs/inode.c:221
 rcu_do_batch kernel/rcu/tree.c:2414 [inline]
 rcu_core+0x5c7/0x1160 kernel/rcu/tree.c:2641
 __do_softirq+0x34c/0xa60 kernel/softirq.c:292

The buggy address belongs to the object at ffff88805ad24a80
 which belongs to the cache sock_inode_cache of size 1216
The buggy address is located 128 bytes inside of
 1216-byte region [ffff88805ad24a80, ffff88805ad24f40)
The buggy address belongs to the page:
page:ffffea00016b4900 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88805ad24ffd
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea000153a608 ffffea0001303608 ffff88821b77f700
raw: ffff88805ad24ffd ffff88805ad24000 0000000100000003 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88805ad24a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88805ad24a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88805ad24b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88805ad24b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805ad24c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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