==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xe8/0x110 lib/list_debug.c:62
Read of size 8 at addr ffff888077d114d0 by task syz-executor.5/13411

CPU: 0 PID: 13411 Comm: syz-executor.5 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:317 [inline]
 print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
 __list_del_entry_valid+0xe8/0x110 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:134 [inline]
 list_del include/linux/list.h:148 [inline]
 klist_release+0x66/0x480 lib/klist.c:189
 kref_put include/linux/kref.h:65 [inline]
 klist_dec_and_del lib/klist.c:206 [inline]
 klist_put+0x151/0x1d0 lib/klist.c:217
 device_del+0x46d/0xc80 drivers/base/core.c:3699
 hci_conn_del_sysfs+0xdc/0x180 net/bluetooth/hci_sysfs.c:78
 hci_conn_cleanup+0x315/0x7b0 net/bluetooth/hci_conn.c:152
 hci_conn_del+0x29b/0x790 net/bluetooth/hci_conn.c:1086
 hci_conn_hash_flush+0x197/0x260 net/bluetooth/hci_conn.c:2431
 hci_dev_close_sync+0x5c4/0x1200 net/bluetooth/hci_sync.c:4737
 hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:554
 hci_rfkill_set_block+0x15d/0x1c0 net/bluetooth/hci_core.c:947
 rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:345
 rfkill_fop_write+0x2c3/0x570 net/rfkill/core.c:1286
 do_loop_readv_writev fs/read_write.c:753 [inline]
 do_loop_readv_writev fs/read_write.c:737 [inline]
 do_iter_write+0x4ef/0x700 fs/read_write.c:857
 vfs_writev+0x1aa/0x630 fs/read_write.c:928
 do_writev+0x279/0x2f0 fs/read_write.c:971
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe35b289279
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe35c30b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fe35b39bf80 RCX: 00007fe35b289279
RDX: 0000000000000002 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007fe35b2e32e9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1b7b3d4f R14: 00007fe35c30b300 R15: 0000000000022000
 </TASK>

Allocated by task 4951:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:437 [inline]
 ____kasan_kmalloc mm/kasan/common.c:516 [inline]
 ____kasan_kmalloc mm/kasan/common.c:475 [inline]
 __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525
 kasan_kmalloc include/linux/kasan.h:234 [inline]
 __do_kmalloc_node mm/slab_common.c:930 [inline]
 __kmalloc_node_track_caller+0x55/0xc0 mm/slab_common.c:950
 kmalloc_reserve net/core/skbuff.c:358 [inline]
 __alloc_skb+0xd9/0x2f0 net/core/skbuff.c:430
 alloc_skb include/linux/skbuff.h:1258 [inline]
 ndisc_alloc_skb+0x134/0x320 net/ipv6/ndisc.c:421
 ndisc_send_rs+0x37f/0x6f0 net/ipv6/ndisc.c:702
 addrconf_rs_timer+0x3ed/0x820 net/ipv6/addrconf.c:3927
 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571

Freed by task 21:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:45
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:367 [inline]
 ____kasan_slab_free+0x166/0x1c0 mm/kasan/common.c:329
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1651 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1677
 slab_free mm/slub.c:3580 [inline]
 __kmem_cache_free+0xab/0x3b0 mm/slub.c:3593
 skb_free_head+0xac/0x110 net/core/skbuff.c:658
 skb_release_data+0x5f1/0x870 net/core/skbuff.c:687
 skb_release_all net/core/skbuff.c:752 [inline]
 __kfree_skb net/core/skbuff.c:766 [inline]
 kfree_skb_reason+0x14e/0x410 net/core/skbuff.c:789
 kfree_skb include/linux/skbuff.h:1207 [inline]
 ip6_mc_input+0x9dd/0xed0 net/ipv6/ip6_input.c:590
 dst_input include/net/dst.h:461 [inline]
 ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 NF_HOOK include/linux/netfilter.h:296 [inline]
 ipv6_rcv+0x24c/0x380 net/ipv6/ip6_input.c:309
 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5485
 __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5599
 process_backlog+0x3a0/0x7c0 net/core/dev.c:5927
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6689
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571

The buggy address belongs to the object at ffff888077d11400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 208 bytes inside of
 512-byte region [ffff888077d11400, ffff888077d11600)

The buggy address belongs to the physical page:
page:ffffea0001df4400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x77d10
head:ffffea0001df4400 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001d8b700 dead000000000002 ffff888011841c80
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 21, tgid 21 (ksoftirqd/1), ts 83351389035, free_ts 72876977106
 prep_new_page mm/page_alloc.c:2534 [inline]
 get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4284
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5542
 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2280
 alloc_slab_page mm/slub.c:1721 [inline]
 allocate_slab+0x228/0x370 mm/slub.c:1866
 new_slab mm/slub.c:1919 [inline]
 ___slab_alloc+0xad0/0x1440 mm/slub.c:3100
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3198
 slab_alloc_node mm/slub.c:3283 [inline]
 __kmem_cache_alloc_node+0x18a/0x3d0 mm/slub.c:3356
 __do_kmalloc_node mm/slab_common.c:929 [inline]
 __kmalloc_node_track_caller+0x45/0xc0 mm/slab_common.c:950
 kmalloc_reserve net/core/skbuff.c:358 [inline]
 __alloc_skb+0xd9/0x2f0 net/core/skbuff.c:430
 __napi_alloc_skb+0x93/0x340 net/core/skbuff.c:571
 napi_alloc_skb include/linux/skbuff.h:3187 [inline]
 page_to_skb+0x17d/0xc10 drivers/net/virtio_net.c:496
 receive_mergeable drivers/net/virtio_net.c:1119 [inline]
 receive_buf+0xe0a/0x5560 drivers/net/virtio_net.c:1258
 virtnet_receive drivers/net/virtio_net.c:1553 [inline]
 virtnet_poll+0x708/0x1310 drivers/net/virtio_net.c:1671
 __napi_poll+0xb3/0x6d0 net/core/dev.c:6511
 napi_poll net/core/dev.c:6578 [inline]
 net_rx_action+0x9c1/0xd90 net/core/dev.c:6689
 __do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1451 [inline]
 free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1501
 free_unref_page_prepare mm/page_alloc.c:3382 [inline]
 free_unref_page+0x19/0x4d0 mm/page_alloc.c:3478
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:447
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:737 [inline]
 slab_alloc_node mm/slub.c:3317 [inline]
 kmem_cache_alloc_node+0x2ff/0x400 mm/slub.c:3362
 __alloc_skb+0x210/0x2f0 net/core/skbuff.c:418
 alloc_skb_fclone include/linux/skbuff.h:1308 [inline]
 tcp_stream_alloc_skb+0x38/0x580 net/ipv4/tcp.c:861
 tcp_sendmsg_locked+0xc36/0x2f80 net/ipv4/tcp.c:1325
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1483
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:734
 sock_write_iter+0x291/0x3d0 net/socket.c:1108
 call_write_iter include/linux/fs.h:2188 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x9e9/0xdd0 fs/read_write.c:578
 ksys_write+0x1e8/0x250 fs/read_write.c:631
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff888077d11380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888077d11400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888077d11480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888077d11500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888077d11580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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