==================================================================
BUG: KASAN: use-after-free in cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline]
BUG: KASAN: use-after-free in cleancache_invalidate_page include/linux/cleancache.h:110 [inline]
BUG: KASAN: use-after-free in unaccount_page_cache_page+0x99f/0xa80 mm/filemap.c:175
Read of size 4 at addr ffff888101dc8470 by task syz-executor.4/24849

CPU: 0 PID: 24849 Comm: syz-executor.4 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:452
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline]
 cleancache_invalidate_page include/linux/cleancache.h:110 [inline]
 unaccount_page_cache_page+0x99f/0xa80 mm/filemap.c:175
 __delete_from_page_cache+0xd0/0x5d0 mm/filemap.c:243
 __remove_mapping+0x567/0x690 mm/vmscan.c:978
 shrink_page_list+0x1f38/0x4c60 mm/vmscan.c:1491
 shrink_inactive_list+0x591/0x1150 mm/vmscan.c:2048
 shrink_list mm/vmscan.c:2267 [inline]
 shrink_lruvec+0xced/0x3860 mm/vmscan.c:5434
 shrink_node_memcgs mm/vmscan.c:5621 [inline]
 shrink_node+0xdf3/0x1fb0 mm/vmscan.c:5651
 shrink_zones mm/vmscan.c:5854 [inline]
 do_try_to_free_pages+0x67e/0x15e0 mm/vmscan.c:5912
 try_to_free_mem_cgroup_pages+0x369/0x830 mm/vmscan.c:6230
 try_charge+0x4b8/0x15f0 mm/memcontrol.c:2742
 __mem_cgroup_charge+0x147/0x6e0 mm/memcontrol.c:6847
 mem_cgroup_charge include/linux/memcontrol.h:458 [inline]
 __add_to_page_cache_locked+0x29d/0xba0 mm/filemap.c:854
 add_to_page_cache_lru+0x117/0x2c0 mm/filemap.c:948
 pagecache_get_page+0x71e/0x950 mm/filemap.c:1859
 grab_cache_page_write_begin+0x5d/0xa0 mm/filemap.c:3456
 ext4_da_write_begin+0x587/0xf60 fs/ext4/inode.c:3055
 generic_perform_write+0x2cd/0x570 mm/filemap.c:3506
 ext4_buffered_write_iter+0x482/0x610 fs/ext4/file.c:271
 ext4_file_write_iter+0x193/0x1c80 fs/ext4/file.c:685
 __kernel_write+0x5ab/0x9d0 fs/read_write.c:550
 dump_emit+0x261/0x3a0 fs/coredump.c:849
 dump_user_range+0x71/0x1a0 fs/coredump.c:902
 elf_core_dump+0x33bd/0x3c10 fs/binfmt_elf.c:2287
 do_coredump+0x1eb8/0x2d60 fs/coredump.c:811
 get_signal+0x102c/0x1410 kernel/signal.c:2768
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x5a/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 exc_general_protection+0x415/0x490 arch/x86/kernel/traps.c:557
 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:565
RIP: 0033:0x7fef3e345af1
Code: c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200003a0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fef3e465120 RCX: 00007fef3e345ae9
RDX: 0000000020000240 RSI: 00000000200003a0 RDI: 0000000004000000
RBP: 00007fef3e39147a R08: 0000000020000400 R09: 0000000020000400
R10: 0000000020000280 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007fef3e465120 R15: 00007ffe69797b28

Allocated by task 20413:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:509
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x1aa/0x330 mm/slub.c:4033
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 __register_sysctl_table+0xea/0x1240 fs/proc/proc_sysctl.c:1321
 register_net_sysctl+0x2c/0x40 net/sysctl_net.c:121
 __addrconf_sysctl_register+0x28f/0x3e0 net/ipv6/addrconf.c:7008
 addrconf_init_net+0x39e/0x5c0 net/ipv6/addrconf.c:7123
 ops_init+0x1cf/0x4a0 net/core/net_namespace.c:141
 setup_net+0x367/0xbf0 net/core/net_namespace.c:342
 copy_net_ns+0x331/0x520 net/core/net_namespace.c:483
 create_new_namespaces+0x410/0x660 kernel/nsproxy.c:110
 copy_namespaces+0x1d1/0x220 kernel/nsproxy.c:179
 copy_process+0x11a0/0x3340 kernel/fork.c:2178
 kernel_clone+0x21e/0x9e0 kernel/fork.c:2566
 __do_sys_clone kernel/fork.c:2692 [inline]
 __se_sys_clone kernel/fork.c:2676 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2676
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6

Freed by task 23952:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kmem_cache_free_bulk+0x29f/0x590 mm/slub.c:3336
 kfree_bulk include/linux/slab.h:409 [inline]
 kfree_rcu_work+0x2a4/0x680 kernel/rcu/tree.c:3237
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 kvfree_call_rcu+0x136/0x650 kernel/rcu/tree.c:3534
 drop_sysctl_table+0x311/0x450 fs/proc/proc_sysctl.c:1682
 unregister_sysctl_table+0x76/0x120 fs/proc/proc_sysctl.c:1720
 unregister_net_sysctl_table+0x15/0x20 net/sysctl_net.c:127
 __addrconf_sysctl_unregister net/ipv6/addrconf.c:7037 [inline]
 addrconf_exit_net+0xa1/0x200 net/ipv6/addrconf.c:7144
 ops_exit_list net/core/net_namespace.c:182 [inline]
 cleanup_net+0x66c/0xcb0 net/core/net_namespace.c:606
 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301
 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447
 kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299

The buggy address belongs to the object at ffff888101dc8000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1136 bytes inside of
 2048-byte region [ffff888101dc8000, ffff888101dc8800)
The buggy address belongs to the page:
page:ffffea0004077200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x101dc8
head:ffffea0004077200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042d80
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 20413, ts 1022308605097, free_ts 1022290537552
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x166/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5346
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x80/0x400 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x302/0x4b0 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 __kmalloc+0x204/0x330 mm/slub.c:4029
 kmalloc include/linux/slab.h:557 [inline]
 sk_prot_alloc+0xbe/0x370 net/core/sock.c:1703
 sk_alloc+0x38/0x4d0 net/core/sock.c:1761
 __netlink_create net/netlink/af_netlink.c:639 [inline]
 __netlink_kernel_create+0x1c4/0x910 net/netlink/af_netlink.c:2041
 netlink_kernel_create include/linux/netlink.h:60 [inline]
 xfrm_user_net_init+0x9e/0x150 net/xfrm/xfrm_user.c:3458
 ops_init+0x1cf/0x4a0 net/core/net_namespace.c:141
 setup_net+0x367/0xbf0 net/core/net_namespace.c:342
 copy_net_ns+0x331/0x520 net/core/net_namespace.c:483
 create_new_namespaces+0x410/0x660 kernel/nsproxy.c:110
 copy_namespaces+0x1d1/0x220 kernel/nsproxy.c:179
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x82c/0x850 mm/page_alloc.c:1629
 free_compound_page+0x73/0x90 mm/page_alloc.c:710
 destroy_compound_page include/linux/mm.h:959 [inline]
 __put_compound_page+0x73/0xb0 mm/swap.c:117
 __put_page+0xc0/0xe0 mm/swap.c:133
 put_page include/linux/mm.h:1257 [inline]
 __skb_frag_unref include/linux/skbuff.h:3085 [inline]
 skb_release_data+0x240/0x6f0 net/core/skbuff.c:619
 skb_release_all net/core/skbuff.c:679 [inline]
 __kfree_skb+0x50/0x70 net/core/skbuff.c:693
 sk_wmem_free_skb include/net/sock.h:1596 [inline]
 tcp_rtx_queue_unlink_and_free+0x203/0x750 include/net/tcp.h:1874
 tcp_clean_rtx_queue net/ipv4/tcp_input.c:3306 [inline]
 tcp_ack+0x2305/0x6660 net/ipv4/tcp_input.c:3859
 tcp_rcv_established+0x74d/0x1a90 net/ipv4/tcp_input.c:5935
 tcp_v4_do_rcv+0x3d7/0x7d0 net/ipv4/tcp_ipv4.c:1689
 tcp_v4_rcv+0x23a8/0x2930 net/ipv4/tcp_ipv4.c:2075
 ip_protocol_deliver_rcu+0x2f4/0x650 net/ipv4/ip_input.c:204
 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ip_local_deliver+0x2c6/0x590 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:443 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:557 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:607 [inline]
 ip_sublist_rcv+0x77f/0x930 net/ipv4/ip_input.c:615
 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:650
 __netif_receive_skb_list_ptype net/core/dev.c:5417 [inline]
 __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5465

Memory state around the buggy address:
 ffff888101dc8300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888101dc8380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888101dc8400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888101dc8480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888101dc8500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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