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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 ffff88810c294470 by task syz-executor.5/11946

CPU: 1 PID: 11946 Comm: syz-executor.5 Not tainted 5.10.187-syzkaller-00057-g8a427269c016 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
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:3065
 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+0x55/0x80 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: 0033:0x7f5386566af1
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:00000000200003c0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f5386686120 RCX: 00007f5386566ae9
RDX: 0000000020000200 RSI: 00000000200003c0 RDI: 0000000000a40080
RBP: 00007f53865b247a R08: 0000000020000440 R09: 0000000020000440
R10: 0000000020000400 R11: 0000000000000202 R12: 0000000000000000
R13: 000000000000000b R14: 00007f5386686120 R15: 00007ffdcd786f18

The buggy address belongs to the page:
page:ffffea000430a500 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10c294
flags: 0x4000000000000000()
raw: 4000000000000000 0000000000000000 ffffea000430a508 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
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 11755, ts 640203530712, free_ts 647859917387
 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]
 kernfs_file_read_iter fs/kernfs/file.c:195 [inline]
 kernfs_fop_read_iter+0x15b/0x470 fs/kernfs/file.c:242
 call_read_iter include/linux/fs.h:1970 [inline]
 new_sync_read fs/read_write.c:415 [inline]
 vfs_read+0x999/0xbb0 fs/read_write.c:496
 ksys_read+0x199/0x2c0 fs/read_write.c:634
 __do_sys_read fs/read_write.c:644 [inline]
 __se_sys_read fs/read_write.c:642 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:642
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
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_the_page+0x76/0x370 mm/page_alloc.c:5407
 __free_pages+0x67/0xc0 mm/page_alloc.c:5416
 __free_slab+0xcf/0x190 mm/slub.c:1894
 free_slab mm/slub.c:1909 [inline]
 discard_slab mm/slub.c:1915 [inline]
 unfreeze_partials+0x15e/0x190 mm/slub.c:2410
 put_cpu_partial+0xbf/0x180 mm/slub.c:2446
 __slab_free+0x2c8/0x3a0 mm/slub.c:3095
 do_slab_free mm/slub.c:3191 [inline]
 ___cache_free+0x111/0x130 mm/slub.c:3210
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x47/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x170 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
 slab_alloc_node mm/slub.c:2947 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
 kmem_cache_alloc_node include/linux/slab.h:423 [inline]
 __alloc_skb+0x80/0x510 net/core/skbuff.c:199
 alloc_skb include/linux/skbuff.h:1126 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 inet6_netconf_notify_devconf+0xdd/0x190 net/ipv6/addrconf.c:576

Memory state around the buggy address:
 ffff88810c294300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810c294380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88810c294400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                             ^
 ffff88810c294480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810c294500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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