==================================================================
BUG: KASAN: slab-use-after-free in __hlist_del include/linux/list.h:982 [inline]
BUG: KASAN: slab-use-after-free in hlist_del_init include/linux/list.h:1008 [inline]
BUG: KASAN: slab-use-after-free in binderfs_evict_inode+0x2ac/0x2b4 drivers/android/binderfs.c:277
Write of size 8 at addr ffff00001794b808 by task syz-executor/3304

CPU: 1 UID: 0 PID: 3304 Comm: syz-executor Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
Call trace:
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xa4/0xf4 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xf4/0x60c mm/kasan/report.c:521
 kasan_report+0xc8/0x108 mm/kasan/report.c:634
 __asan_report_store8_noabort+0x20/0x2c mm/kasan/report_generic.c:386
 __hlist_del include/linux/list.h:982 [inline]
 hlist_del_init include/linux/list.h:1008 [inline]
 binderfs_evict_inode+0x2ac/0x2b4 drivers/android/binderfs.c:277
 evict+0x2c0/0x67c fs/inode.c:810
 iput_final fs/inode.c:1898 [inline]
 iput fs/inode.c:1924 [inline]
 iput+0x3b0/0x6b4 fs/inode.c:1910
 dentry_unlink_inode+0x208/0x46c fs/dcache.c:457
 __dentry_kill+0x150/0x52c fs/dcache.c:660
 shrink_kill fs/dcache.c:1105 [inline]
 shrink_dentry_list+0x114/0x3a4 fs/dcache.c:1132
 shrink_dcache_parent+0x158/0x354 fs/dcache.c:1566
 do_one_tree fs/dcache.c:1595 [inline]
 shrink_dcache_for_umount+0x88/0x304 fs/dcache.c:1612
 generic_shutdown_super+0x60/0x2e8 fs/super.c:620
 kill_anon_super fs/super.c:1237 [inline]
 kill_litter_super+0x68/0xa4 fs/super.c:1247
 binderfs_kill_super+0x38/0x88 drivers/android/binderfs.c:792
 deactivate_locked_super+0x98/0x17c fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xb0/0xd4 fs/super.c:502
 cleanup_mnt+0x198/0x424 fs/namespace.c:1435
 __cleanup_mnt+0x14/0x20 fs/namespace.c:1442
 task_work_run+0x128/0x210 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x7ac/0x1f68 kernel/exit.c:953
 do_group_exit+0xa4/0x208 kernel/exit.c:1102
 get_signal+0x1b00/0x1ba8 kernel/signal.c:3034
 do_signal+0x160/0x620 arch/arm64/kernel/signal.c:1658
 do_notify_resume+0x18c/0x258 arch/arm64/kernel/entry-common.c:148
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc_compat+0xfc/0x17c arch/arm64/kernel/entry-common.c:888
 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605

Allocated by task 3303:
 kasan_save_stack+0x3c/0x64 mm/kasan/common.c:47
 kasan_save_track+0x20/0x3c mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x54 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xb8/0xbc mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x1b0/0x3cc mm/slub.c:4372
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 binderfs_binder_device_create.isra.0+0x140/0x9a0 drivers/android/binderfs.c:147
 binderfs_fill_super+0x69c/0xed4 drivers/android/binderfs.c:730
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0xac/0x148 fs/super.c:1299
 binderfs_fs_context_get_tree+0x18/0x24 drivers/android/binderfs.c:750
 vfs_get_tree+0x74/0x280 fs/super.c:1759
 do_new_mount fs/namespace.c:3884 [inline]
 path_mount+0xe54/0x1808 fs/namespace.c:4211
 do_mount fs/namespace.c:4224 [inline]
 __do_sys_mount fs/namespace.c:4435 [inline]
 __se_sys_mount fs/namespace.c:4412 [inline]
 __arm64_sys_mount+0x304/0x3dc fs/namespace.c:4412
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
 do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157
 el0_svc_compat+0x4c/0x17c arch/arm64/kernel/entry-common.c:887
 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605

Freed by task 3303:
 kasan_save_stack+0x3c/0x64 mm/kasan/common.c:47
 kasan_save_track+0x20/0x3c mm/kasan/common.c:68
 kasan_save_free_info+0x4c/0x74 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x50/0x6c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2398 [inline]
 slab_free mm/slub.c:4656 [inline]
 kfree+0x1bc/0x444 mm/slub.c:4855
 binderfs_evict_inode+0x238/0x2b4 drivers/android/binderfs.c:279
 evict+0x2c0/0x67c fs/inode.c:810
 iput_final fs/inode.c:1898 [inline]
 iput fs/inode.c:1924 [inline]
 iput+0x3b0/0x6b4 fs/inode.c:1910
 dentry_unlink_inode+0x208/0x46c fs/dcache.c:457
 __dentry_kill+0x150/0x52c fs/dcache.c:660
 shrink_kill fs/dcache.c:1105 [inline]
 shrink_dentry_list+0x114/0x3a4 fs/dcache.c:1132
 shrink_dcache_parent+0x158/0x354 fs/dcache.c:1566
 do_one_tree fs/dcache.c:1595 [inline]
 shrink_dcache_for_umount+0x88/0x304 fs/dcache.c:1612
 generic_shutdown_super+0x60/0x2e8 fs/super.c:620
 kill_anon_super fs/super.c:1237 [inline]
 kill_litter_super+0x68/0xa4 fs/super.c:1247
 binderfs_kill_super+0x38/0x88 drivers/android/binderfs.c:792
 deactivate_locked_super+0x98/0x17c fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xb0/0xd4 fs/super.c:502
 cleanup_mnt+0x198/0x424 fs/namespace.c:1435
 __cleanup_mnt+0x14/0x20 fs/namespace.c:1442
 task_work_run+0x128/0x210 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x7ac/0x1f68 kernel/exit.c:953
 do_group_exit+0xa4/0x208 kernel/exit.c:1102
 get_signal+0x1b00/0x1ba8 kernel/signal.c:3034
 do_signal+0x1f4/0x620 arch/arm64/kernel/signal.c:1658
 do_notify_resume+0x18c/0x258 arch/arm64/kernel/entry-common.c:148
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc_compat+0xfc/0x17c arch/arm64/kernel/entry-common.c:888
 el0t_32_sync_handler+0x98/0x13c arch/arm64/kernel/entry-common.c:897
 el0t_32_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:605

The buggy address belongs to the object at ffff00001794b800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 8 bytes inside of
 freed 512-byte region [ffff00001794b800, ffff00001794ba00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff00001794a800 pfn:0x57948
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x1ffc00000000240(workingset|head|node=0|zone=0|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 01ffc00000000240 ffff00000dc01c80 fffffdffc04f3c10 fffffdffc062de10
raw: ffff00001794a800 0000000000100005 00000000f5000000 0000000000000000
head: 01ffc00000000240 ffff00000dc01c80 fffffdffc04f3c10 fffffdffc062de10
head: ffff00001794a800 0000000000100005 00000000f5000000 0000000000000000
head: 01ffc00000000002 fffffdffc05e5201 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff00001794b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff00001794b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff00001794b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff00001794b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff00001794b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================