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BUG: KASAN: slab-use-after-free in hlist_add_head include/linux/list.h:1025 [inline]
BUG: KASAN: slab-use-after-free in binder_add_device+0x14/0x2c drivers/android/binder.c:6932
Write at addr f3f0000007062608 by task syz-executor/3302
Pointer tag: [f3], memory tag: [f5]

CPU: 1 UID: 0 PID: 3302 Comm: syz-executor Not tainted 6.13.0-syzkaller-09196-gcd45f362fc1f #0
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+0x78/0x90 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x108/0x618 mm/kasan/report.c:489
 kasan_report+0x88/0xac mm/kasan/report.c:602
 report_tag_fault arch/arm64/mm/fault.c:332 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:344 [inline]
 __do_kernel_fault+0x170/0x1c8 arch/arm64/mm/fault.c:386
 do_bad_area arch/arm64/mm/fault.c:486 [inline]
 do_tag_check_fault+0x78/0x8c arch/arm64/mm/fault.c:843
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:919
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:432
 el1h_64_sync_handler+0xa4/0x120 arch/arm64/kernel/entry-common.c:510
 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:595
 hlist_add_head include/linux/list.h:1025 [inline] (P)
 binder_add_device+0x14/0x2c drivers/android/binder.c:6932 (P)
 binderfs_fill_super+0x220/0x4f8 drivers/android/binderfs.c:729
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0x70/0xb8 fs/super.c:1299
 binderfs_fs_context_get_tree+0x18/0x24 drivers/android/binderfs.c:749
 vfs_get_tree+0x28/0xec fs/super.c:1814
 do_new_mount fs/namespace.c:3560 [inline]
 path_mount+0x3f8/0xa78 fs/namespace.c:3887
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount fs/namespace.c:4088 [inline]
 __arm64_sys_mount+0x1d4/0x2b4 fs/namespace.c:4088
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x30/0xe0 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:600

Allocated by task 3286:
 kasan_save_stack+0x3c/0x64 mm/kasan/common.c:47
 save_stack_info+0x40/0x158 mm/kasan/tags.c:106
 kasan_save_alloc_info+0x14/0x20 mm/kasan/tags.c:142
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 poison_kmalloc_redzone mm/kasan/common.c:350 [inline]
 __kasan_kmalloc+0xb4/0xb8 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x174/0x390 mm/slub.c:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 binderfs_binder_device_create.isra.0+0xac/0x368 drivers/android/binderfs.c:147
 binderfs_fill_super+0x220/0x4f8 drivers/android/binderfs.c:729
 vfs_get_super fs/super.c:1280 [inline]
 get_tree_nodev+0x70/0xb8 fs/super.c:1299
 binderfs_fs_context_get_tree+0x18/0x24 drivers/android/binderfs.c:749
 vfs_get_tree+0x28/0xec fs/super.c:1814
 do_new_mount fs/namespace.c:3560 [inline]
 path_mount+0x3f8/0xa78 fs/namespace.c:3887
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount fs/namespace.c:4088 [inline]
 __arm64_sys_mount+0x1d4/0x2b4 fs/namespace.c:4088
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x30/0xe0 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:600

Freed by task 3286:
 kasan_save_stack+0x3c/0x64 mm/kasan/common.c:47
 save_stack_info+0x40/0x158 mm/kasan/tags.c:106
 kasan_save_free_info+0x18/0x24 mm/kasan/tags.c:147
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x74/0x8c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0xfc/0x30c mm/slub.c:4757
 binderfs_evict_inode+0xe4/0xf8 drivers/android/binderfs.c:278
 evict+0xec/0x254 fs/inode.c:796
 iput_final fs/inode.c:1946 [inline]
 iput fs/inode.c:1972 [inline]
 iput+0xfc/0x1b8 fs/inode.c:1958
 dentry_unlink_inode+0xc0/0x188 fs/dcache.c:422
 __dentry_kill+0x7c/0x1d4 fs/dcache.c:625
 shrink_kill fs/dcache.c:1070 [inline]
 shrink_dentry_list+0x74/0xe4 fs/dcache.c:1097
 shrink_dcache_parent+0xcc/0x14c fs/dcache.c:1531
 do_one_tree fs/dcache.c:1560 [inline]
 shrink_dcache_for_umount+0x3c/0x1c8 fs/dcache.c:1577
 generic_shutdown_super+0x24/0x100 fs/super.c:620
 kill_anon_super+0x20/0x90 fs/super.c:1237
 kill_litter_super+0x28/0x38 fs/super.c:1247
 binderfs_kill_super+0x18/0x40 drivers/android/binderfs.c:791
 deactivate_locked_super+0x50/0x12c fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0x84/0x9c fs/super.c:502
 cleanup_mnt+0xa0/0x130 fs/namespace.c:1413
 __cleanup_mnt+0x14/0x20 fs/namespace.c:1420
 task_work_run+0x78/0xd4 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x2c8/0x98c kernel/exit.c:938
 do_group_exit+0x34/0x90 kernel/exit.c:1087
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 pid_child_should_wake+0x0/0x5c kernel/exit.c:1096
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xc0/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x30/0xe0 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x10c/0x138 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:600

The buggy address belongs to the object at fff0000007062600
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
 192-byte region [fff0000007062600, fff00000070626c0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47062
flags: 0x1ffc00000000000(node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0)
page_type: f5(slab)
raw: 01ffc00000000000 f3f0000003001300 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000150015 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 fff0000007062400: f5 f5 f5 f5 f5 f5 f5 f5 f6 f6 f6 f6 f6 f6 f6 f6
 fff0000007062500: f6 f6 f6 f6 fc fc fc fc fc fc fc fc fc fc fc fc
>fff0000007062600: f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5 f5
                   ^
 fff0000007062700: f5 f5 f5 f5 f5 f5 f5 f5 f0 f0 f0 f0 f0 f0 f0 f0
 fff0000007062800: f0 f0 f0 f0 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 fe fe
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