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BUG: KASAN: invalid-access in radix_tree_next_slot include/linux/radix-tree.h:420 [inline]
BUG: KASAN: invalid-access in idr_for_each+0x88/0xfc lib/idr.c:202
Read at addr f7ff00000b6df7f8 by task syz-executor.0/15588
Pointer tag: [f7], memory tag: [fe]

CPU: 1 PID: 15588 Comm: syz-executor.0 Not tainted 5.11.0-syzkaller-08569-ga99163e9e708 #0
Hardware name: linux,dummy-virt (DT)
Call trace:
 dump_backtrace+0x0/0x1ac arch/arm64/kernel/stacktrace.c:112
 show_stack+0x18/0x70 arch/arm64/kernel/stacktrace.c:191
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0xd0/0x12c lib/dump_stack.c:120
 print_address_description+0x70/0x29c mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report+0x134/0x380 mm/kasan/report.c:413
 report_tag_fault arch/arm64/mm/fault.c:311 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:325 [inline]
 __do_kernel_fault+0x178/0x1bc arch/arm64/mm/fault.c:369
 do_bad_area arch/arm64/mm/fault.c:462 [inline]
 do_tag_check_fault+0x74/0x90 arch/arm64/mm/fault.c:717
 do_mem_abort+0x44/0xbc arch/arm64/mm/fault.c:793
 el1_abort+0x40/0x6c arch/arm64/kernel/entry-common.c:167
 el1_sync_handler+0xac/0xd0 arch/arm64/kernel/entry-common.c:259
 el1_sync+0x70/0x100 arch/arm64/kernel/entry.S:656
 radix_tree_next_slot include/linux/radix-tree.h:420 [inline]
 idr_for_each+0x88/0xfc lib/idr.c:202
 io_ring_ctx_wait_and_kill+0x7c/0x130 fs/io_uring.c:8868
 io_uring_release+0x18/0x30 fs/io_uring.c:8895
 __fput+0x78/0x230 fs/file_table.c:280
 ____fput+0x10/0x20 fs/file_table.c:313
 task_work_run+0x80/0x160 kernel/task_work.c:140
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x334/0xa34 kernel/exit.c:825
 do_group_exit+0x38/0xa0 kernel/exit.c:922
 __do_sys_exit_group kernel/exit.c:933 [inline]
 __se_sys_exit_group kernel/exit.c:931 [inline]
 __arm64_sys_exit_group+0x18/0x20 kernel/exit.c:931
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:49 [inline]
 el0_svc_common.constprop.0+0x60/0x120 arch/arm64/kernel/syscall.c:129
 do_el0_svc+0x74/0x90 arch/arm64/kernel/syscall.c:168
 el0_svc+0x2c/0x54 arch/arm64/kernel/entry-common.c:416
 el0_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:432
 el0_sync+0x18c/0x1c0 arch/arm64/kernel/entry.S:699

Allocated by task 15589:
 stack_trace_save+0x50/0x80 kernel/stacktrace.c:121
 kasan_save_stack+0x28/0x60 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc+0xe8/0x160 mm/kasan/common.c:429
 __kasan_slab_alloc+0x1c/0x30 mm/kasan/common.c:437
 kasan_slab_alloc include/linux/kasan.h:209 [inline]
 slab_post_alloc_hook mm/slab.h:512 [inline]
 slab_alloc_node mm/slub.c:2892 [inline]
 slab_alloc mm/slub.c:2900 [inline]
 kmem_cache_alloc+0x1b0/0x310 mm/slub.c:2905
 radix_tree_node_alloc.constprop.0+0x6c/0x104 lib/radix-tree.c:274
 idr_get_free+0x1e0/0x2c0 lib/radix-tree.c:1504
 idr_alloc_u32+0x64/0xf0 lib/idr.c:46
 idr_alloc_cyclic+0x68/0xe4 lib/idr.c:125
 io_register_personality fs/io_uring.c:9936 [inline]
 __io_uring_register fs/io_uring.c:10150 [inline]
 __do_sys_io_uring_register fs/io_uring.c:10200 [inline]
 __se_sys_io_uring_register fs/io_uring.c:10182 [inline]
 __arm64_sys_io_uring_register+0x354/0x1e00 fs/io_uring.c:10182
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:49 [inline]
 el0_svc_common.constprop.0+0x60/0x120 arch/arm64/kernel/syscall.c:129
 do_el0_svc+0x74/0x90 arch/arm64/kernel/syscall.c:168
 el0_svc+0x2c/0x54 arch/arm64/kernel/entry-common.c:416
 el0_sync_handler+0x1a4/0x1b0 arch/arm64/kernel/entry-common.c:432
 el0_sync+0x18c/0x1c0 arch/arm64/kernel/entry.S:699

Freed by task 2808:
 stack_trace_save+0x50/0x80 kernel/stacktrace.c:121
 kasan_save_stack+0x28/0x60 mm/kasan/common.c:38
 kasan_set_track+0x28/0x40 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/hw_tags.c:174
 ____kasan_slab_free.constprop.0+0x184/0x1c0 mm/kasan/common.c:362
 __kasan_slab_free+0x10/0x20 mm/kasan/common.c:369
 kasan_slab_free include/linux/kasan.h:192 [inline]
 slab_free_hook mm/slub.c:1547 [inline]
 slab_free_freelist_hook+0x98/0x18c mm/slub.c:1580
 slab_free mm/slub.c:3143 [inline]
 kmem_cache_free+0xa0/0x460 mm/slub.c:3159
 radix_tree_node_rcu_free+0x48/0x60 lib/radix-tree.c:302
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x31c/0x5a0 kernel/rcu/tree.c:2794
 rcu_core_si+0x10/0x20 kernel/rcu/tree.c:2807
 _stext+0x124/0x2ac

The buggy address belongs to the object at ffff00000b6df7c0
 which belongs to the cache radix_tree_node of size 576
The buggy address is located 56 bytes inside of
 576-byte region [ffff00000b6df7c0, ffff00000b6dfa00)
The buggy address belongs to the page:
page:0000000089d030e3 refcount:1 mapcount:0 mapping:0000000000000000 index:0xf7ff00000b6df7c0 pfn:0x4b6de
head:0000000089d030e3 order:1 compound_mapcount:0
flags: 0x1ffffc000010200(slab|head)
raw: 01ffffc000010200 fffffc00002db900 0000000200000002 fbff000004802900
raw: f7ff00000b6df7c0 00000000800d0002 00000001ffffffff faff000028f33d01
page dumped because: kasan: bad access detected
pages's memcg:faff000028f33d01

Memory state around the buggy address:
 ffff00000b6df500: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff00000b6df600: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
>ffff00000b6df700: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
                                                                ^
 ffff00000b6df800: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff00000b6df900: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
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