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BUG: KASAN: use-after-free in radix_tree_next_slot include/linux/radix-tree.h:422 [inline]
BUG: KASAN: use-after-free in idr_for_each+0x1fe/0x2c0 lib/idr.c:202
Read of size 8 at addr ffff88803ea15638 by task syz-executor.3/24446

CPU: 0 PID: 24446 Comm: syz-executor.3 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x183/0x22e lib/dump_stack.c:120
 print_address_description+0x5f/0x3b0 mm/kasan/report.c:230
 __kasan_report mm/kasan/report.c:396 [inline]
 kasan_report+0x15e/0x200 mm/kasan/report.c:413
 radix_tree_next_slot include/linux/radix-tree.h:422 [inline]
 idr_for_each+0x1fe/0x2c0 lib/idr.c:202
 io_ring_ctx_wait_and_kill+0x1f0/0x400 fs/io_uring.c:8767
 io_uring_release+0x57/0x70 fs/io_uring.c:8792
 __fput+0x34d/0x7a0 fs/file_table.c:280
 task_work_run+0x137/0x1c0 kernel/task_work.c:140
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x769/0x2490 kernel/exit.c:825
 do_group_exit+0x168/0x2d0 kernel/exit.c:922
 get_signal+0x16b5/0x2030 kernel/signal.c:2770
 arch_do_signal_or_restart+0x8e/0x6a0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0xac/0x1e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x48/0x190 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: Unable to access opcode bytes at RIP 0x45e1ef.
RSP: 002b:00007f3375cb2cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000119c030 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000119c030
RBP: 000000000119c028 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007ffd7dc97a7f R14: 00007f3375cb39c0 R15: 000000000119c034

Allocated by task 24435:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:401 [inline]
 ____kasan_kmalloc+0xbd/0xf0 mm/kasan/common.c:429
 kasan_slab_alloc include/linux/kasan.h:209 [inline]
 slab_post_alloc_hook mm/slab.h:512 [inline]
 slab_alloc_node mm/slub.c:2891 [inline]
 slab_alloc mm/slub.c:2899 [inline]
 kmem_cache_alloc+0x1d7/0x2e0 mm/slub.c:2904
 radix_tree_node_alloc+0x8b/0x3b0 lib/radix-tree.c:274
 idr_get_free+0x2ca/0xb60 lib/radix-tree.c:1504
 idr_alloc_u32 lib/idr.c:46 [inline]
 idr_alloc_cyclic+0x1cc/0x5a0 lib/idr.c:125
 io_register_personality fs/io_uring.c:9835 [inline]
 __io_uring_register fs/io_uring.c:10064 [inline]
 __do_sys_io_uring_register fs/io_uring.c:10114 [inline]
 __se_sys_io_uring_register+0xc9e/0x28f0 fs/io_uring.c:10096
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 12:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x3d/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:356
 ____kasan_slab_free+0xe2/0x110 mm/kasan/common.c:362
 kasan_slab_free include/linux/kasan.h:192 [inline]
 slab_free_hook mm/slub.c:1547 [inline]
 slab_free_freelist_hook+0xd6/0x1a0 mm/slub.c:1580
 slab_free mm/slub.c:3142 [inline]
 kmem_cache_free+0x85/0x160 mm/slub.c:3158
 rcu_do_batch kernel/rcu/tree.c:2489 [inline]
 rcu_core+0x840/0x1180 kernel/rcu/tree.c:2723
 __do_softirq+0x372/0x7a6 kernel/softirq.c:343

Last potentially related work creation:
 kasan_save_stack+0x27/0x50 mm/kasan/common.c:38
 kasan_record_aux_stack+0xcc/0x100 mm/kasan/generic.c:344
 __call_rcu kernel/rcu/tree.c:2965 [inline]
 call_rcu+0x166/0x8b0 kernel/rcu/tree.c:3038
 radix_tree_node_free lib/radix-tree.c:308 [inline]
 delete_node+0x1bf/0x7d0 lib/radix-tree.c:571
 radix_tree_delete_item+0x2e2/0x3e0 lib/radix-tree.c:1428
 io_remove_personalities+0x21/0x150 fs/io_uring.c:8712
 idr_for_each+0x16b/0x2c0 lib/idr.c:208
 io_ring_ctx_wait_and_kill+0x1f0/0x400 fs/io_uring.c:8767
 io_uring_release+0x57/0x70 fs/io_uring.c:8792
 __fput+0x34d/0x7a0 fs/file_table.c:280
 task_work_run+0x137/0x1c0 kernel/task_work.c:140
 exit_task_work include/linux/task_work.h:30 [inline]
 do_exit+0x769/0x2490 kernel/exit.c:825
 do_group_exit+0x168/0x2d0 kernel/exit.c:922
 get_signal+0x16b5/0x2030 kernel/signal.c:2770
 arch_do_signal_or_restart+0x8e/0x6a0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0xac/0x1e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x48/0x190 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Second to last potentially related work creation:
 kasan_save_stack+0x27/0x50 mm/kasan/common.c:38
 kasan_record_aux_stack+0xcc/0x100 mm/kasan/generic.c:344
 __call_rcu kernel/rcu/tree.c:2965 [inline]
 call_rcu+0x166/0x8b0 kernel/rcu/tree.c:3038
 xa_node_free lib/xarray.c:258 [inline]
 xas_delete_node lib/xarray.c:494 [inline]
 update_node lib/xarray.c:756 [inline]
 xas_store+0xea6/0x1820 lib/xarray.c:841
 __xa_erase lib/xarray.c:1489 [inline]
 xa_erase+0x120/0x200 lib/xarray.c:1510
 io_uring_del_task_file fs/io_uring.c:9015 [inline]
 io_uring_remove_task_files fs/io_uring.c:9026 [inline]
 __io_uring_files_cancel+0x1900/0x19e0 fs/io_uring.c:9042
 io_uring_files_cancel include/linux/io_uring.h:51 [inline]
 do_exit+0x2e6/0x2490 kernel/exit.c:780
 do_group_exit+0x168/0x2d0 kernel/exit.c:922
 get_signal+0x16b5/0x2030 kernel/signal.c:2770
 arch_do_signal_or_restart+0x8e/0x6a0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0xac/0x1e0 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x48/0x190 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff88803ea15600
 which belongs to the cache radix_tree_node of size 576
The buggy address is located 56 bytes inside of
 576-byte region [ffff88803ea15600, ffff88803ea15840)
The buggy address belongs to the page:
page:0000000057423be6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3ea14
head:0000000057423be6 order:1 compound_mapcount:0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 ffffea0000c88b00 0000000300000003 ffff88801084db40
raw: 0000000000000000 00000000800b000b 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88803ea15500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803ea15580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88803ea15600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88803ea15680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803ea15700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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