==================================================================
BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x26c/0x3338 fs/ext4/inode.c:4708
Read of size 8 at addr ffff0000df537f30 by task syz-executor.2/18847

CPU: 0 PID: 18847 Comm: syz-executor.2 Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:475
 kasan_report+0xd8/0x138 mm/kasan/report.c:588
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 __ext4_iget+0x26c/0x3338 fs/ext4/inode.c:4708
 __ext4_fill_super fs/ext4/super.c:5473 [inline]
 ext4_fill_super+0x4380/0x56ec fs/ext4/super.c:5703
 get_tree_bdev+0x33c/0x4a8 fs/super.c:1577
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5735
 vfs_get_tree+0x90/0x288 fs/super.c:1750
 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335
 path_mount+0x590/0xe04 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Allocated by task 18707:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x90/0x4a0 mm/slab.h:762
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc_lru+0x194/0x394 mm/slub.c:3509
 xas_alloc lib/xarray.c:375 [inline]
 xas_create+0xef4/0x13d4 lib/xarray.c:677
 xas_store+0x90/0x1598 lib/xarray.c:787
 shmem_add_to_page_cache+0x8b4/0x110c mm/shmem.c:801
 shmem_get_folio_gfp+0x1004/0x1bac mm/shmem.c:2050
 shmem_fault+0x1bc/0x7e0 mm/shmem.c:2227
 __do_fault+0x11c/0x3d8 mm/memory.c:4204
 do_read_fault mm/memory.c:4568 [inline]
 do_fault mm/memory.c:4705 [inline]
 do_pte_missing mm/memory.c:3669 [inline]
 handle_pte_fault mm/memory.c:4978 [inline]
 __handle_mm_fault mm/memory.c:5119 [inline]
 handle_mm_fault+0x1fa4/0x49fc mm/memory.c:5284
 faultin_page mm/gup.c:956 [inline]
 __get_user_pages+0x3e0/0xa24 mm/gup.c:1239
 populate_vma_page_range+0x254/0x328 mm/gup.c:1666
 __mm_populate+0x240/0x3d8 mm/gup.c:1775
 mm_populate include/linux/mm.h:3305 [inline]
 vm_mmap_pgoff+0x2bc/0x3d4 mm/util.c:551
 ksys_mmap_pgoff+0xd0/0x5b0 mm/mmap.c:1400
 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline]
 __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline]
 __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Freed by task 18820:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x7c mm/kasan/common.c:52
 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:522
 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook mm/slub.c:1826 [inline]
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0x2e4/0x56c mm/slub.c:3831
 radix_tree_node_rcu_free+0x78/0x8c lib/radix-tree.c:304
 rcu_do_batch kernel/rcu/tree.c:2139 [inline]
 rcu_core+0x8a4/0x1b28 kernel/rcu/tree.c:2403
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2420
 __do_softirq+0x2d0/0xd54 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x40/0x6c mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:492
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:502
 __call_rcu_common kernel/rcu/tree.c:2653 [inline]
 call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2767
 xa_node_free lib/xarray.c:258 [inline]
 xas_delete_node lib/xarray.c:495 [inline]
 update_node lib/xarray.c:759 [inline]
 xas_store+0xc58/0x1598 lib/xarray.c:844
 page_cache_delete mm/filemap.c:142 [inline]
 __filemap_remove_folio+0x4fc/0x6d0 mm/filemap.c:225
 filemap_remove_folio+0xd4/0x1cc mm/filemap.c:257
 truncate_inode_folio+0x6c/0x84 mm/truncate.c:195
 shmem_undo_range+0x334/0x11c0 mm/shmem.c:1018
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x230/0x8b8 mm/shmem.c:1243
 evict+0x260/0x68c fs/inode.c:664
 iput_final fs/inode.c:1775 [inline]
 iput+0x734/0x818 fs/inode.c:1801
 dentry_unlink_inode+0x370/0x4b0 fs/dcache.c:401
 __dentry_kill+0x324/0x5e4 fs/dcache.c:607
 dentry_kill+0xc8/0x250
 dput+0x218/0x454 fs/dcache.c:913
 __fput+0x4f0/0x7f8 fs/file_table.c:392
 ____fput+0x20/0x30 fs/file_table.c:412
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x63c/0x1f58 kernel/exit.c:874
 do_group_exit+0x194/0x22c kernel/exit.c:1024
 get_signal+0x1500/0x15ec kernel/signal.c:2892
 do_signal arch/arm64/kernel/signal.c:1249 [inline]
 do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

Second to last potentially related work creation:
 kasan_save_stack+0x40/0x6c mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:492
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:502
 __call_rcu_common kernel/rcu/tree.c:2653 [inline]
 call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2767
 xa_node_free lib/xarray.c:258 [inline]
 xas_delete_node lib/xarray.c:495 [inline]
 update_node lib/xarray.c:759 [inline]
 xas_store+0xc58/0x1598 lib/xarray.c:844
 page_cache_delete mm/filemap.c:142 [inline]
 __filemap_remove_folio+0x4fc/0x6d0 mm/filemap.c:225
 filemap_remove_folio+0xd4/0x1cc mm/filemap.c:257
 truncate_inode_folio+0x6c/0x84 mm/truncate.c:195
 shmem_undo_range+0x334/0x11c0 mm/shmem.c:1018
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x230/0x8b8 mm/shmem.c:1243
 evict+0x260/0x68c fs/inode.c:664
 iput_final fs/inode.c:1775 [inline]
 iput+0x734/0x818 fs/inode.c:1801
 dentry_unlink_inode+0x370/0x4b0 fs/dcache.c:401
 __dentry_kill+0x324/0x5e4 fs/dcache.c:607
 dentry_kill+0xc8/0x250
 dput+0x218/0x454 fs/dcache.c:913
 __fput+0x4f0/0x7f8 fs/file_table.c:392
 ____fput+0x20/0x30 fs/file_table.c:412
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x63c/0x1f58 kernel/exit.c:874
 do_group_exit+0x194/0x22c kernel/exit.c:1024
 get_signal+0x1500/0x15ec kernel/signal.c:2892
 do_signal arch/arm64/kernel/signal.c:1249 [inline]
 do_notify_resume+0x3bc/0x393c arch/arm64/kernel/signal.c:1302
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline]
 el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595

The buggy address belongs to the object at ffff0000df537c80
 which belongs to the cache radix_tree_node of size 576
The buggy address is located 112 bytes to the right of
 allocated 576-byte region [ffff0000df537c80, ffff0000df537ec0)

The buggy address belongs to the physical page:
page:00000000647f2279 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f534
head:00000000647f2279 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000cbcb0e01
anon flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c000fdc0 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000170017 00000001ffffffff ffff0000cbcb0e01
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000df537e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000df537e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff0000df537f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                     ^
 ffff0000df537f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000df538000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs (loop2): corrupt root inode, run e2fsck
EXT4-fs (loop2): mount failed