==================================================================
BUG: KASAN: slab-out-of-bounds in nilfs_iget_test+0xa5/0x320 fs/nilfs2/inode.c:544
Read of size 8 at addr ffff88803c6d88e0 by task syz-executor.2/14373

CPU: 0 PID: 14373 Comm: syz-executor.2 Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 nilfs_iget_test+0xa5/0x320 fs/nilfs2/inode.c:544
 find_inode+0x16f/0x430 fs/inode.c:916
 ilookup5_nowait fs/inode.c:1429 [inline]
 ilookup5+0xa1/0x200 fs/inode.c:1458
 iget5_locked+0x37/0x270 fs/inode.c:1239
 nilfs_iget_locked+0x12b/0x180 fs/nilfs2/inode.c:605
 nilfs_dat_read+0xbf/0x300 fs/nilfs2/dat.c:508
 nilfs_load_super_root fs/nilfs2/the_nilfs.c:120 [inline]
 load_nilfs+0x4f9/0x1030 fs/nilfs2/the_nilfs.c:301
 nilfs_fill_super+0x2ce/0x660 fs/nilfs2/super.c:1069
 nilfs_mount+0x67d/0x9a0 fs/nilfs2/super.c:1326
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1510
 do_new_mount+0x28f/0xae0 fs/namespace.c:3042
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f67fd08d69a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f67fde5cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000da6 RCX: 00007f67fd08d69a
RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007f67fde5cfe0
RBP: 00007f67fde5d020 R08: 00007f67fde5d020 R09: 0000000000004800
R10: 0000000000004800 R11: 0000000000000202 R12: 00000000200000c0
R13: 0000000020000100 R14: 00007f67fde5cfe0 R15: 0000000020000040
 </TASK>

Allocated by task 25144:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc_lru+0x11f/0x2e0 mm/slub.c:3483
 alloc_inode_sb include/linux/fs.h:2686 [inline]
 f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371
 alloc_inode fs/inode.c:260 [inline]
 iget_locked+0x1cc/0x830 fs/inode.c:1287
 f2fs_iget+0x56/0x4b30 fs/f2fs/inode.c:504
 f2fs_fill_super+0x6051/0x7cf0 fs/f2fs/super.c:4364
 mount_bdev+0x271/0x3a0 fs/super.c:1380
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1510
 do_new_mount+0x28f/0xae0 fs/namespace.c:3042
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491
 __call_rcu_common kernel/rcu/tree.c:2622 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736
 f2fs_put_super+0x5e0/0xc80 fs/f2fs/super.c:1597
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x7e/0xe0 fs/super.c:1407
 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Second to last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491
 __call_rcu_common kernel/rcu/tree.c:2622 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2736
 f2fs_put_super+0x631/0xc80 fs/f2fs/super.c:1600
 generic_shutdown_super+0x134/0x340 fs/super.c:500
 kill_block_super+0x7e/0xe0 fs/super.c:1407
 kill_f2fs_super+0x303/0x3d0 fs/f2fs/super.c:4635
 deactivate_locked_super+0xa4/0x110 fs/super.c:331
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88803c6d8000
 which belongs to the cache f2fs_inode_cache of size 2152
The buggy address is located 120 bytes to the right of
 allocated 2152-byte region [ffff88803c6d8000, ffff88803c6d8868)

The buggy address belongs to the physical page:
page:ffffea0000f1b600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803c6de1f8 pfn:0x3c6d8
head:ffffea0000f1b600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88801d4be801
ksm flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff8881462ccc80 ffffea0001ca4000 0000000000000003
raw: ffff88803c6de1f8 00000000800e0003 00000001ffffffff ffff88801d4be801
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 18073, tgid 18072 (syz-executor.2), ts 809709149688, free_ts 787608619645
 prep_new_page mm/page_alloc.c:2553 [inline]
 get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326
 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc_lru+0x1b9/0x2e0 mm/slub.c:3483
 alloc_inode_sb include/linux/fs.h:2686 [inline]
 f2fs_alloc_inode+0x167/0x530 fs/f2fs/super.c:1371
 alloc_inode fs/inode.c:260 [inline]
 iget_locked+0x1cc/0x830 fs/inode.c:1287
 f2fs_iget+0x56/0x4b30 fs/f2fs/inode.c:504
 f2fs_fill_super+0x4ace/0x7cf0 fs/f2fs/super.c:4254
 mount_bdev+0x271/0x3a0 fs/super.c:1380
 legacy_get_tree+0xef/0x190 fs/fs_context.c:610
 vfs_get_tree+0x8c/0x270 fs/super.c:1510
 do_new_mount+0x28f/0xae0 fs/namespace.c:3042
 do_mount fs/namespace.c:3385 [inline]
 __do_sys_mount fs/namespace.c:3594 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3571
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1454 [inline]
 free_pcp_prepare mm/page_alloc.c:1504 [inline]
 free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3483
 discard_slab mm/slub.c:2098 [inline]
 __unfreeze_partials+0x1b1/0x1f0 mm/slub.c:2637
 put_cpu_partial+0x116/0x180 mm/slub.c:2713
 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc_lru+0x11f/0x2e0 mm/slub.c:3483
 __d_alloc+0x31/0x710 fs/dcache.c:1769
 d_alloc fs/dcache.c:1849 [inline]
 d_alloc_parallel+0xce/0x13a0 fs/dcache.c:2638
 __lookup_slow+0x117/0x3e0 fs/namei.c:1671
 lookup_slow+0x53/0x70 fs/namei.c:1703
 walk_component+0x2d0/0x400 fs/namei.c:1994
 lookup_last fs/namei.c:2451 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2475
 filename_lookup+0x255/0x610 fs/namei.c:2504

Memory state around the buggy address:
 ffff88803c6d8780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88803c6d8800: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
>ffff88803c6d8880: fc fc fc fc fc fc fc fc fc fc fc fc fc 00 00 00
                                                       ^
 ffff88803c6d8900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88803c6d8980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================