loop2: detected capacity change from 0 to 512
==================================================================
BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3f00 fs/ext4/inode.c:4641
Read of size 8 at addr ffff8880434ab6b0 by task syz-executor.2/17528

CPU: 1 PID: 17528 Comm: syz-executor.2 Not tainted 5.15.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 __ext4_iget+0x2ee/0x3f00 fs/ext4/inode.c:4641
 ext4_quota_enable fs/ext4/super.c:6367 [inline]
 ext4_enable_quotas+0x54f/0xd40 fs/ext4/super.c:6403
 ext4_fill_super+0x9598/0xa110 fs/ext4/super.c:4951
 mount_bdev+0x2c9/0x3f0 fs/super.c:1387
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x28b/0xae0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f935d94f1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f935beceee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f935becef80 RCX: 00007f935d94f1ea
RDX: 00000000200004c0 RSI: 0000000020000500 RDI: 00007f935becef40
RBP: 00000000200004c0 R08: 00007f935becef80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000500
R13: 00007f935becef40 R14: 00000000000004a6 R15: 0000000020000240
 </TASK>

Allocated by task 9126:
 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:434 [inline]
 __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2644 [inline]
 f2fs_alloc_inode+0x15d/0x5b0 fs/f2fs/super.c:1350
 alloc_inode fs/inode.c:236 [inline]
 iget_locked+0x194/0x7f0 fs/inode.c:1244
 f2fs_iget+0x52/0x49c0 fs/f2fs/inode.c:489
 f2fs_fill_super+0x4ef8/0x8350 fs/f2fs/super.c:4114
 mount_bdev+0x2c9/0x3f0 fs/super.c:1387
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x28b/0xae0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:2994 [inline]
 call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3074
 f2fs_put_super+0x779/0xd10 fs/f2fs/super.c:1588
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_block_super+0x7a/0xe0 fs/super.c:1414
 kill_f2fs_super+0x2ff/0x3c0 fs/f2fs/super.c:4501
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Second to last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:2994 [inline]
 call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3074
 f2fs_put_super+0x779/0xd10 fs/f2fs/super.c:1588
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_block_super+0x7a/0xe0 fs/super.c:1414
 kill_f2fs_super+0x2ff/0x3c0 fs/f2fs/super.c:4501
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff8880434aaf80
 which belongs to the cache f2fs_inode_cache of size 2304
The buggy address is located 1840 bytes inside of
 2304-byte region [ffff8880434aaf80, ffff8880434ab880)
The buggy address belongs to the page:
page:ffffea00010d2a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880434a9300 pfn:0x434a8
head:ffffea00010d2a00 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff888046f97701
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001d89c00 0000000200000002 ffff8880191138c0
raw: ffff8880434a9300 00000000800d0002 00000001ffffffff ffff888046f97701
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 3690, ts 110936114681, free_ts 14275640645
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421
 alloc_slab_page mm/slub.c:1775 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0xbb/0x4b0 mm/slub.c:1975
 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008
 __slab_alloc mm/slub.c:3095 [inline]
 slab_alloc_node mm/slub.c:3186 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2644 [inline]
 f2fs_alloc_inode+0x15d/0x5b0 fs/f2fs/super.c:1350
 alloc_inode fs/inode.c:236 [inline]
 iget_locked+0x194/0x7f0 fs/inode.c:1244
 f2fs_iget+0x52/0x49c0 fs/f2fs/inode.c:489
 f2fs_fill_super+0x6484/0x8350 fs/f2fs/super.c:4222
 mount_bdev+0x2c9/0x3f0 fs/super.c:1387
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x28b/0xae0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317
 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396
 free_contig_range+0x95/0xf0 mm/page_alloc.c:9340
 destroy_args+0xfe/0x97f mm/debug_vm_pgtable.c:1018
 debug_vm_pgtable+0x40d/0x462 mm/debug_vm_pgtable.c:1331
 do_one_initcall+0x22b/0x7a0 init/main.c:1295
 do_initcall_level+0x157/0x207 init/main.c:1368
 do_initcalls+0x49/0x86 init/main.c:1384
 kernel_init_freeable+0x425/0x5b5 init/main.c:1608
 kernel_init+0x19/0x290 init/main.c:1499
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Memory state around the buggy address:
 ffff8880434ab580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880434ab600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880434ab680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff8880434ab700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880434ab780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================