F2FS-fs (loop2): Start checkpoint disabled!
loop2: detected capacity change from 0 to 1024
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4652
Read of size 8 at addr ffff88812798f638 by task syz.2.70/879

CPU: 0 PID: 879 Comm: syz.2.70 Not tainted 5.15.178-syzkaller-00018-gc7971fc03a06 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106
 print_address_description+0x87/0x3a0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x177/0x1c0 mm/kasan/report.c:451
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4652
 ext4_quota_enable fs/ext4/super.c:6388 [inline]
 ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6424
 ext4_fill_super+0x8b95/0x96e0 fs/ext4/super.c:4960
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 ext4_mount+0x34/0x40 fs/ext4/super.c:6603
 legacy_get_tree+0xee/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
 path_mount+0x671/0x1070 fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb222f3890a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb2229a8e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb2229a8ef0 RCX: 00007fb222f3890a
RDX: 0000200000000580 RSI: 00002000000005c0 RDI: 00007fb2229a8eb0
RBP: 0000200000000580 R08: 00007fb2229a8ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000005c0
R13: 00007fb2229a8eb0 R14: 0000000000000550 R15: 0000200000000600
 </TASK>

Allocated by task 613:
 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+0xb1/0xe0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3233
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2642 [inline]
 f2fs_alloc_inode+0x26/0x380 fs/f2fs/super.c:1383
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x174/0x860 fs/inode.c:1308
 f2fs_iget+0x55/0x4b80 fs/f2fs/inode.c:498
 f2fs_fill_super+0x62f3/0x8120 fs/f2fs/super.c:4259
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4506
 legacy_get_tree+0xee/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
 path_mount+0x671/0x1070 fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Last potentially related work creation:
 kasan_save_stack+0x36/0x60 mm/kasan/common.c:38
 kasan_record_aux_stack+0xca/0xf0 mm/kasan/generic.c:348
 __call_rcu kernel/rcu/tree.c:3007 [inline]
 call_rcu+0x126/0x1070 kernel/rcu/tree.c:3087
 destroy_inode fs/inode.c:316 [inline]
 evict+0x87d/0x930 fs/inode.c:662
 iput_final fs/inode.c:1769 [inline]
 iput+0x63b/0x7e0 fs/inode.c:1795
 f2fs_fill_super+0x66f4/0x8120 fs/f2fs/super.c:4442
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4506
 legacy_get_tree+0xee/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
 path_mount+0x671/0x1070 fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3540
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3540
 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88812798f200
 which belongs to the cache f2fs_inode_cache of size 1152
The buggy address is located 1080 bytes inside of
 1152-byte region [ffff88812798f200, ffff88812798f680)
The buggy address belongs to the page:
page:ffffea00049e6300 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812798c500 pfn:0x12798c
head:ffffea00049e6300 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 0000000100000001 ffff8881029d8a00
raw: ffff88812798c500 00000000800c0007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 571, ts 55049543501, free_ts 31850850141
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x15d/0x170 mm/page_alloc.c:2420
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x3bb6/0x3c90 mm/page_alloc.c:4192
 __alloc_pages+0x38a/0x7b0 mm/page_alloc.c:5465
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1912 [inline]
 new_slab+0x92/0x490 mm/slub.c:1975
 ___slab_alloc+0x39e/0x830 mm/slub.c:3008
 __slab_alloc+0x4a/0x90 mm/slub.c:3095
 slab_alloc_node mm/slub.c:3186 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x134/0x200 mm/slub.c:3233
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2642 [inline]
 f2fs_alloc_inode+0x26/0x380 fs/f2fs/super.c:1383
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x174/0x860 fs/inode.c:1308
 f2fs_iget+0x55/0x4b80 fs/f2fs/inode.c:498
 f2fs_fill_super+0x62f3/0x8120 fs/f2fs/super.c:4259
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4506
 legacy_get_tree+0xee/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3012
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:1413 [inline]
 free_unref_page_prepare+0x7a9/0x7e0 mm/page_alloc.c:3317
 free_unref_page_list+0x1aa/0x6d0 mm/page_alloc.c:3433
 release_pages+0xe33/0xe90 mm/swap.c:963
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:320
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu+0xd0/0x180 mm/mmu_gather.c:247
 zap_pte_range mm/memory.c:1456 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0x1a96/0x1ca0 mm/memory.c:1576
 unmap_single_vma mm/memory.c:1621 [inline]
 unmap_vmas+0x389/0x560 mm/memory.c:1653
 exit_mmap+0x3e7/0x630 mm/mmap.c:3204
 __mmput+0x95/0x300 kernel/fork.c:1127
 mmput+0x59/0x70 kernel/fork.c:1148
 exit_mm kernel/exit.c:550 [inline]
 do_exit+0xb6a/0x29e0 kernel/exit.c:861
 do_group_exit+0x141/0x310 kernel/exit.c:996
 get_signal+0x797/0x1620 kernel/signal.c:2900
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214

Memory state around the buggy address:
 ffff88812798f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812798f580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812798f600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff88812798f680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812798f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs warning (device loop2): ext4_enable_quotas:6432: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop2): mount failed