EXT4-fs (loop2): Test dummy encryption mode enabled
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4715
Read of size 8 at addr ffff888133672f78 by task syz.2.1726/6676

CPU: 0 PID: 6676 Comm: syz.2.1726 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0xf1/0x140 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4715
 ext4_quota_enable fs/ext4/super.c:6433 [inline]
 ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6469
 ext4_fill_super+0x82fa/0x8bd0 fs/ext4/super.c:4976
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 ext4_mount+0x34/0x40 fs/ext4/super.c:6648
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
 do_new_mount+0x25a/0xa20 fs/namespace.c:3034
 path_mount+0x659/0xff0 fs/namespace.c:3364
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3562
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562
 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f41ca8c8a0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f41c9321e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f41c9321ee0 RCX: 00007f41ca8c8a0a
RDX: 0000200000000bc0 RSI: 0000200000000240 RDI: 00007f41c9321ea0
RBP: 0000200000000bc0 R08: 00007f41c9321ee0 R09: 0000000000004002
R10: 0000000000004002 R11: 0000000000000246 R12: 0000200000000240
R13: 00007f41c9321ea0 R14: 0000000000000be4 R15: 0000200000000000
 </TASK>

Allocated by task 6427:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3245 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2817 [inline]
 f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459
 alloc_inode fs/inode.c:264 [inline]
 new_inode_pseudo+0x62/0x210 fs/inode.c:1011
 new_inode+0x28/0x1e0 fs/inode.c:1040
 f2fs_new_inode+0xe8/0x12b0 fs/f2fs/namei.c:36
 f2fs_mkdir+0x12b/0x540 fs/f2fs/namei.c:706
 vfs_mkdir+0x387/0x580 fs/namei.c:4073
 do_mkdirat+0x171/0x4c0 fs/namei.c:4098
 __do_sys_mkdirat fs/namei.c:4113 [inline]
 __se_sys_mkdirat fs/namei.c:4111 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4111
 x64_sys_call+0x37e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 5255:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
 slab_free mm/slub.c:3526 [inline]
 kmem_cache_free+0x100/0x320 mm/slub.c:3544
 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1607
 i_callback+0x4c/0x70 fs/inode.c:253
 rcu_do_batch+0x532/0xbe0 kernel/rcu/tree.c:2523
 rcu_core+0x5ee/0xf80 kernel/rcu/tree.c:2763
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq+0xb/0xd kernel/softirq.c:621

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3011 [inline]
 call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129
 destroy_inode fs/inode.c:319 [inline]
 evict+0x834/0x8d0 fs/inode.c:665
 dispose_list fs/inode.c:683 [inline]
 evict_inodes+0x5e6/0x660 fs/inode.c:737
 generic_shutdown_super+0x96/0x330 fs/super.c:454
 kill_block_super+0x7f/0xf0 fs/super.c:1427
 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4740
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1148
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1155
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Second to last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu_common kernel/rcu/tree.c:3011 [inline]
 call_rcu+0x10b/0xf80 kernel/rcu/tree.c:3129
 destroy_inode fs/inode.c:319 [inline]
 evict+0x834/0x8d0 fs/inode.c:665
 dispose_list fs/inode.c:683 [inline]
 evict_inodes+0x5e6/0x660 fs/inode.c:737
 generic_shutdown_super+0x96/0x330 fs/super.c:454
 kill_block_super+0x7f/0xf0 fs/super.c:1427
 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4740
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1148
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1155
 task_work_run+0x127/0x190 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff888133672a70
 which belongs to the cache f2fs_inode_cache of size 1424
The buggy address is located 1288 bytes inside of
 1424-byte region [ffff888133672a70, ffff888133673000)
The buggy address belongs to the page:
page:ffffea0004cd9c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888133671230 pfn:0x133670
head:ffffea0004cd9c00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004f93a00 0000000200000002 ffff8881081f7680
raw: ffff888133671230 0000000080150012 00000001ffffffff 0000000000000000
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 1117, ts 48897787769, free_ts 31701334937
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5808
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa1/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x381/0x810 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0x138/0x260 mm/slub.c:3260
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2817 [inline]
 f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1459
 alloc_inode fs/inode.c:264 [inline]
 new_inode_pseudo+0x62/0x210 fs/inode.c:1011
 new_inode+0x28/0x1e0 fs/inode.c:1040
 f2fs_new_inode+0xe8/0x12b0 fs/f2fs/namei.c:36
 __f2fs_tmpfile+0xae/0x380 fs/f2fs/namei.c:802
 f2fs_create_whiteout fs/f2fs/namei.c:879 [inline]
 f2fs_rename fs/f2fs/namei.c:929 [inline]
 f2fs_rename2+0x861/0x2430 fs/f2fs/namei.c:1270
 vfs_rename+0xbca/0x10f0 fs/namei.c:4840
 ovl_do_rename fs/overlayfs/overlayfs.h:258 [inline]
 ovl_check_rename_whiteout fs/overlayfs/super.c:1313 [inline]
 ovl_make_workdir fs/overlayfs/super.c:1433 [inline]
 ovl_get_workdir+0x772/0x1130 fs/overlayfs/super.c:1548
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 __free_pages_ok+0x925/0x9f0 mm/page_alloc.c:1772
 free_the_page mm/page_alloc.c:807 [inline]
 free_compound_page+0x89/0xa0 mm/page_alloc.c:828
 free_transhuge_page+0x250/0x270 mm/huge_memory.c:2775
 destroy_compound_page include/linux/mm.h:1000 [inline]
 __put_compound_page mm/swap.c:111 [inline]
 release_pages+0x438/0x1060 mm/swap.c:991
 free_pages_and_swap_cache+0x86/0xa0 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+0xdf/0x190 mm/mmu_gather.c:247
 zap_pte_range mm/memory.c:1526 [inline]
 zap_pmd_range mm/memory.c:1575 [inline]
 zap_pud_range mm/memory.c:1604 [inline]
 zap_p4d_range mm/memory.c:1625 [inline]
 unmap_page_range+0x1bba/0x1d80 mm/memory.c:1646
 unmap_single_vma mm/memory.c:1691 [inline]
 unmap_vmas+0x26d/0x380 mm/memory.c:1723
 exit_mmap+0x412/0x8b0 mm/mmap.c:3245
 __mmput+0x93/0x320 kernel/fork.c:1180
 mmput+0x50/0x150 kernel/fork.c:1203
 exit_mm kernel/exit.c:554 [inline]
 do_exit+0x9f2/0x27e0 kernel/exit.c:876
 do_group_exit+0x141/0x310 kernel/exit.c:1003
 get_signal+0x66a/0x1480 kernel/signal.c:2907
 arch_do_signal_or_restart+0xdf/0x11c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178

Memory state around the buggy address:
 ffff888133672e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888133672e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888133672f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff888133672f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888133673000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs error (device loop2): ext4_quota_enable:6433: inode #3: comm syz.2.1726: unexpected EA_INODE flag
EXT4-fs error (device loop2): ext4_quota_enable:6436: comm syz.2.1726: Bad quota inode: 3, type: 0
EXT4-fs warning (device loop2): ext4_enable_quotas:6477: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
EXT4-fs (loop2): mount failed