EXT4-fs (loop5): 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 ffff888134a8af78 by task syz.5.317/1562

CPU: 0 PID: 1562 Comm: syz.5.317 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: 0033:0x7fa8776408ca
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:00007fa876099e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa876099ee0 RCX: 00007fa8776408ca
RDX: 0000200000000140 RSI: 00002000000005c0 RDI: 00007fa876099ea0
RBP: 0000200000000140 R08: 00007fa876099ee0 R09: 0000000000004000
R10: 0000000000004000 R11: 0000000000000246 R12: 00002000000005c0
R13: 00007fa876099ea0 R14: 00000000000005d8 R15: 0000200000000300
 </TASK>

Allocated by task 1225:
 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]
 iget_locked+0x16c/0x7e0 fs/inode.c:1318
 f2fs_iget+0x55/0x5060 fs/f2fs/inode.c:517
 f2fs_fill_super+0x4aef/0x6dc0 fs/f2fs/super.c:4466
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4708
 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

Freed by task 25:
 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
 run_ksoftirqd+0x28/0x40 kernel/softirq.c:959
 smpboot_thread_fn+0x45a/0x8c0 kernel/smpboot.c:164
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

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 ffff888134a8aa70
 which belongs to the cache f2fs_inode_cache of size 1424
The buggy address is located 1288 bytes inside of
 1424-byte region [ffff888134a8aa70, ffff888134a8b000)
The buggy address belongs to the page:
page:ffffea0004d2a200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888134a8e100 pfn:0x134a88
head:ffffea0004d2a200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004a62000 0000000200000002 ffff8881081f7680
raw: ffff888134a8e100 0000000080150011 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 585, ts 37942925860, free_ts 28452428760
 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]
 iget_locked+0x16c/0x7e0 fs/inode.c:1318
 f2fs_iget+0x55/0x5060 fs/f2fs/inode.c:517
 f2fs_fill_super+0x48c9/0x6dc0 fs/f2fs/super.c:4458
 mount_bdev+0x2ae/0x3e0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4708
 legacy_get_tree+0xed/0x190 fs/fs_context.c:611
 vfs_get_tree+0x89/0x260 fs/super.c:1530
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_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534
 free_unref_page_list+0x13a/0x9d0 mm/page_alloc.c:3671
 release_pages+0x1006/0x1060 mm/swap.c:1015
 __pagevec_release+0x71/0xe0 mm/swap.c:1035
 pagevec_release include/linux/pagevec.h:81 [inline]
 shmem_undo_range+0x595/0x1470 mm/shmem.c:969
 shmem_truncate_range mm/shmem.c:1068 [inline]
 shmem_evict_inode+0x21a/0xa10 mm/shmem.c:1150
 evict+0x4c9/0x8d0 fs/inode.c:650
 iput_final fs/inode.c:1779 [inline]
 iput+0x635/0x7c0 fs/inode.c:1805
 dentry_unlink_inode+0x32f/0x3e0 fs/dcache.c:380
 __dentry_kill+0x44f/0x650 fs/dcache.c:586
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x47/0x90 fs/dcache.c:893
 __fput+0x580/0x8b0 fs/file_table.c:319
 ____fput+0x15/0x20 fs/file_table.c:339
 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

Memory state around the buggy address:
 ffff888134a8ae00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888134a8ae80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888134a8af00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff888134a8af80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888134a8b000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs error (device loop5): ext4_quota_enable:6433: inode #3: comm syz.5.317: unexpected EA_INODE flag
EXT4-fs error (device loop5): ext4_quota_enable:6436: comm syz.5.317: Bad quota inode: 3, type: 0
EXT4-fs warning (device loop5): ext4_enable_quotas:6477: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
EXT4-fs (loop5): mount failed
set_capacity_and_notify: 3 callbacks suppressed
loop5: detected capacity change from 0 to 512
EXT4-fs (loop5): Ignoring removed orlov option
EXT4-fs (loop5): Ignoring removed mblk_io_submit option
EXT4-fs (loop5): Cannot turn on journaled quota: type 0: error -13
EXT4-fs error (device loop5): ext4_clear_blocks:883: inode #13: comm syz.5.317: attempt to clear invalid blocks 2 len 1
EXT4-fs error (device loop5): ext4_mb_generate_buddy:1163: group 0, block bitmap and bg descriptor inconsistent: 218 vs 220 free clusters
EXT4-fs error (device loop5): ext4_free_branches:1030: inode #13: comm syz.5.317: invalid indirect mapped block 1819239214 (level 0)
EXT4-fs error (device loop5): ext4_free_branches:1030: inode #13: comm syz.5.317: invalid indirect mapped block 1819239214 (level 1)
EXT4-fs (loop5): 1 truncate cleaned up
EXT4-fs (loop5): mounted filesystem without journal. Opts: orlov,init_itable=0x0000000000000003,mblk_io_submit,minixdf,jqfmt=vfsv0,usrjquota=..,errors=continue. Quota mode: writeback.