EXT4-fs (loop5): Ignoring removed bh option
EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled
[EXT4 FS bs=4096, gc=1, bpg=524288, ipg=32, mo=a842c018, mo2=0003]
System zones: 0-5
==================================================================
BUG: KASAN: use-after-free in check_igot_inode fs/ext4/inode.c:-1 [inline]
BUG: KASAN: use-after-free in __ext4_iget+0x381/0x44c0 fs/ext4/inode.c:4805
Read of size 8 at addr ffff88811a737eb8 by task syz.5.108/830

CPU: 1 PID: 830 Comm: syz.5.108 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 check_igot_inode fs/ext4/inode.c:-1 [inline]
 __ext4_iget+0x381/0x44c0 fs/ext4/inode.c:4805
 ext4_quota_enable fs/ext4/super.c:6451 [inline]
 ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6487
 ext4_fill_super+0x84ad/0x8d70 fs/ext4/super.c:5064
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 ext4_mount+0x34/0x40 fs/ext4/super.c:6666
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f371c0770ca
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:00007f371aacfe58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f371aacfee0 RCX: 00007f371c0770ca
RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007f371aacfea0
RBP: 0000200000000100 R08: 00007f371aacfee0 R09: 0000000002800000
R10: 0000000002800000 R11: 0000000000000246 R12: 0000200000000280
R13: 00007f371aacfea0 R14: 0000000000000be0 R15: 00002000000001c0

Allocated by task 758:
 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:430 [inline]
 __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:463
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc+0x162/0x2d0 mm/slub.c:2965
 radix_tree_node_alloc+0x18e/0x380 lib/radix-tree.c:251
 __radix_tree_create lib/radix-tree.c:622 [inline]
 radix_tree_insert+0x1cc/0x5e0 lib/radix-tree.c:710
 __insert_free_nid fs/f2fs/node.c:2208 [inline]
 add_free_nid+0x231/0x6c0 fs/f2fs/node.c:2354
 scan_nat_page fs/f2fs/node.c:2410 [inline]
 __f2fs_build_free_nids fs/f2fs/node.c:2516 [inline]
 f2fs_build_free_nids+0xeb3/0x1410 fs/f2fs/node.c:2554
 f2fs_build_node_manager+0x164a/0x1da0 fs/f2fs/node.c:3341
 f2fs_fill_super+0x4a70/0x73f0 fs/f2fs/super.c:4323
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 19:
 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:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1600 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1626
 slab_free mm/slub.c:3208 [inline]
 kmem_cache_free+0x100/0x2d0 mm/slub.c:3224
 radix_tree_node_rcu_free+0x72/0x80 lib/radix-tree.c:302
 rcu_do_batch+0x4ef/0xab0 kernel/rcu/tree.c:2494
 rcu_core+0x577/0xd80 kernel/rcu/tree.c:2735
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2748
 __do_softirq+0x255/0x563 kernel/softirq.c:309

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 kernel/rcu/tree.c:2980 [inline]
 call_rcu+0x11a/0x10b0 kernel/rcu/tree.c:3054
 radix_tree_node_free lib/radix-tree.c:308 [inline]
 delete_node+0x1ce/0xa60 lib/radix-tree.c:571
 __radix_tree_delete+0x257/0x3c0 lib/radix-tree.c:1376
 radix_tree_delete_item+0x257/0x360 lib/radix-tree.c:1427
 radix_tree_delete+0x1f/0x30 lib/radix-tree.c:1444
 __remove_free_nid fs/f2fs/node.c:2227 [inline]
 f2fs_destroy_node_manager+0x3bb/0x1000 fs/f2fs/node.c:3359
 f2fs_put_super+0x6d3/0xc20 fs/f2fs/super.c:1643
 generic_shutdown_super+0x149/0x320 fs/super.c:465
 kill_block_super+0x7f/0xf0 fs/super.c:1469
 kill_f2fs_super+0x303/0x3b0 fs/f2fs/super.c:4630
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

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 kernel/rcu/tree.c:2980 [inline]
 call_rcu+0x11a/0x10b0 kernel/rcu/tree.c:3054
 xa_node_free lib/xarray.c:258 [inline]
 xas_delete_node lib/xarray.c:494 [inline]
 update_node lib/xarray.c:758 [inline]
 xas_store+0xefb/0x17f0 lib/xarray.c:843
 page_cache_delete_batch mm/filemap.c:342 [inline]
 delete_from_page_cache_batch+0x591/0x960 mm/filemap.c:363
 truncate_inode_pages_range+0x76f/0x16d0 mm/truncate.c:363
 f2fs_recover_fsync_data+0x7798/0x8240 fs/f2fs/recovery.c:882
 f2fs_fill_super+0x6170/0x73f0 fs/f2fs/super.c:4440
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff88811a737c80
 which belongs to the cache radix_tree_node of size 576
The buggy address is located 568 bytes inside of
 576-byte region [ffff88811a737c80, ffff88811a737ec0)
The buggy address belongs to the page:
page:ffffea000469cd00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a734
head:ffffea000469cd00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 ffffea000469e700 0000000200000002 ffff88810004cf00
raw: 0000000000000000 0000000000170017 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 0x1d2010(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 306, ts 24528066267, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x179/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x223b/0x23d0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x290/0x620 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2a6/0x450 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc+0x1ac/0x2d0 mm/slub.c:2965
 radix_tree_node_alloc+0x80/0x380 lib/radix-tree.c:274
 __radix_tree_create lib/radix-tree.c:622 [inline]
 radix_tree_insert+0x1cc/0x5e0 lib/radix-tree.c:710
 __init_nat_entry fs/f2fs/node.c:191 [inline]
 cache_nat_entry fs/f2fs/node.c:444 [inline]
 f2fs_get_node_info+0xa1e/0x1230 fs/f2fs/node.c:617
 read_node_page+0x32f/0x560 fs/f2fs/node.c:1379
 __get_node_page+0x161/0xac0 fs/f2fs/node.c:1439
 f2fs_get_node_page+0x21/0x30 fs/f2fs/node.c:1488
 do_read_inode fs/f2fs/inode.c:365 [inline]
 f2fs_iget+0x6db/0x4b60 fs/f2fs/inode.c:521
 f2fs_fill_super+0x4fda/0x73f0 fs/f2fs/super.c:4358
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88811a737d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811a737e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811a737e80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                                        ^
 ffff88811a737f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88811a737f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
EXT4-fs warning (device loop5): ext4_enable_quotas:6495: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop5): mount failed