loop6: detected capacity change from 0 to 512
EXT4-fs (loop6): orphan cleanup on readonly fs
==================================================================
BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683
Read of size 8 at addr ffff88812cc61d48 by task syz.6.1072/2004

CPU: 0 PID: 2004 Comm: syz.6.1072 Not tainted 5.15.178-syzkaller-00013-g7d1f9b5c2ff5 #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+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 __ext4_iget+0x2ee/0x3ef0 fs/ext4/inode.c:4683
 ext4_quota_enable fs/ext4/super.c:6379 [inline]
 ext4_enable_quotas+0x556/0x980 fs/ext4/super.c:6415
 ext4_orphan_cleanup+0x41f/0x1060 fs/ext4/orphan.c:432
 ext4_fill_super+0x8dc8/0x96e0 fs/ext4/super.c:4966
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 ext4_mount+0x34/0x40 fs/ext4/super.c:6594
 legacy_get_tree+0xf1/0x190 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: 0033:0x7f94251d890a
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:00007f9423840e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9423840ef0 RCX: 00007f94251d890a
RDX: 0000400000000000 RSI: 0000400000000200 RDI: 00007f9423840eb0
RBP: 0000400000000000 R08: 00007f9423840ef0 R09: 0000000002000003
R10: 0000000002000003 R11: 0000000000000246 R12: 0000400000000200
R13: 00007f9423840eb0 R14: 00000000000004e6 R15: 0000400000000040
 </TASK>

Allocated by task 0:
(stack is not available)

The buggy address belongs to the object at ffff88812cc61840
 which belongs to the cache f2fs_inode_cache of size 1424
The buggy address is located 1288 bytes inside of
 1424-byte region [ffff88812cc61840, ffff88812cc61dd0)
The buggy address belongs to the page:
page:ffffea0004b31800 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812cc65af0 pfn:0x12cc60
head:ffffea0004b31800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888107fb3b00
raw: ffff88812cc65af0 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 1457, ts 48879885334, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485
 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5780
 allocate_slab mm/slub.c:1932 [inline]
 new_slab+0x9a/0x4e0 mm/slub.c:1995
 ___slab_alloc+0x39e/0x830 mm/slub.c:3028
 __slab_alloc+0x4a/0x90 mm/slub.c:3115
 slab_alloc_node mm/slub.c:3206 [inline]
 slab_alloc mm/slub.c:3250 [inline]
 kmem_cache_alloc+0x139/0x250 mm/slub.c:3255
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2802 [inline]
 f2fs_alloc_inode+0x26/0x340 fs/f2fs/super.c:1406
 alloc_inode fs/inode.c:236 [inline]
 iget_locked+0x174/0x860 fs/inode.c:1283
 f2fs_iget+0x55/0x4fe0 fs/f2fs/inode.c:512
 f2fs_fill_super+0x66aa/0x8190 fs/f2fs/super.c:4369
 mount_bdev+0x282/0x3b0 fs/super.c:1400
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4618
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1530
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812cc61c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812cc61c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88812cc61d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                              ^
 ffff88812cc61d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812cc61e00: fc fc fc fc fc fc fc fc fc fc 00 00 00 00 00 00
==================================================================
EXT4-fs warning (device loop6): ext4_enable_quotas:6423: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix.
EXT4-fs (loop6): Cannot turn on quotas: error -13
EXT4-fs error (device loop6): ext4_orphan_get:1406: comm syz.6.1072: couldn't read orphan inode 26 (err -116)
EXT4-fs (loop6): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.