loop0: detected capacity change from 0 to 2048
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
EXT4-fs error (device loop0): ext4_xattr_ibody_get:619: inode #18: comm syz-executor.0: corrupted in-inode xattr
==================================================================
BUG: KASAN: use-after-free in get_max_inline_xattr_value_size+0x36e/0x510 fs/ext4/inline.c:62
Read of size 4 at addr ffff8881102d0004 by task syz-executor.0/444

CPU: 0 PID: 444 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller-00071-gb1644a0031cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:395
 kasan_report+0x13c/0x170 mm/kasan/report.c:495
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 get_max_inline_xattr_value_size+0x36e/0x510 fs/ext4/inline.c:62
 ext4_get_max_inline_size+0x13d/0x1f0 fs/ext4/inline.c:113
 ext4_try_to_write_inline_data+0xd3/0x1420 fs/ext4/inline.c:663
 ext4_write_begin+0x200/0xfb0 fs/ext4/inode.c:1178
 ext4_da_write_begin+0x2ff/0x920 fs/ext4/inode.c:2986
 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3754
 ext4_buffered_write_iter+0x360/0x640 fs/ext4/file.c:285
 ext4_file_write_iter+0x194/0x1cf0
 call_write_iter include/linux/fs.h:2205 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x893/0xe30 fs/read_write.c:584
 ksys_write+0x199/0x2c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1fcd27cb29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1fce0bf0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1fcd39bf80 RCX: 00007f1fcd27cb29
RDX: 0000000000000001 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00007f1fcd2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1fcd39bf80 R15: 00007ffcf1df6848
 </TASK>

The buggy address belongs to the physical page:
page:ffffea000440b400 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x1102d0
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea00045cda08 ffffea000440a588 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 402, tgid 402 (sshd), ts 33054120800, free_ts 33274806243
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e2/0x1f0 mm/page_alloc.c:2533
 prep_new_page mm/page_alloc.c:2540 [inline]
 get_page_from_freelist+0x2e7a/0x2f50 mm/page_alloc.c:4292
 __alloc_pages+0x3c2/0x7d0 mm/page_alloc.c:5559
 __folio_alloc+0x15/0x40 mm/page_alloc.c:5591
 __folio_alloc_node include/linux/gfp.h:246 [inline]
 folio_alloc include/linux/gfp.h:275 [inline]
 alloc_page_vma include/linux/gfp.h:284 [inline]
 do_anonymous_page mm/memory.c:4123 [inline]
 handle_pte_fault mm/memory.c:4962 [inline]
 __handle_mm_fault mm/memory.c:5106 [inline]
 handle_mm_fault+0x1cdb/0x2c70 mm/memory.c:5227
 do_user_addr_fault arch/x86/mm/fault.c:1428 [inline]
 handle_page_fault arch/x86/mm/fault.c:1519 [inline]
 exc_page_fault+0x454/0x640 arch/x86/mm/fault.c:1575
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1460 [inline]
 free_pcp_prepare mm/page_alloc.c:1533 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3388
 free_unref_page_list+0xf6/0x6c0 mm/page_alloc.c:3530
 release_pages+0xf7f/0xfe0 mm/swap.c:1055
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:314
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu mm/mmu_gather.c:261 [inline]
 tlb_finish_mmu+0x1e0/0x3f0 mm/mmu_gather.c:361
 unmap_region+0x29f/0x2f0 mm/mmap.c:2191
 do_mas_align_munmap+0x90f/0x1170 mm/mmap.c:2444
 do_mas_munmap+0x23e/0x2b0 mm/mmap.c:2502
 __vm_munmap+0x265/0x370 mm/mmap.c:2779
 __do_sys_munmap mm/mmap.c:2804 [inline]
 __se_sys_munmap mm/mmap.c:2801 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:2801
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff8881102cff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881102cff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881102d0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff8881102d0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881102d0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:438: comm syz-executor.0: Invalid block bitmap block 4294967295 in block_group 0