loop0: detected capacity change from 0 to 512
EXT4-fs (loop0): mounting ext3 file system using the ext4 subsystem
EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs error (device loop0): ext4_free_branches:1023: inode #13: comm syz.0.0: invalid indirect mapped block 4294901760 (level 0)
EXT4-fs error (device loop0): ext4_free_branches:1023: inode #13: comm syz.0.0: invalid indirect mapped block 2185560079 (level 0)
EXT4-fs error (device loop0): ext4_do_update_inode:5742: inode #13: comm syz.0.0: corrupted inode contents
EXT4-fs error (device loop0): ext4_dirty_inode:6639: inode #13: comm syz.0.0: mark_inode_dirty error
EXT4-fs error (device loop0): ext4_free_branches:1023: inode #13: comm syz.0.0: invalid indirect mapped block 65535 (level 2)
EXT4-fs error (device loop0): ext4_do_update_inode:5742: inode #13: comm syz.0.0: corrupted inode contents
EXT4-fs error (device loop0): ext4_truncate:4691: inode #13: comm syz.0.0: mark_inode_dirty error
EXT4-fs error (device loop0) in ext4_setattr:6172: Corrupt filesystem
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1763
Read of size 18446744073709551600 at addr ffff88800e5f86b8 by task syz.0.0/5333

CPU: 0 UID: 0 PID: 5333 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200
 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94
 ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1763
 ext4_xattr_ibody_set+0x262/0x710 fs/ext4/xattr.c:2275
 ext4_destroy_inline_data_nolock+0x23a/0x5f0 fs/ext4/inline.c:472
 ext4_convert_inline_data_to_extent+0x549/0xde0 fs/ext4/inline.c:631
 ext4_write_begin+0x349/0x1850 fs/ext4/inode.c:1315
 generic_perform_write+0x2d5/0x8f0 mm/filemap.c:4358
 ext4_buffered_write_iter+0xcb/0x370 fs/ext4/file.c:316
 ext4_file_write_iter+0x947/0x1c70 fs/ext4/file.c:-1
 iter_file_splice_write+0xa31/0x1240 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x57b/0xcb0 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x52e/0x7c0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1432 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f621a19ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f621b123fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f621a415fa0 RCX: 00007f621a19ce59
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f621a232e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f621a416038 R14: 00007f621a415fa0 R15: 00007ffecdd1d508
 </TASK>

The buggy address belongs to the physical page:
page: refcount:3 mapcount:0 mapping:ffff88801cc25940 index:0xc pfn:0xe5f8
memcg:ffff888000bef580
aops:def_blk_aops ino:700000 dentry name(?):""
flags: 0xfff18000004214(referenced|dirty|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000004214 0000000000000000 dead000000000122 ffff88801cc25940
raw: 000000000000000c ffff888043f31d20 00000003ffffffff ffff888000bef580
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5334, tgid 5332 (syz.0.0), ts 108952056147, free_ts 104952932462
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x21fa/0x2270 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 alloc_pages_mpol+0x212/0x380 mm/mempolicy.c:2490
 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline]
 alloc_pages_noprof+0xac/0x2a0 mm/mempolicy.c:2581
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2591
 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013
 __filemap_get_folio_mpol+0x402/0x1000 mm/filemap.c:2012
 __filemap_get_folio include/linux/pagemap.h:761 [inline]
 grow_dev_folio fs/buffer.c:960 [inline]
 grow_buffers fs/buffer.c:1026 [inline]
 __getblk_slow fs/buffer.c:1044 [inline]
 bdev_getblk+0x1f4/0x6e0 fs/buffer.c:1439
 __getblk include/linux/buffer_head.h:382 [inline]
 sb_getblk include/linux/buffer_head.h:388 [inline]
 __ext4_get_inode_loc+0x56c/0xf40 fs/ext4/inode.c:4891
 ext4_get_inode_loc fs/ext4/inode.c:5019 [inline]
 ext4_reserve_inode_write+0x18b/0x360 fs/ext4/inode.c:6424
 __ext4_mark_inode_dirty+0x13e/0x700 fs/ext4/inode.c:6602
 ext4_mkdir+0x4fa/0xca0 fs/ext4/namei.c:3025
 vfs_mkdir+0x406/0x620 fs/namei.c:5272
 filename_mkdirat+0x285/0x510 fs/namei.c:5305
 __do_sys_mkdir fs/namei.c:5332 [inline]
 __se_sys_mkdir+0x34/0x150 fs/namei.c:5329
page last free pid 28 tgid 28 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
 __folio_put+0x4b3/0x590 mm/swap.c:112
 folio_put include/linux/mm.h:2124 [inline]
 migrate_folio_done mm/migrate.c:1199 [inline]
 migrate_folio_move mm/migrate.c:1430 [inline]
 migrate_folios_move mm/migrate.c:1738 [inline]
 migrate_pages_batch+0x3be1/0x4e50 mm/migrate.c:1994
 migrate_pages_sync mm/migrate.c:2024 [inline]
 migrate_pages+0x1b9f/0x2920 mm/migrate.c:2133
 compact_zone+0x310e/0x4a30 mm/compaction.c:2669
 compact_node+0x210/0x310 mm/compaction.c:2938
 kcompactd+0xc0b/0x12c0 mm/compaction.c:3236
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff88800e5f8580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88800e5f8600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88800e5f8680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff88800e5f8700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88800e5f8780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================