EXT4-fs (loop1): 2 truncates cleaned up
EXT4-fs (loop1): mounted filesystem without journal. Opts: grpjquota=,init_itable=0x0000000000000007,dioread_nolock,auto_da_alloc=0x000000007fffffff,,errors=continue. Quota mode: writeback.
EXT4-fs error (device loop1): ext4_update_inline_data:358: inode #15: comm syz.1.153: missing inline data xattr
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x13ba/0x3940 fs/ext4/xattr.c:1736
Read of size 18446744073709551600 at addr ffff88813391f2b8 by task syz.1.153/858

CPU: 1 PID: 858 Comm: syz.1.153 Not tainted 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
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 memmove+0x2d/0x70 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x13ba/0x3940 fs/ext4/xattr.c:1736
 ext4_xattr_ibody_set+0x122/0x360 fs/ext4/xattr.c:2238
 ext4_destroy_inline_data_nolock+0x234/0x5d0 fs/ext4/inline.c:468
 ext4_convert_inline_data_to_extent fs/ext4/inline.c:633 [inline]
 ext4_try_to_write_inline_data+0x6ef/0x1190 fs/ext4/inline.c:774
 ext4_write_begin+0x243/0x12e0 fs/ext4/inode.c:1192
 ext4_da_write_begin+0x321/0xbf0 fs/ext4/inode.c:2988
 generic_perform_write+0x2b7/0x690 mm/filemap.c:3870
 ext4_buffered_write_iter+0x4ed/0x670 fs/ext4/file.c:270
 ext4_file_write_iter+0x440/0x1540 fs/ext4/file.c:-1
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x835/0xfd0 fs/read_write.c:594
 ksys_pwrite64 fs/read_write.c:701 [inline]
 __do_sys_pwrite64 fs/read_write.c:711 [inline]
 __se_sys_pwrite64 fs/read_write.c:708 [inline]
 __x64_sys_pwrite64+0x197/0x220 fs/read_write.c:708
 x64_sys_call+0xa6/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:19
 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: 0033:0x7fe431166799
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:00007fe42fbc1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fe4313dffa0 RCX: 00007fe431166799
RDX: 0000000000000f7d RSI: 0000200000000880 RDI: 0000000000000004
RBP: 00007fe4311fcbd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe4313e0038 R14: 00007fe4313dffa0 R15: 00007ffe6e4bbca8
 </TASK>

The buggy address belongs to the page:
page:ffffea0004ce47c0 refcount:2 mapcount:0 mapping:ffff8881093043d8 index:0x2 pfn:0x13391f
memcg:ffff88810be90000
aops:def_blk_aops ino:700001
flags: 0x400000000000203e(referenced|uptodate|dirty|lru|active|private|zone=1)
raw: 400000000000203e ffffea0004befd48 ffff88810be89130 ffff8881093043d8
raw: 0000000000000002 ffff88813c1b4930 00000002ffffffff ffff88810be90000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x108c48(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE), pid 858, ts 42422659813, free_ts 42335681050
 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_pages_node include/linux/gfp.h:595 [inline]
 alloc_pages_node include/linux/gfp.h:609 [inline]
 alloc_pages include/linux/gfp.h:622 [inline]
 __page_cache_alloc include/linux/pagemap.h:305 [inline]
 pagecache_get_page+0xac6/0xde0 mm/filemap.c:1955
 find_or_create_page include/linux/pagemap.h:418 [inline]
 grow_dev_page fs/buffer.c:949 [inline]
 grow_buffers fs/buffer.c:1014 [inline]
 __getblk_slow fs/buffer.c:1041 [inline]
 __getblk_gfp+0x238/0x7d0 fs/buffer.c:1336
 sb_getblk include/linux/buffer_head.h:361 [inline]
 __ext4_get_inode_loc+0x46e/0xcd0 fs/ext4/inode.c:4363
 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4471 [inline]
 __ext4_iget+0x448/0x3e50 fs/ext4/inode.c:4726
 ext4_orphan_get+0x1e4/0x630 fs/ext4/ialloc.c:1400
 ext4_orphan_cleanup+0x8a7/0x10f0 fs/ext4/orphan.c:465
 ext4_fill_super+0x84ab/0x8bd0 fs/ext4/super.c:4991
 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
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
 do_renameat2+0x8f4/0xfd0 fs/namei.c:4995
 __do_sys_rename fs/namei.c:5039 [inline]
 __se_sys_rename fs/namei.c:5037 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:5037
 x64_sys_call+0x680/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:83
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80

Memory state around the buggy address:
 ffff88813391f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88813391f200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88813391f280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff88813391f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88813391f380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs error (device loop1): ext4_validate_block_bitmap:429: comm syz.1.153: bg 0: block 8: invalid block bitmap
syz.1.153 (858) used greatest stack depth: 21664 bytes left