EXT4-fs (loop3): Ignoring removed nomblk_io_submit option
EXT4-fs (loop3): mounted filesystem without journal. Opts: noblock_validity,bsddf,sysvgroups,norecovery,debug_want_extra_isize=0x0000000000000080,orlov,nogrpid,noauto_da_alloc,nomblk_io_submit,,errors=continue. Quota mode: none.
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BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1390/0x3d30 fs/ext4/xattr.c:1747
Read of size 18446744073709551552 at addr ffff888077ae62e8 by task syz.3.1383/10087

CPU: 1 PID: 10087 Comm: syz.3.1383 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x27b/0x290 mm/kasan/generic.c:189
 memmove+0x25/0x60 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x1390/0x3d30 fs/ext4/xattr.c:1747
 ext4_xattr_ibody_set+0x112/0x330 fs/ext4/xattr.c:2252
 ext4_xattr_move_to_block fs/ext4/xattr.c:2639 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2707 [inline]
 ext4_expand_extra_isize_ea+0xf9a/0x19a0 fs/ext4/xattr.c:2799
 __ext4_expand_extra_isize+0x301/0x3e0 fs/ext4/inode.c:5887
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5930 [inline]
 __ext4_mark_inode_dirty+0x469/0x700 fs/ext4/inode.c:6008
 ext4_dirty_inode+0xbf/0x100 fs/ext4/inode.c:6040
 __mark_inode_dirty+0x2b0/0xc60 fs/fs-writeback.c:2464
 generic_update_time+0x1cd/0x1f0 fs/inode.c:1881
 inode_update_time fs/inode.c:1894 [inline]
 file_update_time+0x38b/0x400 fs/inode.c:2083
 ext4_write_checks+0x240/0x2c0 fs/ext4/file.c:247
 ext4_buffered_write_iter+0xb3/0x3b0 fs/ext4/file.c:263
 ext4_file_write_iter+0x773/0x17b0 fs/ext4/file.c:-1
 do_iter_readv_writev+0x497/0x600 fs/read_write.c:-1
 do_iter_write+0x205/0x7b0 fs/read_write.c:855
 vfs_writev fs/read_write.c:928 [inline]
 do_pwritev+0x204/0x340 fs/read_write.c:1025
 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: 0033:0x7f7d31abbbe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7d2fd23038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f7d31ce2fa0 RCX: 00007f7d31abbbe9
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000005
RBP: 00007f7d31b3ee19 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000000040e7b R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d31ce3038 R14: 00007f7d31ce2fa0 R15: 00007ffc45cb8078
 </TASK>

The buggy address belongs to the page:
page:ffffea0001deb980 refcount:3 mapcount:1 mapping:ffff8881408d7270 index:0x2 pfn:0x77ae6
memcg:ffff888029f10000
aops:def_blk_aops ino:700003
flags: 0xfff0000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff0000002203e ffffea00014da148 ffffea0001a22cc8 ffff8881408d7270
raw: 0000000000000002 ffff88805f89d000 0000000300000000 ffff888029f10000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x108c40(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL), pid 10087, ts 592147145019, free_ts 592046548696
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474
 __page_cache_alloc+0xd2/0x3f0 mm/filemap.c:1022
 pagecache_get_page+0x986/0xef0 mm/filemap.c:1940
 find_or_create_page include/linux/pagemap.h:420 [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+0x249/0xb70 fs/buffer.c:1336
 sb_getblk_gfp include/linux/buffer_head.h:368 [inline]
 ext4_sb_breadahead_unmovable+0x68/0xe0 fs/ext4/super.c:239
 __ext4_get_inode_loc+0x97b/0xcd0 fs/ext4/inode.c:4404
 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4434 [inline]
 __ext4_iget+0x44a/0x3d90 fs/ext4/inode.c:4684
 ext4_fill_super+0x77d5/0x9a00 fs/ext4/super.c:4839
 mount_bdev+0x287/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3014
 do_mount fs/namespace.c:3357 [inline]
 __do_sys_mount fs/namespace.c:3565 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542
 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
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page_list+0x122/0x7e0 mm/page_alloc.c:3433
 release_pages+0x184b/0x1bb0 mm/swap.c:963
 __pagevec_release+0x6d/0xe0 mm/swap.c:983
 pagevec_release include/linux/pagevec.h:81 [inline]
 __invalidate_mapping_pages+0x4e4/0x5e0 mm/truncate.c:509
 btrfs_close_bdev fs/btrfs/volumes.c:1186 [inline]
 btrfs_close_one_device fs/btrfs/volumes.c:1210 [inline]
 close_fs_devices+0x443/0x930 fs/btrfs/volumes.c:1253
 btrfs_close_devices+0xc2/0x500 fs/btrfs/volumes.c:1268
 open_ctree+0x730/0x3250 fs/btrfs/disk-io.c:3702
 btrfs_fill_super+0x1c2/0x2e0 fs/btrfs/super.c:1387
 btrfs_mount_root+0x857/0x8c0 fs/btrfs/super.c:1751
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 fc_mount fs/namespace.c:996 [inline]
 vfs_kern_mount+0xba/0x150 fs/namespace.c:1026
 btrfs_mount+0x2d7/0xa50 fs/btrfs/super.c:1811
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530

Memory state around the buggy address:
 ffff888077ae6180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888077ae6200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888077ae6280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                          ^
 ffff888077ae6300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888077ae6380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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