EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop1: detected capacity change from 2048 to 64
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1763
Read of size 18446744073709551600 at addr ffff8881a8306eb8 by task syz.1.18/5895

CPU: 1 UID: 0 PID: 5895 Comm: syz.1.18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 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_destroy_inline_data+0x83/0xe0 fs/ext4/inline.c:1806
 ext4_do_writepages+0x573/0x47a0 fs/ext4/inode.c:2828
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3043
 do_writepages+0x338/0x560 mm/page-writeback.c:2561
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x36e/0x440 mm/filemap.c:786
 mmb_fsync_noflush+0x73/0x1d0 fs/buffer.c:652
 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline]
 ext4_sync_file+0x41a/0xd00 fs/ext4/fsync.c:160
 generic_write_sync include/linux/fs.h:2666 [inline]
 ext4_buffered_write_iter+0x2c7/0x370 fs/ext4/file.c:322
 ext4_file_write_iter+0x947/0x1c70 fs/ext4/file.c:-1
 aio_write+0x5cd/0x870 fs/aio.c:1687
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2106
 __do_sys_io_submit fs/aio.c:2165 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2135
 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: 0033:0x7fd36e99e019
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:00007fd36f877028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007fd36ec25fa0 RCX: 00007fd36e99e019
RDX: 00002000000002c0 RSI: 0000000000000001 RDI: 00007fd36f856000
RBP: 00007fd36ea3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd36ec26038 R14: 00007fd36ec25fa0 R15: 00007ffed91ffdc8
 </TASK>

The buggy address belongs to the physical page:
page: refcount:2 mapcount:0 mapping:ffff888107854dc0 index:0x2 pfn:0x1a8306
memcg:ffff8881107d5480
aops:def_blk_aops ino:700001 dentry name(?):""
flags: 0x57ff58000004234(referenced|dirty|lru|workingset|private|node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff58000004234 ffffea0006b275c8 ffff88816045e850 ffff888107854dc0
raw: 0000000000000002 ffff8881b9230d20 00000002ffffffff ffff8881107d5480
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 5895, tgid 5894 (syz.1.18), ts 67749306471
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x220d/0x2280 mm/page_alloc.c:3955
 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5394
 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2486
 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline]
 alloc_pages_noprof+0xac/0x2a0 mm/mempolicy.c:2577
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2587
 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1019
 __filemap_get_folio_mpol+0x402/0x1000 mm/filemap.c:2018
 __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+0x81/0xf0 fs/ext4/inode.c:5019
 ext4_xattr_ibody_get+0x113/0x4b0 fs/ext4/xattr.c:648
 ext4_xattr_get+0x121/0x690 fs/ext4/xattr.c:709
 __vfs_getxattr+0x412/0x440 fs/xattr.c:446
 cap_inode_need_killpriv+0x45/0x60 security/commoncap.c:331
 security_inode_need_killpriv+0x85/0x240 security/security.c:2186
page last free pid 5673 tgid 5673 ts 67747614195 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_unref_folios+0xdc2/0x14e0 mm/page_alloc.c:3023
 folios_put_refs+0x9e9/0xb30 mm/folio.c:1055
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 shmem_undo_range+0x4e6/0x15d0 mm/shmem.c:1160
 shmem_truncate_range mm/shmem.c:1288 [inline]
 shmem_evict_inode+0x280/0xa80 mm/shmem.c:1419
 evict+0x624/0xb50 fs/inode.c:825
 dentry_kill+0x1b9/0x880 fs/dcache.c:826
 finish_dput+0x1a/0x260 fs/dcache.c:1001
 end_renaming fs/namei.c:4122 [inline]
 filename_renameat2+0x61b/0x9a0 fs/namei.c:6194
 __do_sys_rename fs/namei.c:6236 [inline]
 __se_sys_rename+0x55/0x2c0 fs/namei.c:6232
 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

Memory state around the buggy address:
 ffff8881a8306d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881a8306e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881a8306e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff8881a8306f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881a8306f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
