loop0: detected capacity change from 0 to 512
EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!
EXT4-fs (loop0): encrypted files will use data=ordered instead of data journaling mode
EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2863: Unable to expand inode 15. Delete some EAs or run e2fsck.
EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x8ce/0x1f60 fs/ext4/xattr.c:1781
Read of size 18446744073709551572 at addr ffff888043210050 by task syz.0.0/5334

CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94
 ext4_xattr_set_entry+0x8ce/0x1f60 fs/ext4/xattr.c:1781
 ext4_xattr_block_set+0xa39/0x3980 fs/ext4/xattr.c:2028
 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline]
 ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837
 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline]
 __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:5984
 __mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
 mark_inode_dirty include/linux/fs.h:2474 [inline]
 ext4_setattr+0x63f/0x1bc0 fs/ext4/inode.c:5508
 notify_change+0xbca/0xe90 fs/attr.c:503
 chown_common+0x501/0x850 fs/open.c:793
 do_fchownat+0x16a/0x240 fs/open.c:824
 __do_sys_lchown fs/open.c:849 [inline]
 __se_sys_lchown fs/open.c:847 [inline]
 __x64_sys_lchown+0x85/0xa0 fs/open.c:847
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff9d657e719
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:00007ff9d7301038 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007ff9d6735f80 RCX: 00007ff9d657e719
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000d40
RBP: 00007ff9d65f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff9d6735f80 R15: 00007ffe31ae1898
 </TASK>

Allocated by task 5334:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:257 [inline]
 __do_kmalloc_node mm/slub.c:4264 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4283
 kmemdup_noprof+0x2a/0x60 mm/util.c:133
 ext4_xattr_block_set+0x88b/0x3980 fs/ext4/xattr.c:1976
 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline]
 ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837
 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline]
 __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:5984
 __mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
 mark_inode_dirty include/linux/fs.h:2474 [inline]
 ext4_setattr+0x63f/0x1bc0 fs/ext4/inode.c:5508
 notify_change+0xbca/0xe90 fs/attr.c:503
 chown_common+0x501/0x850 fs/open.c:793
 do_fchownat+0x16a/0x240 fs/open.c:824
 __do_sys_lchown fs/open.c:849 [inline]
 __se_sys_lchown fs/open.c:847 [inline]
 __x64_sys_lchown+0x85/0xa0 fs/open.c:847
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888043210000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 80 bytes inside of
 1024-byte region [ffff888043210000, ffff888043210400)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x43210
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000
head: 04fff00000000040 ffff88801ac41dc0 dead000000000122 0000000000000000
head: 0000000000000000 0000000080080008 00000001f5000000 0000000000000000
head: 04fff00000000002 ffffea00010c8401 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5334, tgid 5333 (syz.0.0), ts 72538785753, free_ts 72536519917
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0x3649/0x3790 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x140 mm/slub.c:2412
 allocate_slab+0x5a/0x2f0 mm/slub.c:2578
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
 __slab_alloc+0x58/0xa0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 __do_kmalloc_node mm/slub.c:4263 [inline]
 __kmalloc_node_track_caller_noprof+0x281/0x440 mm/slub.c:4283
 kmemdup_noprof+0x2a/0x60 mm/util.c:133
 ext4_xattr_block_set+0x88b/0x3980 fs/ext4/xattr.c:1976
 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline]
 ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837
 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline]
 __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:5984
 __mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
page last free pid 5334 tgid 5333 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0xdf9/0x1140 mm/page_alloc.c:2657
 stack_depot_save_flags+0x6f6/0x830 lib/stackdepot.c:666
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x51/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141
 alloc_buffer_head+0x2a/0x290 fs/buffer.c:3020
 folio_alloc_buffers+0x2bc/0x660 fs/buffer.c:928
 grow_dev_folio fs/buffer.c:1068 [inline]
 grow_buffers fs/buffer.c:1109 [inline]
 __getblk_slow fs/buffer.c:1135 [inline]
 bdev_getblk+0x2a6/0x550 fs/buffer.c:1437
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 ext4_getblk+0x303/0x800 fs/ext4/inode.c:859
 ext4_xattr_inode_write fs/ext4/xattr.c:1421 [inline]
 ext4_xattr_inode_lookup_create+0x13b2/0x1f90 fs/ext4/xattr.c:1602
 ext4_xattr_block_set+0x274/0x3980 fs/ext4/xattr.c:1916
 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline]
 ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837
 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline]
 __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952
 ext4_dirty_inode+0xce/0x110 fs/ext4/inode.c:5984
 __mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493

Memory state around the buggy address:
 ffff88804320ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88804320ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888043210000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ffff888043210080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888043210100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================