==================================================================
BUG: KASAN: use-after-free in get_max_inline_xattr_value_size+0x340/0x510 fs/ext4/inline.c:63
Read of size 4 at addr ffff888132703000 by task syz-executor.2/8012

CPU: 0 PID: 8012 Comm: syz-executor.2 Not tainted 6.1.25-syzkaller-00028-gf6707f352b54 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 get_max_inline_xattr_value_size+0x340/0x510 fs/ext4/inline.c:63
 ext4_get_max_inline_size+0x13d/0x1f0 fs/ext4/inline.c:113
 ext4_try_to_write_inline_data+0xd3/0x1420 fs/ext4/inline.c:663
 ext4_write_begin+0x200/0xfb0 fs/ext4/inode.c:1179
 ext4_da_write_begin+0x2ff/0x920 fs/ext4/inode.c:2987
 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3765
 ext4_buffered_write_iter+0x360/0x640 fs/ext4/file.c:285
 ext4_file_write_iter+0x194/0x1cf0
 call_write_iter include/linux/fs.h:2215 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x8d1/0xe80 fs/read_write.c:584
 ksys_write+0x199/0x2c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9852c7cb29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f98539420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9852d9bf80 RCX: 00007f9852c7cb29
RDX: 0000000000000001 RSI: 0000000020000280 RDI: 0000000000000004
RBP: 00007f9852cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9852d9bf80 R15: 00007ffc7cf1aef8
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0004c9c0c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x132703
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea0004e0a748 ffffea0004665348 0000000000000000
raw: 0000000000000000 00000000000c0000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x192880(GFP_NOWAIT|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 7716, tgid 7700 (syz-executor.4), ts 338173917920, free_ts 338525668949
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x213/0x220 mm/page_alloc.c:2581
 prep_new_page mm/page_alloc.c:2588 [inline]
 get_page_from_freelist+0x276c/0x2850 mm/page_alloc.c:4385
 __alloc_pages+0x3a1/0x780 mm/page_alloc.c:5662
 allocate_slab mm/slub.c:1959 [inline]
 new_slab+0xce/0x4c0 mm/slub.c:2012
 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3200
 __slab_alloc+0x5d/0xa0 mm/slub.c:3299
 slab_alloc_node mm/slub.c:3384 [inline]
 slab_alloc mm/slub.c:3426 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3433 [inline]
 kmem_cache_alloc+0x1b9/0x2c0 mm/slub.c:3442
 mempool_alloc_slab+0x1d/0x30 mm/mempool.c:512
 mempool_alloc+0x11f/0x530 mm/mempool.c:392
 bio_alloc_bioset+0x417/0x1340 block/bio.c:524
 iomap_dio_bio_iter+0xb91/0x16c0 fs/iomap/direct-io.c:323
 __iomap_dio_rw+0x1264/0x20a0 fs/iomap/direct-io.c:602
 iomap_dio_rw+0x41/0x90 fs/iomap/direct-io.c:690
 ext4_dio_write_iter fs/ext4/file.c:587 [inline]
 ext4_file_write_iter+0x1123/0x1cf0 fs/ext4/file.c:698
 do_iter_write+0x6e6/0xc50 fs/read_write.c:861
 vfs_writev+0x2a7/0x560 fs/read_write.c:934
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1493 [inline]
 free_pcp_prepare mm/page_alloc.c:1567 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3484
 free_unref_page+0x8d/0x480 mm/page_alloc.c:3580
 free_the_page mm/page_alloc.c:793 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5751
 __free_slab+0xce/0x1a0 mm/slub.c:2036
 rcu_free_slab+0x14/0x20 mm/slub.c:2043
 rcu_do_batch+0x518/0xb60 kernel/rcu/tree.c:2250
 rcu_core+0x4ee/0xf10 kernel/rcu/tree.c:2510
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2527
 __do_softirq+0x1d8/0x661 kernel/softirq.c:613

Memory state around the buggy address:
 ffff888132702f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888132702f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888132703000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff888132703080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888132703100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop2): ext4_read_block_bitmap_nowait:438: comm syz-executor.2: Invalid block bitmap block 4294967295 in block_group 0