EXT4-fs error (device loop1) in ext4_mb_clear_bb:6185: Corrupt filesystem
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BUG: KASAN: out-of-bounds in ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline]
BUG: KASAN: out-of-bounds in ext4_ext_remove_space+0x1e04/0x4db0 fs/ext4/extents.c:2933
Read of size 18446744073709551544 at addr ffff88806f4ea054 by task syz-executor.1/11416

CPU: 1 PID: 11416 Comm: syz-executor.1 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 print_address_description+0x63/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
 memmove+0x25/0x60 mm/kasan/shadow.c:54
 ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline]
 ext4_ext_remove_space+0x1e04/0x4db0 fs/ext4/extents.c:2933
 ext4_punch_hole+0x7c0/0xc10 fs/ext4/inode.c:4099
 ext4_fallocate+0x30a/0x20c0 fs/ext4/extents.c:4742
 vfs_fallocate+0x54a/0x6b0 fs/open.c:308
 do_vfs_ioctl+0x2317/0x2b70 fs/ioctl.c:853
 __do_sys_ioctl fs/ioctl.c:872 [inline]
 __se_sys_ioctl+0x81/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7621e3de69
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:00007f76211be0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7621f6bf80 RCX: 00007f7621e3de69
RDX: 0000000020000080 RSI: 000000004030582b RDI: 0000000000000004
RBP: 00007f7621e8a47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f7621f6bf80 R15: 00007fff043c4818
 </TASK>

The buggy address belongs to the page:
page:ffffea0001bd3a80 refcount:2 mapcount:0 mapping:ffff88814089daf0 index:0x11 pfn:0x6f4ea
memcg:ffff888074144000
aops:def_blk_aops ino:700001
flags: 0xfff00000002036(referenced|uptodate|lru|active|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002036 ffffea00017b6fc8 ffff888024608030 ffff88814089daf0
raw: 0000000000000011 ffff8880640a29f8 00000002ffffffff ffff888074144000
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 11416, ts 365620791909, free_ts 365013087076
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423
 __page_cache_alloc+0xd4/0x4a0 mm/filemap.c:1022
 pagecache_get_page+0xa91/0x1010 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+0x22a/0xaf0 fs/buffer.c:1336
 sb_getblk_gfp include/linux/buffer_head.h:368 [inline]
 ext4_ext_grow_indepth fs/ext4/extents.c:1328 [inline]
 ext4_ext_create_new_leaf fs/ext4/extents.c:1429 [inline]
 ext4_ext_insert_extent+0xfdf/0x4e60 fs/ext4/extents.c:2099
 ext4_ext_map_blocks+0x1d5b/0x7630 fs/ext4/extents.c:4339
 ext4_map_blocks+0xa66/0x1c70 fs/ext4/inode.c:672
 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:815
 ext4_block_write_begin+0x6b0/0x13a0 fs/ext4/inode.c:1100
 ext4_write_begin+0x6c6/0x15f0
 ext4_da_write_begin+0x342/0xb60 fs/ext4/inode.c:2974
 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785
 ext4_buffered_write_iter+0x227/0x360 fs/ext4/file.c:268
 ext4_file_write_iter+0x87c/0x1990
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xacd/0xe50 fs/read_write.c:594
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+0xc34/0xcf0 mm/page_alloc.c:3317
 free_unref_page_list+0x1f7/0x8e0 mm/page_alloc.c:3433
 release_pages+0x1bb9/0x1f40 mm/swap.c:963
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:338
 exit_mmap+0x3cd/0x670 mm/mmap.c:3188
 __mmput+0x112/0x3b0 kernel/fork.c:1126
 exit_mm+0x688/0x7f0 kernel/exit.c:550
 do_exit+0x626/0x2480 kernel/exit.c:861
 do_group_exit+0x144/0x310 kernel/exit.c:996
 get_signal+0xc66/0x14e0 kernel/signal.c:2897
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Memory state around the buggy address:
 ffff88806f4e9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806f4e9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88806f4ea000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ffff88806f4ea080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806f4ea100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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