EXT4-fs error (device loop3): ext4_read_inode_bitmap:141: comm syz.3.417: Invalid inode bitmap blk 65548 in block_group 0
EXT4-fs error (device loop3) in ext4_free_inode:363: Corrupt filesystem
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BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x86c/0x164c fs/ext4/xattr.c:1767
Read of size 18446744073709551600 at addr ffff0000de7dd6b8 by task syz.3.417/6931

CPU: 1 UID: 0 PID: 6931 Comm: syz.3.417 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xb0/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0x8c/0xc4 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x17c/0x1ac mm/kasan/generic.c:200
 __asan_memmove+0x3c/0x84 mm/kasan/shadow.c:94
 ext4_xattr_set_entry+0x86c/0x164c fs/ext4/xattr.c:1767
 ext4_xattr_ibody_set+0x20c/0x4b4 fs/ext4/xattr.c:2277
 ext4_destroy_inline_data_nolock+0x1c8/0x4a8 fs/ext4/inline.c:471
 ext4_convert_inline_data_nolock+0x1a8/0x7dc fs/ext4/inline.c:1132
 ext4_convert_inline_data+0x390/0x4e8 fs/ext4/inline.c:2012
 ext4_setattr+0xc30/0x18f4 fs/ext4/inode.c:6107
 notify_change+0x928/0xb7c fs/attr.c:556
 do_truncate+0x1a8/0x22c fs/open.c:68
 vfs_truncate+0x3f4/0x458 fs/open.c:118
 ksys_truncate+0xe8/0x190 fs/open.c:142
 __do_sys_truncate fs/open.c:154 [inline]
 __se_sys_truncate fs/open.c:152 [inline]
 __arm64_sys_truncate+0x64/0x7c fs/open.c:152
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x60/0x1d8 arch/arm64/kernel/entry-common.c:796
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:815
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:606

The buggy address belongs to the physical page:
page: refcount:2 mapcount:0 mapping:00000000c499f27e index:0xc pfn:0x11e7dd
memcg:ffff0000c622a900
aops:def_blk_aops ino:700003 dentry name(?):""
flags: 0x5ffc00000004134(referenced|dirty|lru|active|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000004134 fffffdffc3cfcb08 fffffdffc3c73848 ffff0000c154cdd0
raw: 000000000000000c ffff0000cfce2c40 00000002ffffffff ffff0000c622a900
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000de7dd580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000de7dd600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000de7dd680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff0000de7dd700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000de7dd780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs error (device loop3) in ext4_setattr:6247: error 28