EXT4-fs error (device loop4): ext4_expand_extra_isize_ea:2792: inode #14: comm syz.4.3820: corrupted in-inode xattr: bad magic number in in-inode xattr
EXT4-fs error (device loop4): ext4_clear_blocks:876: inode #14: comm syz.4.3820: attempt to clear invalid blocks 1886221359 len 1
==================================================================
BUG: KCSAN: assert: race in __block_task kernel/sched/sched.h:2770 [inline]
BUG: KCSAN: assert: race in dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7177

race at unknown origin, with assert no writes to 0xffff8881001cb1e8 of 4 bytes by task 17889 on cpu 1:
 __block_task kernel/sched/sched.h:2770 [inline]
 dequeue_entities+0x6df/0x760 kernel/sched/fair.c:7177
 pick_next_entity kernel/sched/fair.c:5627 [inline]
 pick_task_fair kernel/sched/fair.c:8856 [inline]
 pick_next_task_fair+0x7d/0x410 kernel/sched/fair.c:8876
 __pick_next_task kernel/sched/core.c:5955 [inline]
 pick_next_task kernel/sched/core.c:6477 [inline]
 __schedule+0x284/0x940 kernel/sched/core.c:6629
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0x55/0xc0 kernel/sched/core.c:6767
 futex_wait_queue kernel/futex/waitwake.c:370 [inline]
 __futex_wait+0x141/0x290 kernel/futex/waitwake.c:669
 futex_wait+0x99/0x1c0 kernel/futex/waitwake.c:697
 do_futex+0x276/0x370 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x25d/0x3a0 kernel/futex/syscalls.c:160
 __x64_sys_futex+0x78/0x90 kernel/futex/syscalls.c:160
 x64_sys_call+0x23c4/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:203
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 17889 Comm: syz.4.3820 Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
==================================================================