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BUG: KCSAN: data-race in loop_kthread_worker_fn / mm_update_next_owner
read-write to 0xffff88810e5f002c of 4 bytes by task 26112 on cpu 0:
loop_kthread_worker_fn+0x26/0x40 drivers/block/loop.c:931
kthread+0x1fd/0x220 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
read to 0xffff88810e5f002c of 4 bytes by task 26113 on cpu 1:
mm_update_next_owner+0x1d9/0x4e0 kernel/exit.c:388
exit_mm+0x327/0x420 kernel/exit.c:500
do_exit+0x41f/0x1690 kernel/exit.c:812
do_group_exit+0x16f/0x170 kernel/exit.c:922
__do_sys_exit_group+0xb/0x10 kernel/exit.c:933
__se_sys_exit_group+0x5/0x10 kernel/exit.c:931
__x64_sys_exit_group+0x16/0x20 kernel/exit.c:931
do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 26113 Comm: syz-executor.1 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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