loop2: detected capacity change from 0 to 512
EXT4-fs (loop2): invalid inodes per group: 8
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BUG: KCSAN: data-race in insert_work / wq_worker_running

read-write to 0xffff888237c2c8e4 of 4 bytes by task 31220 on cpu 0:
 wq_worker_running+0x98/0x120 kernel/workqueue.c:1071
 schedule_timeout+0xcc/0x230 kernel/time/timer.c:2167
 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:572 [inline]
 synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:624 [inline]
 rcu_exp_wait_wake kernel/rcu/tree_exp.h:693 [inline]
 rcu_exp_sel_wait_wake+0x554/0x1380 kernel/rcu/tree_exp.h:727
 wait_rcu_exp_gp+0x1e/0x30 kernel/rcu/tree_exp.h:513
 process_one_work+0x434/0x860 kernel/workqueue.c:2600
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2751
 kthread+0x1d7/0x210 kernel/kthread.c:389
 ret_from_fork+0x2e/0x40 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

read to 0xffff888237c2c8e4 of 4 bytes by task 10452 on cpu 1:
 __need_more_worker kernel/workqueue.c:830 [inline]
 insert_work+0x10e/0x190 kernel/workqueue.c:1563
 __queue_work+0x722/0x980 kernel/workqueue.c:1717
 queue_work_on+0x95/0xf0 kernel/workqueue.c:1747
 __lru_add_drain_all+0x2e6/0x420 mm/swap.c:891
 lru_add_drain_all+0x10/0x20 mm/swap.c:905
 invalidate_bdev+0x5a/0x80 block/bdev.c:86
 __ext4_fill_super fs/ext4/super.c:5671 [inline]
 ext4_fill_super+0x16db/0x38b0 fs/ext4/super.c:5696
 get_tree_bdev+0x2b4/0x3b0 fs/super.c:1318
 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5728
 vfs_get_tree+0x51/0x190 fs/super.c:1519
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 10452 Comm: syz-executor.2 Not tainted 6.5.0-rc5-syzkaller-00362-ga785fd28d31f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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