EXT4-fs (loop2): feature flags set on rev 0 fs, running e2fsck is recommended EXT4-fs (loop2): bad geometry: block count 208 exceeds size of device (64 blocks) ================================================================== BUG: KCSAN: data-race in insert_work / wq_worker_running read-write to 0xffff888237d2c8e4 of 4 bytes by task 901 on cpu 1: wq_worker_running+0x98/0x120 kernel/workqueue.c:1068 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:2597 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2748 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 0xffff888237d2c8e4 of 4 bytes by task 3882 on cpu 0: __need_more_worker kernel/workqueue.c:827 [inline] insert_work+0x10e/0x190 kernel/workqueue.c:1560 __queue_work+0x722/0x980 kernel/workqueue.c:1714 queue_work_on+0x95/0xf0 kernel/workqueue.c:1744 __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: 0 PID: 3882 Comm: syz-executor.2 Not tainted 6.5.0-rc4-syzkaller-00174-gc1a515d3c027 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 ==================================================================