EXT4-fs (loop2): re-mounted 00000000-0000-0000-0000-000000000000 ro. Quota mode: writeback. ================================================================== BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lrus_cpu write to 0xffff888237d2ba28 of 8 bytes by task 24 on cpu 1: __invalidate_bh_lrus fs/buffer.c:1499 [inline] invalidate_bh_lrus_cpu+0x85/0xc0 fs/buffer.c:1544 lru_add_and_bh_lrus_drain mm/swap.c:714 [inline] lru_add_drain_per_cpu+0x62/0x80 mm/swap.c:733 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310 worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391 kthread+0x1d1/0x210 kernel/kthread.c:389 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff888237d2ba28 of 8 bytes by task 4812 on cpu 0: has_bh_in_lru+0x35/0x1f0 fs/buffer.c:1521 smp_call_function_many_cond+0x2d5/0xc20 kernel/smp.c:837 on_each_cpu_cond_mask+0x3c/0x90 kernel/smp.c:1051 on_each_cpu_cond include/linux/smp.h:105 [inline] invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1530 invalidate_bdev+0x42/0x70 block/bdev.c:100 reconfigure_super+0x439/0x5b0 fs/super.c:1106 do_remount fs/namespace.c:3047 [inline] path_mount+0x967/0xb30 fs/namespace.c:3826 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x27c/0x2d0 fs/namespace.c:4034 __x64_sys_mount+0x67/0x80 fs/namespace.c:4034 x64_sys_call+0x2c84/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:166 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: 0xffff8881007aa138 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 4812 Comm: syz.2.323 Not tainted 6.13.0-rc2-syzkaller-00036-g231825b2e1ff #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================