================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / move_expired_inodes read-write to 0xffff8881064033f0 of 8 bytes by task 1770 on cpu 1: move_expired_inodes+0x17b/0x410 fs/fs-writeback.c:1405 queue_io+0xe1/0x2e0 fs/fs-writeback.c:1457 wb_writeback+0x22a/0x6e0 fs/fs-writeback.c:2090 wb_do_writeback fs/fs-writeback.c:2239 [inline] wb_workfn+0x1a8/0x8d0 fs/fs-writeback.c:2279 process_one_work kernel/workqueue.c:2630 [inline] process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703 worker_thread+0x525/0x730 kernel/workqueue.c:2784 kthread+0x1d7/0x210 kernel/kthread.c:388 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 read to 0xffff8881064033f0 of 8 bytes by task 29665 on cpu 0: __mark_inode_dirty+0x199/0x7d0 fs/fs-writeback.c:2474 mark_inode_dirty_sync include/linux/fs.h:2311 [inline] dquot_free_space include/linux/quotaops.h:385 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_new_blocks+0x16a2/0x21e0 fs/ext4/mballoc.c:6235 ext4_ext_map_blocks+0x1086/0x3640 fs/ext4/extents.c:4285 ext4_map_blocks+0x704/0xf60 fs/ext4/inode.c:621 ext4_alloc_file_blocks+0x285/0x6f0 fs/ext4/extents.c:4462 ext4_zero_range+0x30e/0x880 fs/ext4/extents.c:4573 ext4_fallocate+0x3ab/0x1190 fs/ext4/extents.c:4722 vfs_fallocate+0x378/0x3e0 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0x79/0xc0 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x0000000000000007 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 29665 Comm: syz-executor.1 Not tainted 6.6.0-syzkaller-15859-g89cdf9d55601 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 ==================================================================