================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / move_expired_inodes read-write to 0xffff888107ccc1c0 of 8 bytes by task 59 on cpu 1: move_expired_inodes+0x17b/0x410 fs/fs-writeback.c:1429 queue_io+0xe1/0x2e0 fs/fs-writeback.c:1481 wb_writeback+0x22f/0x720 fs/fs-writeback.c:2123 wb_do_writeback fs/fs-writeback.c:2274 [inline] wb_workfn+0x1a8/0x940 fs/fs-writeback.c:2314 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3312 worker_thread+0x526/0x730 kernel/workqueue.c:3393 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 0xffff888107ccc1c0 of 8 bytes by task 9005 on cpu 0: __mark_inode_dirty+0x19f/0x7e0 fs/fs-writeback.c:2508 mark_inode_dirty_sync include/linux/fs.h:2409 [inline] dquot_free_space include/linux/quotaops.h:380 [inline] dquot_free_block include/linux/quotaops.h:390 [inline] ext4_mb_new_blocks+0x164e/0x2020 fs/ext4/mballoc.c:6267 ext4_ext_map_blocks+0x10a1/0x33b0 fs/ext4/extents.c:4318 ext4_map_blocks+0x72a/0xf50 fs/ext4/inode.c:623 ext4_alloc_file_blocks+0x285/0x700 fs/ext4/extents.c:4495 ext4_zero_range+0x77c/0x890 fs/ext4/extents.c:4658 ext4_fallocate+0x3af/0x1190 fs/ext4/extents.c:4757 vfs_fallocate+0x380/0x3e0 fs/open.c:330 do_vfs_ioctl+0x1481/0x1560 fs/ioctl.c:886 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl+0x81/0x150 fs/ioctl.c:893 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893 x64_sys_call+0x1581/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:17 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: 0x0000000000000007 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9005 Comm: syz.4.1641 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================