================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / writeback_sb_inodes read to 0xffff888128d54c80 of 8 bytes by task 10008 on cpu 1: __mark_inode_dirty+0xb8/0x940 fs/fs-writeback.c:2272 mark_buffer_dirty+0x29c/0x2c0 fs/buffer.c:1156 __block_commit_write.isra.0+0x11f/0x170 fs/buffer.c:2081 block_commit_write fs/buffer.c:2473 [inline] block_page_mkwrite+0x226/0x230 fs/buffer.c:2522 ext4_page_mkwrite+0x5ca/0xe50 fs/ext4/inode.c:5902 do_page_mkwrite+0x100/0x210 mm/memory.c:2276 wp_page_shared mm/memory.c:2603 [inline] do_wp_page+0xbf5/0xeb0 mm/memory.c:2715 handle_pte_fault mm/memory.c:3961 [inline] __handle_mm_fault+0x1d16/0x2e00 mm/memory.c:4075 handle_mm_fault+0x21b/0x530 mm/memory.c:4112 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x456/0x8d0 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x194 arch/x86/mm/fault.c:1530 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203 write to 0xffff888128d54c80 of 8 bytes by task 638 on cpu 0: writeback_sb_inodes+0x38d/0xa50 fs/fs-writeback.c:1705 wb_writeback+0x1f9/0x6a0 fs/fs-writeback.c:1892 wb_do_writeback fs/fs-writeback.c:2037 [inline] wb_workfn+0x22e/0x970 fs/fs-writeback.c:2078 process_one_work+0x3d4/0x890 kernel/workqueue.c:2264 worker_thread+0xa0/0x800 kernel/workqueue.c:2410 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 638 Comm: kworker/u4:6 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: writeback wb_workfn (flush-8:0) ==================================================================