================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match write to 0xffff8880b7409340 of 8 bytes by task 23 on cpu 0: other_inode_match fs/ext4/inode.c:5165 [inline] other_inode_match+0x13c/0x5c0 fs/ext4/inode.c:5149 find_inode_nowait+0x135/0x160 fs/inode.c:1437 ext4_update_other_inodes_time fs/ext4/inode.c:5204 [inline] ext4_do_update_inode fs/ext4/inode.c:5330 [inline] ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5876 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:6055 ext4_dirty_inode+0x86/0xb0 fs/ext4/inode.c:6086 __mark_inode_dirty+0x5d4/0x940 fs/fs-writeback.c:2258 mark_inode_dirty_sync include/linux/fs.h:2170 [inline] __writeback_single_inode+0x57f/0x8e0 fs/fs-writeback.c:1508 writeback_sb_inodes+0x4ba/0xa50 fs/fs-writeback.c:1716 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:2269 worker_thread+0xa0/0x800 kernel/workqueue.c:2415 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff8880b7409340 of 8 bytes by task 7644 on cpu 1: __mark_inode_dirty+0x4e4/0x940 fs/fs-writeback.c:2329 generic_update_time+0x184/0x270 fs/inode.c:1667 update_time fs/inode.c:1683 [inline] file_update_time+0x237/0x300 fs/inode.c:1898 ext4_page_mkwrite+0xf9/0xce0 fs/ext4/inode.c:6204 do_page_mkwrite+0x100/0x210 mm/memory.c:2208 wp_page_shared mm/memory.c:2507 [inline] do_wp_page+0xd65/0x11f0 mm/memory.c:2619 handle_pte_fault mm/memory.c:3865 [inline] __handle_mm_fault+0x1ab1/0x2c70 mm/memory.c:3973 handle_mm_fault+0x21b/0x530 mm/memory.c:4010 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:1202 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7644 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================