================================================================== BUG: KCSAN: data-race in fuse_set_nowrite / fuse_writepage_end read-write to 0xffff88810d592e38 of 4 bytes by task 15183 on cpu 0: fuse_writepage_end+0x43d/0x6f0 fs/fuse/file.c:1783 fuse_request_end+0x764/0x7a0 fs/fuse/dev.c:332 end_requests fs/fuse/dev.c:2067 [inline] fuse_abort_conn+0xac5/0xb20 fs/fuse/dev.c:2162 fuse_dev_release+0x2b6/0x300 fs/fuse/dev.c:2197 __fput+0x243/0x4d0 fs/file_table.c:281 ____fput+0x11/0x20 fs/file_table.c:314 task_work_run+0x8e/0x110 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x13c/0x170 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:266 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88810d592e38 of 4 bytes by task 15166 on cpu 1: fuse_set_nowrite+0x12d/0x180 fs/fuse/dir.c:1487 fuse_sync_writes fs/fuse/file.c:453 [inline] fuse_fsync+0xf4/0x2b0 fs/fuse/file.c:552 vfs_fsync_range+0x107/0x120 fs/sync.c:200 generic_write_sync include/linux/fs.h:2739 [inline] generic_file_write_iter+0x103/0x130 mm/filemap.c:3494 fuse_cache_write_iter fs/fuse/file.c:1271 [inline] fuse_file_write_iter+0x359/0x760 fs/fuse/file.c:1583 call_write_iter include/linux/fs.h:1903 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0x6d4/0x7c0 fs/read_write.c:605 ksys_write+0xce/0x180 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:667 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 15166 Comm: syz-executor.5 Not tainted 5.10.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================