================================================================== BUG: KCSAN: data-race in touch_atime / touch_atime write to 0xffff888107da0188 of 8 bytes by task 26277 on cpu 0: inode_set_atime_to_ts include/linux/fs.h:1541 [inline] inode_update_timestamps fs/inode.c:1876 [inline] generic_update_time fs/inode.c:1898 [inline] inode_update_time fs/inode.c:1918 [inline] touch_atime+0x1ed/0x340 fs/inode.c:1990 file_accessed include/linux/fs.h:2434 [inline] ext4_dio_read_iter fs/ext4/file.c:97 [inline] ext4_file_read_iter+0x271/0x2a0 fs/ext4/file.c:145 call_read_iter include/linux/fs.h:2079 [inline] copy_splice_read+0x39f/0x5d0 fs/splice.c:365 do_splice_read fs/splice.c:984 [inline] splice_direct_to_actor+0x288/0x660 fs/splice.c:1089 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x3b9/0x960 fs/read_write.c:1295 __do_sys_sendfile64 fs/read_write.c:1362 [inline] __se_sys_sendfile64 fs/read_write.c:1348 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888107da0188 of 8 bytes by task 26384 on cpu 1: inode_get_atime include/linux/fs.h:1535 [inline] inode_update_timestamps fs/inode.c:1873 [inline] generic_update_time fs/inode.c:1898 [inline] inode_update_time fs/inode.c:1918 [inline] touch_atime+0x19a/0x340 fs/inode.c:1990 file_accessed include/linux/fs.h:2434 [inline] ext4_dio_read_iter fs/ext4/file.c:97 [inline] ext4_file_read_iter+0x271/0x2a0 fs/ext4/file.c:145 call_read_iter include/linux/fs.h:2079 [inline] copy_splice_read+0x39f/0x5d0 fs/splice.c:365 do_splice_read fs/splice.c:984 [inline] splice_direct_to_actor+0x288/0x660 fs/splice.c:1089 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x3b9/0x960 fs/read_write.c:1295 __do_sys_sendfile64 fs/read_write.c:1362 [inline] __se_sys_sendfile64 fs/read_write.c:1348 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x000000000282fefd -> 0x00000000031b957d Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26384 Comm: syz-executor.2 Not tainted 6.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ==================================================================