================================================================== BUG: KCSAN: data-race in atime_needs_update / propagate_one write to 0xffff888100d038f0 of 4 bytes by task 8387 on cpu 1: propagate_one+0x32d/0x400 fs/pnode.c:267 propagate_mnt+0x2f8/0x640 fs/pnode.c:319 attach_recursive_mnt+0x4fb/0x11c0 fs/namespace.c:2153 graft_tree fs/namespace.c:2261 [inline] do_add_mount fs/namespace.c:2812 [inline] do_new_mount_fc fs/namespace.c:2851 [inline] do_new_mount fs/namespace.c:2905 [inline] path_mount+0x1acf/0x1c00 fs/namespace.c:3233 do_mount fs/namespace.c:3246 [inline] __do_sys_mount fs/namespace.c:3454 [inline] __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3431 __x64_sys_mount+0x63/0x70 fs/namespace.c:3431 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888100d038f0 of 4 bytes by task 8361 on cpu 0: relatime_need_update fs/inode.c:1720 [inline] atime_needs_update+0x1e1/0x390 fs/inode.c:1817 touch_atime+0x55/0x2d0 fs/inode.c:1832 file_accessed include/linux/fs.h:2319 [inline] filemap_read+0x74f/0x7b0 mm/filemap.c:2530 generic_file_read_iter+0x82/0x410 mm/filemap.c:2609 ext4_file_read_iter+0x2e0/0x420 fs/ext4/file.c:74 __kernel_read+0x306/0x580 fs/read_write.c:454 integrity_kernel_read+0x4c/0x70 security/integrity/iint.c:191 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:484 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:515 [inline] ima_calc_file_hash+0x929/0x1310 security/integrity/ima/ima_crypto.c:572 ima_collect_measurement+0x168/0x310 security/integrity/ima/ima_api.c:252 process_measurement+0xa88/0x10f0 security/integrity/ima/ima_main.c:330 ima_file_check+0x75/0xa0 security/integrity/ima/ima_main.c:499 do_open fs/namei.c:3367 [inline] path_openat+0x19c5/0x21b0 fs/namei.c:3498 do_filp_open+0xbd/0x1d0 fs/namei.c:3525 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1214 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 8361 Comm: syz-fuzzer Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================