================================================================== BUG: KCSAN: data-race in pid_update_inode / pid_update_inode read to 0xffff8881254f0ac8 of 2 bytes by task 7829 on cpu 0: pid_update_inode+0x25/0x70 fs/proc/base.c:1818 pid_revalidate+0x91/0xd0 fs/proc/base.c:1841 d_revalidate fs/namei.c:758 [inline] d_revalidate fs/namei.c:755 [inline] lookup_fast+0x6f2/0x700 fs/namei.c:1607 walk_component+0x6d/0xe70 fs/namei.c:1796 lookup_last fs/namei.c:2263 [inline] path_lookupat.isra.0+0x13a/0x5a0 fs/namei.c:2308 filename_lookup+0x145/0x2b0 fs/namei.c:2338 user_path_at_empty+0x4c/0x70 fs/namei.c:2598 user_path_at include/linux/namei.h:49 [inline] vfs_statx+0xd9/0x190 fs/stat.c:187 vfs_stat include/linux/fs.h:3242 [inline] __do_sys_newstat+0x51/0xb0 fs/stat.c:341 __se_sys_newstat fs/stat.c:337 [inline] __x64_sys_newstat+0x3a/0x50 fs/stat.c:337 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8881254f0ac8 of 2 bytes by task 7834 on cpu 1: pid_update_inode+0x51/0x70 fs/proc/base.c:1820 pid_revalidate+0x91/0xd0 fs/proc/base.c:1841 d_revalidate fs/namei.c:758 [inline] d_revalidate fs/namei.c:755 [inline] lookup_fast+0x6f2/0x700 fs/namei.c:1607 walk_component+0x6d/0xe70 fs/namei.c:1796 link_path_walk.part.0+0x5d3/0xa90 fs/namei.c:2131 link_path_walk fs/namei.c:2062 [inline] path_openat+0x14f/0x36e0 fs/namei.c:3524 do_filp_open+0x11e/0x1b0 fs/namei.c:3555 do_sys_open+0x3b3/0x4f0 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x55/0x70 fs/open.c:1110 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7834 Comm: ps Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================