================================================================== BUG: KCSAN: data-race in __ext4_update_other_inode_time / ext4_unlink write to 0xffff8881203d22a8 of 8 bytes by task 9190 on cpu 1: ext4_unlink+0x792/0x9e0 fs/ext4/namei.c:3240 vfs_unlink+0x22f/0x3d0 fs/namei.c:3825 do_unlinkat+0x28a/0x4d0 fs/namei.c:3889 __do_sys_unlink fs/namei.c:3936 [inline] __se_sys_unlink fs/namei.c:3934 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:3934 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8881203d22a8 of 8 bytes by task 2681 on cpu 0: ext4_encode_extra_time fs/ext4/ext4.h:866 [inline] __ext4_update_other_inode_time+0x14f/0x570 fs/ext4/inode.c:4908 ext4_update_other_inodes_time fs/ext4/inode.c:4940 [inline] ext4_do_update_inode fs/ext4/inode.c:5068 [inline] ext4_mark_iloc_dirty+0x1266/0x1630 fs/ext4/inode.c:5624 __ext4_mark_inode_dirty+0x2b9/0x3f0 fs/ext4/inode.c:5818 add_dirent_to_buf+0x465/0x5e0 fs/ext4/namei.c:2031 ext4_add_entry+0x13d7/0x21d0 fs/ext4/namei.c:2243 ext4_add_nondir+0x50/0x1a0 fs/ext4/namei.c:2579 ext4_symlink+0x5c0/0x7e0 fs/ext4/namei.c:3372 vfs_symlink+0x218/0x2f0 fs/namei.c:3953 do_symlinkat+0xee/0x280 fs/namei.c:3980 __do_sys_symlink fs/namei.c:3999 [inline] __se_sys_symlink fs/namei.c:3997 [inline] __x64_sys_symlink+0x32/0x40 fs/namei.c:3997 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2681 Comm: syz-executor.0 Not tainted 5.8.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================