================================================================== BUG: KCSAN: data-race in __ext4_update_other_inode_time / iput write to 0xffff88801491a678 of 8 bytes by task 31983 on cpu 0: __ext4_update_other_inode_time+0xc1/0x550 fs/ext4/inode.c:4975 ext4_update_other_inodes_time fs/ext4/inode.c:5011 [inline] ext4_do_update_inode fs/ext4/inode.c:5140 [inline] ext4_mark_iloc_dirty+0x1286/0x1650 fs/ext4/inode.c:5721 __ext4_mark_inode_dirty+0x4cd/0x5d0 fs/ext4/inode.c:5915 ext4_ext_tree_init+0x7e/0x90 fs/ext4/extents.c:828 __ext4_new_inode+0x2a90/0x3060 fs/ext4/ialloc.c:1326 ext4_symlink+0x2bc/0x780 fs/ext4/namei.c:3330 vfs_symlink+0x216/0x2d0 fs/namei.c:3962 do_symlinkat+0xee/0x280 fs/namei.c:3989 __do_sys_symlink fs/namei.c:4008 [inline] __se_sys_symlink fs/namei.c:4006 [inline] __x64_sys_symlink+0x32/0x40 fs/namei.c:4006 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88801491a678 of 8 bytes by task 8473 on cpu 1: iput+0x2e/0x510 fs/inode.c:1669 do_unlinkat+0x2c9/0x4d0 fs/namei.c:3905 __do_sys_unlink fs/namei.c:3945 [inline] __se_sys_unlink fs/namei.c:3943 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:3943 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: 8473 Comm: syz-executor.1 Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================