================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match read to 0xffff888128ced200 of 8 bytes by task 14786 on cpu 0: other_inode_match+0x6b/0x5c0 fs/ext4/inode.c:4820 find_inode_nowait+0x135/0x160 fs/inode.c:1437 ext4_update_other_inodes_time fs/ext4/inode.c:4868 [inline] ext4_do_update_inode fs/ext4/inode.c:4994 [inline] ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5547 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:5740 ext4_ext_tree_init+0x92/0xb0 fs/ext4/extents.c:872 __ext4_new_inode+0x2d94/0x2f10 fs/ext4/ialloc.c:1164 ext4_symlink+0x31c/0x9b0 fs/ext4/namei.c:3275 vfs_symlink fs/namei.c:4131 [inline] vfs_symlink+0x218/0x310 fs/namei.c:4117 do_symlinkat+0x1a5/0x1e0 fs/namei.c:4158 __do_sys_symlink fs/namei.c:4177 [inline] __se_sys_symlink fs/namei.c:4175 [inline] __x64_sys_symlink+0x3f/0x50 fs/namei.c:4175 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff888128ced200 of 8 bytes by task 14770 on cpu 1: __mark_inode_dirty+0x1ce/0x940 fs/fs-writeback.c:2289 mark_inode_dirty include/linux/fs.h:2172 [inline] generic_write_end+0x1b7/0x1f0 fs/buffer.c:2199 ext4_da_write_end+0x158/0x620 fs/ext4/inode.c:3091 generic_perform_write+0x1d3/0x320 mm/filemap.c:3320 ext4_buffered_write_iter+0x143/0x290 fs/ext4/file.c:252 ext4_file_write_iter+0xf4/0xd40 fs/ext4/file.c:547 call_write_iter include/linux/fs.h:1902 [inline] do_iter_readv_writev+0x487/0x5b0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x13b/0x3c0 fs/read_write.c:951 vfs_iter_write+0x5c/0x80 fs/read_write.c:983 iter_file_splice_write+0x530/0x840 fs/splice.c:760 do_splice_from fs/splice.c:863 [inline] direct_splice_actor+0xa0/0xc0 fs/splice.c:1037 splice_direct_to_actor+0x22b/0x540 fs/splice.c:992 do_splice_direct+0x161/0x1e0 fs/splice.c:1080 do_sendfile+0x384/0x7f0 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0xbe/0x140 fs/read_write.c:1511 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14770 Comm: syz-executor.3 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================