Hello, syzbot found the following issue on: HEAD commit: 9c0c4d24ac00 Merge tag 'block-5.15-2021-10-22' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15418e52b00000 kernel config: https://syzkaller.appspot.com/x/.config?x=6339b6ea86d89fd7 dashboard link: https://syzkaller.appspot.com/bug?extid=900324b91168c395f1a2 compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+900324b91168c395f1a2@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KCSAN: data-race in ext4_mark_iloc_dirty / ext4_mark_iloc_dirty write to 0xffff888104bdf5c8 of 4 bytes by task 505 on cpu 0: ext4_update_inode_fsync_trans fs/ext4/ext4_jbd2.h:445 [inline] ext4_do_update_inode fs/ext4/inode.c:5114 [inline] ext4_mark_iloc_dirty+0x156a/0x1700 fs/ext4/inode.c:5683 ext4_orphan_del+0x593/0x730 fs/ext4/orphan.c:297 ext4_evict_inode+0xb1e/0xdb0 fs/ext4/inode.c:318 evict+0x1c8/0x3c0 fs/inode.c:588 iput_final fs/inode.c:1664 [inline] iput+0x430/0x580 fs/inode.c:1690 do_unlinkat+0x2d4/0x540 fs/namei.c:4176 __do_sys_unlink fs/namei.c:4217 [inline] __se_sys_unlink fs/namei.c:4215 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:4215 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae write to 0xffff888104bdf5c8 of 4 bytes by task 6959 on cpu 1: ext4_update_inode_fsync_trans fs/ext4/ext4_jbd2.h:445 [inline] ext4_do_update_inode fs/ext4/inode.c:5114 [inline] ext4_mark_iloc_dirty+0x156a/0x1700 fs/ext4/inode.c:5683 __ext4_mark_inode_dirty+0x4ec/0x5c0 fs/ext4/inode.c:5879 ext4_evict_inode+0x95e/0xdb0 fs/ext4/inode.c:280 evict+0x1c8/0x3c0 fs/inode.c:588 iput_final fs/inode.c:1664 [inline] iput+0x430/0x580 fs/inode.c:1690 dentry_unlink_inode+0x273/0x290 fs/dcache.c:376 d_delete+0x78/0xe0 fs/dcache.c:2505 vfs_rmdir+0x2e6/0x300 fs/namei.c:3984 do_rmdir+0x18d/0x330 fs/namei.c:4032 __do_sys_rmdir fs/namei.c:4051 [inline] __se_sys_rmdir fs/namei.c:4049 [inline] __x64_sys_rmdir+0x2c/0x30 fs/namei.c:4049 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000c326 -> 0x0000c327 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 6959 Comm: syz-executor.2 Tainted: G W 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
