overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. ====================================================== WARNING: possible circular locking dependency detected 6.6.96-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.1412/11264 is trying to acquire lock: ffff888076e46d98 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff888076e46d98 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}, at: ocfs2_xattr_set+0xada/0x11f0 fs/ocfs2/xattr.c:3622 but task is already holding lock: ffff88805d5586f8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x410/0x11f0 fs/ocfs2/xattr.c:3583 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x2fa/0x720 fs/ocfs2/acl.c:366 ocfs2_mknod+0x12e5/0x20f0 fs/ocfs2/namei.c:410 ocfs2_create+0x196/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3488 [inline] open_last_lookups fs/namei.c:3556 [inline] path_openat+0x1277/0x3190 fs/namei.c:3786 do_filp_open+0x1c5/0x3d0 fs/namei.c:3816 do_sys_openat2+0x12c/0x1c0 fs/open.c:1419 do_sys_open fs/open.c:1434 [inline] __do_sys_openat fs/open.c:1450 [inline] __se_sys_openat fs/open.c:1445 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1445 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1e9d/0x20c0 fs/jbd2/transaction.c:448 jbd2__journal_start+0x2bb/0x5b0 fs/jbd2/transaction.c:505 jbd2_journal_start+0x2a/0x40 fs/jbd2/transaction.c:544 ocfs2_start_trans+0x376/0x6c0 fs/ocfs2/journal.c:374 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline] ocfs2_reserve_local_alloc_bits+0xaef/0x24b0 fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x1bf/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2856 [inline] ocfs2_extend_dir+0x702/0x4760 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x2fc7/0x5480 fs/ocfs2/dir.c:4322 ocfs2_symlink+0xb38/0x2550 fs/ocfs2/namei.c:1863 vfs_symlink+0x138/0x2b0 fs/namei.c:4473 do_symlinkat+0x1b2/0x3f0 fs/namei.c:4499 __do_sys_symlink fs/namei.c:4520 [inline] __se_sys_symlink fs/namei.c:4518 [inline] __x64_sys_symlink+0x7e/0x90 fs/namei.c:4518 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x36a/0x6c0 fs/ocfs2/journal.c:372 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1258 [inline] ocfs2_reserve_local_alloc_bits+0xaef/0x24b0 fs/ocfs2/localalloc.c:668 ocfs2_reserve_clusters_with_limit+0x1bf/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_expand_inline_dir fs/ocfs2/dir.c:2856 [inline] ocfs2_extend_dir+0x702/0x4760 fs/ocfs2/dir.c:3201 ocfs2_prepare_dir_for_insert+0x2fc7/0x5480 fs/ocfs2/dir.c:4322 ocfs2_symlink+0xb38/0x2550 fs/ocfs2/namei.c:1863 vfs_symlink+0x138/0x2b0 fs/namei.c:4473 do_symlinkat+0x1b2/0x3f0 fs/namei.c:4499 __do_sys_symlink fs/namei.c:4520 [inline] __se_sys_symlink fs/namei.c:4518 [inline] __x64_sys_symlink+0x7e/0x90 fs/namei.c:4518 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (sb_internal#5){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x26b/0x6c0 fs/ocfs2/journal.c:370 ocfs2_remove_btree_range+0x7df/0x1480 fs/ocfs2/alloc.c:5753 ocfs2_commit_truncate+0xb4b/0x21a0 fs/ocfs2/alloc.c:7354 ocfs2_truncate_file+0xc86/0x13a0 fs/ocfs2/file.c:509 ocfs2_setattr+0x150d/0x1b20 fs/ocfs2/file.c:1211 notify_change+0xb0d/0xe10 fs/attr.c:499 do_truncate+0x19b/0x220 fs/open.c:66 vfs_truncate+0x266/0x300 fs/open.c:112 do_sys_truncate+0xe0/0x1a0 fs/open.c:135 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_xattr_set+0xada/0x11f0 fs/ocfs2/xattr.c:3622 __vfs_setxattr+0x431/0x470 fs/xattr.c:201 __vfs_setxattr_noperm+0x12d/0x5e0 fs/xattr.c:235 vfs_setxattr+0x16c/0x2f0 fs/xattr.c:322 ovl_do_setxattr fs/overlayfs/overlayfs.h:299 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:311 [inline] ovl_make_workdir fs/overlayfs/super.c:762 [inline] ovl_get_workdir+0xba1/0x1740 fs/overlayfs/super.c:874 ovl_fill_super+0x1345/0x3560 fs/overlayfs/super.c:1427 vfs_get_super fs/super.c:1346 [inline] get_tree_nodev+0xb5/0x140 fs/super.c:1365 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3366 do_mount fs/namespace.c:3706 [inline] __do_sys_mount fs/namespace.c:3915 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3892 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6 --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#6); *** DEADLOCK *** 4 locks held by syz.0.1412/11264: #0: ffff888065aba0e0 (&type->s_umount_key#61/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x920 fs/super.c:352 #1: ffff8880310c0418 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:403 #2: ffff88805d5589d8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805d5589d8 (&sb->s_type->i_mutex_key#25){++++}-{3:3}, at: vfs_setxattr+0x145/0x2f0 fs/xattr.c:321 #3: ffff88805d5586f8 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x410/0x11f0 fs/ocfs2/xattr.c:3583 stack backtrace: CPU: 1 PID: 11264 Comm: syz.0.1412 Not tainted 6.6.96-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137 lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754 down_write+0x97/0x1f0 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_xattr_set+0xada/0x11f0 fs/ocfs2/xattr.c:3622 __vfs_setxattr+0x431/0x470 fs/xattr.c:201 __vfs_setxattr_noperm+0x12d/0x5e0 fs/xattr.c:235 vfs_setxattr+0x16c/0x2f0 fs/xattr.c:322 ovl_do_setxattr fs/overlayfs/overlayfs.h:299 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:311 [inline] ovl_make_workdir fs/overlayfs/super.c:762 [inline] ovl_get_workdir+0xba1/0x1740 fs/overlayfs/super.c:874 ovl_fill_super+0x1345/0x3560 fs/overlayfs/super.c:1427 vfs_get_super fs/super.c:1346 [inline] get_tree_nodev+0xb5/0x140 fs/super.c:1365 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3366 do_mount fs/namespace.c:3706 [inline] __do_sys_mount fs/namespace.c:3915 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3892 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9caf38e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9cb019d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9caf5b5fa0 RCX: 00007f9caf38e929 RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007f9caf410b39 R08: 0000200000000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9caf5b5fa0 R15: 00007fffd4f711b8 OCFS2: ERROR (device loop0): int ocfs2_validate_gd_parent(struct super_block *, struct ocfs2_dinode *, struct buffer_head *, int): Group descriptor #32 has bit count of 1024 On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.0.1412,11264,1):ocfs2_search_chain:1761 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_search_chain:1871 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_claim_suballoc_bits:1940 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_claim_suballoc_bits:1983 ERROR: status = -30 (syz.0.1412,11264,1):__ocfs2_claim_clusters:2355 ERROR: status = -30 (syz.0.1412,11264,1):__ocfs2_claim_clusters:2363 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_block_group_alloc_contig:433 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_block_group_alloc:705 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_block_group_alloc:758 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_reserve_suballoc_bits:833 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_reserve_suballoc_bits:850 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_reserve_new_metadata_blocks:990 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_reserve_new_metadata_blocks:1013 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_init_xattr_set_ctxt:3280 ERROR: status = -30 (syz.0.1412,11264,1):ocfs2_xattr_set:3637 ERROR: status = -30 overlayfs: failed to set xattr on upper overlayfs: ...falling back to redirect_dir=nofollow. overlayfs: ...falling back to index=off. overlayfs: ...falling back to uuid=null. overlayfs: upper fs missing required features. ocfs2: Unmounting device (7,0) on (node local)