diff --git a/tools/btrfsslower.py b/tools/btrfsslower.py
index 0478fe119df6..fcc155e87067 100755
--- a/tools/btrfsslower.py
+++ b/tools/btrfsslower.py
@@ -211,19 +211,24 @@
     if (FILTER_US)
         return 0;
 
-    // workaround (rewriter should handle file to d_iname in one step):
-    struct dentry *de = NULL;
-    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
-
     // populate output struct
     u32 size = PT_REGS_RC(ctx);
     struct data_t data = {.type = type, .size = size, .delta_us = delta_us,
         .pid = pid};
     data.ts_us = ts / 1000;
     data.offset = valp->offset;
-    bpf_probe_read(&data.file, sizeof(data.file), de->d_iname);
     bpf_get_current_comm(&data.task, sizeof(data.task));
 
+    // workaround (rewriter should handle file to d_name in one step):
+    struct dentry *de = NULL;
+    struct qstr qs = {};
+    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
+    bpf_probe_read(&qs, sizeof(qs), (void *)&de->d_name);
+    if (qs.len == 0)
+        return 0;
+    bpf_probe_read(&data.file, sizeof(data.file), (void *)qs.name);
+
+    // output
     events.perf_submit(ctx, &data, sizeof(data));
 
     return 0;
diff --git a/tools/ext4slower.py b/tools/ext4slower.py
index ceb2a8f77fd9..20865a584359 100755
--- a/tools/ext4slower.py
+++ b/tools/ext4slower.py
@@ -206,19 +206,24 @@
     if (FILTER_US)
         return 0;
 
-    // workaround (rewriter should handle file to d_iname in one step):
-    struct dentry *de = NULL;
-    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
-
     // populate output struct
     u32 size = PT_REGS_RC(ctx);
     struct data_t data = {.type = type, .size = size, .delta_us = delta_us,
         .pid = pid};
     data.ts_us = ts / 1000;
     data.offset = valp->offset;
-    bpf_probe_read(&data.file, sizeof(data.file), de->d_iname);
     bpf_get_current_comm(&data.task, sizeof(data.task));
 
+    // workaround (rewriter should handle file to d_name in one step):
+    struct dentry *de = NULL;
+    struct qstr qs = {};
+    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
+    bpf_probe_read(&qs, sizeof(qs), (void *)&de->d_name);
+    if (qs.len == 0)
+        return 0;
+    bpf_probe_read(&data.file, sizeof(data.file), (void *)qs.name);
+
+    // output
     events.perf_submit(ctx, &data, sizeof(data));
 
     return 0;
diff --git a/tools/xfsslower.py b/tools/xfsslower.py
index 80d98781dc1d..25c5a207c788 100755
--- a/tools/xfsslower.py
+++ b/tools/xfsslower.py
@@ -176,19 +176,24 @@
     if (FILTER_US)
         return 0;
 
-    // workaround (rewriter should handle file to d_iname in one step):
-    struct dentry *de = NULL;
-    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
-
     // populate output struct
     u32 size = PT_REGS_RC(ctx);
     struct data_t data = {.type = type, .size = size, .delta_us = delta_us,
         .pid = pid};
     data.ts_us = ts / 1000;
     data.offset = valp->offset;
-    bpf_probe_read(&data.file, sizeof(data.file), de->d_iname);
     bpf_get_current_comm(&data.task, sizeof(data.task));
 
+    // workaround (rewriter should handle file to d_name in one step):
+    struct dentry *de = NULL;
+    struct qstr qs = {};
+    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
+    bpf_probe_read(&qs, sizeof(qs), (void *)&de->d_name);
+    if (qs.len == 0)
+        return 0;
+    bpf_probe_read(&data.file, sizeof(data.file), (void *)qs.name);
+
+    // output
     events.perf_submit(ctx, &data, sizeof(data));
 
     return 0;
diff --git a/tools/zfsslower.py b/tools/zfsslower.py
index 8456f21db87c..e2be68410583 100755
--- a/tools/zfsslower.py
+++ b/tools/zfsslower.py
@@ -180,19 +180,24 @@
     if (FILTER_US)
         return 0;
 
-    // workaround (rewriter should handle file to d_iname in one step):
-    struct dentry *de = NULL;
-    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
-
     // populate output struct
     u32 size = PT_REGS_RC(ctx);
     struct data_t data = {.type = type, .size = size, .delta_us = delta_us,
         .pid = pid};
     data.ts_us = ts / 1000;
     data.offset = valp->offset;
-    bpf_probe_read(&data.file, sizeof(data.file), de->d_iname);
     bpf_get_current_comm(&data.task, sizeof(data.task));
 
+    // workaround (rewriter should handle file to d_name in one step):
+    struct dentry *de = NULL;
+    struct qstr qs = {};
+    bpf_probe_read(&de, sizeof(de), &valp->fp->f_path.dentry);
+    bpf_probe_read(&qs, sizeof(qs), (void *)&de->d_name);
+    if (qs.len == 0)
+        return 0;
+    bpf_probe_read(&data.file, sizeof(data.file), (void *)qs.name);
+
+    // output
     events.perf_submit(ctx, &data, sizeof(data));
 
     return 0;