From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc The current regex also matches symbols in modules, which makes the test fail on s390 where name_show is present only once in the kernel, but also multiple times in modules: 000001b1401cdc20 t name_show 000001b0c05e6c40 t name_show [mdev] 000001b0c0495f30 t name_show [i2c_core] Fix this by changing the regular expression to only match the function name. Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/ Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- drivers/char/tpm/tpmrm-dev.c | 54 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 drivers/char/tpm/tpmrm-dev.c (limited to 'drivers/char/tpm/tpmrm-dev.c') diff --git a/drivers/char/tpm/tpmrm-dev.c b/drivers/char/tpm/tpmrm-dev.c new file mode 100644 index 000000000..19e8f2779 --- /dev/null +++ b/drivers/char/tpm/tpmrm-dev.c @@ -0,0 +1,54 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2017 James.Bottomley@HansenPartnership.com + */ +#include +#include "tpm-dev.h" + +struct tpmrm_priv { + struct file_priv priv; + struct tpm_space space; +}; + +static int tpmrm_open(struct inode *inode, struct file *file) +{ + struct tpm_chip *chip; + struct tpmrm_priv *priv; + int rc; + + chip = container_of(inode->i_cdev, struct tpm_chip, cdevs); + priv = kzalloc_obj(*priv); + if (priv == NULL) + return -ENOMEM; + + rc = tpm2_init_space(&priv->space, TPM2_SPACE_BUFFER_SIZE); + if (rc) { + kfree(priv); + return -ENOMEM; + } + + tpm_common_open(file, chip, &priv->priv, &priv->space); + + return nonseekable_open(inode, file); +} + +static int tpmrm_release(struct inode *inode, struct file *file) +{ + struct file_priv *fpriv = file->private_data; + struct tpmrm_priv *priv = container_of(fpriv, struct tpmrm_priv, priv); + + tpm_common_release(file, fpriv); + tpm2_del_space(fpriv->chip, &priv->space); + kfree(priv); + + return 0; +} + +const struct file_operations tpmrm_fops = { + .owner = THIS_MODULE, + .open = tpmrm_open, + .read = tpm_common_read, + .write = tpm_common_write, + .poll = tpm_common_poll, + .release = tpmrm_release, +}; -- cgit v1.3.1