From 4617721c502b2ddaa4e324e86da4997edf738fa5 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 2 Sep 2026 09:55:01 -0400 Subject: ftrace: Synchronize the initialization of ftrace_ops There's some internal state that ftrace_ops needs to have set, but since it can be declared outside of the ftrace.c code, it calls ftrace_ops_init() on the ops in every global function. The issue is that if two tasks call it on the same ops at the same time it is possible to have the initialization of one corrupt the initialization of the other call. Create a ops_mutex to use to synchronize every initialization of the ftrace_ops. The mutex is taken within checking the ftrace_ops flag that states it was initializied but the flag is checked again after the mutex has been taken. Checking first outside the mutex allows it to shortcut having to take the mutex. But then the check needs to be done again after the mute is taken in case of races. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260902095501.6b59af20@gandalf.local.home Fixes: f04f24fb7e48d ("ftrace, kprobes: Fix a deadlock on ftrace_regex_lock") Reported-by: sashiko-bot@kernel.org Close: https://lore.kernel.org/all/20260829025528.49A831F000E9@smtp.kernel.org/ Signed-off-by: Steven Rostedt --- drivers/Makefile | 200 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 200 insertions(+) create mode 100644 drivers/Makefile (limited to 'drivers/Makefile') diff --git a/drivers/Makefile b/drivers/Makefile new file mode 100644 index 000000000..0841ea851 --- /dev/null +++ b/drivers/Makefile @@ -0,0 +1,200 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux kernel device drivers. +# +# 15 Sep 2000, Christoph Hellwig +# Rewritten to use lists instead of if-statements. +# + +obj-y += cache/ +obj-y += irqchip/ +obj-y += bus/ + +obj-y += phy/ + +# GPIO must come after pinctrl as gpios may need to mux pins etc +obj-$(CONFIG_PINCTRL) += pinctrl/ +obj-$(CONFIG_GPIOLIB) += gpio/ +obj-y += pwm/ + +# LEDs must come before PCI, it is needed by NPEM driver +obj-y += leds/ + +obj-y += pci/ + +obj-$(CONFIG_PARISC) += parisc/ +obj-$(CONFIG_RAPIDIO) += rapidio/ +obj-y += video/ +obj-y += idle/ + +# IPMI must come before ACPI in order to provide IPMI opregion support +obj-y += char/ipmi/ + +obj-$(CONFIG_ACPI) += acpi/ + +# PnP must come after ACPI since it will eventually need to check if acpi +# was used and do nothing if so +obj-$(CONFIG_PNP) += pnp/ +obj-y += amba/ + +obj-y += clk/ +# Many drivers will want to use DMA so this has to be made available +# really early. +obj-$(CONFIG_DMADEVICES) += dma/ + +# SOC specific infrastructure drivers. +obj-y += soc/ +obj-$(CONFIG_PM_GENERIC_DOMAINS) += pmdomain/ + +obj-y += virtio/ +obj-$(CONFIG_VDPA) += vdpa/ +obj-$(CONFIG_XEN) += xen/ + +# regulators early, since some subsystems rely on them to initialize +obj-$(CONFIG_REGULATOR) += regulator/ + +# reset controllers early, since gpu drivers might rely on them to initialize +obj-$(CONFIG_RESET_CONTROLLER) += reset/ + +# tty/ comes before char/ so that the VT console is the boot-time +# default. +obj-y += tty/ +obj-y += char/ + +# iommu/ comes before gpu as gpu are using iommu controllers +obj-y += iommu/ + +# gpu/ comes after char for AGP vs DRM startup and after iommu +obj-y += gpu/ + +obj-$(CONFIG_CONNECTOR) += connector/ + +# i810fb depends on char/agp/ +obj-$(CONFIG_FB_I810) += video/fbdev/i810/ + +obj-$(CONFIG_PARPORT) += parport/ +obj-y += base/ block/ misc/ mfd/ nfc/ +obj-$(CONFIG_LIBNVDIMM) += nvdimm/ +obj-y += dax/ +obj-$(CONFIG_DMA_SHARED_BUFFER) += dma-buf/ +obj-$(CONFIG_NUBUS) += nubus/ +obj-y += cxl/ +obj-y += macintosh/ +obj-y += scsi/ +obj-y += nvme/ +obj-$(CONFIG_ATA) += ata/ +obj-$(CONFIG_TARGET_CORE) += target/ +obj-$(CONFIG_MTD) += mtd/ +obj-$(CONFIG_SPI) += spi/ +obj-$(CONFIG_SPMI) += spmi/ +obj-$(CONFIG_HSI) += hsi/ +obj-$(CONFIG_SLIMBUS) += slimbus/ +obj-y += net/ +obj-$(CONFIG_ATM) += atm/ +obj-$(CONFIG_FUSION) += message/ +obj-y += firewire/ +obj-$(CONFIG_UIO) += uio/ +obj-$(CONFIG_VFIO) += vfio/ +obj-y += cdrom/ +obj-y += auxdisplay/ +obj-$(CONFIG_PCCARD) += pcmcia/ +obj-$(CONFIG_DIO) += dio/ +obj-$(CONFIG_SBUS) += sbus/ +obj-$(CONFIG_ZORRO) += zorro/ +obj-$(CONFIG_ATA_OVER_ETH) += block/aoe/ +obj-$(CONFIG_TC) += tc/ +obj-$(CONFIG_USB_PHY) += usb/ +obj-$(CONFIG_USB) += usb/ +obj-$(CONFIG_USB_SUPPORT) += usb/ +obj-$(CONFIG_PCI) += usb/ +obj-$(CONFIG_USB_GADGET) += usb/ +obj-$(CONFIG_OF) += usb/ +obj-$(CONFIG_SERIO) += input/serio/ +obj-$(CONFIG_GAMEPORT) += input/gameport/ +obj-$(CONFIG_INPUT) += input/ +obj-$(CONFIG_RTC_LIB) += rtc/ +obj-y += i2c/ i3c/ media/ +obj-$(CONFIG_PPS) += pps/ +obj-y += ptp/ +obj-$(CONFIG_W1) += w1/ +obj-y += power/ +obj-$(CONFIG_HWMON) += hwmon/ +obj-$(CONFIG_THERMAL) += thermal/ +obj-$(CONFIG_WATCHDOG) += watchdog/ +obj-$(CONFIG_MD) += md/ +obj-$(CONFIG_BT) += bluetooth/ +obj-$(CONFIG_ACCESSIBILITY) += accessibility/ +obj-$(CONFIG_EDAC) += edac/ +obj-$(CONFIG_EISA) += eisa/ +obj-$(CONFIG_PM_OPP) += opp/ +obj-$(CONFIG_CPU_FREQ) += cpufreq/ +obj-$(CONFIG_CPU_IDLE) += cpuidle/ +obj-y += mmc/ +obj-y += ufs/ +obj-$(CONFIG_MEMSTICK) += memstick/ +obj-$(CONFIG_INFINIBAND) += infiniband/ +obj-y += firmware/ +obj-$(CONFIG_FWCTL) += fwctl/ +obj-$(CONFIG_CRYPTO) += crypto/ +obj-$(CONFIG_SUPERH) += sh/ +obj-y += clocksource/ +obj-$(CONFIG_DCA) += dca/ +obj-$(CONFIG_HID_SUPPORT) += hid/ +obj-$(CONFIG_PPC_PS3) += ps3/ +obj-$(CONFIG_OF) += of/ +obj-$(CONFIG_SSB) += ssb/ +obj-$(CONFIG_BCMA) += bcma/ +obj-$(CONFIG_VHOST_RING) += vhost/ +obj-$(CONFIG_VHOST_IOTLB) += vhost/ +obj-$(CONFIG_VHOST) += vhost/ +obj-$(CONFIG_GREYBUS) += greybus/ +obj-$(CONFIG_COMEDI) += comedi/ +obj-$(CONFIG_GPIB) += gpib/ +obj-$(CONFIG_STAGING) += staging/ +obj-y += platform/ + +obj-$(CONFIG_MAILBOX) += mailbox/ +obj-$(CONFIG_HWSPINLOCK) += hwspinlock/ +obj-$(CONFIG_REMOTEPROC) += remoteproc/ +obj-$(CONFIG_RPMSG) += rpmsg/ +obj-$(CONFIG_SOUNDWIRE) += soundwire/ + +# Virtualization drivers +obj-y += virt/ +obj-$(CONFIG_HYPERV) += hv/ + +obj-$(CONFIG_PM_DEVFREQ) += devfreq/ +obj-$(CONFIG_EXTCON) += extcon/ +obj-$(CONFIG_MEMORY) += memory/ +obj-$(CONFIG_IIO) += iio/ +obj-$(CONFIG_IPACK_BUS) += ipack/ +obj-$(CONFIG_NTB) += ntb/ +obj-$(CONFIG_POWERCAP) += powercap/ +obj-$(CONFIG_MCB) += mcb/ +obj-$(CONFIG_PERF_EVENTS) += perf/ +obj-$(CONFIG_RAS) += ras/ +obj-$(CONFIG_USB4) += thunderbolt/ +obj-$(CONFIG_CORESIGHT) += hwtracing/coresight/ +obj-y += hwtracing/intel_th/ +obj-$(CONFIG_STM) += hwtracing/stm/ +obj-$(CONFIG_HISI_PTT) += hwtracing/ptt/ +obj-y += android/ +obj-$(CONFIG_NVMEM) += nvmem/ +obj-$(CONFIG_FPGA) += fpga/ +obj-$(CONFIG_FSI) += fsi/ +obj-$(CONFIG_TEE) += tee/ +obj-$(CONFIG_MULTIPLEXER) += mux/ +obj-$(CONFIG_SIOX) += siox/ +obj-$(CONFIG_GNSS) += gnss/ +obj-$(CONFIG_INTERCONNECT) += interconnect/ +obj-$(CONFIG_COUNTER) += counter/ +obj-$(CONFIG_MOST) += most/ +obj-$(CONFIG_PECI) += peci/ +obj-$(CONFIG_HTE) += hte/ +obj-$(CONFIG_DRM_ACCEL) += accel/ +obj-$(CONFIG_CDX_BUS) += cdx/ +obj-$(CONFIG_DPLL) += dpll/ +obj-y += resctrl/ + +obj-$(CONFIG_DIBS) += dibs/ +obj-$(CONFIG_S390) += s390/ -- cgit v1.3.1