linux-bredos/drivers/misc at 96ae4c19ed71d7cda8aadb522f3d2dd04ac37cd6 - linux-bredos - My program ub

drholy/linux-bredos

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Josh Poimboeuf db437e9854 objtool, lkdtm: Obfuscate the do_nothing() pointer

[ Upstream commit 05026ea01e ]

If execute_location()'s memcpy of do_nothing() gets inlined and unrolled
by the compiler, it copies one word at a time:

    mov    0x0(%rip),%rax    R_X86_64_PC32    .text+0x1374
    mov    %rax,0x38(%rbx)
    mov    0x0(%rip),%rax    R_X86_64_PC32    .text+0x136c
    mov    %rax,0x30(%rbx)
    ...

Those .text references point to the middle of the function, causing
objtool to complain about their lack of ENDBR.

Prevent that by resolving the function pointer at runtime rather than
build time.  This fixes the following warning:

  drivers/misc/lkdtm/lkdtm.o: warning: objtool: execute_location+0x23: relocation to !ENDBR: .text+0x1378

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/30b9abffbddeb43c4f6320b1270fa9b4d74c54ed.1742852847.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/oe-kbuild-all/202503191453.uFfxQy5R-lkp@intel.com/
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-05-02 07:50:56 +02:00

..

misc: add HAS_IOPORT dependencies

2023-05-29 15:05:00 +01:00

Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2023-09-01 09:53:54 -07:00

driver core: class: remove module * from class_create()

2023-03-17 15:16:33 +01:00

Revert "drivers/card_reader/rtsx_usb: Restore interrupt based detection"

2025-03-13 12:58:33 +01:00

…

Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2023-09-01 09:53:54 -07:00

…

eeprom: digsy_mtc: Make GPIO lookup table match the device

2025-03-13 12:58:37 +01:00

misc: genwqe: make class_genwqe a static const structure

2023-08-11 21:41:33 +02:00

ibm: convert to ctime accessor functions

2023-07-13 10:28:02 +02:00

misc: lis3lv02d_i2c: Fix regulators getting en-/dis-abled twice on suspend/resume

2024-04-03 15:28:43 +02:00

objtool, lkdtm: Obfuscate the do_nothing() pointer

2025-05-02 07:50:56 +02:00

misc: microchip: pci1xxxx: Fix incorrect IRQ status handling during ack

2025-05-02 07:50:49 +02:00

mei: me: add panther lake H DID

2025-05-02 07:50:48 +02:00

mmu_notifiers: rename invalidate_range notifier

2023-08-18 10:12:41 -07:00

misc/pvpanic-pci: register attributes via pci_driver

2024-06-12 11:12:35 +02:00

misc: sgi-gru: Don't disable preemption in GRU driver

2024-11-08 16:28:21 +01:00

sgi-xp: simplify sysctl registration

2023-03-09 17:32:13 +01:00

misc: st_core: Do not call kfree_skb() under spin_lock_irqsave()

2023-11-20 11:59:26 +01:00

uacce: vma_close clears q->qfrs when freeing qfrs

2023-05-31 19:00:26 +01:00

VMCI: Fix use-after-free when removing resource in vmci_resource_remove()

2024-09-12 11:11:41 +02:00

ad525x_dpot-i2c.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

ad525x_dpot-spi.c

…

ad525x_dpot.c

…

ad525x_dpot.h

…

apds990x.c

misc: apds990x: Fix missing pm_runtime_disable()

2024-12-09 10:32:37 +01:00

apds9802als.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

atmel-ssc.c

misc: atmel-ssc: Use devm_platform_get_and_ioremap_resource()

2023-08-04 15:38:45 +02:00

bh1770glc.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

cs5535-mfgpt.c

…

ds1682.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

dummy-irq.c

…

dw-xdata-pcie.c

…

enclosure.c

drivers: remove struct module * setting from struct class

2023-03-17 15:16:27 +01:00

fastrpc.c

misc: fastrpc: Fix copy buffer page size

2025-02-17 09:40:39 +01:00

gehc-achc.c

…

hi6421v600-irq.c

misc: hi6421-spmi-pmic: Remove redundant dev_err()

2023-08-04 15:39:10 +02:00

hisi_hikey_usb.c

…

hmc6352.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

hpilo.c

misc: hpilo: make ilo_class a static const structure

2023-08-11 21:41:36 +02:00

hpilo.h

…

ibmvmc.c

ibm: convert to ctime accessor functions

2023-07-13 10:28:02 +02:00

ibmvmc.h

…

ics932s401.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

isl29003.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

isl29020.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

Kconfig

misc: open-dice: make OPEN_DICE depend on HAS_IOMEM

2023-08-04 15:39:42 +02:00

kgdbts.c

…

lattice-ecp3-config.c

…

Makefile

misc: tps6594-pfsm: Add driver for TI TPS6594 PFSM

2023-06-15 13:41:53 +02:00

open-dice.c

misc: open-dice: Fix spurious lockdep warning

2024-03-01 13:34:51 +01:00

pch_phub.c

…

pci_endpoint_test.c

misc: pci_endpoint_test: Fix 'irq_type' to convey the correct type

2025-04-25 10:45:55 +02:00

phantom.c

driver core: class: remove module * from class_create()

2023-03-17 15:16:33 +01:00

qcom-coincell.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00

smpro-errmon.c

misc: smpro-errmon: Remove the unneeded include <linux/i2c.h>

2023-05-31 19:00:10 +01:00

smpro-misc.c

misc: smpro-misc: Add Ampere's Altra SMpro misc driver

2022-11-10 19:03:03 +01:00

sram-exec.c

mm: Introduce set_memory_rox()

2022-12-15 10:37:26 -08:00

sram.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00

sram.h

misc: sram: Improve and simplify clk handling

2023-03-09 17:31:53 +01:00

tifm_7xx1.c

misc: tifm: fix possible memory leak in tifm_7xx1_switch_media()

2022-11-23 19:55:26 +01:00

tifm_core.c

driver core: make struct bus_type.uevent() take a const *

2023-01-27 13:45:52 +01:00

tps6594-esm.c

Merge 6.5-rc6 into char-misc-next

2023-08-13 22:14:51 +02:00

tps6594-pfsm.c

misc: tps6594: Remove redundant dev_err_probe() for platform_get_irq_byname()

2023-08-12 12:58:40 +02:00

tsl2550.c

misc: Switch i2c drivers back to use .probe()

2023-05-29 15:04:52 +01:00

vcpu_stall_detector.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00

vmw_balloon.c

misc: vmw_balloon: fix memory leak with using debugfs_lookup()

2023-02-08 13:24:22 +01:00

xilinx_sdfec.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00

xilinx_tmr_inject.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00

xilinx_tmr_manager.c

misc: Explicitly include correct DT includes

2023-08-04 15:39:04 +02:00