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fa084c35afa13ab07a860ef0936cd987f9aa0460
linux/drivers/misc
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Catalin Marinas f4ea8e05f2 lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop 
Since commit eb972eab07 ("lkdtm/bugs: Add cases for BUG and PANIC
occurring in hardirq context"), building with clang for x86_64 results
in the following warnings:

vmlinux.o: warning: objtool: lkdtm_PANIC_IN_HARDIRQ(): unexpected end of section .text.lkdtm_PANIC_IN_HARDIRQ
vmlinux.o: warning: objtool: lkdtm_BUG_IN_HARDIRQ(): unexpected end of section .text.lkdtm_BUG_IN_HARDIRQ

caused by busy "while (wait_for_...);" loops. Add READ_ONCE() and
cpu_relax() to better indicate the intention and avoid any unwanted
compiler optimisations.

Fixes: eb972eab07 ("lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512190111.jxFSqxUH-lkp@intel.com/
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-12-19 15:09:09 +00:00
..
altera-stapl
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
amd-sbi
Merge 6.18-rc3 into char-misc-next
2025-10-27 07:48:19 +01:00
bcm-vk
treewide, timers: Rename from_timer() to timer_container_of()
2025-06-08 09:07:37 +02:00
c2port
sysfs: treewide: switch back to attribute_group::bin_attrs
2025-06-17 10:44:15 +02:00
cardreader
Merge tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-10-04 16:26:32 -07:00
cb710
misc: cb710: Fix a NULL vs IS_ERR() check in probe()
2025-11-26 15:09:34 +01:00
eeprom
eeprom: at25: fram: Fix chip range in comment
2025-10-22 07:59:57 +02:00
genwqe
misc: genwqe: Fix incorrect cmd field being reported in error
2025-09-06 16:00:32 +02:00
ibmasm
ibmasmfs: get rid of ibmasmfs_dir_ops
2025-11-16 01:35:04 -05:00
keba
misc: keba: Fix kernfs warning on module unload
2025-01-10 10:16:39 +01:00
lis3lv02d
misc: lis3lv02d: Use min to simplify lis3lv02d_misc_read
2025-10-22 07:59:57 +02:00
lkdtm
lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop
2025-12-19 15:09:09 +00:00
mchp_pci1xxxx
treewide: rename GPIO set callbacks back to their original names
2025-08-07 10:07:06 +02:00
mei
Merge tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2025-12-06 18:34:24 -08:00
ocxl
powerpc, ocxl: Fix extraction of struct xive_irq_data
2025-10-13 09:40:55 +05:30
pvpanic
Merge 6.9-rc7 into char-misc-testing
2024-05-08 19:21:51 +01:00
rp1
misc: rp1: Fix an error handling path in rp1_probe()
2025-11-26 15:09:49 +01:00
sgi-gru
misc: sgi-gru: Don't disable preemption in GRU driver
2024-10-09 12:47:01 -07:00
sgi-xp
treewide, timers: Rename from_timer() to timer_container_of()
2025-06-08 09:07:37 +02:00
uacce
uacce: Remove unnecessary IOMMU_DEV_FEAT_IOPF
2025-04-28 13:04:34 +02:00
vmw_vmci
vmw_vmci: fix typo in comment
2025-10-22 07:54:15 +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
misc: ad525x_dpot: Use str_enabled_disabled() in sysfs_show_reg()
2025-09-06 15:59:46 +02:00
ad525x_dpot.h
…
apds990x.c
misc: apds990x: Drop superfluous return statement
2025-08-19 12:37:13 +02:00
apds9802als.c
misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
2024-07-03 16:41:00 +02:00
atmel-ssc.c
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
bh1770glc.c
misc: bh1770glc: use pm_runtime_resume_and_get() in power_state_store
2025-11-26 15:09:37 +01:00
cs5535-mfgpt.c
x86/msr: Add explicit includes of <asm/msr.h>
2025-05-02 10:23:47 +02:00
ds1682.c
sysfs: treewide: switch back to bin_attribute::read()/write()
2025-06-17 10:44:13 +02:00
dummy-irq.c
…
dw-xdata-pcie.c
dw-xdata: Use str_write_read() in dw_xdata_start() and dw_xdata_perf()
2025-09-06 15:59:39 +02:00
enclosure.c
misc: enclosure: Use str_on_off() helper
2025-06-24 16:46:04 +01:00
fastrpc.c
misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup
2025-10-22 08:03:24 +02:00
gehc-achc.c
misc: gehc-achc: Follow renaming of SPI "master" to "controller"
2024-02-08 11:54:43 +00:00
hi6421v600-irq.c
misc: Use dev_fwnode()
2025-06-24 16:45:08 +01:00
hisi_hikey_usb.c
misc: hisi_hikey_usb: Use str_enabled_disabled() in hub_power_ctrl()
2025-08-19 12:37:15 +02:00
hmc6352.c
misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
2024-07-03 16:41:00 +02:00
hpilo.c
misc: hpilo: rename device creation loop variable
2024-01-30 16:19:43 -08:00
hpilo.h
…
ibmvmc.c
Merge tag 'char-misc-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2023-11-03 14:51:08 -10:00
ibmvmc.h
…
ics932s401.c
misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
2024-07-03 16:41:00 +02:00
isl29003.c
misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
2024-07-03 16:41:00 +02:00
isl29020.c
misc: isl29020: Fix the wrong format specifier
2024-11-12 12:54:53 +01:00
Kconfig
scsi: ufs: core: Fix RPMB link error by reversing Kconfig dependencies
2025-12-03 01:33:10 -05:00
kgdbts.c
kgdbts: fix hw_access_break_test
2024-08-13 11:27:38 +02:00
lan966x_pci.c
misc: Add support for LAN966x PCI device
2024-10-24 12:09:33 +02:00
lan966x_pci.dtso
misc: lan966x_pci: Fix dtc warn 'Missing interrupt-parent'
2024-11-04 14:34:25 +01:00
lattice-ecp3-config.c
move asm/unaligned.h to linux/unaligned.h
2024-10-02 17:23:23 -04:00
Makefile
char: misc: Move drivers/misc/misc_minor_kunit.c to drivers/char/
2025-08-19 12:41:17 +02:00
mrvl_cn10k_dpi.c
misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver
2024-07-10 14:58:29 +02:00
nsm.c
misc: nsm: drop owner assignment
2024-05-22 08:31:17 -04:00
ntsync.c
ntsync: convert ntsync_obj_get_fd() to FD_PREPARE()
2025-11-28 12:42:36 +01:00
open-dice.c
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
pch_phub.c
sysfs: treewide: switch back to bin_attribute::read()/write()
2025-06-17 10:44:13 +02:00
pci_endpoint_test.c
misc: pci_endpoint_test: Cleanup extra 0 initialization
2025-08-27 18:39:32 +05:30
phantom.c
[tree-wide] finally take no_llseek out
2024-09-27 08:18:43 -07:00
qcom-coincell.c
misc: Explicitly include correct DT includes
2023-08-04 15:39:04 +02:00
rpmb-core.c
rpmb: Remove some useless locking
2024-10-13 17:11:51 +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
Merge tag 'driver-core-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
2025-07-29 12:15:39 -07:00
sram.h
misc: sram: Improve and simplify clk handling
2023-03-09 17:31:53 +01:00
ti_fpc202.c
treewide: rename GPIO set callbacks back to their original names
2025-08-07 10:07:06 +02:00
tifm_7xx1.c
misc: tifm: use 'time_left' variable with wait_for_completion_timeout()
2024-07-03 16:40:18 +02:00
tifm_core.c
driver core: have match() callback in struct bus_type take a const *
2024-07-03 15:16:54 +02:00
tps6594-esm.c
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
tps6594-pfsm.c
misc: tps6594-pfsm: Add TI TPS652G1 PMIC PFSM
2025-07-10 09:58:06 +01:00
tsl2550.c
misc: tsl2550: replace simple_strtoul to kstrtoul
2024-09-03 12:34:31 +02:00
vcpu_stall_detector.c
misc: vcpu_stall_detector: Switch to use hrtimer_setup()
2025-02-18 11:19:04 +01:00
vmw_balloon.c
vmw_balloon: indicate success when effectively deflating during migration
2025-10-21 15:46:17 -07:00
xilinx_sdfec.c
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
xilinx_tmr_inject.c
Get rid of 'remove_new' relic from platform driver struct
2024-12-01 15:12:43 -08:00
xilinx_tmr_manager.c
misc: Explicitly include correct DT includes
2023-08-04 15:39:04 +02:00