Revision b90d72a6bfdb5e5c62cd223a8cdf4045bfbcb94d authored by Will Deacon on 12 January 2021, 22:18:55 UTC, committed by Catalin Marinas on 13 January 2021, 15:08:41 UTC
This reverts commit 367c820ef08082e68df8a3bc12e62393af21e4b5. lockup_detector_init() makes heavy use of per-cpu variables and must be called with preemption disabled. Usually, it's handled early during boot in kernel_init_freeable(), before SMP has been initialised. Since we do not know whether or not our PMU interrupt can be signalled as an NMI until considerably later in the boot process, the Arm PMU driver attempts to re-initialise the lockup detector off the back of a device_initcall(). Unfortunately, this is called from preemptible context and results in the following splat: | BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1 | caller is debug_smp_processor_id+0x20/0x2c | CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.10.0+ #276 | Hardware name: linux,dummy-virt (DT) | Call trace: | dump_backtrace+0x0/0x3c0 | show_stack+0x20/0x6c | dump_stack+0x2f0/0x42c | check_preemption_disabled+0x1cc/0x1dc | debug_smp_processor_id+0x20/0x2c | hardlockup_detector_event_create+0x34/0x18c | hardlockup_detector_perf_init+0x2c/0x134 | watchdog_nmi_probe+0x18/0x24 | lockup_detector_init+0x44/0xa8 | armv8_pmu_driver_init+0x54/0x78 | do_one_initcall+0x184/0x43c | kernel_init_freeable+0x368/0x380 | kernel_init+0x1c/0x1cc | ret_from_fork+0x10/0x30 Rather than bodge this with raw_smp_processor_id() or randomly disabling preemption, simply revert the culprit for now until we figure out how to do this properly. Reported-by: Lecopzer Chen <lecopzer.chen@mediatek.com> Signed-off-by: Will Deacon <will@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Sumit Garg <sumit.garg@linaro.org> Cc: Alexandru Elisei <alexandru.elisei@arm.com> Link: https://lore.kernel.org/r/20201221162249.3119-1-lecopzer.chen@mediatek.com Link: https://lore.kernel.org/r/20210112221855.10666-1-will@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
1 parent df06824
File | Mode | Size |
---|---|---|
ac97 | ||
sof | ||
ac97_codec.h | -rw-r--r-- | 15.7 KB |
aci.h | -rw-r--r-- | 2.4 KB |
ad1816a.h | -rw-r--r-- | 4.7 KB |
ad1843.h | -rw-r--r-- | 1.5 KB |
adau1373.h | -rw-r--r-- | 706 bytes |
ak4113.h | -rw-r--r-- | 10.2 KB |
ak4114.h | -rw-r--r-- | 9.5 KB |
ak4117.h | -rw-r--r-- | 8.3 KB |
ak4531_codec.h | -rw-r--r-- | 2.4 KB |
ak4641.h | -rw-r--r-- | 476 bytes |
ak4xxx-adda.h | -rw-r--r-- | 2.7 KB |
alc5623.h | -rw-r--r-- | 536 bytes |
asequencer.h | -rw-r--r-- | 2.9 KB |
asound.h | -rw-r--r-- | 590 bytes |
asoundef.h | -rw-r--r-- | 16.0 KB |
compress_driver.h | -rw-r--r-- | 7.9 KB |
control.h | -rw-r--r-- | 8.6 KB |
core.h | -rw-r--r-- | 13.4 KB |
cs35l33.h | -rw-r--r-- | 888 bytes |
cs35l34.h | -rw-r--r-- | 741 bytes |
cs35l35.h | -rw-r--r-- | 2.2 KB |
cs35l36.h | -rw-r--r-- | 772 bytes |
cs4231-regs.h | -rw-r--r-- | 7.6 KB |
cs4271.h | -rw-r--r-- | 961 bytes |
cs42l52.h | -rw-r--r-- | 592 bytes |
cs42l56.h | -rw-r--r-- | 1.0 KB |
cs42l73.h | -rw-r--r-- | 361 bytes |
cs8403.h | -rw-r--r-- | 7.9 KB |
cs8427.h | -rw-r--r-- | 9.7 KB |
da7213.h | -rw-r--r-- | 1.0 KB |
da7218.h | -rw-r--r-- | 2.4 KB |
da7219-aad.h | -rw-r--r-- | 2.2 KB |
da7219.h | -rw-r--r-- | 998 bytes |
da9055.h | -rw-r--r-- | 707 bytes |
designware_i2s.h | -rw-r--r-- | 1.6 KB |
dmaengine_pcm.h | -rw-r--r-- | 6.5 KB |
emu10k1.h | -rw-r--r-- | 88.7 KB |
emu10k1_synth.h | -rw-r--r-- | 693 bytes |
emu8000.h | -rw-r--r-- | 3.3 KB |
emu8000_reg.h | -rw-r--r-- | 9.5 KB |
emux_legacy.h | -rw-r--r-- | 4.7 KB |
emux_synth.h | -rw-r--r-- | 6.8 KB |
es1688.h | -rw-r--r-- | 2.9 KB |
graph_card.h | -rw-r--r-- | 315 bytes |
gus.h | -rw-r--r-- | 19.6 KB |
hda_chmap.h | -rw-r--r-- | 2.6 KB |
hda_codec.h | -rw-r--r-- | 17.2 KB |
hda_component.h | -rw-r--r-- | 2.0 KB |
hda_hwdep.h | -rw-r--r-- | 736 bytes |
hda_i915.h | -rw-r--r-- | 589 bytes |
hda_register.h | -rw-r--r-- | 10.2 KB |
hda_regmap.h | -rw-r--r-- | 6.8 KB |
hda_verbs.h | -rw-r--r-- | 16.9 KB |
hdaudio.h | -rw-r--r-- | 20.9 KB |
hdaudio_ext.h | -rw-r--r-- | 5.4 KB |
hdmi-codec.h | -rw-r--r-- | 2.4 KB |
hwdep.h | -rw-r--r-- | 1.9 KB |
i2c.h | -rw-r--r-- | 2.8 KB |
info.h | -rw-r--r-- | 7.9 KB |
initval.h | -rw-r--r-- | 2.4 KB |
intel-dsp-config.h | -rw-r--r-- | 869 bytes |
intel-nhlt.h | -rw-r--r-- | 2.7 KB |
jack.h | -rw-r--r-- | 3.0 KB |
l3.h | -rw-r--r-- | 524 bytes |
madera-pdata.h | -rw-r--r-- | 1.9 KB |
max9768.h | -rw-r--r-- | 729 bytes |
max98088.h | -rw-r--r-- | 1.0 KB |
max98090.h | -rw-r--r-- | 534 bytes |
max98095.h | -rw-r--r-- | 1.3 KB |
memalloc.h | -rw-r--r-- | 3.8 KB |
minors.h | -rw-r--r-- | 3.7 KB |
mixer_oss.h | -rw-r--r-- | 1.7 KB |
mpu401.h | -rw-r--r-- | 3.8 KB |
omap-hdmi-audio.h | -rw-r--r-- | 971 bytes |
opl3.h | -rw-r--r-- | 11.6 KB |
opl4.h | -rw-r--r-- | 459 bytes |
pcm-indirect.h | -rw-r--r-- | 5.0 KB |
pcm.h | -rw-r--r-- | 50.3 KB |
pcm_drm_eld.h | -rw-r--r-- | 183 bytes |
pcm_iec958.h | -rw-r--r-- | 332 bytes |
pcm_oss.h | -rw-r--r-- | 2.0 KB |
pcm_params.h | -rw-r--r-- | 8.7 KB |
pt2258.h | -rw-r--r-- | 513 bytes |
pxa2xx-lib.h | -rw-r--r-- | 2.7 KB |
rawmidi.h | -rw-r--r-- | 5.6 KB |
rt1015.h | -rw-r--r-- | 283 bytes |
rt286.h | -rw-r--r-- | 314 bytes |
rt298.h | -rw-r--r-- | 373 bytes |
rt5514.h | -rw-r--r-- | 399 bytes |
rt5645.h | -rw-r--r-- | 665 bytes |
rt5659.h | -rw-r--r-- | 880 bytes |
rt5660.h | -rw-r--r-- | 578 bytes |
rt5663.h | -rw-r--r-- | 476 bytes |
rt5665.h | -rw-r--r-- | 761 bytes |
rt5668.h | -rw-r--r-- | 646 bytes |
rt5682.h | -rw-r--r-- | 901 bytes |
s3c24xx_uda134x.h | -rw-r--r-- | 229 bytes |
sb.h | -rw-r--r-- | 10.3 KB |
sb16_csp.h | -rw-r--r-- | 2.1 KB |
seq_device.h | -rw-r--r-- | 2.1 KB |
seq_kernel.h | -rw-r--r-- | 3.3 KB |
seq_midi_emul.h | -rw-r--r-- | 6.6 KB |
seq_midi_event.h | -rw-r--r-- | 1.3 KB |
seq_oss.h | -rw-r--r-- | 2.2 KB |
seq_oss_legacy.h | -rw-r--r-- | 360 bytes |
seq_virmidi.h | -rw-r--r-- | 2.1 KB |
sh_dac_audio.h | -rw-r--r-- | 441 bytes |
sh_fsi.h | -rw-r--r-- | 693 bytes |
simple_card.h | -rw-r--r-- | 529 bytes |
simple_card_utils.h | -rw-r--r-- | 6.7 KB |
snd_wavefront.h | -rw-r--r-- | 5.6 KB |
soc-acpi-intel-match.h | -rw-r--r-- | 2.0 KB |
soc-acpi.h | -rw-r--r-- | 5.3 KB |
soc-card.h | -rw-r--r-- | 2.0 KB |
soc-component.h | -rw-r--r-- | 18.4 KB |
soc-dai.h | -rw-r--r-- | 16.4 KB |
soc-dapm.h | -rw-r--r-- | 32.2 KB |
soc-dpcm.h | -rw-r--r-- | 4.9 KB |
soc-jack.h | -rw-r--r-- | 3.7 KB |
soc-link.h | -rw-r--r-- | 1.1 KB |
soc-topology.h | -rw-r--r-- | 5.7 KB |
soc.h | -rw-r--r-- | 45.0 KB |
sof.h | -rw-r--r-- | 2.6 KB |
soundfont.h | -rw-r--r-- | 3.8 KB |
spear_dma.h | -rw-r--r-- | 350 bytes |
spear_spdif.h | -rw-r--r-- | 345 bytes |
sta32x.h | -rw-r--r-- | 1015 bytes |
sta350.h | -rw-r--r-- | 1.4 KB |
tas2552-plat.h | -rw-r--r-- | 283 bytes |
tas5086.h | -rw-r--r-- | 210 bytes |
tea6330t.h | -rw-r--r-- | 468 bytes |
timer.h | -rw-r--r-- | 5.0 KB |
tlv.h | -rw-r--r-- | 1.6 KB |
tlv320aic32x4.h | -rw-r--r-- | 1.3 KB |
tlv320aic3x.h | -rw-r--r-- | 1.7 KB |
tlv320dac33-plat.h | -rw-r--r-- | 574 bytes |
tpa6130a2-plat.h | -rw-r--r-- | 291 bytes |
uda134x.h | -rw-r--r-- | 451 bytes |
uda1380.h | -rw-r--r-- | 335 bytes |
util_mem.h | -rw-r--r-- | 1.6 KB |
vx_core.h | -rw-r--r-- | 14.7 KB |
wavefront.h | -rw-r--r-- | 18.1 KB |
wm0010.h | -rw-r--r-- | 466 bytes |
wm1250-ev1.h | -rw-r--r-- | 510 bytes |
wm2000.h | -rw-r--r-- | 479 bytes |
wm2200.h | -rw-r--r-- | 1.3 KB |
wm5100.h | -rw-r--r-- | 1.1 KB |
wm8903.h | -rw-r--r-- | 15.0 KB |
wm8904.h | -rw-r--r-- | 7.2 KB |
wm8955.h | -rw-r--r-- | 442 bytes |
wm8960.h | -rw-r--r-- | 888 bytes |
wm8962.h | -rw-r--r-- | 1.7 KB |
wm8993.h | -rw-r--r-- | 1.1 KB |
wm8996.h | -rw-r--r-- | 1.3 KB |
wm9081.h | -rw-r--r-- | 515 bytes |
wm9090.h | -rw-r--r-- | 634 bytes |
wss.h | -rw-r--r-- | 7.8 KB |
Computing file changes ...