[KDL] page fault when trying to profile an app

[KapiX]

profile objects/Koder

Effect: panic: page fault but interrupts were disabled

Stack trace attached.

[KapiX]

touched area

[KapiX]

Around hrev53511, x86_64, happens only on my desktop system (6c12t).

On a laptop (2c4t) it works fine.

[waddlesplash]

The accessed address is the area's base address, and as per the KDL output, all pages seem locked, indeed. So I am pretty baffled as to what is going on here.

[korli]

Please post a syslog (might be cpu features related).

[KapiX]

I don't see anything about the CPU in syslog; it's i7-8700K.

[korli]

this syslog is weird, 4 different boots with the first part missing.

[KapiX]

That might be because I'm using EFI and it apparently it logs only to serial:

​https://git.haiku-os.org/haiku/tree/src/system/boot/platform/efi/debug.cpp cf. ​https://git.haiku-os.org/haiku/tree/src/system/boot/platform/bios_ia32/debug.cpp

[KapiX]

cat /proc/cpuinfo from Linux for 1st core:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 158
model name      : Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
stepping        : 10
microcode       : 0xb4
cpu MHz         : 800.051
cache size      : 12288 KB
physical id     : 0
siblings        : 12
core id         : 0
cpu cores       : 6
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 22
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
bogomips        : 7392.00
clflush size    : 64
cache_alignment : 64
address sizes   : 39 bits physical, 48 bits virtual
power management:

[KapiX]

​https://review.haiku-os.org/c/haiku/+/1890

[waddlesplash]

Fix merged in hrev53517.

[nielx]

Assign tickets with status=closed and resolution=fixed within the R1/beta2 development window to the R1/beta2 Milestone