lkml.org 
[lkml]   [2021]   [Jul]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
Subject[perf] fuzzer triggers unchecked MSR access error: WRMSR to 0x318
Hello

ther perf_fuzzer on current linux-git on a Haswell system triggers the
following.

I've truncated the call chain, as it goes on for quite a while, let me
know if you want/need more information.

Vince

[32694.087403] unchecked MSR access error: WRMSR to 0x318 (tried to write 0x0000000000000000) at rIP: 0xffffffff8106f854 (native_write_msr+0x4/0x20)
[32694.101374] Call Trace:
[32694.103974] perf_clear_dirty_counters+0x86/0x100
[32694.109027] switch_mm_irqs_off+0x1d0/0x430
[32694.113498] __schedule+0x29f/0x1490
[32694.117300] ? cr4_update_irqsoff+0x2a/0x30
[32694.121762] ? switch_mm_irqs_off+0x1ba/0x430
[32694.126418] ? rcu_eqs_exit.constprop.0+0x2e/0x60
[32694.131515] ? cpuidle_enter_state+0xb7/0x350
[32694.136152] schedule_idle+0x26/0x40
[32694.139974] do_idle+0x16e/0x280
[32694.143421] cpu_startup_entry+0x19/0x20
[32694.147643] secondary_startup_64_no_verify+0xb0/0xbb
[32694.973583] Call Trace:
[32694.976215] perf_clear_dirty_counters+0x86/0x100
[32694.981290] switch_mm_irqs_off+0x1d0/0x430
[32694.985797] __schedule+0x29f/0x1490
[32694.989664] ? cr4_update_irqsoff+0x2a/0x30
[32694.994134] ? switch_mm_irqs_off+0x1ba/0x430
[32694.998789] ? rcu_eqs_exit.constprop.0+0x2e/0x60
[32695.003831] ? cpuidle_enter_state+0xb7/0x350
[32695.008521] schedule_idle+0x26/0x40
[32695.012362] do_idle+0x16e/0x280
[32695.015838] cpu_startup_entry+0x19/0x20
[32695.020041] secondary_startup_64_no_verify+0xb0/0xbb
[32695.126530] Call Trace:
[32695.129184] perf_clear_dirty_counters+0x86/0x100
[32695.134268] switch_mm_irqs_off+0x1d0/0x430
[32695.138757] __schedule+0x29f/0x1490
[32695.142577] ? tick_nohz_get_sleep_length+0x6b/0xa0
[32695.147806] ? rcu_eqs_exit.constprop.0+0x2e/0x60
[32695.152806] ? cpuidle_enter_state+0xb7/0x350
[32695.157500] schedule_idle+0x26/0x40
[32695.161342] do_idle+0x16e/0x280
[32695.164798] cpu_startup_entry+0x19/0x20
[32695.169010] secondary_startup_64_no_verify+0xb0/0xbb

\
 
 \ /
  Last update: 2021-07-28 18:50    [W:0.061 / U:2.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site