Re: [PATCH] perf/x86/intel/bts: don't dereference ds unconditionally

2016-09-20 Thread Alexander Shishkin
Alexander Shishkin writes: > Sebastian Andrzej Siewior writes: > >> From: Sebastian Andrzej Siewior >> >> Since commit 4d4c47412464 ("perf/x86/intel/bts: Fix BTS PMI detection") >> my box goes boom on boot: >> >> | node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 >> | BUG: unable to handle kernel

Re: [PATCH] perf/x86/intel/bts: don't dereference ds unconditionally

2016-09-20 Thread Alexander Shishkin
Sebastian Andrzej Siewior writes: > From: Sebastian Andrzej Siewior > > Since commit 4d4c47412464 ("perf/x86/intel/bts: Fix BTS PMI detection") > my box goes boom on boot: > > | node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 > | BUG: unable to handle kernel NULL pointer dereference at 00

[PATCH] perf/x86/intel/bts: don't dereference ds unconditionally

2016-09-20 Thread Sebastian Andrzej Siewior
From: Sebastian Andrzej Siewior Since commit 4d4c47412464 ("perf/x86/intel/bts: Fix BTS PMI detection") my box goes boom on boot: | node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 | BUG: unable to handle kernel NULL pointer dereference at 0018 | IP: [] intel_bts_interrupt+0x43/0x130 |