From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 206987] [drm] [amdgpu] Whole system crashes when the driver is in mode_support_and_system_configuration
Date: Thu, 20 Aug 2020 04:21:09 +0000 [thread overview]
Message-ID: <bug-206987-2300-uuUXjU7FET@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-206987-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=206987
--- Comment #37 from krakopo@protonmail.com ---
I do see ldmxcsr in the disassembly:
ffffffff81038870 <kernel_fpu_begin>:
ffffffff81038870: e8 9b 07 03 00 callq ffffffff81069010
<__fentry__>
ffffffff81038875: 48 83 ec 10 sub $0x10,%rsp
ffffffff81038879: bf 01 00 00 00 mov $0x1,%edi
ffffffff8103887e: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
ffffffff81038885: 00 00
ffffffff81038887: 48 89 44 24 08 mov %rax,0x8(%rsp)
ffffffff8103888c: 31 c0 xor %eax,%eax
ffffffff8103888e: c7 44 24 04 00 00 00 movl $0x0,0x4(%rsp)
ffffffff81038895: 00
ffffffff81038896: e8 35 ae 08 00 callq ffffffff810c36d0
<preempt_count_add>
ffffffff8103889b: e8 80 fd ff ff callq ffffffff81038620
<irq_fpu_usable>
ffffffff810388a0: 65 8a 05 b1 f2 fd 7e mov %gs:0x7efdf2b1(%rip),%al
# 17b58 <in_kernel_fpu>
ffffffff810388a7: 65 c6 05 a9 f2 fd 7e movb
$0x1,%gs:0x7efdf2a9(%rip) # 17b58 <in_kernel_fpu>
ffffffff810388ae: 01
ffffffff810388af: 65 48 8b 3c 25 c0 7b mov %gs:0x17bc0,%rdi
ffffffff810388b6: 01 00
ffffffff810388b8: f6 47 26 20 testb $0x20,0x26(%rdi)
ffffffff810388bc: 74 3c je ffffffff810388fa
<kernel_fpu_begin+0x8a>
ffffffff810388be: 48 c7 c7 57 43 40 82 mov $0xffffffff82404357,%rdi
ffffffff810388c5: e8 46 41 9c 00 callq ffffffff819fca10
<__this_cpu_preempt_check>
ffffffff810388ca: c7 44 24 04 80 1f 00 movl $0x1f80,0x4(%rsp)
ffffffff810388d1: 00
ffffffff810388d2: 65 48 c7 05 82 f2 fd movq
$0x0,%gs:0x7efdf282(%rip) # 17b60 <fpu_fpregs_owner_ctx>
ffffffff810388d9: 7e 00 00 00 00
ffffffff810388de: 0f ae 54 24 04 ldmxcsr 0x4(%rsp)
ffffffff810388e3: db e3 fninit
ffffffff810388e5: 48 8b 44 24 08 mov 0x8(%rsp),%rax
ffffffff810388ea: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax
ffffffff810388f1: 00 00
ffffffff810388f3: 75 20 jne ffffffff81038915
<kernel_fpu_begin+0xa5>
ffffffff810388f5: 48 83 c4 10 add $0x10,%rsp
ffffffff810388f9: c3 retq
ffffffff810388fa: 48 8b 07 mov (%rdi),%rax
ffffffff810388fd: f6 c4 40 test $0x40,%ah
ffffffff81038900: 75 bc jne ffffffff810388be
<kernel_fpu_begin+0x4e>
ffffffff81038902: f0 80 4f 01 40 lock orb $0x40,0x1(%rdi)
ffffffff81038907: 48 81 c7 00 1b 00 00 add $0x1b00,%rdi
ffffffff8103890e: e8 5d fd ff ff callq ffffffff81038670
<copy_fpregs_to_fpstate>
ffffffff81038913: eb a9 jmp ffffffff810388be
<kernel_fpu_begin+0x4e>
ffffffff81038915: e8 36 3c 9c 00 callq ffffffff819fc550
<__stack_chk_fail>
ffffffff8103891a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
And yes I do have the "sse" flag in /proc/cpuinfo.
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next prev parent reply other threads:[~2020-08-20 4:21 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 19:51 [Bug 206987] New: [drm] [amdgpu] Whole system crashes when the driver is in mode_support_and_system_configuration bugzilla-daemon
2020-03-26 19:54 ` [Bug 206987] " bugzilla-daemon
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