RE: 答复: [PATCH] drm/amd/amdgpu: fix over-bound accessing in amdgpu_cs_wait_any_fence
Deng, Emily
Emily.Deng at amd.com
Fri Nov 17 05:43:30 UTC 2017
Hi Roger,
Not the same. When the fence already signaled, the array[first] will be NULL.
Best Wishes,
Emily Deng
> -----Original Message-----
> From: He, Roger
> Sent: Friday, November 17, 2017 1:32 PM
> To: Zhou, David(ChunMing) <David1.Zhou at amd.com>; Qu, Jim
> <Jim.Qu at amd.com>; amd-gfx at lists.freedesktop.org
> Cc: Koenig, Christian <Christian.Koenig at amd.com>; Deng, Emily
> <Emily.Deng at amd.com>
> Subject: RE: 答复: [PATCH] drm/amd/amdgpu: fix over-bound accessing in
> amdgpu_cs_wait_any_fence
>
> Theoretically, if first < fence_count, array[first] will not be NULL.
>
> Hi Emily:
>
> do you remember the issue you fixed has same error log?
>
>
> Thanks
> Roger(Hongbo.He)
> -----Original Message-----
> From: Zhou, David(ChunMing)
> Sent: Friday, November 17, 2017 1:24 PM
> To: Qu, Jim <Jim.Qu at amd.com>; He, Roger <Hongbo.He at amd.com>; amd-
> gfx at lists.freedesktop.org
> Cc: Zhou, David(ChunMing) <David1.Zhou at amd.com>; Koenig, Christian
> <Christian.Koenig at amd.com>
> Subject: Re: 答复: [PATCH] drm/amd/amdgpu: fix over-bound accessing in
> amdgpu_cs_wait_any_fence
>
> Yes, As Jim pointed out, you lacks the array[] checking.
>
> you can just change to if (first < fence_count && array[first]), otherwise it's a
> good fix for regression.
>
>
> Regards,
>
> David Zhou
>
>
> On 2017年11月17日 13:16, Qu, Jim wrote:
> > Hi Roger:
> >
> > - if (array[first])
> > - r = array[first]->error;
> > - else
> > + if (first == ~0)
> > r = 0;
> > + else
> > + r = array[first]->error;
> >
> > // The patch looks like change original logic that miss to check array[first].
> >
> > Thanks
> > JimQu
> >
> > ________________________________________
> > 发件人: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> 代表 Roger
> He
> > <Hongbo.He at amd.com>
> > 发送时间: 2017年11月17日 13:04
> > 收件人: amd-gfx at lists.freedesktop.org
> > 抄送: Zhou, David(ChunMing); He, Roger; Koenig, Christian
> > 主题: [PATCH] drm/amd/amdgpu: fix over-bound accessing in
> > amdgpu_cs_wait_any_fence
> >
> > fix the following issue:
> >
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.712090] Oops: 0000 [#2]
> > SMP Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.712481] Modules
> linked in: amdgpu(OE) chash ttm(OE) drm_kms_helper(OE) drm(OE)
> i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt intel_rapl
> snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal
> intel_powerclamp snd_hda_codec_hdmi coretemp snd_hda_intel
> snd_hda_codec snd_hda_core snd_hwdep snd_pcm kvm snd_seq_midi
> snd_seq_midi_event snd_rawmidi snd_seq irqbypass crct10dif_pclmul
> crc32_pclmul ghash_clmulni_intel pcbc snd_seq_device snd_timer aesni_intel
> snd mei_me mei aes_x86_64 crypto_simd serio_raw eeepc_wmi glue_helper
> asus_wmi sparse_keymap cryptd soundcore shpchp wmi_bmof lpc_ich
> mac_hid tpm_infineon nfsd auth_rpcgss nfs_acl lockd parport_pc grace
> ppdev sunrpc lp parport autofs4 hid_generic usbhid ahci mxm_wmi r8169
> libahci hid mii wmi video
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.715120] CPU: 1 PID: 1330
> Comm: deqp-vk Tainted: G D OE 4.13.0-custom #1
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.715879] Hardware name:
> > ASUS All Series/Z87-A, BIOS 1802 01/28/2014 Nov 15 17:40:25
> > jenkins-MS-7984 kernel: [ 146.716658] task: ffff9b7115728000
> > task.stack: ffffb178016e0000 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.717494] RIP: 0010:amdgpu_cs_wait_fences_ioctl+0x20b/0x2e0
> [amdgpu]
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.718312] RSP:
> > 0018:ffffb178016e3cb0 EFLAGS: 00010246 Nov 15 17:40:25 jenkins-MS-
> 7984
> > kernel: [ 146.719270] RAX: 00000000ffffffff RBX: ffffb178016e3d90
> > RCX: 0000000000000000 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.720247] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
> > ffff9b7116a1d8a8 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.721246] RBP: ffffb178016e3d00 R08: 00000000ffffffff R09:
> > 0000000000000000 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.722262] R10: 000000000000ed00 R11: ffffb178016e3d90 R12:
> > ffff9b7116a1d8a8 Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.723299]
> R13: ffff9b7000707020 R14: 0000000000000001 R15: 0000000000000000
> Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.724358] FS:
> 00007f89f3af4740(0000) GS:ffff9b712ec80000(0000)
> knlGS:0000000000000000 Nov 15 17:40:25 jenkins-MS-7984 kernel:
> [ 146.725447] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Nov 15
> 17:40:25 jenkins-MS-7984 kernel: [ 146.726550] CR2: ffff9b7916a1d8a0 CR3:
> 000000022042e000 CR4: 00000000001406e0 Nov 15 17:40:25 jenkins-MS-
> 7984 kernel: [ 146.727687] DR0: 0000000000000000 DR1:
> 0000000000000000 DR2: 0000000000000000 Nov 15 17:40:25 jenkins-MS-
> 7984 kernel: [ 146.728837] DR3: 0000000000000000 DR6: 00000000fffe0ff0
> DR7: 0000000000000400 Nov 15 17:40:25 jenkins-MS-7984 kernel:
> [ 146.729992] Call Trace:
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.731193] ?
> > amdgpu_cs_fence_to_handle_ioctl+0x1c0/0x1c0 [amdgpu] Nov 15
> 17:40:25
> > jenkins-MS-7984 kernel: [ 146.732406] drm_ioctl_kernel+0x69/0xb0
> > [drm] Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.733626]
> > drm_ioctl+0x2d2/0x390 [drm] Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.734883] ? amdgpu_cs_fence_to_handle_ioctl+0x1c0/0x1c0 [amdgpu]
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.736135] ?
> > __do_fault+0x1e/0x70 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.737392] ? __handle_mm_fault+0x8ae/0x10f0 Nov 15 17:40:25
> > jenkins-MS-7984 kernel: [ 146.738665] ? apparmor_mmap_file+0x18/0x20
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.739980]
> > amdgpu_drm_ioctl+0x4c/0x80 [amdgpu] Nov 15 17:40:25 jenkins-MS-7984
> > kernel: [ 146.741277] do_vfs_ioctl+0x96/0x5b0 Nov 15 17:40:25
> > jenkins-MS-7984 kernel: [ 146.742582] ? handle_mm_fault+0xd3/0x1f0
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.743899] ?
> > sched_clock+0x9/0x10 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.745224] SyS_ioctl+0x79/0x90 Nov 15 17:40:25 jenkins-MS-7984
> > kernel: [ 146.746553] ? vtime_user_exit+0x29/0x70 Nov 15 17:40:25
> > jenkins-MS-7984 kernel: [ 146.747897] do_syscall_64+0x6e/0x160 Nov
> > 15 17:40:25 jenkins-MS-7984 kernel: [ 146.749247]
> > entry_SYSCALL64_slow_path+0x25/0x25
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.750614] RIP:
> > 0033:0x7f89f1fdff07 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.751987] RSP: 002b:00007ffd4c6262d8 EFLAGS: 00000202 ORIG_RAX:
> > 0000000000000010 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.753407] RAX: ffffffffffffffda RBX: 0000000000000001 RCX:
> > 00007f89f1fdff07 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.754847] RDX: 00007ffd4c6263a0 RSI: 00000000c0186452 RDI:
> > 0000000000000005 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.756302] RBP: 00007ffd4c626310 R08: 0000000000000001 R09:
> > 00007ffd4c62642c Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.757768] R10: 000000000000edf2 R11: 0000000000000202 R12:
> > 00007ffd4c6264b0 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.759243] R13: 00000000000186a0 R14: 0000000000000000 R15:
> > 00007ffd4c626700 Nov 15 17:40:25 jenkins-MS-7984 kernel: [
> > 146.760725] Code: ff ff ff e8 08 38 cd e6 eb e0 44 89 45 d4 44 89 c0
> > ba 01 00 00 00 48 c7 43 08 00 00 00 00 48 c7 43 10 00 00 00 00 89 13
> > 89 43 04 <4b> 8b 04 c4 4c 63 78 58 eb a5 48 8b 4d b0 4c 8d 45 d4 ba 01
> > 00 Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.762416] RIP:
> > amdgpu_cs_wait_fences_ioctl+0x20b/0x2e0 [amdgpu] RSP:
> ffffb178016e3cb0
> > Nov 15 17:40:25 jenkins-MS-7984 kernel: [ 146.764058] CR2:
> > ffff9b7916a1d8a0
> >
> > Change-Id: I60d90d13dda69cd8aa6396f0246379f8390e3fb1
> > Signed-off-by: Roger He <Hongbo.He at amd.com>
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> > index ee77364..ad00f01 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> > @@ -1503,10 +1503,10 @@ static int amdgpu_cs_wait_any_fence(struct
> amdgpu_device *adev,
> > wait->out.status = (r > 0);
> > wait->out.first_signaled = first;
> >
> > - if (array[first])
> > - r = array[first]->error;
> > - else
> > + if (first == ~0)
> > r = 0;
> > + else
> > + r = array[first]->error;
> >
> > err_free_fence_array:
> > for (i = 0; i < fence_count; i++)
> > --
> > 2.7.4
> >
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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