regression: SCSI/SATA failure

[Bityutskiy, Artem]

Hi Christoph,

one of our test box Skylake servers does not boot with v4.16-rcX.
Bisection lead us to this commit:

84676c1f21e8 genirq/affinity: assign vectors to all possible CPUs

Reverting this single commit fixes the problem.

The server is a Dell R640 machine with the latest Dell BIOS. It has a
single SATA SSD and we do not use raid, even though the system does
have a megaraid controller.

Are you aware of this issue? Below is the failure message and the full
dmesg with some debugging boot parameters is here:

https://pastebin.com/raw/tTYrTAEQ

[  201.706075] sd 14:2:0:0: [sda] tag#0 task abort called for scmd(00000000c342d874)
[  201.720357] sd 14:2:0:0: [sda] tag#0 CDB: Read(10) 28 00 0d e7 ff 80 00 00 08 00
[  201.734621] sd 14:2:0:0: task abort: FAILED scmd(00000000c342d874)
[  201.754134] sd 14:2:0:0: target reset called for scmd(00000000c342d874)
[  201.767566] sd 14:2:0:0: [sda] tag#0 megasas: target reset FAILED!!
[  201.780690] sd 14:2:0:0: [sda] tag#0 Controller reset is requested due to IO timeout
[  201.780690] SCSI command pointer: (00000000c342d874)  SCSI host state: 5      SCSI 
[  201.809709] IO request frame:
[  201.809709] 
[  201.809710] f1000000 
[  201.827987] 00000000 
[  201.836901] 00000000 
[  201.846047] 5d880000 
[  201.855161] 00600002 
[  201.864093] 00000020 
[  201.872746] 00000000 
[  201.881168] 00001000 
[  201.889432] 
[  201.889432] 
[  201.897570] 00000000 
[  201.912011] 0000000a 
[  201.919897] 00000000 
[  201.927608] 00000000 
[  201.935275] 00000000 
[  201.943047] 00000000 
[  201.950516] 00000000 
[  201.957709] 02000000 
[  201.964776] 
[  201.964776] 
[  201.971731] e70d0028 
[  201.983967] 000080ff 
[  201.990676] 00000008 
[  201.997192] 00000000 
[  202.003611] 00000000 
[  202.009812] 00000000 
[  202.015847] 00000000 
[  202.021770] 00000000 
[  202.027576] 
[  202.027576] 
[  202.033382] 00140012 
[  202.043209] 00000009 
[  202.048521] 0de7ff80 
[  202.053711] 00000000 
[  202.058818] 00000008 
[  202.063850] 00000000 
[  202.068797] 00020100 
[  202.073549] 00000000 
[  202.078131] 
[  202.078131] 
[  202.082708] beb56000 
[  202.089903] 0000002f 
[  202.094106] 00001000 
[  202.098230] 40000000 
[  202.102238] 00000000 
[  202.106134] 00000000 
[  202.109878] 00000000 
[  202.113456] 00000000 
[  202.117008] 
[  202.117008] 
[  202.120545] 00000000 
[  202.126100] 00000000 
[  202.129656] 00000000 
[  202.133191] 00000000 
[  202.136716] 00000000 
[  202.140241] 00000000 
[  202.143767] 00000000 
[  202.147264] 00000000 
[  202.150772] 
[  202.150772] 
[  202.154257] 00000000 
[  202.159702] 00000000 
[  202.163206] 00000000 
[  202.166706] 00000000 
[  202.170204] 00000000 
[  202.173697] 00000000 
[  202.177186] 00000000 
[  202.180659] 00000000 
[  202.184135] 
[  202.184135] 
[  202.187592] 00000000 
[  202.192952] 00000000 
[  202.196440] 00000000 
[  202.199892] 00000000 
[  202.203349] 00000000 
[  202.206798] 00000000 
[  202.210252] 00000000 
[  202.213691] 00000000 
[  202.217140] 

-- 
Best Regards,
Artem Bityutskiy
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