On Wed, Aug 16, 2017 at 09:39:08PM +0300, Meelis Roos wrote: > > > > I noticed that in 4.13.0-rc4 there is a new error in dmesg on my sparc64 > > > > t5120 server: can't allocate MSI-X affinity masks. > > > > > > > > [ 30.274284] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 10.00.00.00-k. > > > > [ 30.274648] qla2xxx [0000:10:00.0]-001d: : Found an ISP2432 irq 21 iobase 0x000000c100d00000. > > > > [ 30.275447] qla2xxx 0000:10:00.0: can't allocate MSI-X affinity masks for 2 vectors > > > > [ 30.816882] scsi host1: qla2xxx > > > > [ 30.877294] qla2xxx: probe of 0000:10:00.0 failed with error -22 > > > > [ 30.877578] qla2xxx [0000:10:00.1]-001d: : Found an ISP2432 irq 22 iobase 0x000000c100d04000. > > > > [ 30.878387] qla2xxx 0000:10:00.1: can't allocate MSI-X affinity masks for 2 vectors > > > > [ 31.367083] scsi host1: qla2xxx > > > > [ 31.427500] qla2xxx: probe of 0000:10:00.1 failed with error -22 > > > > > > > > I do not know if the driver works since nothing is attached to the FC > > > > HBA at the moment, but from the error messages it looks like the driver > > > > fails to load. > > > > > > > > I booted 4.12 and 4.11 - the red error is not there but the failure > > > > seems to be the same error -22: > > > > 4.10.0 works, 4.11.0 errors out with EINVAL and 4.13-rc4 errorr sout > > with more verbose MSI messages. So something between 4.10 and 4.11 has > > broken it. > > I can not reproduice the older kernels that misbehave. I checked out > earlier kernels and recompiled them (old config lost, nothing changed > AFAIK), everything works up to 4.12 inclusive. > > > Also, 4.13-rc4 is broken on another sun4v here (T1000). So it seems to > > be sun4v interrupt related. > > This still holds - 4.13-rc4 has MSI trouble on at least 2 of my sun4v > machines. IIUC, that means v4.12 works and v4.13-rc4 does not, so this is a regression we introduced this cycle. If nobody steps up with a theory, bisecting might be the easiest path forward.
