On Mon, 2020-10-05 at 10:41 +0200, Christoph Hellwig wrote: > Hi Martin, > > this series tidies up various loose ends in the SCSI I/O submission path. Reverting this patchset on the top of today's linux-next fixed the boot failures below with libata, i.e., git revert --no-edit 653eb7c99d84..ed7fb2d018fd == Easy to reproduce using qemu-kvm "-hda" CONFIG_ATA_PIIX=y. == .config: https://gitlab.com/cailca/linux-mm/-/blob/master/x86.config [ 46.047499][ T757] ata2.00: WARNING: zero len r/w req [ 46.049734][ T644] ata2.00: WARNING: zero len r/w req [ 46.051962][ T757] ata2.00: WARNING: zero len r/w req [ 46.054182][ T644] ata2.00: WARNING: zero len r/w req [ 46.058018][ T757] ata2.00: WARNING: zero len r/w req [ 46.060514][ T644] ata2.00: WARNING: zero len r/w req [ 46.065764][ T757] ata2.00: WARNING: zero len r/w req [ 46.068005][ T644] ata2.00: WARNING: zero len r/w req [ 46.070192][ T644] ata2.00: WARNING: zero len r/w req [ 46.072379][ T644] ata2.00: WARNING: zero len r/w req [ 46.074629][ T644] ata2.00: WARNING: zero len r/w req [ 46.077255][ T644] ata2.00: WARNING: zero len r/w req [ 46.081553][ C36] sr 1:0:0:0: [sr0] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s [ 46.086336][ C36] sr 1:0:0:0: [sr0] tag#0 CDB: opcode=0x28 [ 46.089171][ C36] blk_update_request: I/O error, dev sr0, sector 2097136 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0 [ 46.094979][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.097526][ T757] blk_update_request: I/O error, dev sr0, sector 2097136 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.102364][ T757] Buffer I/O error on dev sr0, logical block 2097136, async page read [ 46.106080][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.108590][ T757] blk_update_request: I/O error, dev sr0, sector 2097137 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.113234][ T757] Buffer I/O error on dev sr0, logical block 2097137, async page read [ 46.117053][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.119581][ T757] blk_update_request: I/O error, dev sr0, sector 2097138 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.124382][ T757] Buffer I/O error on dev sr0, logical block 2097138, async page read [ 46.128545][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.131038][ T757] blk_update_request: I/O error, dev sr0, sector 2097139 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.135905][ T757] Buffer I/O error on dev sr0, logical block 2097139, async page read [ 46.139835][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.142422][ T757] blk_update_request: I/O error, dev sr0, sector 2097140 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.147240][ T757] Buffer I/O error on dev sr0, logical block 2097140, async page read [ 46.150764][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.153248][ T757] blk_update_request: I/O error, dev sr0, sector 2097141 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.158439][ T757] Buffer I/O error on dev sr0, logical block 2097141, async page read [ 46.162383][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.165062][ T757] blk_update_request: I/O error, dev sr0, sector 2097142 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.169785][ T757] Buffer I/O error on dev sr0, logical block 2097142, async page read [ 46.173252][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.175968][ T757] blk_update_request: I/O error, dev sr0, sector 2097143 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 46.181049][ T757] Buffer I/O error on dev sr0, logical block 2097143, async page read [ 46.184779][ C36] sr 1:0:0:0: [sr0] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s [ 46.188966][ C36] sr 1:0:0:0: [sr0] tag#0 CDB: opcode=0x28 [ 46.191731][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.194223][ T757] Buffer I/O error on dev sr0, logical block 0, async page read [ 46.197976][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.200781][ T757] Buffer I/O error on dev sr0, logical block 1, async page read [ 46.204221][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.207133][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.209790][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer [ 46.212464][ T757] sr 1:0:0:0: [sr0] tag#0 unaligned transfer == baremetal with ahci == [ 14.560235][ T515] ata1.00: WARNING: zero len r/w req [ 14.560397][ T515] ata1.00: WARNING: zero len r/w req [ 14.560450][ T515] ata1.00: WARNING: zero len r/w req [ 14.560502][ T515] ata1.00: WARNING: zero len r/w req [ 14.560594][ T515] ata1.00: WARNING: zero len r/w req [ 14.560644][ T515] ata1.00: WARNING: zero len r/w req [ 14.560709][ C100] sd 0:0:0:0: [sdb] tag#7 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s [ 14.560790][ C100] sd 0:0:0:0: [sdb] tag#7 CDB: opcode=0x35 35 00 00 00 00 00 00 00 00 00 [ 14.560869][ C100] blk_update_request: I/O error, dev sdb, sector 0 op 0x1:(WRITE) flags 0x800 phys_seg 0 prio class 0 [ 14.562124][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562172][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562217][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562262][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562317][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562361][ T1274] ata1.00: WARNING: zero len r/w req [ 14.562412][ C100] sd 0:0:0:0: [sdb] tag#8 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=0x00 cmd_age=0s [ 14.562465][ C100] sd 0:0:0:0: [sdb] tag#8 CDB: opcode=0x35 35 00 00 00 00 00 00 00 00 00 [ 14.562517][ C100] blk_update_request: I/O error, dev sdb, sector 1880188816 op 0x1:(WRITE) flags 0x9800 phys_seg 1 prio class 0
