Hi all, Today's qemu test boot (powerpc pseries_le_defconfig) produced this warning: [ 2.048588][ T1] ipr: IBM Power RAID SCSI Device Driver version: 2.6.4 (March 14, 2017) [ 2.051560][ T1] ------------[ cut here ]------------ [ 2.052297][ T1] WARNING: CPU: 0 PID: 1 at kernel/workqueue.c:5925 workqueue_sysfs_register+0x20/0x1f0 [ 2.053294][ T1] Modules linked in: [ 2.053678][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.4.0-rc1-01511-g91b79de175e1 #1 [ 2.053899][ T1] Hardware name: IBM pSeries (emulated by qemu) POWER8 (raw) 0x4d0200 0xf000004 of:SLOF,HEAD pSeries [ 2.054099][ T1] NIP: c000000000181d40 LR: c000000000182164 CTR: c0000000001b71e0 [ 2.054171][ T1] REGS: c0000000047632c0 TRAP: 0700 Not tainted (6.4.0-rc1-01511-g91b79de175e1) [ 2.054279][ T1] MSR: 8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 48000284 XER: 00000000 [ 2.054608][ T1] CFAR: c000000000182160 IRQMASK: 0 [ 2.054608][ T1] GPR00: c000000000182164 c000000004763560 c000000001558c00 c000000004d18600 [ 2.054608][ T1] GPR04: 0000000000000000 0000000000000000 c0000000028eccd8 0000000000000000 [ 2.054608][ T1] GPR08: 0000000000000000 0000000000080000 0000000000000000 0000000048000288 [ 2.054608][ T1] GPR12: 0000000000000000 c000000002ad0000 c000000000013788 0000000000000000 [ 2.054608][ T1] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.054608][ T1] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.054608][ T1] GPR24: 0000000000000000 c000000004d186b8 c000000004d18610 c000000004d18620 [ 2.054608][ T1] GPR28: 0000000000000000 c00000000299b310 0000000000000000 c000000004d18600 [ 2.055488][ T1] NIP [c000000000181d40] workqueue_sysfs_register+0x20/0x1f0 [ 2.055564][ T1] LR [c000000000182164] alloc_workqueue+0x254/0x584 [ 2.055858][ T1] Call Trace: [ 2.055989][ T1] [c000000004763560] [c0000000047635f0] 0xc0000000047635f0 (unreliable) [ 2.056509][ T1] [c0000000047635f0] [c0000000001823a8] alloc_workqueue+0x498/0x584 [ 2.056605][ T1] [c0000000047636a0] [c000000000ba016c] scsi_host_alloc+0x2fc/0x500 [ 2.056678][ T1] [c000000004763730] [c000000000bdf7ec] ibmvscsi_probe+0x6c/0xaf8 [ 2.056746][ T1] [c000000004763820] [c000000000105d4c] vio_bus_probe+0x9c/0x4a0 [ 2.056816][ T1] [c0000000047638e0] [c000000000b1c274] really_probe+0x104/0x410 [ 2.056885][ T1] [c000000004763970] [c000000000b1c630] __driver_probe_device+0xb0/0x1e0 [ 2.056956][ T1] [c0000000047639f0] [c000000000b1c7b4] driver_probe_device+0x54/0x130 [ 2.057025][ T1] [c000000004763a30] [c000000000b1cac8] __driver_attach+0xd8/0x200 [ 2.057092][ T1] [c000000004763a70] [c000000000b18cd4] bus_for_each_dev+0xb4/0x140 [ 2.057158][ T1] [c000000004763ad0] [c000000000b1b824] driver_attach+0x34/0x50 [ 2.057226][ T1] [c000000004763af0] [c000000000b1ac1c] bus_add_driver+0x13c/0x2d0 [ 2.057292][ T1] [c000000004763b80] [c000000000b1e3c4] driver_register+0xa4/0x1b0 [ 2.057360][ T1] [c000000004763bf0] [c000000000108054] __vio_register_driver+0x74/0x9c [ 2.057428][ T1] [c000000004763c10] [c000000002063690] ibmvscsi_module_init+0x98/0xd4 [ 2.057500][ T1] [c000000004763c40] [c0000000000131a0] do_one_initcall+0x80/0x320 [ 2.057583][ T1] [c000000004763d20] [c0000000020049b4] kernel_init_freeable+0x304/0x3ac [ 2.057657][ T1] [c000000004763df0] [c0000000000137b0] kernel_init+0x30/0x1a0 [ 2.057723][ T1] [c000000004763e50] [c00000000000debc] ret_from_kernel_user_thread+0x14/0x1c [ 2.057807][ T1] --- interrupt: 0 at 0x0 [ 2.057858][ T1] NIP: 0000000000000000 LR: 0000000000000000 CTR: 0000000000000000 [ 2.057909][ T1] REGS: c000000004763e80 TRAP: 0000 Not tainted (6.4.0-rc1-01511-g91b79de175e1) [ 2.057964][ T1] MSR: 0000000000000000 <> CR: 00000000 XER: 00000000 [ 2.058031][ T1] CFAR: 0000000000000000 IRQMASK: 0 [ 2.058031][ T1] GPR00: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR04: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR12: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058031][ T1] GPR28: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 2.058682][ T1] NIP [0000000000000000] 0x0 [ 2.058728][ T1] LR [0000000000000000] 0x0 [ 2.058782][ T1] --- interrupt: 0 [ 2.058965][ T1] Code: 60000000 60000000 60000000 60420000 3c4c013d 38426ee0 7c0802a6 60000000 fb61ffd8 f821ff71 81230100 55290318 <0b090000> 3d22fff0 7c0802a6 fb810070 [ 2.059420][ T1] ---[ end trace 0000000000000000 ]--- [ 2.065968][ T46] scsi_tmf_0 (46) used greatest stack depth: 15200 bytes left [ 2.067252][ T1] scsi host0: failed to create tmf workq [ 2.092458][ T45] scsi_eh_0 (45) used greatest stack depth: 14240 bytes left [ 2.092852][ T1] ibmvscsi 71000003: couldn't allocate host data [ 2.093005][ T1] ibmvscsi: probe of 71000003 failed with error -1 I have no idea what has caused this. -- Cheers, Stephen Rothwell
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