Description of problem: Latest Rawhide snapshot ( as of today): [ 2.962772] ------------[ cut here ]------------ [ 2.963764] WARNING: CPU: 1 PID: 6 at lib/dma-debug.c:1140 check_unmap+0x4ee/0x9e0() [ 2.965382] vmw_pvscsi 0000:03:00.0: DMA-API: device driver failed to check map error[device address=0x0000000078520f80] [size=96 bytes] [mapped as single] [ 2.968214] Modules linked in: [ 2.968897] vmwgfx(+) ttm drm ata_generic vmw_pvscsi(+) i2c_core pata_acpi [ 2.970302] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 3.14.0-0.rc6.git4.1.fc21.x86_64 #1 [ 2.972028] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/30/2013 [ 2.974230] Workqueue: events_unbound async_run_entry_fn [ 2.975375] 0000000000000000 000000003e328dbc ffff88007fc03bf0 ffffffff817d19a8 [ 2.977032] ffff88007fc03c38 ffff88007fc03c28 ffffffff8109671d ffff88007bf63540 [ 2.978694] ffff88007bc52e50 ffffffff82d74a90 0000000000000082 ffffffff81a2cce8 [ 2.980352] Call Trace: [ 2.980882] <IRQ> [<ffffffff817d19a8>] dump_stack+0x4d/0x66 [ 2.982147] [<ffffffff8109671d>] warn_slowpath_common+0x7d/0xa0 [ 2.983398] [<ffffffff8109679c>] warn_slowpath_fmt+0x5c/0x80 [ 2.984606] [<ffffffff813f5bfe>] check_unmap+0x4ee/0x9e0 [ 2.985731] [<ffffffff813f6160>] debug_dma_unmap_page+0x70/0x90 [ 2.986981] [<ffffffffa00196e3>] pvscsi_unmap_buffers.isra.12+0x123/0x200 [vmw_pvscsi] [ 2.988635] [<ffffffffa00198c6>] pvscsi_process_completion_ring+0x106/0x2f0 [vmw_pvscsi] [ 2.990325] [<ffffffffa0019b64>] pvscsi_isr+0x34/0xa0 [vmw_pvscsi] [ 2.991631] [<ffffffff8110e26e>] handle_irq_event_percpu+0x3e/0x370 [ 2.992952] [<ffffffff8110e5dd>] handle_irq_event+0x3d/0x60 [ 2.994129] [<ffffffff811112c7>] handle_edge_irq+0x77/0x130 [ 2.995320] [<ffffffff8101dd6f>] handle_irq+0xbf/0x150 [ 2.996413] [<ffffffff8109da62>] ? irq_enter+0x42/0x90 [ 2.997514] [<ffffffff817e7b0f>] do_IRQ+0x4f/0xf0 [ 2.998521] [<ffffffff817db8f2>] common_interrupt+0x72/0x72 [ 2.999703] <EOI> [<ffffffff817dabab>] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 3.001587] [<ffffffffa001a7c0>] pvscsi_queue+0x130/0x840 [vmw_pvscsi] [ 3.002970] [<ffffffff8151cbe0>] ? ftrace_raw_event_scsi_dispatch_cmd_error+0x220/0x220 [ 3.004681] [<ffffffff8151d2f7>] scsi_dispatch_cmd+0xb7/0x4e0 [ 3.006095] [<ffffffff8152575c>] scsi_request_fn+0x33c/0x540 [ 3.007299] [<ffffffff81396003>] __blk_run_queue+0x33/0x40 [ 3.008464] [<ffffffff813a0799>] blk_execute_rq_nowait+0xa9/0x140 [ 3.009751] [<ffffffff813a0993>] blk_execute_rq+0x133/0x1e0 [ 3.010954] [<ffffffff81272639>] ? bio_phys_segments+0x19/0x20 [ 3.012195] [<ffffffff8139bbb2>] ? blk_rq_bio_prep+0x72/0xf0 [ 3.013393] [<ffffffff81524207>] scsi_execute+0xd7/0x160 [ 3.014523] [<ffffffff81525a4c>] scsi_execute_req_flags+0x8c/0x100 [ 3.015833] [<ffffffff81527f95>] scsi_probe_and_add_lun+0x235/0xc50 [ 3.016887] [drm] DMA map mode: Using physical TTM page addresses. [ 3.016960] [drm] Capabilities: [ 3.016960] [drm] Rect copy. [ 3.016961] [drm] Cursor. [ 3.016961] [drm] Cursor bypass. [ 3.016961] [drm] Cursor bypass 2. [ 3.016962] [drm] 8bit emulation. [ 3.016962] [drm] Alpha cursor. [ 3.016962] [drm] Extended Fifo. [ 3.016963] [drm] Multimon. [ 3.016963] [drm] Pitchlock. [ 3.016963] [drm] Irq mask. [ 3.016964] [drm] Display Topology. [ 3.016964] [drm] GMR. [ 3.016965] [drm] Traces. [ 3.016965] [drm] GMR2. [ 3.016965] [drm] Screen Object 2. [ 3.016966] [drm] Max GMR ids is 64 [ 3.016967] [drm] Max number of GMR pages is 65536 [ 3.016967] [drm] Max dedicated hypervisor surface memory is 163840 kiB [ 3.016968] [drm] Maximum display memory size is 4096 kiB [ 3.016969] [drm] VRAM at 0xec000000 size is 4096 kiB [ 3.016969] [drm] MMIO at 0xfe000000 size is 256 kiB [ 3.017038] [drm] global init. [ 3.036404] [<ffffffff8150943c>] ? __pm_runtime_resume+0x5c/0x90 [ 3.037679] [<ffffffff81528e70>] __scsi_scan_target+0x110/0x6d0 [ 3.038936] [<ffffffff817daba6>] ? _raw_spin_unlock_irqrestore+0x36/0x70 [ 3.040345] [<ffffffff810f8b45>] ? trace_hardirqs_on_caller+0x105/0x1d0 [ 3.041741] [<ffffffff810f8c1d>] ? trace_hardirqs_on+0xd/0x10 [ 3.042957] [<ffffffff815295a6>] scsi_scan_channel.part.6+0x66/0x90 [ 3.044288] [<ffffffff81529769>] scsi_scan_host_selected+0xf9/0x1c0 [ 3.045773] [<ffffffff815298c1>] do_scsi_scan_host+0x91/0xa0 [ 3.046977] [<ffffffff81529a9c>] do_scan_async+0x1c/0x160 [ 3.048125] [<ffffffff810cc629>] async_run_entry_fn+0x39/0x120 [ 3.049358] [<ffffffff810bba30>] process_one_work+0x220/0x6f0 [ 3.050572] [<ffffffff810bb9c4>] ? process_one_work+0x1b4/0x6f0 [ 3.051822] [<ffffffff810bc01b>] worker_thread+0x11b/0x3a0 [ 3.052987] [<ffffffff810bbf00>] ? process_one_work+0x6f0/0x6f0 [ 3.054239] [<ffffffff810c43bf>] kthread+0xff/0x120 [ 3.055285] [<ffffffff810c42c0>] ? insert_kthread_work+0x80/0x80 [ 3.056558] [<ffffffff817e577c>] ret_from_fork+0x7c/0xb0 [ 3.057686] [<ffffffff810c42c0>] ? insert_kthread_work+0x80/0x80 [ 3.058954] ---[ end trace df8f36ebf71b314f ]--- [ 3.059922] Mapped at: [ 3.060431] [<ffffffff813f4821>] debug_dma_map_page+0x91/0x140 [ 3.061699] [<ffffffffa001a911>] pvscsi_queue+0x281/0x840 [vmw_pvscsi] [ 3.063105] [<ffffffff8151d2f7>] scsi_dispatch_cmd+0xb7/0x4e0 [ 3.064351] [<ffffffff8152575c>] scsi_request_fn+0x33c/0x540 [ 3.065607] [<ffffffff81396003>] __blk_run_queue+0x33/0x40 [ 3.067427] scsi 2:0:0:0: Direct-Access VMware Virtual disk 1.0 PQ: 0 ANSI: 2 Version-Release number of selected component (if applicable): kernel-3.14.0-0.rc6.git4.1.fc21.x86_64 Looks similar (or duplicate) to bug #926917 but I can't reliably tell if this is the same issue.
*** This bug has been marked as a duplicate of bug 926917 ***