Hi Sebastian, On Mon, Aug 24, 2020 at 05:46:05PM +0200, Sebastian Andrzej Siewior wrote: > I'm pleased to announce the v5.9-rc2-rt1 patch set. I gave it a quick run on my test system. Can't boot the system at this point. Didn't look closer at it, maybe it's something obvious... stack segment: 0000 [#1] PREEMPT_RT SMP PTI CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.9.0-rc2-rt1 #1 Hardware name: wortmann G31M-ES2L/G31M-S2L, BIOS F10 09/29/2009 RIP: 0010:intel_pipe_update_start+0x139/0x5f0 Code: ed 7c a1 ff 48 8d 83 b8 05 00 00 48 89 c5 48 89 04 24 e8 ea 75 51 00 89 c0 48 03 2c c5 a0 26 0e a0 65 48 8b 04 25 80 6c 01 00 <48> 39 45 30 0f 84 4a 01 00 00 48 89 ef e8 35 e2 51 00 8b 35 b7 42 RSP: 0000:ffffbc3d800179c8 EFLAGS: 00010287 RAX: ffff9c91ab220000 RBX: ffff9c91aaac6800 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffffa0015367 RDI: ffffffffa003f1de RBP: ffff3923566c6db8 R08: 0000000000000000 R09: 0000000000000001 R10: ffff9c91ab292b90 R11: 00000000000000ba R12: 00000000000001e8 R13: ffff9c91a9e9cc30 R14: 00000000000001e4 R15: 00000000000001e7 FS: 0000000000000000(0000) GS:ffff9c91abc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000ac41a000 CR4: 00000000000406f0 Call Trace: ? preempt_count_add+0x68/0xa0 ? _raw_spin_lock+0x13/0x30 ? wait_woken+0x90/0x90 intel_update_crtc+0xa7/0x360 ? wait_woken+0x90/0x90 intel_commit_modeset_enables+0x5e/0x80 intel_atomic_commit_tail+0x311/0x1210 ? __queue_work+0x372/0x540 ? migrate_enable+0x11b/0x430 intel_atomic_commit+0x357/0x3e0 intel_modeset_init+0x84d/0x1e50 i915_driver_probe+0x95d/0xe00 i915_pci_probe+0x44/0x120 local_pci_probe+0x26/0x50 pci_device_probe+0xd5/0x160 really_probe+0xdb/0x2e0 device_driver_attach+0x53/0x60 __driver_attach+0x4c/0xc0 ? device_driver_attach+0x60/0x60 bus_for_each_dev+0x7b/0xc0 bus_add_driver+0x17a/0x1c0 driver_register+0x6c/0xc0 ? mipi_dsi_bus_init+0x11/0x11 i915_init+0x58/0x6b do_one_initcall+0x46/0x274 kernel_init_freeable+0x199/0x1dc ? rest_init+0xba/0xba kernel_init+0xa/0x106 ret_from_fork+0x22/0x30 Modules linked in: Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b Kernel Offset: 0x1de00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]--- Thanks, Daniel