I've been seeing radeon related crashes upon boot on my laptop for a while now, but I could just recently capture this Oops, which can be related. If the machine hard-locks on boot, I can capture no messages. It looks, that most of the time it can regenerate from that state somehow and continues on without any problems. There was a kernel version months before, for which boot resulted in a hard-lock each time. It happens once in every couple of startups only.
It's a null pointer dereference. Where should I report that? BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffffc01968d3>] evergreen_bandwidth_update+0x63/0x120 [radeon] PGD 0 Oops: 0000 [#1] SMP DEBUG_PAGEALLOC Modules linked in: x86_pkg_temp_thermal coretemp microcode xhci_pci xhci_hcd radeon(+) cfbfillrect cfbimgblt cfbcopyarea drm_kms_helper ttm ehci_pci ehci_ CPU: 1 PID: 1730 Comm: laptop_mode Not tainted 4.1.7-hardened-r1 #1 Hardware name: Hewlett-Packard HP EliteBook 8560w/1631, BIOS 68SVD Ver. F.50 08/04/2014 task: ffff88023247e150 ti: ffff88023247ed78 task.ti: ffff88023247ed78 RIP: 0010:[<ffffffffc01968d3>] [<ffffffffc01968d3>] evergreen_bandwidth_update+0x63/0x120 [radeon] RSP: 0018:ffffc900062e3cc8 EFLAGS: 00010287 RAX: ffff8800017e04c8 RBX: ffff8800017e0000 RCX: ffff8800017e04e0 RDX: 0000000000000000 RSI: ffffffffc0196870 RDI: ffff8800017e0000 RBP: ffff8800017e1b78 R08: ffff880230c6be92 R09: 000000000000044c R10: ffff8800017e1e90 R11: 0000000000006cf0 R12: 0000000000000000 R13: 8000000000000000 R14: ffff8800017e1ba0 R15: ffff8800017e14b0 FS: 000003693c4f3700(0000) GS:ffff88023cc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000090 CR3: 0000000012e52000 CR4: 00000000000606f0 Stack: ffff8800017e1b78 ffff8800017e0000 ffff8800017e1b78 0000000000000001 8000000000000000 ffff8800017e1ba0 ffff8800017e14b0 ffffffffc018d9f9 ffff8800017e1b78 ffff8800017e0000 ffff8800017e1b78 000000000000000c Call Trace: [<ffffffffc018d9f9>] ? radeon_pm_compute_clocks+0x6e9/0x950 [radeon] [<ffffffffc018e28b>] ? radeon_set_dpm_state+0x7b/0x140 [radeon] [<ffffffff9227f442>] ? kernfs_fop_write+0x142/0x490 [<ffffffff921f3bf3>] ? __vfs_write+0x53/0x150 [<ffffffff921f792d>] ? __sb_start_write+0x4d/0x120 [<ffffffff921f4644>] ? vfs_write+0xf4/0x2a0 [<ffffffff921f5936>] ? SyS_write+0x56/0xd0 [<ffffffff92e3c959>] ? system_call_fastpath+0x12/0x83 Code: 8b 93 f0 24 00 00 85 d2 7e d8 48 8d 83 b0 04 00 00 83 ea 01 45 31 e4 48 8d 8c d3 b8 04 00 00 66 0f 1f 84 00 00 00 00 00 48 8b 10 <80> ba 90 00 00 00 01 41 83 dc ff 48 83 c0 08 48 39 c8 75 e9 48 RIP [<ffffffffc01968d3>] evergreen_bandwidth_update+0x63/0x120 [radeon] RSP <ffffc900062e3cc8> CR2: 0000000000000090 ---[ end trace 672b1aaacf0d608d ]--- I'm still having early-boot intel-iommu traces on my other machine, but without any symptoms. Might be related to a 3ware card, fully functioning, housing the system - therefore I cannot verify... ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at drivers/iommu/intel-iommu.c:3214 intel_unmap+0x146/0x200() Driver unmaps unmatched page at PFN 0 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.7-hardened-r1 #1 Hardware name: System manufacturer System Product Name/Z8P(N)E-D12(X), BIOS 1302 06/25/2012 0000000000000000 0bf0f1830deb9167 ffffffffa61a1f87 0000000000000000 ffffffffa61a1f87 ffffffff9fe5d48d ffff880237c03d80 ffffffff9f0a96e7 ffffffffa61a1f87 0000000000000c8e ffffffffa61e1500 ffff880433ceb368 Call Trace: <IRQ> [<ffffffff9fe5d48d>] ? dump_stack+0x40/0x56 [<ffffffff9f0a96e7>] ? warn_slowpath_common+0x77/0xb0 [<ffffffff9f0a978c>] ? warn_slowpath_fmt+0x6c/0x90 [<ffffffff9f6aa8e6>] ? intel_unmap+0x146/0x200 [<ffffffff9f77d78e>] ? twa_interrupt+0x48e/0x780 [<ffffffff9f0f9de3>] ? handle_irq_event_percpu+0x73/0x120 [<ffffffff9f0f9ec0>] ? handle_irq_event+0x30/0x50 [<ffffffff9f0fcfd8>] ? handle_fasteoi_irq+0x88/0x180 [<ffffffff9f005385>] ? handle_irq+0x85/0x160 [<ffffffff9f0ce264>] ? atomic_notifier_call_chain+0x24/0x30 [<ffffffff9f004c01>] ? do_IRQ+0x41/0xf0 [<ffffffff9fe69397>] ? common_interrupt+0x97/0x97 <EOI> [<ffffffff9f9db147>] ? cpuidle_enter_state+0xb7/0x160 [<ffffffff9f0eed5b>] ? cpu_startup_entry+0x27b/0x300 [<ffffffffaac1507a>] ? start_kernel+0x4a9/0x4ca [<ffffffffaac14120>] ? early_idt_handler_array+0x120/0x120 [<ffffffffaac145f7>] ? x86_64_start_kernel+0x10b/0x12f ---[ end trace 366301a14398ecf4 ]--- Thanks: Dw. -- dr Tóth Attila, Radiológus, 06-20-825-8057 Attila Toth MD, Radiologist, +36-20-825-8057
