From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752483AbeESOql (ORCPT ); Sat, 19 May 2018 10:46:41 -0400 Received: from mga01.intel.com ([192.55.52.88]:53001 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752334AbeESOqj (ORCPT ); Sat, 19 May 2018 10:46:39 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,419,1520924400"; d="scan'208";a="40630885" Date: Sat, 19 May 2018 17:46:32 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= To: Joonsoo Kim Cc: Laura Abbott , Michal Hocko , "Aneesh Kumar K . V" , Tony Lindgren , Vlastimil Babka , Johannes Weiner , Laura Abbott , Marek Szyprowski , Mel Gorman , Michal Nazarewicz , Minchan Kim , Rik van Riel , Russell King , Will Deacon , Andrew Morton , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Revert "mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE" Message-ID: <20180519144632.GE23723@intel.com> References: <20180517125959.8095-1-ville.syrjala@linux.intel.com> <20180517132109.GU12670@dhcp22.suse.cz> <20180517133629.GH23723@intel.com> <20180517135832.GI23723@intel.com> <20180517164947.GV12670@dhcp22.suse.cz> <20180517170816.GW12670@dhcp22.suse.cz> <20180518040104.GA17433@js1304-desktop> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20180518040104.GA17433@js1304-desktop> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 18, 2018 at 01:01:04PM +0900, Joonsoo Kim wrote: > On Thu, May 17, 2018 at 10:53:32AM -0700, Laura Abbott wrote: > > On 05/17/2018 10:08 AM, Michal Hocko wrote: > > >On Thu 17-05-18 18:49:47, Michal Hocko wrote: > > >>On Thu 17-05-18 16:58:32, Ville Syrjälä wrote: > > >>>On Thu, May 17, 2018 at 04:36:29PM +0300, Ville Syrjälä wrote: > > >>>>On Thu, May 17, 2018 at 03:21:09PM +0200, Michal Hocko wrote: > > >>>>>On Thu 17-05-18 15:59:59, Ville Syrjala wrote: > > >>>>>>From: Ville Syrjälä > > >>>>>> > > >>>>>>This reverts commit bad8c6c0b1144694ecb0bc5629ede9b8b578b86e. > > >>>>>> > > >>>>>>Make x86 with HIGHMEM=y and CMA=y boot again. > > >>>>> > > >>>>>Is there any bug report with some more details? It is much more > > >>>>>preferable to fix the issue rather than to revert the whole thing > > >>>>>right away. > > >>>> > > >>>>The machine I have in front of me right now didn't give me anything. > > >>>>Black screen, and netconsole was silent. No serial port on this > > >>>>machine unfortunately. > > >>> > > >>>Booted on another machine with serial: > > >> > > >>Could you provide your .config please? > > >> > > >>[...] > > >>>[ 0.000000] cma: Reserved 4 MiB at 0x0000000037000000 > > >>[...] > > >>>[ 0.000000] BUG: Bad page state in process swapper pfn:377fe > > >>>[ 0.000000] page:f53effc0 count:0 mapcount:-127 mapping:00000000 index:0x0 > > >> > > >>OK, so this looks the be the source of the problem. -128 would be a > > >>buddy page but I do not see anything that would set the counter to -127 > > >>and the real map count updates shouldn't really happen that early. > > >> > > >>Maybe CONFIG_DEBUG_VM and CONFIG_DEBUG_HIGHMEM will tell us more. > > > > > >Looking closer, I _think_ that the bug is in set_highmem_pages_init->is_highmem > > >and zone_movable_is_highmem might force CMA pages in the zone movable to > > >be initialized as highmem. And that sounds supicious to me. Joonsoo? > > > > > > > For a point of reference, arm with this configuration doesn't hit this bug > > because highmem pages are freed via the memblock interface only instead > > of iterating through each zone. It looks like the x86 highmem code > > assumes only a single highmem zone and/or it's disjoint? > > Good point! Reason of the crash is that the span of MOVABLE_ZONE is > extended to whole node span for future CMA initialization, and, > normal memory is wrongly freed here. > > Here goes the fix. Ville, Could you test below patch? > I re-generated the issue on my side and this patch fixed it. This gets me past the initial hurdles. But when I tried it on a machine with an actual 32 bit OS it oopsed again later in the boot. [ 0.000000] Linux version 4.17.0-rc5-mgm+ () (gcc version 6.4.0 (Gentoo 6.4.0-r1 p1.3)) #57 PREEMPT Sat May 19 17:25:27 EEST 2018 [ 0.000000] x86/fpu: x87 FPU will use FXSAVE [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009f7ff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009f800-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000ce000-0x00000000000cffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000dc000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007f6effff] usable [ 0.000000] BIOS-e820: [mem 0x000000007f6f0000-0x000000007f6f7fff] ACPI data [ 0.000000] BIOS-e820: [mem 0x000000007f6f8000-0x000000007f6fffff] ACPI NVS [ 0.000000] BIOS-e820: [mem 0x000000007f700000-0x000000007fffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fec10000-0x00000000fec1ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000ffb00000-0x00000000ffbfffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fff00000-0x00000000ffffffff] reserved [ 0.000000] Notice: NX (Execute Disable) protection missing in CPU! [ 0.000000] SMBIOS 2.3 present. [ 0.000000] DMI: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 0.000000] e820: last_pfn = 0x7f6f0 max_arch_pfn = 0x100000 [ 0.000000] x86/PAT: PAT not supported by CPU. [ 0.000000] x86/PAT: Configuration [0-7]: WB WT UC- UC WB WT UC- UC [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] log_buf_len: 2097152 bytes [ 0.000000] early log buf free: 259584(99%) [ 0.000000] RAMDISK: [mem 0x37e58000-0x37feffff] [ 0.000000] Allocated new RAMDISK: [mem 0x37466000-0x375fd7ff] [ 0.000000] Move RAMDISK from [mem 0x37e58000-0x37fef7ff] to [mem 0x37466000-0x375fd7ff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F5970 000014 (v00 FUJ ) [ 0.000000] ACPI: RSDT 0x000000007F6F1D5C 000034 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] ACPI: FACP 0x000000007F6F78E0 000074 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] ACPI: DSDT 0x000000007F6F1D90 005B50 (v01 FUJ FJNB16C 01260000 MSFT 0100000E) [ 0.000000] ACPI: FACS 0x000000007F6F8FC0 000040 [ 0.000000] ACPI: SSDT 0x000000007F6F7954 000288 (v01 FUJ FJNB16C 01260000 INTL 20030228) [ 0.000000] ACPI: SSDT 0x000000007F6F7D68 000270 (v01 FUJ FJNB16C 01260000 MSFT 0100000E) [ 0.000000] ACPI: BOOT 0x000000007F6F7FD8 000028 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] 1150MB HIGHMEM available. [ 0.000000] 887MB LOWMEM available. [ 0.000000] mapped low ram: 0 - 377fe000 [ 0.000000] low ram: 0 - 377fe000 [ 0.000000] cma: Reserved 4 MiB at 0x37000000 [ 0.000000] tsc: Fast TSC calibration using PIT [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] Normal [mem 0x0000000001000000-0x00000000377fdfff] [ 0.000000] HighMem [mem 0x00000000377fe000-0x000000007f6effff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.000000] node 0: [mem 0x0000000000100000-0x000000007f6effff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007f6effff] [ 0.000000] Reserved but unavailable: 98 pages [ 0.000000] Using APIC driver default [ 0.000000] Reserving Intel graphics memory at [mem 0x7f700000-0x7fefffff] [ 0.000000] ACPI: PM-Timer IO Port: 0xfc08 [ 0.000000] Local APIC disabled by BIOS -- reenabling. [ 0.000000] Found and enabled local APIC! [ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000cdfff] [ 0.000000] PM: Registered nosave memory: [mem 0x000ce000-0x000cffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000d0000-0x000dbfff] [ 0.000000] PM: Registered nosave memory: [mem 0x000dc000-0x000fffff] [ 0.000000] e820: [mem 0x80000000-0xfec0ffff] available for PCI devices [ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370452778343963 ns [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 520094 [ 0.000000] Kernel command line: root=/dev/sda3 resume=/dev/sda2 lapic modprobe.blacklist=i915 drm.debug=0xe log_buf_len=2M console=ttyS0,115200 [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] microcode: microcode updated early to revision 0x7, date = 2004-11-09 [ 0.000000] Initializing CPU#0 [ 0.000000] Initializing HighMem for node 0 (000377fe:0007f6f0) [ 0.000000] Memory: 2039028K/2087480K available (5733K kernel code, 627K rwdata, 2064K rodata, 640K init, 14252K bss, 44356K reserved, 4096K cma-reserved, 1178568K highmem) [ 0.000000] virtual kernel memory layout: [ 0.000000] fixmap : 0xfff8f000 - 0xfffff000 ( 448 kB) [ 0.000000] cpu_entry : 0xffc00000 - 0xffc28000 ( 160 kB) [ 0.000000] pkmap : 0xff800000 - 0xffc00000 (4096 kB) [ 0.000000] vmalloc : 0xf7ffe000 - 0xff7fe000 ( 120 MB) [ 0.000000] lowmem : 0xc0000000 - 0xf77fe000 ( 887 MB) [ 0.000000] .init : 0xc184f000 - 0xc18ef000 ( 640 kB) [ 0.000000] .data : 0xc1599460 - 0xc183ee40 (2710 kB) [ 0.000000] .text : 0xc1000000 - 0xc1599460 (5733 kB) [ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok. [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] ftrace: allocating 22084 entries in 44 pages [ 0.000000] Running RCU self tests [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] RCU lockdep checking is enabled. [ 0.000000] Tasks RCU enabled. [ 0.000000] kmemleak: Kernel memory leak detector disabled [ 0.000000] NR_IRQS: 2304, nr_irqs: 24, preallocated irqs: 16 [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 131072 [ 0.000000] ... CHAINHASH_SIZE: 65536 [ 0.000000] memory used by lock dependency info: 5935 kB [ 0.000000] per task-struct memory footprint: 1344 bytes [ 0.000000] kmemleak: Early log buffer exceeded (785), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE [ 0.000000] ACPI: Core revision 20180313 [ 0.000000] ACPI: setting ELCR to 0200 (from 0800) [ 0.003333] APIC: ACPI MADT or MP tables are not detected [ 0.006666] APIC: Switch to virtual wire mode setup with no configuration [ 0.009999] Enabling APIC mode: Flat. Using 0 I/O APICs [ 0.013333] tsc: Fast TSC calibration using PIT [ 0.016666] tsc: Detected 1599.815 MHz processor [ 0.019999] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x170f7614032, max_idle_ns: 440795204679 ns [ 0.023355] Calibrating delay loop (skipped), value calculated using timer frequency.. 3200.94 BogoMIPS (lpj=5332716) [ 0.026674] pid_max: default: 32768 minimum: 301 [ 0.030120] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.033348] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.037411] mce: CPU supports 5 MCE banks [ 0.040032] CPU0: Thermal monitoring enabled (TM2) [ 0.043354] Last level iTLB entries: 4KB 128, 2MB 0, 4MB 2 [ 0.046674] Last level dTLB entries: 4KB 128, 2MB 0, 4MB 8, 1GB 0 [ 0.050006] CPU: Intel(R) Pentium(R) M processor 1600MHz (family: 0x6, model: 0x9, stepping: 0x5) [ 0.053342] Spectre V2 : Vulnerable: Minimal generic ASM retpoline [ 0.056673] Spectre V2 : Spectre v2 mitigation: Filling RSB on context switch [ 0.064166] Performance Events: p6 PMU driver. [ 0.066686] ... version: 0 [ 0.070017] ... bit width: 32 [ 0.073346] ... generic registers: 2 [ 0.076674] ... value mask: 00000000ffffffff [ 0.080007] ... max period: 000000007fffffff [ 0.083340] ... fixed-purpose events: 0 [ 0.086673] ... event mask: 0000000000000003 [ 0.090172] Hierarchical SRCU implementation. [ 0.094612] WARNING: CPU: 0 PID: 1 at ../kernel/kthread.c:505 kthread_park+0x70/0x80 [ 0.096666] Modules linked in: [ 0.096666] CPU: 0 PID: 1 Comm: swapper Not tainted 4.17.0-rc5-mgm+ #57 [ 0.096666] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 0.096666] EIP: kthread_park+0x70/0x80 [ 0.096666] EFLAGS: 00210202 CPU: 0 [ 0.096666] EAX: f58fab80 EBX: f58b4680 ECX: 00000000 EDX: 00000005 [ 0.096666] ESI: c183b5c8 EDI: 00000000 EBP: f58d5f58 ESP: f58d5f54 [ 0.096666] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.096666] CR0: 80050033 CR2: ffd8f000 CR3: 018f2000 CR4: 000006d0 [ 0.096666] Call Trace: [ 0.096666] smpboot_update_cpumask_percpu_thread+0x55/0x70 [ 0.096666] softlockup_update_smpboot_threads+0x2f/0x50 [ 0.096666] lockup_detector_reconfigure+0x1a/0x80 [ 0.096666] lockup_detector_init+0x62/0x6e [ 0.096666] kernel_init_freeable+0xe6/0x31b [ 0.096666] ? rest_init+0x1f0/0x1f0 [ 0.096666] kernel_init+0x10/0x110 [ 0.096666] ? schedule_tail_wrapper+0x9/0xc [ 0.096666] ret_from_fork+0x2e/0x38 [ 0.096666] Code: 8d 76 00 5b 31 c0 5d c3 8d 76 00 0f 0b f6 c2 04 8b 98 38 03 00 00 74 c2 0f 0b 5b b8 da ff ff ff 5d c3 89 f6 8d bc 27 00 00 00 00 <0f> 0b b8 f0 ff ff ff eb c9 8d b4 26 00 00 00 00 3e 8d 74 26 00 [ 0.096666] irq event stamp: 810 [ 0.096666] hardirqs last enabled at (809): [] _raw_spin_unlock_irq+0x27/0x50 [ 0.096666] hardirqs last disabled at (810): [] common_exception+0x61/0x82 [ 0.096666] softirqs last enabled at (286): [] __do_softirq+0x389/0x425 [ 0.096666] softirqs last disabled at (279): [] call_on_stack+0x4c/0x60 [ 0.096666] WARNING: CPU: 0 PID: 1 at ../kernel/kthread.c:505 kthread_park+0x70/0x80 [ 0.096666] random: get_random_bytes called from print_oops_end_marker+0x57/0x70 with crng_init=0 [ 0.096666] ---[ end trace 37f4adc02e5109c7 ]--- [ 0.099999] NMI watchdog: Enabled. Permanently consumes one hw-PMU counter. [ 0.100411] devtmpfs: initialized [ 0.103996] Built 1 zonelists, mobility grouping on. Total pages: 510781 [ 0.106943] PM: Registering ACPI NVS region [mem 0x7f6f8000-0x7f6fffff] (32768 bytes) [ 0.113811] kworker/u2:0 (15) used greatest stack depth: 6708 bytes left [ 0.116909] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370867519511994 ns [ 0.120040] futex hash table entries: 256 (order: 1, 11264 bytes) [ 0.126944] RTC time: 14:32:23, date: 05/19/18 [ 0.130504] NET: Registered protocol family 16 [ 0.136973] audit: initializing netlink subsys (disabled) [ 0.140948] cpuidle: using governor ladder [ 0.143370] audit: type=2000 audit(1526740342.139:1): state=initialized audit_enabled=0 res=1 [ 0.146993] cpuidle: using governor menu [ 0.150336] Simple Boot Flag at 0x7f set to 0x1 [ 0.153453] ACPI: bus type PCI registered [ 0.156767] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.166545] PCI: PCI BIOS revision 2.10 entry at 0xfd9b2, last bus=3 [ 0.166689] PCI: Using configuration type 1 for base access [ 0.177531] kworker/u2:1 (50) used greatest stack depth: 6428 bytes left [ 0.200361] HugeTLB registered 4.00 MiB page size, pre-allocated 0 pages [ 0.204690] ACPI: Added _OSI(Module Device) [ 0.206788] ACPI: Added _OSI(Processor Device) [ 0.210189] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.213366] ACPI: Added _OSI(Processor Aggregator Device) [ 0.216692] ACPI: Added _OSI(Linux-Dell-Video) [ 0.236095] ACPI: 3 ACPI AML tables successfully acquired and loaded [ 0.253568] ACPI: Interpreter enabled [ 0.256768] ACPI: (supports S0 S3 S4 S5) [ 0.260020] ACPI: Using PIC for interrupt routing [ 0.263464] PCI: Ignoring host bridge windows from ACPI; if necessary, use "pci=use_crs" and report a bug [ 0.267543] ACPI: Enabled 5 GPEs in block 00 to 1F [ 0.299274] acpi LNXIOBAY:00: ACPI dock station (docks/bays count: 1) [ 0.312078] acpi PNP0C15:00: ACPI dock station (docks/bays count: 2) [ 0.318281] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.320131] acpi PNP0A03:00: _OSC: OS supports [Segments] [ 0.326797] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.330075] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.336967] PCI host bridge to bus 0000:00 [ 0.340080] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 0.343361] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffff] [ 0.346701] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.358256] pci 0000:00:1f.0: quirk: [io 0xfc00-0xfc7f] claimed by ICH4 ACPI/GPIO/TCO [ 0.360189] pci 0000:00:1f.0: quirk: [io 0xfc80-0xfcbf] claimed by ICH4 GPIO [ 0.363884] pci 0000:00:1f.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.366796] pci 0000:00:1f.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.370028] pci 0000:00:1f.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.373360] pci 0000:00:1f.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.382127] pci 0000:00:1e.0: PCI bridge to [bus 01-03] (subtractive decode) [ 0.384025] pci 0000:00:1e.0: bridge has subordinate 03 but max busn 06 [ 0.393971] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 10 *11) [ 0.397013] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 9 10 *11) [ 0.400280] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 9 10 *11) [ 0.403652] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 9 10 *11) [ 0.406944] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 7 9 10 *11) [ 0.413586] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 9 10 *11) [ 0.420136] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 7 9 10 11) *0, disabled. [ 0.423589] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 7 9 10 *11) [ 0.430878] pci 0000:00:02.0: vgaarb: setting as boot VGA device [ 0.433333] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 0.433434] pci 0000:00:02.0: vgaarb: bridge control possible [ 0.436693] vgaarb: loaded [ 0.440528] SCSI subsystem initialized [ 0.443978] PCI: Using ACPI for IRQ routing [ 0.454474] clocksource: Switched to clocksource tsc-early [ 0.506079] pnp: PnP ACPI init [ 0.510137] system 00:00: [io 0x04d0-0x04d1] has been reserved [ 0.516193] system 00:00: [io 0xf800-0xf87f] has been reserved [ 0.522136] system 00:00: [io 0xf880-0xf8ff] has been reserved [ 0.528084] system 00:00: [io 0xfd00-0xfd6f] has been reserved [ 0.534027] system 00:00: [io 0xfe00-0xfe01] has been reserved [ 0.539965] system 00:00: [io 0xfc00-0xfc7f] has been reserved [ 0.545900] system 00:00: [io 0xfc80-0xfcbf] has been reserved [ 0.551821] system 00:00: [mem 0x000ccc00-0x000cffff] could not be reserved [ 0.558827] system 00:00: [mem 0xffb00000-0xffbfffff] has been reserved [ 0.565440] system 00:00: [mem 0xfec10000-0xfec1ffff] has been reserved [ 0.578887] pnp: PnP ACPI: found 7 devices [ 0.635088] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 0.644046] pci 0000:00:1e.0: BAR 9: assigned [mem 0x80000000-0x8fffffff pref] [ 0.651268] pci 0000:00:1f.1: BAR 5: assigned [mem 0x90000000-0x900003ff] [ 0.658079] pci 0000:01:0a.0: BAR 0: assigned [mem 0x94000000-0x94000fff] [ 0.664867] pci 0000:01:0a.0: BAR 9: assigned [mem 0x80000000-0x83ffffff pref] [ 0.672087] pci 0000:01:0a.0: BAR 10: assigned [mem 0x98000000-0x9bffffff] [ 0.678960] pci 0000:01:0a.1: BAR 0: assigned [mem 0x9c000000-0x9c000fff] [ 0.685747] pci 0000:01:0a.1: BAR 9: assigned [mem 0x84000000-0x87ffffff pref] [ 0.692966] pci 0000:01:0a.1: BAR 10: assigned [mem 0xa0000000-0xa3ffffff] [ 0.699837] pci 0000:01:0a.0: BAR 7: assigned [io 0x3400-0x34ff] [ 0.705927] pci 0000:01:0a.0: BAR 8: assigned [io 0x3800-0x38ff] [ 0.712018] pci 0000:01:0a.1: BAR 7: assigned [io 0x3c00-0x3cff] [ 0.718110] pci 0000:01:0a.1: BAR 8: assigned [io 0x1000-0x10ff] [ 0.724208] pci 0000:01:0a.0: CardBus bridge to [bus 02] [ 0.729517] pci 0000:01:0a.0: bridge window [io 0x3400-0x34ff] [ 0.735609] pci 0000:01:0a.0: bridge window [io 0x3800-0x38ff] [ 0.741700] pci 0000:01:0a.0: bridge window [mem 0x80000000-0x83ffffff pref] [ 0.748919] pci 0000:01:0a.0: bridge window [mem 0x98000000-0x9bffffff] [ 0.755705] pci 0000:01:0a.1: CardBus bridge to [bus 03] [ 0.761013] pci 0000:01:0a.1: bridge window [io 0x3c00-0x3cff] [ 0.767103] pci 0000:01:0a.1: bridge window [io 0x1000-0x10ff] [ 0.773195] pci 0000:01:0a.1: bridge window [mem 0x84000000-0x87ffffff pref] [ 0.780414] pci 0000:01:0a.1: bridge window [mem 0xa0000000-0xa3ffffff] [ 0.787200] pci 0000:00:1e.0: PCI bridge to [bus 01-03] [ 0.792424] pci 0000:00:1e.0: bridge window [io 0x3000-0x3fff] [ 0.798518] pci 0000:00:1e.0: bridge window [mem 0xd0200000-0xd02fffff] [ 0.805304] pci 0000:00:1e.0: bridge window [mem 0x80000000-0x8fffffff pref] [ 0.813017] NET: Registered protocol family 2 [ 0.817943] tcp_listen_portaddr_hash hash table entries: 512 (order: 2, 20480 bytes) [ 0.825772] TCP established hash table entries: 8192 (order: 3, 32768 bytes) [ 0.832888] TCP bind hash table entries: 8192 (order: 6, 294912 bytes) [ 0.840507] TCP: Hash tables configured (established 8192 bind 8192) [ 0.846996] UDP hash table entries: 512 (order: 3, 40960 bytes) [ 0.853062] UDP-Lite hash table entries: 512 (order: 3, 40960 bytes) [ 0.859688] NET: Registered protocol family 1 [ 0.864101] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 0.872882] PCI Interrupt Link [LNKA] enabled at IRQ 11 [ 0.878545] PCI Interrupt Link [LNKD] enabled at IRQ 11 [ 0.884180] PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 0.889816] PCI Interrupt Link [LNKH] enabled at IRQ 11 [ 0.895590] Unpacking initramfs... [ 0.905875] Freeing initrd memory: 1632K [ 0.959992] DMA-API: preallocated 65536 debug entries [ 0.965077] DMA-API: debugging enabled by kernel config [ 0.971831] Scanning for low memory corruption every 60 seconds [ 0.980868] Initialise system trusted keyrings [ 0.986717] workingset: timestamp_bits=30 max_order=19 bucket_order=0 [ 1.012709] pstore: using deflate compression [ 1.019013] Key type asymmetric registered [ 1.023308] Asymmetric key parser 'x509' registered [ 1.028290] bounce: pool size: 64 pages [ 1.032306] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 1.039796] io scheduler noop registered [ 1.043738] io scheduler deadline registered [ 1.048047] io scheduler cfq registered (default) [ 1.053568] ACPI: AC Adapter [AC] (on-line) [ 1.058317] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0 [ 1.066914] ACPI: Power Button [PWRB] [ 1.070872] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1 [ 1.079891] ACPI: Lid Switch [LID] [ 1.083628] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input2 [ 1.091221] ACPI: Power Button [PWRF] [ 1.095148] tsc: Marking TSC unstable due to TSC halts in idle [ 1.104099] ACPI: Battery Slot [CMB1] (battery present) [ 1.109509] isapnp: Scanning for PnP cards... [ 1.114142] clocksource: Switched to clocksource acpi_pm [ 1.123837] ACPI: Battery Slot [CMB2] (battery absent) [ 1.482272] isapnp: No Plug & Play device found [ 1.487182] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 1.514395] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 1.522211] serial 00:05: skipping CIR port at 0x2e8 / 0x0, IRQ 3 [ 1.530173] ata_piix 0000:00:1f.1: enabling device (0005 -> 0007) [ 1.538301] BUG: unable to handle kernel NULL pointer dereference at 00000000 [ 1.540010] *pde = 00000000 [ 1.540010] Oops: 0002 [#1] PREEMPT [ 1.540010] Modules linked in: [ 1.540010] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.17.0-rc5-mgm+ #57 [ 1.540010] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 1.540010] EIP: dma_direct_alloc+0x22f/0x260 [ 1.540010] EFLAGS: 00210246 CPU: 0 [ 1.540010] EAX: 00000000 EBX: 00000000 ECX: 00000200 EDX: 00000000 [ 1.540010] ESI: 014000c4 EDI: 00000000 EBP: f58d5cdc ESP: f58d5cb8 [ 1.540010] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 1.540010] CR0: 80050033 CR2: 00000000 CR3: 018f2000 CR4: 000006d0 [ 1.540010] Call Trace: [ 1.540010] ? dma_direct_mapping_error+0x10/0x10 [ 1.540010] dmam_alloc_coherent+0xe8/0x160 [ 1.540010] ata_bmdma_port_start+0x42/0x70 [ 1.540010] piix_port_start+0x1a/0x20 [ 1.540010] ata_host_start.part.9+0xcb/0x1c0 [ 1.540010] ata_host_start+0x18/0x20 [ 1.540010] ata_pci_sff_activate_host+0x30/0x2b0 [ 1.540010] ? pci_write_config_byte+0x50/0x60 [ 1.540010] ? ata_bmdma_port_intr+0xe0/0xe0 [ 1.540010] piix_init_one+0x2e1/0x5e0 [ 1.540010] ? _raw_spin_unlock_irqrestore+0x5d/0x80 [ 1.540010] pci_device_probe+0x9a/0x130 [ 1.540010] ? devices_kset_move_last+0x67/0xe0 [ 1.540010] ? sysfs_create_link+0x25/0x50 [ 1.540010] driver_probe_device+0x319/0x4e0 [ 1.540010] ? _raw_spin_unlock+0x2c/0x50 [ 1.540010] ? pci_match_device+0xd2/0x100 [ 1.540010] __driver_attach+0xd9/0x100 [ 1.540010] ? klist_next+0x6b/0xe0 [ 1.540010] ? driver_probe_device+0x4e0/0x4e0 [ 1.540010] bus_for_each_dev+0x4b/0x90 [ 1.540010] driver_attach+0x1e/0x20 [ 1.540010] ? driver_probe_device+0x4e0/0x4e0 [ 1.540010] bus_add_driver+0x18f/0x280 [ 1.540010] driver_register+0x5d/0xf0 [ 1.540010] ? ata_sff_init+0x35/0x35 [ 1.540010] __pci_register_driver+0x50/0x60 [ 1.540010] piix_init+0x19/0x29 [ 1.540010] do_one_initcall+0x62/0x330 [ 1.540010] ? parse_args+0x1cd/0x410 [ 1.540010] kernel_init_freeable+0x214/0x31b [ 1.540010] ? rest_init+0x1f0/0x1f0 [ 1.540010] kernel_init+0x10/0x110 [ 1.540010] ? schedule_tail_wrapper+0x9/0xc [ 1.540010] ret_from_fork+0x2e/0x38 [ 1.540010] Code: 0f 84 02 ff ff ff eb d4 8d 74 26 00 f6 c2 01 75 21 f7 c7 02 00 00 00 75 24 f7 c7 04 00 00 00 75 29 89 d9 31 c0 c1 e9 02 83 e3 03 ab e9 c4 fe ff ff c6 02 00 8d 7a 01 8b 5d e0 eb d4 66 c7 07 [ 1.540010] EIP: dma_direct_alloc+0x22f/0x260 SS:ESP: 0068:f58d5cb8 [ 1.540010] CR2: 0000000000000000 [ 1.540010] ---[ end trace 37f4adc02e5109c8 ]--- [ 1.540010] BUG: sleeping function called from invalid context at ../include/linux/cgroup-defs.h:696 [ 1.540010] in_atomic(): 0, irqs_disabled(): 1, pid: 1, name: swapper [ 1.540010] INFO: lockdep is turned off. [ 1.540010] irq event stamp: 366166 [ 1.540010] hardirqs last enabled at (366165): [] _raw_spin_unlock_irqrestore+0x5d/0x80 [ 1.540010] hardirqs last disabled at (366166): [] common_exception+0x61/0x82 [ 1.540010] softirqs last enabled at (363740): [] __do_softirq+0x389/0x425 [ 1.540010] softirqs last disabled at (363703): [] call_on_stack+0x4c/0x60 [ 1.540010] CPU: 0 PID: 1 Comm: swapper Tainted: G D W 4.17.0-rc5-mgm+ #57 [ 1.540010] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 1.540010] Call Trace: [ 1.540010] dump_stack+0x16/0x26 [ 1.540010] ___might_sleep+0x1f3/0x260 [ 1.540010] ? vprintk_emit+0x21c/0x420 [ 1.540010] __might_sleep+0x36/0x90 [ 1.540010] exit_signals+0x1f/0xf0 [ 1.540010] do_exit+0x79/0xb80 [ 1.540010] ? kernel_init_freeable+0x214/0x31b [ 1.540010] ? rest_init+0x1f0/0x1f0 [ 1.540010] ? kernel_init+0x10/0x110 [ 1.540010] rewind_stack_do_exit+0x10/0x12 [ 1.891523] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 1.891523] [ 1.894765] Kernel Offset: disabled [ 1.894765] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 1.894765] ]--- [ 2.153352] random: fast init done (gdb) list *(dma_direct_alloc+0x22f) 0x573fbf is in dma_direct_alloc (../lib/dma-direct.c:104). 94 95 if (!page) 96 return NULL; 97 ret = page_address(page); 98 if (force_dma_unencrypted()) { 99 set_memory_decrypted((unsigned long)ret, 1 << page_order); 100 *dma_handle = __phys_to_dma(dev, page_to_phys(page)); 101 } else { 102 *dma_handle = phys_to_dma(dev, page_to_phys(page)); 103 } 104 memset(ret, 0, size); 105 return ret; 106 } -- Ville Syrjälä Intel From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f199.google.com (mail-pf0-f199.google.com [209.85.192.199]) by kanga.kvack.org (Postfix) with ESMTP id 82A506B06D3 for ; Sat, 19 May 2018 10:46:42 -0400 (EDT) Received: by mail-pf0-f199.google.com with SMTP id e7-v6so6443771pfi.8 for ; Sat, 19 May 2018 07:46:42 -0700 (PDT) Received: from mga12.intel.com (mga12.intel.com. [192.55.52.136]) by mx.google.com with ESMTPS id f15-v6si9890941pln.359.2018.05.19.07.46.39 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 19 May 2018 07:46:39 -0700 (PDT) Date: Sat, 19 May 2018 17:46:32 +0300 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH] Revert "mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE" Message-ID: <20180519144632.GE23723@intel.com> References: <20180517125959.8095-1-ville.syrjala@linux.intel.com> <20180517132109.GU12670@dhcp22.suse.cz> <20180517133629.GH23723@intel.com> <20180517135832.GI23723@intel.com> <20180517164947.GV12670@dhcp22.suse.cz> <20180517170816.GW12670@dhcp22.suse.cz> <20180518040104.GA17433@js1304-desktop> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20180518040104.GA17433@js1304-desktop> Sender: owner-linux-mm@kvack.org List-ID: To: Joonsoo Kim Cc: Laura Abbott , Michal Hocko , "Aneesh Kumar K . V" , Tony Lindgren , Vlastimil Babka , Johannes Weiner , Laura Abbott , Marek Szyprowski , Mel Gorman , Michal Nazarewicz , Minchan Kim , Rik van Riel , Russell King , Will Deacon , Andrew Morton , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org On Fri, May 18, 2018 at 01:01:04PM +0900, Joonsoo Kim wrote: > On Thu, May 17, 2018 at 10:53:32AM -0700, Laura Abbott wrote: > > On 05/17/2018 10:08 AM, Michal Hocko wrote: > > >On Thu 17-05-18 18:49:47, Michal Hocko wrote: > > >>On Thu 17-05-18 16:58:32, Ville Syrjala wrote: > > >>>On Thu, May 17, 2018 at 04:36:29PM +0300, Ville Syrjala wrote: > > >>>>On Thu, May 17, 2018 at 03:21:09PM +0200, Michal Hocko wrote: > > >>>>>On Thu 17-05-18 15:59:59, Ville Syrjala wrote: > > >>>>>>From: Ville Syrjala > > >>>>>> > > >>>>>>This reverts commit bad8c6c0b1144694ecb0bc5629ede9b8b578b86e. > > >>>>>> > > >>>>>>Make x86 with HIGHMEM=y and CMA=y boot again. > > >>>>> > > >>>>>Is there any bug report with some more details? It is much more > > >>>>>preferable to fix the issue rather than to revert the whole thing > > >>>>>right away. > > >>>> > > >>>>The machine I have in front of me right now didn't give me anything. > > >>>>Black screen, and netconsole was silent. No serial port on this > > >>>>machine unfortunately. > > >>> > > >>>Booted on another machine with serial: > > >> > > >>Could you provide your .config please? > > >> > > >>[...] > > >>>[ 0.000000] cma: Reserved 4 MiB at 0x0000000037000000 > > >>[...] > > >>>[ 0.000000] BUG: Bad page state in process swapper pfn:377fe > > >>>[ 0.000000] page:f53effc0 count:0 mapcount:-127 mapping:00000000 index:0x0 > > >> > > >>OK, so this looks the be the source of the problem. -128 would be a > > >>buddy page but I do not see anything that would set the counter to -127 > > >>and the real map count updates shouldn't really happen that early. > > >> > > >>Maybe CONFIG_DEBUG_VM and CONFIG_DEBUG_HIGHMEM will tell us more. > > > > > >Looking closer, I _think_ that the bug is in set_highmem_pages_init->is_highmem > > >and zone_movable_is_highmem might force CMA pages in the zone movable to > > >be initialized as highmem. And that sounds supicious to me. Joonsoo? > > > > > > > For a point of reference, arm with this configuration doesn't hit this bug > > because highmem pages are freed via the memblock interface only instead > > of iterating through each zone. It looks like the x86 highmem code > > assumes only a single highmem zone and/or it's disjoint? > > Good point! Reason of the crash is that the span of MOVABLE_ZONE is > extended to whole node span for future CMA initialization, and, > normal memory is wrongly freed here. > > Here goes the fix. Ville, Could you test below patch? > I re-generated the issue on my side and this patch fixed it. This gets me past the initial hurdles. But when I tried it on a machine with an actual 32 bit OS it oopsed again later in the boot. [ 0.000000] Linux version 4.17.0-rc5-mgm+ () (gcc version 6.4.0 (Gentoo 6.4.0-r1 p1.3)) #57 PREEMPT Sat May 19 17:25:27 EEST 2018 [ 0.000000] x86/fpu: x87 FPU will use FXSAVE [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009f7ff] usable [ 0.000000] BIOS-e820: [mem 0x000000000009f800-0x000000000009ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000ce000-0x00000000000cffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000000dc000-0x00000000000fffff] reserved [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000007f6effff] usable [ 0.000000] BIOS-e820: [mem 0x000000007f6f0000-0x000000007f6f7fff] ACPI data [ 0.000000] BIOS-e820: [mem 0x000000007f6f8000-0x000000007f6fffff] ACPI NVS [ 0.000000] BIOS-e820: [mem 0x000000007f700000-0x000000007fffffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fec10000-0x00000000fec1ffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000ffb00000-0x00000000ffbfffff] reserved [ 0.000000] BIOS-e820: [mem 0x00000000fff00000-0x00000000ffffffff] reserved [ 0.000000] Notice: NX (Execute Disable) protection missing in CPU! [ 0.000000] SMBIOS 2.3 present. [ 0.000000] DMI: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 0.000000] e820: last_pfn = 0x7f6f0 max_arch_pfn = 0x100000 [ 0.000000] x86/PAT: PAT not supported by CPU. [ 0.000000] x86/PAT: Configuration [0-7]: WB WT UC- UC WB WT UC- UC [ 0.000000] Scanning 1 areas for low memory corruption [ 0.000000] log_buf_len: 2097152 bytes [ 0.000000] early log buf free: 259584(99%) [ 0.000000] RAMDISK: [mem 0x37e58000-0x37feffff] [ 0.000000] Allocated new RAMDISK: [mem 0x37466000-0x375fd7ff] [ 0.000000] Move RAMDISK from [mem 0x37e58000-0x37fef7ff] to [mem 0x37466000-0x375fd7ff] [ 0.000000] ACPI: Early table checksum verification disabled [ 0.000000] ACPI: RSDP 0x00000000000F5970 000014 (v00 FUJ ) [ 0.000000] ACPI: RSDT 0x000000007F6F1D5C 000034 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] ACPI: FACP 0x000000007F6F78E0 000074 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] ACPI: DSDT 0x000000007F6F1D90 005B50 (v01 FUJ FJNB16C 01260000 MSFT 0100000E) [ 0.000000] ACPI: FACS 0x000000007F6F8FC0 000040 [ 0.000000] ACPI: SSDT 0x000000007F6F7954 000288 (v01 FUJ FJNB16C 01260000 INTL 20030228) [ 0.000000] ACPI: SSDT 0x000000007F6F7D68 000270 (v01 FUJ FJNB16C 01260000 MSFT 0100000E) [ 0.000000] ACPI: BOOT 0x000000007F6F7FD8 000028 (v01 FUJ FJNB16C 01260000 FUJ 00001000) [ 0.000000] 1150MB HIGHMEM available. [ 0.000000] 887MB LOWMEM available. [ 0.000000] mapped low ram: 0 - 377fe000 [ 0.000000] low ram: 0 - 377fe000 [ 0.000000] cma: Reserved 4 MiB at 0x37000000 [ 0.000000] tsc: Fast TSC calibration using PIT [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.000000] Normal [mem 0x0000000001000000-0x00000000377fdfff] [ 0.000000] HighMem [mem 0x00000000377fe000-0x000000007f6effff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.000000] node 0: [mem 0x0000000000100000-0x000000007f6effff] [ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000007f6effff] [ 0.000000] Reserved but unavailable: 98 pages [ 0.000000] Using APIC driver default [ 0.000000] Reserving Intel graphics memory at [mem 0x7f700000-0x7fefffff] [ 0.000000] ACPI: PM-Timer IO Port: 0xfc08 [ 0.000000] Local APIC disabled by BIOS -- reenabling. [ 0.000000] Found and enabled local APIC! [ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000cdfff] [ 0.000000] PM: Registered nosave memory: [mem 0x000ce000-0x000cffff] [ 0.000000] PM: Registered nosave memory: [mem 0x000d0000-0x000dbfff] [ 0.000000] PM: Registered nosave memory: [mem 0x000dc000-0x000fffff] [ 0.000000] e820: [mem 0x80000000-0xfec0ffff] available for PCI devices [ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370452778343963 ns [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 520094 [ 0.000000] Kernel command line: root=/dev/sda3 resume=/dev/sda2 lapic modprobe.blacklist=i915 drm.debug=0xe log_buf_len=2M console=ttyS0,115200 [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] microcode: microcode updated early to revision 0x7, date = 2004-11-09 [ 0.000000] Initializing CPU#0 [ 0.000000] Initializing HighMem for node 0 (000377fe:0007f6f0) [ 0.000000] Memory: 2039028K/2087480K available (5733K kernel code, 627K rwdata, 2064K rodata, 640K init, 14252K bss, 44356K reserved, 4096K cma-reserved, 1178568K highmem) [ 0.000000] virtual kernel memory layout: [ 0.000000] fixmap : 0xfff8f000 - 0xfffff000 ( 448 kB) [ 0.000000] cpu_entry : 0xffc00000 - 0xffc28000 ( 160 kB) [ 0.000000] pkmap : 0xff800000 - 0xffc00000 (4096 kB) [ 0.000000] vmalloc : 0xf7ffe000 - 0xff7fe000 ( 120 MB) [ 0.000000] lowmem : 0xc0000000 - 0xf77fe000 ( 887 MB) [ 0.000000] .init : 0xc184f000 - 0xc18ef000 ( 640 kB) [ 0.000000] .data : 0xc1599460 - 0xc183ee40 (2710 kB) [ 0.000000] .text : 0xc1000000 - 0xc1599460 (5733 kB) [ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok. [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] ftrace: allocating 22084 entries in 44 pages [ 0.000000] Running RCU self tests [ 0.000000] Preemptible hierarchical RCU implementation. [ 0.000000] RCU lockdep checking is enabled. [ 0.000000] Tasks RCU enabled. [ 0.000000] kmemleak: Kernel memory leak detector disabled [ 0.000000] NR_IRQS: 2304, nr_irqs: 24, preallocated irqs: 16 [ 0.000000] Console: colour VGA+ 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 32768 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 131072 [ 0.000000] ... CHAINHASH_SIZE: 65536 [ 0.000000] memory used by lock dependency info: 5935 kB [ 0.000000] per task-struct memory footprint: 1344 bytes [ 0.000000] kmemleak: Early log buffer exceeded (785), please increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE [ 0.000000] ACPI: Core revision 20180313 [ 0.000000] ACPI: setting ELCR to 0200 (from 0800) [ 0.003333] APIC: ACPI MADT or MP tables are not detected [ 0.006666] APIC: Switch to virtual wire mode setup with no configuration [ 0.009999] Enabling APIC mode: Flat. Using 0 I/O APICs [ 0.013333] tsc: Fast TSC calibration using PIT [ 0.016666] tsc: Detected 1599.815 MHz processor [ 0.019999] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x170f7614032, max_idle_ns: 440795204679 ns [ 0.023355] Calibrating delay loop (skipped), value calculated using timer frequency.. 3200.94 BogoMIPS (lpj=5332716) [ 0.026674] pid_max: default: 32768 minimum: 301 [ 0.030120] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.033348] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.037411] mce: CPU supports 5 MCE banks [ 0.040032] CPU0: Thermal monitoring enabled (TM2) [ 0.043354] Last level iTLB entries: 4KB 128, 2MB 0, 4MB 2 [ 0.046674] Last level dTLB entries: 4KB 128, 2MB 0, 4MB 8, 1GB 0 [ 0.050006] CPU: Intel(R) Pentium(R) M processor 1600MHz (family: 0x6, model: 0x9, stepping: 0x5) [ 0.053342] Spectre V2 : Vulnerable: Minimal generic ASM retpoline [ 0.056673] Spectre V2 : Spectre v2 mitigation: Filling RSB on context switch [ 0.064166] Performance Events: p6 PMU driver. [ 0.066686] ... version: 0 [ 0.070017] ... bit width: 32 [ 0.073346] ... generic registers: 2 [ 0.076674] ... value mask: 00000000ffffffff [ 0.080007] ... max period: 000000007fffffff [ 0.083340] ... fixed-purpose events: 0 [ 0.086673] ... event mask: 0000000000000003 [ 0.090172] Hierarchical SRCU implementation. [ 0.094612] WARNING: CPU: 0 PID: 1 at ../kernel/kthread.c:505 kthread_park+0x70/0x80 [ 0.096666] Modules linked in: [ 0.096666] CPU: 0 PID: 1 Comm: swapper Not tainted 4.17.0-rc5-mgm+ #57 [ 0.096666] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 0.096666] EIP: kthread_park+0x70/0x80 [ 0.096666] EFLAGS: 00210202 CPU: 0 [ 0.096666] EAX: f58fab80 EBX: f58b4680 ECX: 00000000 EDX: 00000005 [ 0.096666] ESI: c183b5c8 EDI: 00000000 EBP: f58d5f58 ESP: f58d5f54 [ 0.096666] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.096666] CR0: 80050033 CR2: ffd8f000 CR3: 018f2000 CR4: 000006d0 [ 0.096666] Call Trace: [ 0.096666] smpboot_update_cpumask_percpu_thread+0x55/0x70 [ 0.096666] softlockup_update_smpboot_threads+0x2f/0x50 [ 0.096666] lockup_detector_reconfigure+0x1a/0x80 [ 0.096666] lockup_detector_init+0x62/0x6e [ 0.096666] kernel_init_freeable+0xe6/0x31b [ 0.096666] ? rest_init+0x1f0/0x1f0 [ 0.096666] kernel_init+0x10/0x110 [ 0.096666] ? schedule_tail_wrapper+0x9/0xc [ 0.096666] ret_from_fork+0x2e/0x38 [ 0.096666] Code: 8d 76 00 5b 31 c0 5d c3 8d 76 00 0f 0b f6 c2 04 8b 98 38 03 00 00 74 c2 0f 0b 5b b8 da ff ff ff 5d c3 89 f6 8d bc 27 00 00 00 00 <0f> 0b b8 f0 ff ff ff eb c9 8d b4 26 00 00 00 00 3e 8d 74 26 00 [ 0.096666] irq event stamp: 810 [ 0.096666] hardirqs last enabled at (809): [] _raw_spin_unlock_irq+0x27/0x50 [ 0.096666] hardirqs last disabled at (810): [] common_exception+0x61/0x82 [ 0.096666] softirqs last enabled at (286): [] __do_softirq+0x389/0x425 [ 0.096666] softirqs last disabled at (279): [] call_on_stack+0x4c/0x60 [ 0.096666] WARNING: CPU: 0 PID: 1 at ../kernel/kthread.c:505 kthread_park+0x70/0x80 [ 0.096666] random: get_random_bytes called from print_oops_end_marker+0x57/0x70 with crng_init=0 [ 0.096666] ---[ end trace 37f4adc02e5109c7 ]--- [ 0.099999] NMI watchdog: Enabled. Permanently consumes one hw-PMU counter. [ 0.100411] devtmpfs: initialized [ 0.103996] Built 1 zonelists, mobility grouping on. Total pages: 510781 [ 0.106943] PM: Registering ACPI NVS region [mem 0x7f6f8000-0x7f6fffff] (32768 bytes) [ 0.113811] kworker/u2:0 (15) used greatest stack depth: 6708 bytes left [ 0.116909] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370867519511994 ns [ 0.120040] futex hash table entries: 256 (order: 1, 11264 bytes) [ 0.126944] RTC time: 14:32:23, date: 05/19/18 [ 0.130504] NET: Registered protocol family 16 [ 0.136973] audit: initializing netlink subsys (disabled) [ 0.140948] cpuidle: using governor ladder [ 0.143370] audit: type=2000 audit(1526740342.139:1): state=initialized audit_enabled=0 res=1 [ 0.146993] cpuidle: using governor menu [ 0.150336] Simple Boot Flag at 0x7f set to 0x1 [ 0.153453] ACPI: bus type PCI registered [ 0.156767] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 [ 0.166545] PCI: PCI BIOS revision 2.10 entry at 0xfd9b2, last bus=3 [ 0.166689] PCI: Using configuration type 1 for base access [ 0.177531] kworker/u2:1 (50) used greatest stack depth: 6428 bytes left [ 0.200361] HugeTLB registered 4.00 MiB page size, pre-allocated 0 pages [ 0.204690] ACPI: Added _OSI(Module Device) [ 0.206788] ACPI: Added _OSI(Processor Device) [ 0.210189] ACPI: Added _OSI(3.0 _SCP Extensions) [ 0.213366] ACPI: Added _OSI(Processor Aggregator Device) [ 0.216692] ACPI: Added _OSI(Linux-Dell-Video) [ 0.236095] ACPI: 3 ACPI AML tables successfully acquired and loaded [ 0.253568] ACPI: Interpreter enabled [ 0.256768] ACPI: (supports S0 S3 S4 S5) [ 0.260020] ACPI: Using PIC for interrupt routing [ 0.263464] PCI: Ignoring host bridge windows from ACPI; if necessary, use "pci=use_crs" and report a bug [ 0.267543] ACPI: Enabled 5 GPEs in block 00 to 1F [ 0.299274] acpi LNXIOBAY:00: ACPI dock station (docks/bays count: 1) [ 0.312078] acpi PNP0C15:00: ACPI dock station (docks/bays count: 2) [ 0.318281] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.320131] acpi PNP0A03:00: _OSC: OS supports [Segments] [ 0.326797] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM [ 0.330075] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. [ 0.336967] PCI host bridge to bus 0000:00 [ 0.340080] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] [ 0.343361] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffff] [ 0.346701] pci_bus 0000:00: root bus resource [bus 00-ff] [ 0.358256] pci 0000:00:1f.0: quirk: [io 0xfc00-0xfc7f] claimed by ICH4 ACPI/GPIO/TCO [ 0.360189] pci 0000:00:1f.0: quirk: [io 0xfc80-0xfcbf] claimed by ICH4 GPIO [ 0.363884] pci 0000:00:1f.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7] [ 0.366796] pci 0000:00:1f.1: legacy IDE quirk: reg 0x14: [io 0x03f6] [ 0.370028] pci 0000:00:1f.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177] [ 0.373360] pci 0000:00:1f.1: legacy IDE quirk: reg 0x1c: [io 0x0376] [ 0.382127] pci 0000:00:1e.0: PCI bridge to [bus 01-03] (subtractive decode) [ 0.384025] pci 0000:00:1e.0: bridge has subordinate 03 but max busn 06 [ 0.393971] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 10 *11) [ 0.397013] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 9 10 *11) [ 0.400280] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 9 10 *11) [ 0.403652] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 9 10 *11) [ 0.406944] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 7 9 10 *11) [ 0.413586] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 9 10 *11) [ 0.420136] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 7 9 10 11) *0, disabled. [ 0.423589] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 7 9 10 *11) [ 0.430878] pci 0000:00:02.0: vgaarb: setting as boot VGA device [ 0.433333] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 0.433434] pci 0000:00:02.0: vgaarb: bridge control possible [ 0.436693] vgaarb: loaded [ 0.440528] SCSI subsystem initialized [ 0.443978] PCI: Using ACPI for IRQ routing [ 0.454474] clocksource: Switched to clocksource tsc-early [ 0.506079] pnp: PnP ACPI init [ 0.510137] system 00:00: [io 0x04d0-0x04d1] has been reserved [ 0.516193] system 00:00: [io 0xf800-0xf87f] has been reserved [ 0.522136] system 00:00: [io 0xf880-0xf8ff] has been reserved [ 0.528084] system 00:00: [io 0xfd00-0xfd6f] has been reserved [ 0.534027] system 00:00: [io 0xfe00-0xfe01] has been reserved [ 0.539965] system 00:00: [io 0xfc00-0xfc7f] has been reserved [ 0.545900] system 00:00: [io 0xfc80-0xfcbf] has been reserved [ 0.551821] system 00:00: [mem 0x000ccc00-0x000cffff] could not be reserved [ 0.558827] system 00:00: [mem 0xffb00000-0xffbfffff] has been reserved [ 0.565440] system 00:00: [mem 0xfec10000-0xfec1ffff] has been reserved [ 0.578887] pnp: PnP ACPI: found 7 devices [ 0.635088] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 0.644046] pci 0000:00:1e.0: BAR 9: assigned [mem 0x80000000-0x8fffffff pref] [ 0.651268] pci 0000:00:1f.1: BAR 5: assigned [mem 0x90000000-0x900003ff] [ 0.658079] pci 0000:01:0a.0: BAR 0: assigned [mem 0x94000000-0x94000fff] [ 0.664867] pci 0000:01:0a.0: BAR 9: assigned [mem 0x80000000-0x83ffffff pref] [ 0.672087] pci 0000:01:0a.0: BAR 10: assigned [mem 0x98000000-0x9bffffff] [ 0.678960] pci 0000:01:0a.1: BAR 0: assigned [mem 0x9c000000-0x9c000fff] [ 0.685747] pci 0000:01:0a.1: BAR 9: assigned [mem 0x84000000-0x87ffffff pref] [ 0.692966] pci 0000:01:0a.1: BAR 10: assigned [mem 0xa0000000-0xa3ffffff] [ 0.699837] pci 0000:01:0a.0: BAR 7: assigned [io 0x3400-0x34ff] [ 0.705927] pci 0000:01:0a.0: BAR 8: assigned [io 0x3800-0x38ff] [ 0.712018] pci 0000:01:0a.1: BAR 7: assigned [io 0x3c00-0x3cff] [ 0.718110] pci 0000:01:0a.1: BAR 8: assigned [io 0x1000-0x10ff] [ 0.724208] pci 0000:01:0a.0: CardBus bridge to [bus 02] [ 0.729517] pci 0000:01:0a.0: bridge window [io 0x3400-0x34ff] [ 0.735609] pci 0000:01:0a.0: bridge window [io 0x3800-0x38ff] [ 0.741700] pci 0000:01:0a.0: bridge window [mem 0x80000000-0x83ffffff pref] [ 0.748919] pci 0000:01:0a.0: bridge window [mem 0x98000000-0x9bffffff] [ 0.755705] pci 0000:01:0a.1: CardBus bridge to [bus 03] [ 0.761013] pci 0000:01:0a.1: bridge window [io 0x3c00-0x3cff] [ 0.767103] pci 0000:01:0a.1: bridge window [io 0x1000-0x10ff] [ 0.773195] pci 0000:01:0a.1: bridge window [mem 0x84000000-0x87ffffff pref] [ 0.780414] pci 0000:01:0a.1: bridge window [mem 0xa0000000-0xa3ffffff] [ 0.787200] pci 0000:00:1e.0: PCI bridge to [bus 01-03] [ 0.792424] pci 0000:00:1e.0: bridge window [io 0x3000-0x3fff] [ 0.798518] pci 0000:00:1e.0: bridge window [mem 0xd0200000-0xd02fffff] [ 0.805304] pci 0000:00:1e.0: bridge window [mem 0x80000000-0x8fffffff pref] [ 0.813017] NET: Registered protocol family 2 [ 0.817943] tcp_listen_portaddr_hash hash table entries: 512 (order: 2, 20480 bytes) [ 0.825772] TCP established hash table entries: 8192 (order: 3, 32768 bytes) [ 0.832888] TCP bind hash table entries: 8192 (order: 6, 294912 bytes) [ 0.840507] TCP: Hash tables configured (established 8192 bind 8192) [ 0.846996] UDP hash table entries: 512 (order: 3, 40960 bytes) [ 0.853062] UDP-Lite hash table entries: 512 (order: 3, 40960 bytes) [ 0.859688] NET: Registered protocol family 1 [ 0.864101] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 0.872882] PCI Interrupt Link [LNKA] enabled at IRQ 11 [ 0.878545] PCI Interrupt Link [LNKD] enabled at IRQ 11 [ 0.884180] PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 0.889816] PCI Interrupt Link [LNKH] enabled at IRQ 11 [ 0.895590] Unpacking initramfs... [ 0.905875] Freeing initrd memory: 1632K [ 0.959992] DMA-API: preallocated 65536 debug entries [ 0.965077] DMA-API: debugging enabled by kernel config [ 0.971831] Scanning for low memory corruption every 60 seconds [ 0.980868] Initialise system trusted keyrings [ 0.986717] workingset: timestamp_bits=30 max_order=19 bucket_order=0 [ 1.012709] pstore: using deflate compression [ 1.019013] Key type asymmetric registered [ 1.023308] Asymmetric key parser 'x509' registered [ 1.028290] bounce: pool size: 64 pages [ 1.032306] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252) [ 1.039796] io scheduler noop registered [ 1.043738] io scheduler deadline registered [ 1.048047] io scheduler cfq registered (default) [ 1.053568] ACPI: AC Adapter [AC] (on-line) [ 1.058317] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0 [ 1.066914] ACPI: Power Button [PWRB] [ 1.070872] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1 [ 1.079891] ACPI: Lid Switch [LID] [ 1.083628] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input2 [ 1.091221] ACPI: Power Button [PWRF] [ 1.095148] tsc: Marking TSC unstable due to TSC halts in idle [ 1.104099] ACPI: Battery Slot [CMB1] (battery present) [ 1.109509] isapnp: Scanning for PnP cards... [ 1.114142] clocksource: Switched to clocksource acpi_pm [ 1.123837] ACPI: Battery Slot [CMB2] (battery absent) [ 1.482272] isapnp: No Plug & Play device found [ 1.487182] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 1.514395] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 1.522211] serial 00:05: skipping CIR port at 0x2e8 / 0x0, IRQ 3 [ 1.530173] ata_piix 0000:00:1f.1: enabling device (0005 -> 0007) [ 1.538301] BUG: unable to handle kernel NULL pointer dereference at 00000000 [ 1.540010] *pde = 00000000 [ 1.540010] Oops: 0002 [#1] PREEMPT [ 1.540010] Modules linked in: [ 1.540010] CPU: 0 PID: 1 Comm: swapper Tainted: G W 4.17.0-rc5-mgm+ #57 [ 1.540010] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 1.540010] EIP: dma_direct_alloc+0x22f/0x260 [ 1.540010] EFLAGS: 00210246 CPU: 0 [ 1.540010] EAX: 00000000 EBX: 00000000 ECX: 00000200 EDX: 00000000 [ 1.540010] ESI: 014000c4 EDI: 00000000 EBP: f58d5cdc ESP: f58d5cb8 [ 1.540010] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 1.540010] CR0: 80050033 CR2: 00000000 CR3: 018f2000 CR4: 000006d0 [ 1.540010] Call Trace: [ 1.540010] ? dma_direct_mapping_error+0x10/0x10 [ 1.540010] dmam_alloc_coherent+0xe8/0x160 [ 1.540010] ata_bmdma_port_start+0x42/0x70 [ 1.540010] piix_port_start+0x1a/0x20 [ 1.540010] ata_host_start.part.9+0xcb/0x1c0 [ 1.540010] ata_host_start+0x18/0x20 [ 1.540010] ata_pci_sff_activate_host+0x30/0x2b0 [ 1.540010] ? pci_write_config_byte+0x50/0x60 [ 1.540010] ? ata_bmdma_port_intr+0xe0/0xe0 [ 1.540010] piix_init_one+0x2e1/0x5e0 [ 1.540010] ? _raw_spin_unlock_irqrestore+0x5d/0x80 [ 1.540010] pci_device_probe+0x9a/0x130 [ 1.540010] ? devices_kset_move_last+0x67/0xe0 [ 1.540010] ? sysfs_create_link+0x25/0x50 [ 1.540010] driver_probe_device+0x319/0x4e0 [ 1.540010] ? _raw_spin_unlock+0x2c/0x50 [ 1.540010] ? pci_match_device+0xd2/0x100 [ 1.540010] __driver_attach+0xd9/0x100 [ 1.540010] ? klist_next+0x6b/0xe0 [ 1.540010] ? driver_probe_device+0x4e0/0x4e0 [ 1.540010] bus_for_each_dev+0x4b/0x90 [ 1.540010] driver_attach+0x1e/0x20 [ 1.540010] ? driver_probe_device+0x4e0/0x4e0 [ 1.540010] bus_add_driver+0x18f/0x280 [ 1.540010] driver_register+0x5d/0xf0 [ 1.540010] ? ata_sff_init+0x35/0x35 [ 1.540010] __pci_register_driver+0x50/0x60 [ 1.540010] piix_init+0x19/0x29 [ 1.540010] do_one_initcall+0x62/0x330 [ 1.540010] ? parse_args+0x1cd/0x410 [ 1.540010] kernel_init_freeable+0x214/0x31b [ 1.540010] ? rest_init+0x1f0/0x1f0 [ 1.540010] kernel_init+0x10/0x110 [ 1.540010] ? schedule_tail_wrapper+0x9/0xc [ 1.540010] ret_from_fork+0x2e/0x38 [ 1.540010] Code: 0f 84 02 ff ff ff eb d4 8d 74 26 00 f6 c2 01 75 21 f7 c7 02 00 00 00 75 24 f7 c7 04 00 00 00 75 29 89 d9 31 c0 c1 e9 02 83 e3 03 ab e9 c4 fe ff ff c6 02 00 8d 7a 01 8b 5d e0 eb d4 66 c7 07 [ 1.540010] EIP: dma_direct_alloc+0x22f/0x260 SS:ESP: 0068:f58d5cb8 [ 1.540010] CR2: 0000000000000000 [ 1.540010] ---[ end trace 37f4adc02e5109c8 ]--- [ 1.540010] BUG: sleeping function called from invalid context at ../include/linux/cgroup-defs.h:696 [ 1.540010] in_atomic(): 0, irqs_disabled(): 1, pid: 1, name: swapper [ 1.540010] INFO: lockdep is turned off. [ 1.540010] irq event stamp: 366166 [ 1.540010] hardirqs last enabled at (366165): [] _raw_spin_unlock_irqrestore+0x5d/0x80 [ 1.540010] hardirqs last disabled at (366166): [] common_exception+0x61/0x82 [ 1.540010] softirqs last enabled at (363740): [] __do_softirq+0x389/0x425 [ 1.540010] softirqs last disabled at (363703): [] call_on_stack+0x4c/0x60 [ 1.540010] CPU: 0 PID: 1 Comm: swapper Tainted: G D W 4.17.0-rc5-mgm+ #57 [ 1.540010] Hardware name: FUJITSU SIEMENS LIFEBOOK S6120/FJNB16C, BIOS Version 1.26 05/10/2004 [ 1.540010] Call Trace: [ 1.540010] dump_stack+0x16/0x26 [ 1.540010] ___might_sleep+0x1f3/0x260 [ 1.540010] ? vprintk_emit+0x21c/0x420 [ 1.540010] __might_sleep+0x36/0x90 [ 1.540010] exit_signals+0x1f/0xf0 [ 1.540010] do_exit+0x79/0xb80 [ 1.540010] ? kernel_init_freeable+0x214/0x31b [ 1.540010] ? rest_init+0x1f0/0x1f0 [ 1.540010] ? kernel_init+0x10/0x110 [ 1.540010] rewind_stack_do_exit+0x10/0x12 [ 1.891523] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 1.891523] [ 1.894765] Kernel Offset: disabled [ 1.894765] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 1.894765] ]--- [ 2.153352] random: fast init done (gdb) list *(dma_direct_alloc+0x22f) 0x573fbf is in dma_direct_alloc (../lib/dma-direct.c:104). 94 95 if (!page) 96 return NULL; 97 ret = page_address(page); 98 if (force_dma_unencrypted()) { 99 set_memory_decrypted((unsigned long)ret, 1 << page_order); 100 *dma_handle = __phys_to_dma(dev, page_to_phys(page)); 101 } else { 102 *dma_handle = phys_to_dma(dev, page_to_phys(page)); 103 } 104 memset(ret, 0, size); 105 return ret; 106 } -- Ville Syrjala Intel