Your message dated Thu, 11 Jun 2015 14:25:55 +0100 with message-id <1434029155.9977.6.camel@decadent.org.uk> and subject line Re: Bug#788404: linux-image-3.16.0-4-amd64: the 3.16 kernel appears to suppress the system's entropy has caused the Debian Bug report #788404, regarding linux-image-3.16.0-4-amd64: the 3.16 kernel appears to suppress the system's entropy to be marked as done. This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact owner@bugs.debian.org immediately.) -- 788404: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=788404 Debian Bug Tracking System Contact owner@bugs.debian.org with problems
--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: linux-image-3.16.0-4-amd64: the 3.16 kernel appears to suppress the system's entropy
- From: ryan <only1ryan@postpro.net>
- Date: Wed, 10 Jun 2015 21:20:08 -0400
- Message-id: <[🔎] 20150611012008.3568.66109.reportbug@localhost>
Package: src:linux Version: 3.16.7-ckt11-1 Severity: normal The 3.16 kernel appears to suppress the system's entropy, by which I mean the output in /proc/sys/kernel/random/entropy_avail. When I upgraded from Debian 7 to 8, in GRUB I was left with the options to boot the 3.2 and 3.16 kernels using sysvinit and systemd. If I boot in the old way, 3.2 and sysvinit, depending on what the computer is doing, the output sits around 3000. If I boot with 3.16 and sysvinit or 3.16 and systemd then the output is about 900-1500. Try as I might by playing a video clip, copying files, surfing the internet, and/or using the mouse to move a window around the screen, the output still remains below 1500. Should different kernels affect the system's entropy like this? Otherwise, haveged, for example, will boost the output in all three cases. However, whereas the case of 3.2 and sysvinit might jump as high as 3600-3900, the two cases for 3.16 still hit a ceiling of about 2000. -- Package-specific info: ** Version: Linux version 3.16.0-4-amd64 (debian-kernel@lists.debian.org) (gcc version 4.8.4 (Debian 4.8.4-1) ) #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) ** Command line: BOOT_IMAGE=/vmlinuz-3.16.0-4-amd64 root=/dev/mapper/cryptvg-root ro initrd=/install/initrd.gz quiet init=/lib/sysvinit/init ** Not tainted ** Kernel log: [ 28.502602] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 [ 28.502669] iTCO_wdt: Found a ICH7-M or ICH7-U TCO device (Version=2, TCOBASE=0x0460) [ 28.502896] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0) [ 28.610063] [drm] Memory usable by graphics device = 256M [ 28.610068] [drm] Replacing VGA console driver [ 28.610689] Console: switching to colour dummy device 80x25 [ 28.611638] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 28.611640] [drm] Driver supports precise vblank timestamp query. [ 28.611715] [drm] applying backlight present quirk [ 28.611734] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 28.805928] [drm] initialized overlay support [ 28.841901] ath: EEPROM regdomain: 0x64 [ 28.841906] ath: EEPROM indicates we should expect a direct regpair map [ 28.841910] ath: Country alpha2 being used: 00 [ 28.841911] ath: Regpair used: 0x64 [ 28.892894] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht' [ 28.893255] ieee80211 phy0: Atheros AR5418 MAC/BB Rev:2 AR5133 RF Rev:81 mem=0xffffc900044c0000, irq=17 [ 28.960167] fbcon: inteldrmfb (fb0) is primary device [ 29.264077] usb 4-1: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 64 rq 0 len 0 ret -84 [ 29.688360] usb 4-1: USB disconnect, device number 2 [ 29.829123] appletouch 1-2:1.1: Geyser mode initialized. [ 29.829263] input: appletouch as /devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2:1.1/input/input16 [ 29.829457] usbcore: registered new interface driver appletouch [ 29.884926] Console: switching to colour frame buffer device 160x50 [ 29.888500] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ 29.888502] i915 0000:00:02.0: registered panic notifier [ 29.900089] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 [ 30.044115] usb 4-1: new full-speed USB device number 3 using uhci_hcd [ 30.148969] cfg80211: World regulatory domain updated: [ 30.148977] cfg80211: DFS Master region: unset [ 30.148979] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time) [ 30.148983] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A) [ 30.148986] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A) [ 30.148988] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A) [ 30.148991] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A) [ 30.148994] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s) [ 30.148996] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s) [ 30.148999] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A) [ 30.149001] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A) [ 30.240105] usb 4-1: New USB device found, idVendor=05ac, idProduct=8205 [ 30.240114] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 30.459719] Bluetooth: Core ver 2.19 [ 30.459757] NET: Registered protocol family 31 [ 30.459759] Bluetooth: HCI device and connection manager initialized [ 30.459773] Bluetooth: HCI socket layer initialized [ 30.459777] Bluetooth: L2CAP socket layer initialized [ 30.459792] Bluetooth: SCO socket layer initialized [ 30.664296] usbcore: registered new interface driver btusb [ 31.718628] EXT4-fs (dm-2): re-mounted. Opts: (null) [ 32.167876] usb 5-4: firmware: failed to load isight.fw (-2) [ 32.167947] usb 5-4: Direct firmware load failed with error -2 [ 32.167950] usb 5-4: Falling back to user helper [ 32.168788] usbcore: registered new interface driver isight_firmware [ 32.384473] EXT4-fs (dm-2): re-mounted. Opts: errors=remount-ro [ 33.250077] lp: driver loaded but no devices found [ 33.366682] ppdev: user-space parallel port driver [ 33.551542] loop: module loaded [ 33.646449] fuse init (API version 7.23) [ 33.907911] Adding 3903484k swap on /dev/mapper/cryptvg-swap. Priority:-1 extents:1 across:3903484k FS [ 34.275086] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null) [ 34.305366] EXT4-fs (dm-3): mounted filesystem with ordered data mode. Opts: (null) [ 34.947416] ip_tables: (C) 2000-2006 Netfilter Core Team [ 34.987003] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) [ 35.162879] ip6_tables: (C) 2000-2006 Netfilter Core Team [ 36.577739] RPC: Registered named UNIX socket transport module. [ 36.577744] RPC: Registered udp transport module. [ 36.577746] RPC: Registered tcp transport module. [ 36.577747] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 36.617637] FS-Cache: Loaded [ 36.664561] FS-Cache: Netfs 'nfs' registered for caching [ 36.748760] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [ 38.893505] input: ACPI Virtual Keyboard Device as /devices/virtual/input/input17 [ 44.083845] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 44.083850] Bluetooth: BNEP filters: protocol multicast [ 44.083864] Bluetooth: BNEP socket layer initialized [ 46.070493] systemd-logind[2780]: New seat seat0. [ 46.104610] systemd-logind[2780]: Watching system buttons on /dev/input/event8 (Power Button) [ 46.104712] systemd-logind[2780]: Watching system buttons on /dev/input/event9 (Video Bus) [ 46.104804] systemd-logind[2780]: Watching system buttons on /dev/input/event6 (Power Button) [ 46.104893] systemd-logind[2780]: Watching system buttons on /dev/input/event5 (Lid Switch) [ 46.104985] systemd-logind[2780]: Watching system buttons on /dev/input/event7 (Sleep Button) [ 46.786768] sky2 0000:01:00.0 eth0: enabling interface [ 46.786938] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 46.793669] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 51.866047] systemd-logind[2780]: Failed to start user service: Unknown unit: user@108.service [ 51.874444] systemd-logind[2780]: New session c1 of user lightdm. [ 76.240100] systemd-logind[2780]: Failed to start user service: Unknown unit: user@1000.service [ 76.245692] systemd-logind[2780]: New session 1 of user ryan. [ 162.653179] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 164.640840] wlan0: authenticate with f8:e9:03:b1:68:b9 [ 164.644518] wlan0: send auth to f8:e9:03:b1:68:b9 (try 1/3) [ 164.645232] wlan0: authenticated [ 164.648087] wlan0: associate with f8:e9:03:b1:68:b9 (try 1/3) [ 164.649034] wlan0: RX AssocResp from f8:e9:03:b1:68:b9 (capab=0x1011 status=0 aid=2) [ 164.649111] wlan0: associated [ 164.649157] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 171.957281] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead. [ 173.288238] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:14:89:e8:b2:1a:58:08:00 SRC=192.168.1.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 [ 298.728322] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:14:89:e8:b2:1a:58:08:00 SRC=192.168.1.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 [ 549.608642] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:14:89:e8:b2:1a:58:08:00 SRC=192.168.1.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 ** Model information sys_vendor: Apple Inc. product_name: MacBook2,1 product_version: 1.0 chassis_vendor: Apple Inc. chassis_version: Mac-F4208CA9 bios_vendor: Apple Inc. bios_version: MB21.88Z.00A5.B07.0706270922 board_vendor: Apple Inc. board_name: Mac-F4208CA9 board_version: PVT ** Loaded modules: ctr ccm bnep uinput nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT xt_comment xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables fuse loop parport_pc ppdev lp parport isight_firmware ecb btusb bluetooth 6lowpan_iphc appletouch arc4 ath9k i915 iTCO_wdt ath9k_common iTCO_vendor_support ath9k_hw ath joydev mac80211 evdev coretemp drm_kms_helper cfg80211 applesmc kvm_intel kvm input_polldev drm lpc_ich mfd_core snd_hda_codec_idt snd_hda_codec_generic pcspkr snd_hda_intel snd_hda_controller i2c_algo_bit i2c_i801 snd_hda_codec i2c_core acpi_cpufreq rfkill snd_hwdep snd_pcm snd_timer rng_core sbs snd shpchp battery sbshc soundcore apple_bl video ac button processor thermal_sys ext4 crc16 mbcache jbd2 serpent_sse2_x86_64 serpent_generic lrw glue_helper ablk_helper cryptd xts gf128mul algif_skcipher af_alg hid_generic hid_appleir hid_apple usbhid hid dm_crypt dm_mod sg sd_mod crc_t10dif crct10dif_generic crct10dif_common sr_mod cdrom ata_generic ata_piix firewire_ohci firewire_core crc_itu_t libata scsi_mod ehci_pci sky2 uhci_hcd ehci_hcd usbcore usb_common ** Network interface configuration: auto lo iface lo inet loopback ** Network status: *** IP interfaces and addresses: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether 00:17:f2:31:fa:47 brd ff:ff:ff:ff:ff:ff 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether ee:9e:8d:6d:93:e0 brd ff:ff:ff:ff:ff:ff inet 192.168.1.7/24 brd 192.168.1.255 scope global dynamic wlan0 valid_lft 2968sec preferred_lft 2968sec inet6 fe80::ec9e:8dff:fe6d:93e0/64 scope link valid_lft forever preferred_lft forever *** Device statistics: Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed eth0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 wlan0: 2835309 2705 0 0 0 0 0 0 219408 1516 0 0 0 0 0 0 lo: 22138 80 0 0 0 0 0 0 22138 80 0 0 0 0 0 0 *** Protocol statistics: Ip: 2423 total packets received 1 with invalid addresses 0 forwarded 0 incoming packets discarded 2190 incoming packets delivered 1495 requests sent out 2 dropped because of missing route Icmp: 0 ICMP messages received 0 input ICMP message failed. ICMP input histogram: 0 ICMP messages sent 0 ICMP messages failed ICMP output histogram: Tcp: 58 active connections openings 2 passive connection openings 20 failed connection attempts 0 connection resets received 0 connections established 2177 segments received 1480 segments send out 2 segments retransmited 0 bad segments received. 25 resets sent Udp: 73 packets received 0 packets to unknown port received. 0 packet receive errors 71 packets sent UdpLite: TcpExt: 13 TCP sockets finished time wait in fast timer 18 delayed acks sent 1 packets directly queued to recvmsg prequeue. 1774 packet headers predicted 187 acknowledgments not containing data payload received 21 predicted acknowledgments 1 times recovered from packet loss by selective acknowledgements Detected reordering 1 times using time stamp 1 congestion windows partially recovered using Hoe heuristic 1 fast retransmits TCPLossProbes: 1 TCPLossProbeRecovery: 1 2 DSACKs received 1 connections reset due to unexpected data TCPDSACKIgnoredNoUndo: 2 TCPSackShiftFallback: 9 TCPRcvCoalesce: 692 TCPAutoCorking: 2 TCPOrigDataSent: 204 IpExt: InMcastPkts: 34 OutMcastPkts: 29 InBcastPkts: 9 InOctets: 2786309 OutOctets: 163632 InMcastOctets: 4575 OutMcastOctets: 4273 InBcastOctets: 1180 InNoECTPkts: 2423 ** PCI devices: 00:00.0 Host bridge [0600]: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub [8086:27a0] (rev 03) Subsystem: Intel Corporation Device [8086:7270] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx- Latency: 0 Capabilities: <access denied> Kernel driver in use: agpgart-intel 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 16 Region 0: Memory at 90380000 (32-bit, non-prefetchable) [size=512K] Region 1: I/O ports at 20e0 [size=8] Region 2: Memory at 80000000 (32-bit, prefetchable) [size=256M] Region 3: Memory at 90400000 (32-bit, non-prefetchable) [size=256K] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 00:02.1 Display controller [0380]: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller [8086:27a6] (rev 03) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Region 0: Memory at 90300000 (32-bit, non-prefetchable) [size=512K] Capabilities: <access denied> 00:07.0 Performance counters [1101]: Intel Corporation Device [8086:27a3] (rev 03) Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 11 Region 0: Memory at 90444000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> 00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 02) Subsystem: SigmaTel STAC9221 HD Audio Codec [8384:7680] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Interrupt: pin A routed to IRQ 43 Region 0: Memory at 90440000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 00:1c.0 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 1 [8086:27d0] (rev 02) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00001000-00001fff Memory behind bridge: 90200000-902fffff Prefetchable memory behind bridge: 0000000100000000-00000001001fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.1 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 2 [8086:27d2] (rev 02) (prog-if 00 [Normal decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: 90100000-901fffff Prefetchable memory behind bridge: 0000000100200000-00000001003fffff Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> Kernel driver in use: pcieport 00:1d.0 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 [8086:27c8] (rev 02) (prog-if 00 [UHCI]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 21 Region 4: I/O ports at 2080 [size=32] Kernel driver in use: uhci_hcd 00:1d.1 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 [8086:27c9] (rev 02) (prog-if 00 [UHCI]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin B routed to IRQ 19 Region 4: I/O ports at 2060 [size=32] Kernel driver in use: uhci_hcd 00:1d.2 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 [8086:27ca] (rev 02) (prog-if 00 [UHCI]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin C routed to IRQ 18 Region 4: I/O ports at 2040 [size=32] Kernel driver in use: uhci_hcd 00:1d.3 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 [8086:27cb] (rev 02) (prog-if 00 [UHCI]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin D routed to IRQ 16 Region 4: I/O ports at 2020 [size=32] Kernel driver in use: uhci_hcd 00:1d.7 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller [8086:27cc] (rev 02) (prog-if 20 [EHCI]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 21 Region 0: Memory at 90445400 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci-pci 00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev e2) (prog-if 01 [Subtractive decode]) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=32 Memory behind bridge: 90000000-900fffff Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR- BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B- PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn- Capabilities: <access denied> 00:1f.0 ISA bridge [0601]: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge [8086:27b9] (rev 02) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Capabilities: <access denied> Kernel driver in use: lpc_ich 00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 02) (prog-if 8a [Master SecP PriP]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 18 Region 0: I/O ports at 01f0 [size=8] Region 1: I/O ports at 03f4 Region 2: I/O ports at 0170 [size=8] Region 3: I/O ports at 0374 Region 4: I/O ports at 20b0 [size=16] Kernel driver in use: ata_piix 00:1f.2 IDE interface [0101]: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [IDE mode] [8086:27c4] (rev 02) (prog-if 8f [Master SecP SecO PriP PriO]) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin B routed to IRQ 19 Region 0: I/O ports at 20c8 [size=8] Region 1: I/O ports at 20ec [size=4] Region 2: I/O ports at 20c0 [size=8] Region 3: I/O ports at 20e8 [size=4] Region 4: I/O ports at 20a0 [size=16] Region 5: Memory at 90445000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ata_piix 00:1f.3 SMBus [0c05]: Intel Corporation NM10/ICH7 Family SMBus Controller [8086:27da] (rev 02) Subsystem: Intel Corporation Device [8086:7270] Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin B routed to IRQ 19 Region 4: I/O ports at efa0 [size=32] 01:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 22) Subsystem: Marvell Technology Group Ltd. Marvell RDK-8053 [11ab:5321] Physical Slot: 0 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Interrupt: pin A routed to IRQ 42 Region 0: Memory at 90200000 (64-bit, non-prefetchable) [size=16K] Region 2: I/O ports at 1000 [size=256] Expansion ROM at 90220000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: sky2 02:00.0 Network controller [0280]: Qualcomm Atheros AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express) [168c:0024] (rev 01) Physical Slot: 1 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Interrupt: pin A routed to IRQ 17 Region 0: Memory at 90100000 (64-bit, non-prefetchable) [size=64K] Capabilities: <access denied> Kernel driver in use: ath9k 03:03.0 FireWire (IEEE 1394) [0c00]: LSI Corporation FW322/323 [TrueFire] 1394a Controller [11c1:5811] (rev 61) (prog-if 10 [OHCI]) Subsystem: LSI Corporation FW322/323 [TrueFire] 1394a Controller [11c1:5811] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B+ DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 248 (3000ns min, 6000ns max), Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 19 Region 0: Memory at 90000000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: firewire_ohci ** USB devices: Bus 005 Device 003: ID 05ac:8300 Apple, Inc. Built-in iSight (no firmware loaded) Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 003: ID 05ac:8205 Apple, Inc. Bluetooth HCI Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 05ac:8240 Apple, Inc. Built-in IR Receiver Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 05ac:021a Apple, Inc. Internal Keyboard/Trackpad (ANSI) Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub -- System Information: Debian Release: 8.1 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: unable to detect Versions of packages linux-image-3.16.0-4-amd64 depends on: ii debconf [debconf-2.0] 1.5.56 ii initramfs-tools [linux-initramfs-tool] 0.120 ii kmod 18-3 ii linux-base 3.5 ii module-init-tools 18-3 Versions of packages linux-image-3.16.0-4-amd64 recommends: ii firmware-linux-free 3.3 ii irqbalance 1.0.6-3 Versions of packages linux-image-3.16.0-4-amd64 suggests: pn debian-kernel-handbook <none> ii grub-pc 2.02~beta2-22 pn linux-doc-3.16 <none> Versions of packages linux-image-3.16.0-4-amd64 is related to: pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux <none> pn firmware-linux-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-ralink <none> pn firmware-realtek <none> pn xen-hypervisor <none> -- debconf information: linux-image-3.16.0-4-amd64/prerm/removing-running-kernel-3.16.0-4-amd64: true linux-image-3.16.0-4-amd64/postinst/depmod-error-initrd-3.16.0-4-amd64: false linux-image-3.16.0-4-amd64/postinst/mips-initrd-3.16.0-4-amd64:
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--- Begin Message ---
- To: 788404-done@bugs.debian.org
- Subject: Re: Bug#788404: linux-image-3.16.0-4-amd64: the 3.16 kernel appears to suppress the system's entropy
- From: Ben Hutchings <ben@decadent.org.uk>
- Date: Thu, 11 Jun 2015 14:25:55 +0100
- Message-id: <1434029155.9977.6.camel@decadent.org.uk>
- In-reply-to: <[🔎] 20150611012008.3568.66109.reportbug@localhost>
- References: <[🔎] 20150611012008.3568.66109.reportbug@localhost>
On Wed, 2015-06-10 at 21:20 -0400, ryan wrote: > Package: src:linux > Version: 3.16.7-ckt11-1 > Severity: normal > > The 3.16 kernel appears to suppress the system's entropy, by which I mean the > output in /proc/sys/kernel/random/entropy_avail. > > When I upgraded from Debian 7 to 8, in GRUB I was left with the options to boot > the 3.2 and 3.16 kernels using sysvinit and systemd. If I boot in the old way, > 3.2 and sysvinit, depending on what the computer is doing, the output sits > around 3000. > > If I boot with 3.16 and sysvinit or 3.16 and systemd then the output is about > 900-1500. Try as I might by playing a video clip, copying files, surfing the > internet, and/or using the mouse to move a window around the screen, the output > still remains below 1500. > > Should different kernels affect the system's entropy like this? > > Otherwise, haveged, for example, will boost the output in all three cases. > However, whereas the case of 3.2 and sysvinit might jump as high as 3600-3900, > the two cases for 3.16 still hit a ceiling of about 2000. [...] This is not an actionable bug report. Please discuss with upstream. The maintainer for the software RNG is "Theodore Ts'o" <tytso@mit.edu>. Ben. -- Ben Hutchings The most exhausting thing in life is being insincere. - Anne Morrow LindbergAttachment: signature.asc
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