#774138 grub-efi-amd64: Update freeze with kernel oops for EFI (2.02~beta2-{18 -> 19})

Package:
grub-efi-amd64
Source:
grub2
Description:
GRand Unified Bootloader, version 2 (EFI-AMD64 version)
Submitter:
Axel
Date:
2014-12-31 14:15:10 UTC
Severity:
important
#774138#5
Date:
2014-12-29 10:30:17 UTC
From:
To:
Dear Maintainer,

   * What led up to the situation?
     Usual daily upgrade. Including grub-efi-amd64:
        2.02~beta2-18 -> 2.02~beta2-19~i

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
     The effect of the upgrade is a freeze of the entire computer after
     a few tens of seconds when the aforementionned package is
     configured, the process hangs while it's saying "Installing for
     x86_64-efi platform." several kernel oops'es appeared in the
     logs (see below), after 20-30 seconds the system hanged: the
     mouse is unresponsive, I cannot change the tty, caps lock cannot be
     toggled, processes seem still running (continue to hear music) and
     sysreq keys are working, I can safely sync and reboot.

     At this point, when I reboot the package is still not configured,
     thus I can reproduce the bug indefinitely by running:
        sudo dpkg --configure -a

     If I interrupt the configuration with ^C before any kernel oops
     appeared, my computer doesn't crash, but the package remain
     unconfigured.

     I could downgrade to beta2-18 without any problem and everything is
     working as beforehand. I re-upgraded and can still confirm the
     issue remains.

******************************************
The output of dpkg --configure:
Setting up grub-efi-amd64 (2.02~beta2-19) ...
Installing for x86_64-efi platform.
^ last message before freeze

******************************************
The content of kern.log during the upgrade (after the "Installing"
message):

Dec 29 10:56:51 nyx kernel: [  677.520408] general protection fault: 0000 [#1] SMP
Dec 29 10:56:51 nyx kernel: [  677.520425] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c rpcsec_gss_krb5 nfsv4 dns_resolver cpufreq_userspace cpufreq_powersave cpufreq_conservative cpufreq_stats nfsd auth_rpcgss oid_registry nfs_acl nfs lockd fscache sunrpc tun it87 hwmon_vid nls_utf8 nls_cp437 vfat fat loop fuse parport_pc ppdev lp parport snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp intel_rapl arc4 coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel iwldvm aesni_intel aes_x86_64 mac80211 lrw iTCO_wdt snd_hda_intel radeon i915 gf128mul evdev iTCO_vendor_support glue_helper efi_pstore iwlwifi ttm ablk_helper snd_hda_controller drm_kms_helper cryptd snd_hda_codec cfg80211 psmouse pcspkr snd_hwdep drm serio_raw efivars i2c_i801 rfkill mei_me lpc_ich i2c_algo_bit snd_pcm mfd_core mei i2c_core snd_timer snd tpm_infineon tpm_tis soundcore tpm shpchp processor video button battery ext4 crc16 mbcache jbd2 hid_generic usbhid hid dm_mod sg sd_mod crc_t10dif crct10dif_generic ahci libahci crct10dif_pclmul crct10dif_common libata crc32c_intel ehci_pci xhci_hcd ehci_hcd scsi_mod alx mdio e1000e usbcore ptp thermal fan pps_core usb_common thermal_sys
Dec 29 10:56:51 nyx kernel: [  677.520768] CPU: 7 PID: 13729 Comm: efibootmgr Not tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  677.520785] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  677.520802] task: ffff88043cc43530 ti: ffff8800a7cd4000 task.ti: ffff8800a7cd4000
Dec 29 10:56:51 nyx kernel: [  677.520817] RIP: 0010:[<ffffffff8105fafc>]  [<ffffffff8105fafc>] efi_call+0x7c/0x100
Dec 29 10:56:51 nyx kernel: [  677.520835] RSP: 0018:ffff8800a7cd7d70  EFLAGS: 00010002
Dec 29 10:56:51 nyx kernel: [  677.520845] RAX: ffff88043b9d6000 RBX: ffff88043b9d6000 RCX: ffff88043b9d6000
Dec 29 10:56:51 nyx kernel: [  677.520859] RDX: ffff88043b9d6400 RSI: ffff88043b9d6000 RDI: 0f6a210041005400
Dec 29 10:56:51 nyx kernel: [  677.520873] RBP: ffff88043b9d6400 R08: ffff88043b9d6820 R09: ffff88043b9d6410
Dec 29 10:56:51 nyx kernel: [  677.520886] R10: 0000000000001000 R11: 0000000000000246 R12: ffff88043b9d6820
Dec 29 10:56:51 nyx kernel: [  677.520900] R13: ffff88043b9d6410 R14: ffff88043b9d6418 R15: 000000000009a000
Dec 29 10:56:51 nyx kernel: [  677.520913] FS:  00007f74ed9b8700(0000) GS:ffff88044f3c0000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  677.520929] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  677.520939] CR2: 00007f74ece4b110 CR3: 000000000009a000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  677.520953] Stack:
Dec 29 10:56:51 nyx kernel: [  677.520958]  ffff880300000000 01ff8800a7cd7f3c ffff880433223b48 ffff88044e418198
Dec 29 10:56:51 nyx kernel: [  677.520974]  ffff88043b9d6418 ffff88043b9d6000 ffff8800a7cd7e18 0000000080050033
Dec 29 10:56:51 nyx kernel: [  677.520991]  ffffffffffffffff ffffffffffffffff 0000000000000000 000000000000ffff
Dec 29 10:56:51 nyx kernel: [  677.521008] Call Trace:
Dec 29 10:56:51 nyx kernel: [  677.521015]  [<ffffffff8105f12b>] ? virt_efi_get_variable+0x4b/0x60
Dec 29 10:56:51 nyx kernel: [  677.521029]  [<ffffffff813df72f>] ? efivar_entry_get+0x3f/0x70
Dec 29 10:56:51 nyx kernel: [  677.521043]  [<ffffffffa02ee630>] ? efivar_show_raw+0x50/0x360 [efivars]
Dec 29 10:56:51 nyx kernel: [  677.521058]  [<ffffffff81215a74>] ? sysfs_kf_seq_show+0xc4/0x1e0
Dec 29 10:56:51 nyx kernel: [  677.521072]  [<ffffffff811c6ff2>] ? seq_read+0xe2/0x360
Dec 29 10:56:51 nyx kernel: [  677.521088]  [<ffffffff811a5943>] ? vfs_read+0x93/0x170
Dec 29 10:56:51 nyx kernel: [  677.521099]  [<ffffffff811a6572>] ? SyS_read+0x42/0xa0
Dec 29 10:56:51 nyx kernel: [  677.521111]  [<ffffffff8150d32d>] ? system_call_fast_compare_end+0x10/0x15
Dec 29 10:56:51 nyx kernel: [  677.521124] Code: 89 c8 48 89 f1 80 3d 3b dc 7d 00 00 74 1d 4c 89 3d 1a dc 7d 00 41 0f 20 df 4c 89 3d 17 dc 7d 00 4c 8b 3d 18 dc 7d 00 41 0f 22 df <ff> d7 80 3d 13 dc 7d 00 00 74 41 4c 8b 3d fa db 7d 00 41 0f 22
Dec 29 10:56:51 nyx kernel: [  677.521216] RIP  [<ffffffff8105fafc>] efi_call+0x7c/0x100
Dec 29 10:56:51 nyx kernel: [  677.521228]  RSP <ffff8800a7cd7d70>
Dec 29 10:56:51 nyx kernel: [  677.526213] ---[ end trace 4420002643eeb5c3 ]---
Dec 29 10:56:51 nyx kernel: [  698.545598] INFO: rcu_sched detected stalls on CPUs/tasks: { 7} (detected by 5, t=5252 jiffies, g=13601, c=13600, q=1048)
Dec 29 10:56:51 nyx kernel: [  698.545614] sending NMI to all CPUs:
Dec 29 10:56:51 nyx kernel: [  698.545619] NMI backtrace for cpu 7
Dec 29 10:56:51 nyx kernel: [  698.545623] CPU: 7 PID: 13729 Comm: efibootmgr Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.545624] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.545626] task: ffff88043cc43530 ti: ffff8800a7cd4000 task.ti: ffff8800a7cd4000
Dec 29 10:56:51 nyx kernel: [  698.545627] RIP: 0010:[<ffffffff8150ce3c>]  [<ffffffff8150ce3c>] _raw_spin_lock_irqsave+0x3c/0x50
Dec 29 10:56:51 nyx kernel: [  698.545632] RSP: 0018:ffff8800a7cd7ac0  EFLAGS: 00000002
Dec 29 10:56:51 nyx kernel: [  698.545634] RAX: 00000000000002bc RBX: ffffffff81adf880 RCX: 00000000000002bc
Dec 29 10:56:51 nyx kernel: [  698.545635] RDX: 00000000000002bb RSI: 0000000000000002 RDI: ffffffff81adf8a0
Dec 29 10:56:51 nyx kernel: [  698.545636] RBP: ffff8800a7cd7b08 R08: 0000000000000001 R09: 00000000000002a7
Dec 29 10:56:51 nyx kernel: [  698.545637] R10: 0000000000000000 R11: ffff8800a7cd79de R12: ffff8800a7cd7b2c
Dec 29 10:56:51 nyx kernel: [  698.545638] R13: 0000000000000007 R14: 00000000000002a7 R15: ffffffffa0356000
Dec 29 10:56:51 nyx kernel: [  698.545640] FS:  00007f74ed9b8700(0000) GS:ffff88044f3c0000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545641] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.545642] CR2: 00007f74ece4b110 CR3: 000000000009a000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.545643] Stack:
Dec 29 10:56:51 nyx kernel: [  698.545644]  ffffffff813df261 ffff8800a7cd7b20 4ddcbe2ecfc8fc79 a098e2bf989ff097
Dec 29 10:56:51 nyx kernel: [  698.545647]  0000000000000001 0000000000000002 ffff8800a7cd7c40 ffff88043cb3b000
Dec 29 10:56:51 nyx kernel: [  698.545649]  ffffffffa0356000 ffff8800a7cd7bf8 ffffffffa0354475 ffff88043cb3b000
Dec 29 10:56:51 nyx kernel: [  698.545651] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.545655]  [<ffffffff813df261>] ? efivar_entry_set_safe+0x51/0x140
Dec 29 10:56:51 nyx kernel: [  698.545669]  [<ffffffffa0354475>] ? efi_pstore_write+0xd5/0x120 [efi_pstore]
Dec 29 10:56:51 nyx kernel: [  698.545673]  [<ffffffff812c3f6a>] ? deflate_slow+0x3ca/0x430
Dec 29 10:56:51 nyx kernel: [  698.545675]  [<ffffffff812c3b78>] ? flush_pending+0x38/0x60
Dec 29 10:56:51 nyx kernel: [  698.545678]  [<ffffffff8121c956>] ? pstore_dump+0x216/0x440
Dec 29 10:56:51 nyx kernel: [  698.545683]  [<ffffffff81504a71>] ? printk+0x54/0x56
Dec 29 10:56:51 nyx kernel: [  698.545686]  [<ffffffff810b7e6a>] ? kmsg_dump+0x9a/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545690]  [<ffffffff81016382>] ? oops_end+0x72/0xe0
Dec 29 10:56:51 nyx kernel: [  698.545693]  [<ffffffff8150f308>] ? general_protection+0x28/0x30
Dec 29 10:56:51 nyx kernel: [  698.545695]  [<ffffffff8105fafc>] ? efi_call+0x7c/0x100
Dec 29 10:56:51 nyx kernel: [  698.545698]  [<ffffffff8105f12b>] ? virt_efi_get_variable+0x4b/0x60
Dec 29 10:56:51 nyx kernel: [  698.545700]  [<ffffffff813df72f>] ? efivar_entry_get+0x3f/0x70
Dec 29 10:56:51 nyx kernel: [  698.545705]  [<ffffffffa02ee630>] ? efivar_show_raw+0x50/0x360 [efivars]
Dec 29 10:56:51 nyx kernel: [  698.545709]  [<ffffffff81215a74>] ? sysfs_kf_seq_show+0xc4/0x1e0
Dec 29 10:56:51 nyx kernel: [  698.545712]  [<ffffffff811c6ff2>] ? seq_read+0xe2/0x360
Dec 29 10:56:51 nyx kernel: [  698.545715]  [<ffffffff811a5943>] ? vfs_read+0x93/0x170
Dec 29 10:56:51 nyx kernel: [  698.545717]  [<ffffffff811a6572>] ? SyS_read+0x42/0xa0
Dec 29 10:56:51 nyx kernel: [  698.545719]  [<ffffffff8150d32d>] ? system_call_fast_compare_end+0x10/0x15
Dec 29 10:56:51 nyx kernel: [  698.545720] Code: 0f 1f 44 00 00 ba 00 00 01 00 f0 0f c1 17 89 d1 c1 e9 10 66 39 d1 89 c8 75 04 48 89 f0 c3 0f b7 17 66 39 d1 74 f4 f3 90 0f b7 17 <66> 39 d0 75 f6 eb e8 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f
Dec 29 10:56:51 nyx kernel: [  698.545743] NMI backtrace for cpu 5
Dec 29 10:56:51 nyx kernel: [  698.545745] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.545746] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.545747] task: ffff88043e562110 ti: ffff88043e578000 task.ti: ffff88043e578000
Dec 29 10:56:51 nyx kernel: [  698.545749] RIP: 0010:[<ffffffff812b64d0>]  [<ffffffff812b64d0>] __bitmap_andnot+0x0/0x50
Dec 29 10:56:51 nyx kernel: [  698.545753] RSP: 0018:ffff88044f343df8  EFLAGS: 00000046
Dec 29 10:56:51 nyx kernel: [  698.545754] RAX: 0000000000000000 RBX: ffff88044f34ce40 RCX: 0000000000000200
Dec 29 10:56:51 nyx kernel: [  698.545755] RDX: ffff88044f20ce80 RSI: ffff88044f34ce40 RDI: ffff88044f34ce40
Dec 29 10:56:51 nyx kernel: [  698.545756] RBP: ffff88044f20ce80 R08: ffff88044f34ce48 R09: 0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545757] R10: 0000000000000525 R11: ffff88044f343b96 R12: 000000000000cec0
Dec 29 10:56:51 nyx kernel: [  698.545759] R13: 0000000000080000 R14: 00000000000000ff R15: 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.545760] FS:  0000000000000000(0000) GS:ffff88044f340000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545761] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.545763] CR2: 00007fffe90e1fe8 CR3: 0000000001a13000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.545763] Stack:
Dec 29 10:56:51 nyx kernel: [  698.545764]  ffffffff8104a738 0000000000000010 000000000000ce80 0000000200000005
Dec 29 10:56:51 nyx kernel: [  698.545767]  0000000000000086 ffff88044f34d660 ffffffff818535c0 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.545769]  ffffffff818e1940 0000000000000418 ffffffff818535c0 ffffffff810467d3
Dec 29 10:56:51 nyx kernel: [  698.545771] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.545772]  <IRQ>
Dec 29 10:56:51 nyx kernel: [  698.545773]  [<ffffffff8104a738>] ? __x2apic_send_IPI_mask+0x178/0x1a0
Dec 29 10:56:51 nyx kernel: [  698.545779]  [<ffffffff810467d3>] ? arch_trigger_all_cpu_backtrace+0xc3/0x140
Dec 29 10:56:51 nyx kernel: [  698.545783]  [<ffffffff810c346d>] ? rcu_check_callbacks+0x60d/0x630
Dec 29 10:56:51 nyx kernel: [  698.545785]  [<ffffffff810cdc30>] ? tick_sched_handle.isra.16+0x60/0x60
Dec 29 10:56:51 nyx kernel: [  698.545789]  [<ffffffff81072b00>] ? update_process_times+0x40/0x70
Dec 29 10:56:51 nyx kernel: [  698.545791]  [<ffffffff810cdbf0>] ? tick_sched_handle.isra.16+0x20/0x60
Dec 29 10:56:51 nyx kernel: [  698.545793]  [<ffffffff810cdc6c>] ? tick_sched_timer+0x3c/0x60
Dec 29 10:56:51 nyx kernel: [  698.545796]  [<ffffffff81089007>] ? __run_hrtimer+0x67/0x1c0
Dec 29 10:56:51 nyx kernel: [  698.545798]  [<ffffffff810893b9>] ? hrtimer_interrupt+0xe9/0x220
Dec 29 10:56:51 nyx kernel: [  698.545801]  [<ffffffff815101cb>] ? smp_apic_timer_interrupt+0x3b/0x60
Dec 29 10:56:51 nyx kernel: [  698.545803]  [<ffffffff8150e2bd>] ? apic_timer_interrupt+0x6d/0x80
Dec 29 10:56:51 nyx kernel: [  698.545804]  <EOI>
Dec 29 10:56:51 nyx kernel: [  698.545805]  [<ffffffff81088cad>] ? __hrtimer_start_range_ns+0x1cd/0x390
Dec 29 10:56:51 nyx kernel: [  698.545810]  [<ffffffff813da452>] ? cpuidle_enter_state+0x52/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545812]  [<ffffffff813da448>] ? cpuidle_enter_state+0x48/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545815]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.545817]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.545818] Code: 48 83 c1 3f 48 c1 e9 06 85 c9 41 89 c8 7e 19 0f 1f 40 00 48 8b 0c c2 48 33 0c c6 48 89 0c c7 48 83 c0 01 41 39 c0 7f eb f3 c3 90 <48> 63 c9 48 83 c1 3f 48 c1 e9 06 85 c9 41 89 c9 7e 32 31 c9 45
Dec 29 10:56:51 nyx kernel: [  698.545840] NMI backtrace for cpu 4
Dec 29 10:56:51 nyx kernel: [  698.545843] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.545845] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.545846] task: ffff88043e562a60 ti: ffff88043e574000 task.ti: ffff88043e574000
Dec 29 10:56:51 nyx kernel: [  698.545847] RIP: 0010:[<ffffffff810c54ed>]  [<ffffffff810c54ed>] ktime_get+0xd/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545851] RSP: 0018:ffff88043e577e98  EFLAGS: 00000092
Dec 29 10:56:51 nyx kernel: [  698.545853] RAX: 0000000000000000 RBX: ffff88044f319600 RCX: ffff88043e577fd8
Dec 29 10:56:51 nyx kernel: [  698.545854] RDX: 0000000000000000 RSI: ffff88043e577fd8 RDI: 0000000000000004
Dec 29 10:56:51 nyx kernel: [  698.545855] RBP: ffff88043e577ed0 R08: 00000000ffffffff R09: 0000000000001f7e
Dec 29 10:56:51 nyx kernel: [  698.545856] R10: 000000000001ee93 R11: 0000000000000008 R12: 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.545857] R13: 000000a2adc450cf R14: 0000000000000005 R15: ffffffff8189e2f0
Dec 29 10:56:51 nyx kernel: [  698.545859] FS:  0000000000000000(0000) GS:ffff88044f300000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545860] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.545861] CR2: 00007f3e276bea30 CR3: 0000000001a13000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.545862] Stack:
Dec 29 10:56:51 nyx kernel: [  698.545863]  0000000000000005 ffffffff813da448 ffffffff818e1900 ffff88043e574000
Dec 29 10:56:51 nyx kernel: [  698.545865]  ffffffff8189e120 0000000000000005 0000000000000000 ffff88044f319600
Dec 29 10:56:51 nyx kernel: [  698.545867]  ffffffff810a5e78 ffff88043e574000 00ff880400000004 ffff88043e574000
Dec 29 10:56:51 nyx kernel: [  698.545869] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.545872]  [<ffffffff813da448>] ? cpuidle_enter_state+0x48/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545875]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.545877]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.545878] Code: 74 24 08 e8 36 fe ff ff 48 89 df e8 8e 9a 00 00 48 83 c4 10 5b 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 41 54 8b 05 d7 c5 81 00 <55> 85 c0 53 75 7b 44 8b 25 ee 83 9c 00 41 f6 c4 01 0f 85 8c 00
Dec 29 10:56:51 nyx kernel: [  698.545900] NMI backtrace for cpu 3
Dec 29 10:56:51 nyx kernel: [  698.545902] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.545903] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.545905] task: ffff88043e5633b0 ti: ffff88043e56c000 task.ti: ffff88043e56c000
Dec 29 10:56:51 nyx kernel: [  698.545906] RIP: 0010:[<ffffffff81319a92>]  [<ffffffff81319a92>] intel_idle+0xc2/0x140
Dec 29 10:56:51 nyx kernel: [  698.545911] RSP: 0018:ffff88043e56fe78  EFLAGS: 00000046
Dec 29 10:56:51 nyx kernel: [  698.545914] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000001
Dec 29 10:56:51 nyx kernel: [  698.545919] RDX: 0000000000000000 RSI: ffff88043e56ffd8 RDI: 0000000000000003
Dec 29 10:56:51 nyx kernel: [  698.545923] RBP: 0000000000000001 R08: 00000000ffffffff R09: 000000000000084c
Dec 29 10:56:51 nyx kernel: [  698.545928] R10: 0000000000000068 R11: 0000000000000008 R12: 0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545932] R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8189e190
Dec 29 10:56:51 nyx kernel: [  698.545937] FS:  0000000000000000(0000) GS:ffff88044f2c0000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.545941] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.545946] CR2: 00007fbbeddee000 CR3: 000000043bd27000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.545950] Stack:
Dec 29 10:56:51 nyx kernel: [  698.545954]  000000038101b455 ffff88044f2d9600 ffff88043e56fed0 ffffffff8189e120
Dec 29 10:56:51 nyx kernel: [  698.545970]  000000a28e682004 ffffffff813da440 ffffffff818e1900 ffff88043e56c000
Dec 29 10:56:51 nyx kernel: [  698.545985]  ffffffff8189e120 0000000000000001 0000000000000000 ffff88044f2d9600
Dec 29 10:56:51 nyx kernel: [  698.545988] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.545990]  [<ffffffff813da440>] ? cpuidle_enter_state+0x40/0xc0
Dec 29 10:56:51 nyx kernel: [  698.545992]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.545994]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.545995] Code: 31 d2 65 48 8b 34 25 88 b8 00 00 48 89 d1 48 8d 86 38 c0 ff ff 0f 01 c8 48 8b 86 38 c0 ff ff a8 08 75 08 b1 01 4c 89 e0 0f 01 c9 <65> 48 8b 0c 25 88 b8 00 00 f0 80 a1 3a c0 ff ff df 0f ae f0 48
Dec 29 10:56:51 nyx kernel: [  698.546016] NMI backtrace for cpu 0
Dec 29 10:56:51 nyx kernel: [  698.546018] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.546020] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.546021] task: ffffffff8181a460 ti: ffffffff81800000 task.ti: ffffffff81800000
Dec 29 10:56:51 nyx kernel: [  698.546022] RIP: 0010:[<ffffffff810c54ed>]  [<ffffffff810c54ed>] ktime_get+0xd/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546025] RSP: 0018:ffffffff81803ec8  EFLAGS: 00000092
Dec 29 10:56:51 nyx kernel: [  698.546027] RAX: 0000000000000000 RBX: ffff88044f219600 RCX: ffffffff81803fd8
Dec 29 10:56:51 nyx kernel: [  698.546028] RDX: 0000000000000000 RSI: ffffffff81803fd8 RDI: 0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.546029] RBP: ffffffff81803f00 R08: 0000000000003dd1 R09: 0000000000000008
Dec 29 10:56:51 nyx kernel: [  698.546030] R10: 0000000000005d26 R11: 0000000000000002 R12: 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.546031] R13: 000000a2adc4540d R14: 0000000000000005 R15: ffffffff8189e2f0
Dec 29 10:56:51 nyx kernel: [  698.546033] FS:  0000000000000000(0000) GS:ffff88044f200000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.546034] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.546035] CR2: 00007f3e0cd4c000 CR3: 0000000001a13000 CR4: 00000000001407f0
Dec 29 10:56:51 nyx kernel: [  698.546036] Stack:
Dec 29 10:56:51 nyx kernel: [  698.546037]  0000000000000005 ffffffff813da448 ffffffff818e1900 ffffffff81800000
Dec 29 10:56:51 nyx kernel: [  698.546039]  ffffffff8189e120 0000000000000005 ffffffff81a25000 ffff88044f219600
Dec 29 10:56:51 nyx kernel: [  698.546041]  ffffffff810a5e78 ffffffff81800000 0000000000000000 ffffffff81800000
Dec 29 10:56:51 nyx kernel: [  698.546043] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.546046]  [<ffffffff813da448>] ? cpuidle_enter_state+0x48/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546048]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.546051]  [<ffffffff81902071>] ? start_kernel+0x492/0x49d
Dec 29 10:56:51 nyx kernel: [  698.546053]  [<ffffffff81901a04>] ? set_init_arg+0x4e/0x4e
Dec 29 10:56:51 nyx kernel: [  698.546056]  [<ffffffff81901120>] ? early_idt_handlers+0x120/0x120
Dec 29 10:56:51 nyx kernel: [  698.546058]  [<ffffffff8190171f>] ? x86_64_start_kernel+0x14d/0x15c
Dec 29 10:56:51 nyx kernel: [  698.546059] Code: 74 24 08 e8 36 fe ff ff 48 89 df e8 8e 9a 00 00 48 83 c4 10 5b 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 41 54 8b 05 d7 c5 81 00 <55> 85 c0 53 75 7b 44 8b 25 ee 83 9c 00 41 f6 c4 01 0f 85 8c 00
Dec 29 10:56:51 nyx kernel: [  698.546132] NMI backtrace for cpu 1
Dec 29 10:56:51 nyx kernel: [  698.546134] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.546135] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.546136] task: ffff88043e558a20 ti: ffff88043e564000 task.ti: ffff88043e564000
Dec 29 10:56:51 nyx kernel: [  698.546137] RIP: 0010:[<ffffffff81319a92>]  [<ffffffff81319a92>] intel_idle+0xc2/0x140
Dec 29 10:56:51 nyx kernel: [  698.546140] RSP: 0018:ffff88043e567e78  EFLAGS: 00000046
Dec 29 10:56:51 nyx kernel: [  698.546141] RAX: 0000000000000010 RBX: 0000000000000004 RCX: 0000000000000001
Dec 29 10:56:51 nyx kernel: [  698.546142] RDX: 0000000000000000 RSI: ffff88043e567fd8 RDI: 0000000001a13000
Dec 29 10:56:51 nyx kernel: [  698.546143] RBP: 0000000000000003 R08: 00000000000001ae R09: 0000000000000018
Dec 29 10:56:51 nyx kernel: [  698.546144] R10: 0000000000000890 R11: 0000000000000006 R12: 0000000000000010
Dec 29 10:56:51 nyx kernel: [  698.546145] R13: 0000000000000002 R14: 0000000000000003 R15: ffffffff8189e240
Dec 29 10:56:51 nyx kernel: [  698.546147] FS:  0000000000000000(0000) GS:ffff88044f240000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.546148] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.546149] CR2: 00007f3e26f7efb0 CR3: 0000000001a13000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.546150] Stack:
Dec 29 10:56:51 nyx kernel: [  698.546151]  000000018101b455 ffff88044f259600 ffff88043e567ed0 ffffffff8189e120
Dec 29 10:56:51 nyx kernel: [  698.546153]  000000a2aeb827f2 ffffffff813da440 ffffffff818e1900 ffff88043e564000
Dec 29 10:56:51 nyx kernel: [  698.546155]  ffffffff8189e120 0000000000000003 0000000000000000 ffff88044f259600
Dec 29 10:56:51 nyx kernel: [  698.546157] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.546159]  [<ffffffff813da440>] ? cpuidle_enter_state+0x40/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546161]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.546162]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.546163] Code: 31 d2 65 48 8b 34 25 88 b8 00 00 48 89 d1 48 8d 86 38 c0 ff ff 0f 01 c8 48 8b 86 38 c0 ff ff a8 08 75 08 b1 01 4c 89 e0 0f 01 c9 <65> 48 8b 0c 25 88 b8 00 00 f0 80 a1 3a c0 ff ff df 0f ae f0 48
Dec 29 10:56:51 nyx kernel: [  698.546202] NMI backtrace for cpu 6
Dec 29 10:56:51 nyx kernel: [  698.546205] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.546206] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.546207] task: ffff88043e57d3f0 ti: ffff88043e580000 task.ti: ffff88043e580000
Dec 29 10:56:51 nyx kernel: [  698.546209] RIP: 0010:[<ffffffff810c54ed>]  [<ffffffff810c54ed>] ktime_get+0xd/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546212] RSP: 0018:ffff88043e583e98  EFLAGS: 00000092
Dec 29 10:56:51 nyx kernel: [  698.546214] RAX: 0000000000000000 RBX: ffff88044f399600 RCX: ffff88043e583fd8
Dec 29 10:56:51 nyx kernel: [  698.546217] RDX: 0000000000000000 RSI: ffff88043e583fd8 RDI: 0000000000000006
Dec 29 10:56:51 nyx kernel: [  698.546222] RBP: ffff88043e583ed0 R08: 00000000ffffffff R09: 0000000000001f48
Dec 29 10:56:51 nyx kernel: [  698.546225] R10: 000000000001ee90 R11: 0000000000000008 R12: 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.546226] R13: 000000a2adc450d2 R14: 0000000000000005 R15: ffffffff8189e2f0
Dec 29 10:56:51 nyx kernel: [  698.546228] FS:  0000000000000000(0000) GS:ffff88044f380000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.546229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.546230] CR2: 00007fbd47cce889 CR3: 0000000001a13000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.546231] Stack:
Dec 29 10:56:51 nyx kernel: [  698.546234]  0000000000000005 ffffffff813da448 ffffffff818e1900 ffff88043e580000
Dec 29 10:56:51 nyx kernel: [  698.546239]  ffffffff8189e120 0000000000000005 0000000000000000 ffff88044f399600
Dec 29 10:56:51 nyx kernel: [  698.546241]  ffffffff810a5e78 ffff88043e580000 00ff880400000006 ffff88043e580000
Dec 29 10:56:51 nyx kernel: [  698.546243] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.546249]  [<ffffffff813da448>] ? cpuidle_enter_state+0x48/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546251]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.546253]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.546256] Code: 74 24 08 e8 36 fe ff ff 48 89 df e8 8e 9a 00 00 48 83 c4 10 5b 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 41 54 8b 05 d7 c5 81 00 <55> 85 c0 53 75 7b 44 8b 25 ee 83 9c 00 41 f6 c4 01 0f 85 8c 00
Dec 29 10:56:51 nyx kernel: [  698.546279] NMI backtrace for cpu 2
Dec 29 10:56:51 nyx kernel: [  698.546281] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G      D       3.16.0-4-amd64 #1 Debian 3.16.7-ckt2-1
Dec 29 10:56:51 nyx kernel: [  698.546282] Hardware name: Gigabyte Technology Co., Ltd. Z87N-WIFI/Z87N-WIFI, BIOS F4 08/03/2013
Dec 29 10:56:51 nyx kernel: [  698.546283] task: ffff88043e5580d0 ti: ffff88043e568000 task.ti: ffff88043e568000
Dec 29 10:56:51 nyx kernel: [  698.546284] RIP: 0010:[<ffffffff810c54ed>]  [<ffffffff810c54ed>] ktime_get+0xd/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546287] RSP: 0018:ffff88043e56be98  EFLAGS: 00000092
Dec 29 10:56:51 nyx kernel: [  698.546291] RAX: 0000000000000000 RBX: ffff88044f299600 RCX: ffff88043e56bfd8
Dec 29 10:56:51 nyx kernel: [  698.546294] RDX: 0000000000000000 RSI: ffff88043e56bfd8 RDI: 0000000000000002
Dec 29 10:56:51 nyx kernel: [  698.546296] RBP: ffff88043e56bed0 R08: 00000000ffffffff R09: 0000000000001e3a
Dec 29 10:56:51 nyx kernel: [  698.546297] R10: 000000000001ee90 R11: 0000000000000008 R12: 0000000000000005
Dec 29 10:56:51 nyx kernel: [  698.546298] R13: 000000a2adc45205 R14: 0000000000000005 R15: ffffffff8189e2f0
Dec 29 10:56:51 nyx kernel: [  698.546299] FS:  0000000000000000(0000) GS:ffff88044f280000(0000) knlGS:0000000000000000
Dec 29 10:56:51 nyx kernel: [  698.546300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 29 10:56:51 nyx kernel: [  698.546301] CR2: 00007f3e278ebf90 CR3: 0000000001a13000 CR4: 00000000001407e0
Dec 29 10:56:51 nyx kernel: [  698.546302] Stack:
Dec 29 10:56:51 nyx kernel: [  698.546303]  0000000000000005 ffffffff813da448 ffffffff818e1900 ffff88043e568000
Dec 29 10:56:51 nyx kernel: [  698.546305]  ffffffff8189e120 0000000000000005 0000000000000000 ffff88044f299600
Dec 29 10:56:51 nyx kernel: [  698.546307]  ffffffff810a5e78 ffff88043e568000 00ff880400000002 ffff88043e568000
Dec 29 10:56:51 nyx kernel: [  698.546309] Call Trace:
Dec 29 10:56:51 nyx kernel: [  698.546312]  [<ffffffff813da448>] ? cpuidle_enter_state+0x48/0xc0
Dec 29 10:56:51 nyx kernel: [  698.546318]  [<ffffffff810a5e78>] ? cpu_startup_entry+0x2f8/0x400
Dec 29 10:56:51 nyx kernel: [  698.546322]  [<ffffffff81042acf>] ? start_secondary+0x20f/0x2d0
Dec 29 10:56:51 nyx kernel: [  698.546324] Code: 74 24 08 e8 36 fe ff ff 48 89 df e8 8e 9a 00 00 48 83 c4 10 5b 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 41 54 8b 05 d7 c5 81 00 <55> 85 c0 53 75 7b 44 8b 25 ee 83 9c 00 41 f6 c4 01 0f 85 8c 00

******************************************
#774138#10
Date:
2014-12-29 10:50:49 UTC
From:
To:
During this upgrade, several other packages may be of interest, because
some are related to EFI handling:

    efibootmgr:amd64 (0.9.0-2, 0.11.0-3) << especially this one
    grub2-common:amd64 (2.02~beta2-18, 2.02~beta2-19)
    grub-common:amd64 (2.02~beta2-18, 2.02~beta2-19)
    grub-efi:amd64 (2.02~beta2-18, 2.02~beta2-19)
    grub-efi-amd64:amd64 (2.02~beta2-18, 2.02~beta2-19)
    grub-efi-amd64-bin:amd64 (2.02~beta2-18, 2.02~beta2-19)
    libefivar0:amd64 (0.15-2, 0.15-3) << and this one

The bug may be related to the use of new features in these new versions,
probably in libefivar0, but this is only my guess.
#774138#15
Date:
2014-12-29 14:29:09 UTC
From:
To:
The functional changes between -18 and -19 were pretty minor, just:
+  * Handle case insensitivity of VFAT filesystem on /boot/EFI when installing
+    extra cpoy of grub-efi to the removable media path
+    /boot/efi/EFI/BOOT/BOOT$ARCH.EFI (Closes: #773092)
+  * Make the force_efi_extra_removable debconf prompt only show up when
+    configuring grub-*efi*. Closes: #773004
plus a boatload of translation updates.

The second on is obviously not the problem and since your debconf data
contains :
  grub2/force_efi_extra_removable: false
I think none of the code involved in the first case will be getting run
for you. So I think you are probably correct to consider other things
which have been upgraded as in your follow up.

Could you try running "grub-install -v" please.

Please could you also try downgrading this and some of the other
packages which you think might be at fault one at a time to see if you
can nail the culprit.

Another possibility is that the firmware is a bit b0rked wrt efivars
handling (I've heard some nasty things about some firmwares in this
regard) and its just a coincidence that this was the upgrade which
triggered it.

Ian.
#774138#20
Date:
2014-12-30 20:32:50 UTC
From:
To:
First, I would like to thank you for your help.

Hum yes, that is a typo.

The only differences between the two versions are these:

--- grub-install-18-verbose	2014-12-30 20:54:29.311280172 +0100
+++ grub-install-19-verbose	2014-12-30 20:57:38.727276827 +0100
@@ -4260,7 +4260,7 @@
 grub-install: info: reading /usr/lib/grub/x86_64-efi/fshelp.mod.
 grub-install: info: reading /usr/lib/grub/x86_64-efi/ext2.mod.
 grub-install: info: reading /usr/lib/grub/x86_64-efi/part_gpt.mod.
-grub-install: info: kernel_img=0x2068d80, kernel_size=0x18400.
+grub-install: info: kernel_img=0x2117d80, kernel_size=0x18400.
 grub-install: info: the core size is 0x1c1e8.
 grub-install: info: writing 0x1d400 bytes.
 grub-install: info: grub-mkimage --directory '/usr/lib/grub/x86_64-efi' --prefix '' --output '/boot/grub/x86_64-efi/grub.efi' --format 'x86_64-efi' --compression 'auto'  'ext2' 'part_gpt'
@@ -7503,7 +7503,7 @@
 grub-install: info: reading /usr/lib/grub/x86_64-efi/fshelp.mod.
 grub-install: info: reading /usr/lib/grub/x86_64-efi/ext2.mod.
 grub-install: info: reading /usr/lib/grub/x86_64-efi/part_gpt.mod.
-grub-install: info: kernel_img=0x2068d80, kernel_size=0x18400.
+grub-install: info: kernel_img=0x2117d80, kernel_size=0x18400.
 grub-install: info: the core size is 0x1c1d8.
 grub-install: info: writing 0x1d400 bytes.
 grub-install: info: copying `/boot/grub/x86_64-efi/core.efi' -> `/boot/efi/EFI/debian/grubx64.efi'.
@@ -7511,7 +7511,6 @@
 grub-install: info: executing efibootmgr --version </dev/null >/dev/null.
 grub-install: info: executing modprobe -q efivars.
 grub-install: info: executing efibootmgr -c -d /dev/sda -p 1 -w -L debian -l \EFI\debian\grubx64.efi.
-
-Could not prepare boot variable: No such file or directory
-
+efibootmgr: Could not set variable Boot0000: No such file or directory
+efibootmgr: Could not prepare boot variable: No such file or directory
 Installation finished. No error reported.

So, I tried many things and found that indeed the new version is not the
source of the problem. In fact the system before the upgrade exhibits the
same problem under a simple condition: when the system was resumed from
disk. I found that everything is fine when it is freshly booted,
whichever the version -18 or -19.

I upgraded all the package again and reproduced my problem with -19.
I have the kernel log when it crashed but not the log of grub-install
because it froze immediately this time, I couldn't save it. I have a
photo of the last lines nonetheless, that may help.

Moreover it has been since a few months that efibootmgr didn't work
properly for my motherboard. I noticed that since it broke, efibootmgr
deletes every boot entries, moreover its own is not visible afterward. I
had to place the grub binary myself into the generic location
"/boot/efi/EFI/BOOT/BOOTx64.efi" to make my system boots, and it works.

I own a thinkpad x220 and indeed I don't suffer these problems. That
means either one of these: as you said the firmware is bugged or the
support for my MB is not fully complete.

I am no expert on the matter, if you have any clue whether I should
report it to an other package like efibootmgr or how can I find more
informations?
#774138#25
Date:
2014-12-31 10:56:46 UTC
From:
To:
Was this in the state where things crashed or the "working" state (but
with the second issue you mentioned occurring)?

[...]

I think there is a pretty good chance that this is therefore a firmware
issue. I'd recommend the first thing to try would be to see if an
updated firmware is available for your system and if so then install it.

Your kernel stack trace shows that the CPU has tried to execute code
from a region of RAM which has been marked non-executable when calling
into the firmware. I'm not familiar enough with EFI to know if
responsibility for this lies with the firmware or the kernel and have a
feeling it might be the two in concert.

You might find that adding "noexec=off" to your kernel command line
worksaround this issue.

Sounds like a firmware issue to me, if an upgrade doesn't help I'd
recommend to start by reporting against efibootmgr.

Once you've updated the firmware I think I'd suggest starting by
reassigning this crash issue to the Linux package (I can help with the
mechanics of that if you need). The thing about the delete boot entries
probably ought to start with efibootmgr (I could clone this report, but
I think a fresh one dedicated to that issue would be better).

Ian.
#774138#30
Date:
2014-12-31 11:08:50 UTC
From:
To:
This is the diff between -18 and -19 when nothing crash in both case.
This shows there is a visible change for efibootmgr.

You mean the motherboard firmware right? There seem to be only minor
changes according to the changelog of Gigabyte on their website. I'm
always worried about upgrading firmwares, I could give a try though as
a last resort.
normal use? I guess so.

I thought the issue may be related so I hope I didn't confuse you more
with this information.

Thanks for the help. Let's report it to efibootmgr after I tried the two
things you mentionned above.

Thanks!
#774138#35
Date:
2014-12-31 14:12:46 UTC
From:
To:
It's not really dangerous as such, there would be a slight decrease in
resistance to certain classes of security vulnerability is all.

Ian.