Created attachment 945345 [details] kernel 3.17.0 log Description of problem: See kernel panic after network is down: [38842.657051] ------------[ cut here ]------------ [38842.657059] WARNING: CPU: 0 PID: 2625 at lib/dma-debug.c:593 debug_dma_assert_idle+0x1a4/0x220() [38842.657061] i915 0000:00:02.0: DMA-API: cpu touching an active dma mapped cacheline [cln=0x000000001e7f8280] [38842.657062] Modules linked in: rfcomm nls_utf8 isofs fuse xt_CHECKSUM ipt_MASQUERADE tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT xt_conntrack cfg80211 ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep hid_logitech_dj btusb bluetooth btrfs iTCO_wdt iTCO_vendor_support rfkill ppdev xor vfat fat raid6_pq x86_pkg_temp_thermal coretemp uas kvm_intel kvm crct10dif_pclmul crc32_pclmul usb_storage crc32c_intel snd_hda_codec_realtek snd_hda_codec_ca0132 ghash_clmulni_intel snd_hda_codec_generic snd_hda_codec_hdmi [38842.657113] snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep serio_raw snd_seq snd_seq_device snd_pcm snd_timer mei_me snd mei lpc_ich soundcore i2c_i801 shpchp mfd_core parport_pc parport binfmt_misc i915 i2c_algo_bit drm_kms_helper drm r8169 mii video [38842.657135] CPU: 0 PID: 2625 Comm: sandbox_ipc_thr Not tainted 3.17.0-300.fc21.x86_64+debug #1 [38842.657137] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [38842.657140] 0000000000000000 0000000069068985 ffff88079c787c38 ffffffff81830069 [38842.657144] ffff88079c787c80 ffff88079c787c70 ffffffff810a325d ffff8807f2dda270 [38842.657147] ffff8807eeea9a80 0000119be0852f30 ffffea001e06ab80 ffff88079c764820 [38842.657150] Call Trace: [38842.657156] [<ffffffff81830069>] dump_stack+0x4d/0x66 [38842.657160] [<ffffffff810a325d>] warn_slowpath_common+0x7d/0xa0 [38842.657163] [<ffffffff810a32dc>] warn_slowpath_fmt+0x5c/0x80 [38842.657167] [<ffffffff810ff45d>] ? trace_hardirqs_on+0xd/0x10 [38842.657176] [<ffffffff8142dea4>] debug_dma_assert_idle+0x1a4/0x220 [38842.657181] [<ffffffff812065e4>] do_wp_page+0xf4/0x9a0 [38842.657184] [<ffffffff81208fbd>] ? handle_mm_fault+0x31d/0x1020 [38842.657186] [<ffffffff8120958c>] handle_mm_fault+0x8ec/0x1020 [38842.657190] [<ffffffff81068fd9>] __do_page_fault+0x239/0x620 [38842.657194] [<ffffffff810deb05>] ? local_clock+0x25/0x30 [38842.657197] [<ffffffff8183956c>] ? _raw_spin_unlock_irq+0x2c/0x40 [38842.657200] [<ffffffff810ff3ad>] ? trace_hardirqs_on_caller+0x15d/0x200 [38842.657202] [<ffffffff810ff45d>] ? trace_hardirqs_on+0xd/0x10 [38842.657204] [<ffffffff8183956c>] ? _raw_spin_unlock_irq+0x2c/0x40 [38842.657207] [<ffffffff810d0580>] ? finish_task_switch+0x80/0x180 [38842.657209] [<ffffffff810d0542>] ? finish_task_switch+0x42/0x180 [38842.657212] [<ffffffff810693f1>] do_page_fault+0x31/0x70 [38842.657214] [<ffffffff8183c428>] page_fault+0x28/0x30 [38842.657216] ---[ end trace d4b66c904a846a6f ]--- [38842.657217] Mapped at: [38842.657218] [<ffffffff8142c472>] debug_dma_map_sg+0x52/0x190 [38842.657221] [<ffffffffa00c771b>] i915_gem_gtt_prepare_object+0xdb/0x110 [i915] [38842.657238] [<ffffffffa00ceccb>] i915_gem_object_pin+0x4fb/0x7a0 [i915] [38842.657249] [<ffffffffa00c1a35>] i915_gem_execbuffer_reserve_vma.isra.18+0x85/0x130 [i915] [38842.657258] [<ffffffffa00c1e02>] i915_gem_execbuffer_reserve+0x322/0x350 [i915] [39713.665743] SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs [40412.010624] ------------[ cut here ]------------ [40412.010635] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0x258/0x270() [40412.010637] NETDEV WATCHDOG: enp2s0 (r8169): transmit queue 0 timed out [40412.010638] Modules linked in: rfcomm nls_utf8 isofs fuse xt_CHECKSUM ipt_MASQUERADE tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT xt_conntrack cfg80211 ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep hid_logitech_dj btusb bluetooth btrfs iTCO_wdt iTCO_vendor_support rfkill ppdev xor vfat fat raid6_pq x86_pkg_temp_thermal coretemp uas kvm_intel kvm crct10dif_pclmul crc32_pclmul usb_storage crc32c_intel snd_hda_codec_realtek snd_hda_codec_ca0132 ghash_clmulni_intel snd_hda_codec_generic snd_hda_codec_hdmi [40412.010663] snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep serio_raw snd_seq snd_seq_device snd_pcm snd_timer mei_me snd mei lpc_ich soundcore i2c_i801 shpchp mfd_core parport_pc parport binfmt_misc i915 i2c_algo_bit drm_kms_helper drm r8169 mii video [40412.010677] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.17.0-300.fc21.x86_64+debug #1 [40412.010679] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [40412.010680] 0000000000000000 9c0f28ed8b4167d3 ffff8807fec03d48 ffffffff81830069 [40412.010683] ffff8807fec03d90 ffff8807fec03d80 ffffffff810a325d 0000000000000000 [40412.010685] ffff8807ed0ddc80 0000000000000000 ffff8807f061e000 0000000000000001 [40412.010687] Call Trace: [40412.010689] <IRQ> [<ffffffff81830069>] dump_stack+0x4d/0x66 [40412.010697] [<ffffffff810a325d>] warn_slowpath_common+0x7d/0xa0 [40412.010699] [<ffffffff810a32dc>] warn_slowpath_fmt+0x5c/0x80 [40412.010706] [<ffffffff8170dff8>] dev_watchdog+0x258/0x270 [40412.010709] [<ffffffff8170dda0>] ? dev_graft_qdisc+0x80/0x80 [40412.010712] [<ffffffff81127d79>] call_timer_fn+0x99/0x330 [40412.010714] [<ffffffff81127ce5>] ? call_timer_fn+0x5/0x330 [40412.010716] [<ffffffff8170dda0>] ? dev_graft_qdisc+0x80/0x80 [40412.010718] [<ffffffff8112823c>] run_timer_softirq+0x22c/0x3d0 [40412.010720] [<ffffffff810a8e94>] __do_softirq+0x164/0x4e0 [40412.010722] [<ffffffff810a9475>] irq_exit+0x125/0x130 [40412.010725] [<ffffffff8183d324>] smp_apic_timer_interrupt+0x44/0x50 [40412.010728] [<ffffffff8183b342>] apic_timer_interrupt+0x72/0x80 [40412.010729] <EOI> [<ffffffff816802db>] ? cpuidle_enter_state+0x6b/0x2f0 [40412.010734] [<ffffffff81680647>] cpuidle_enter+0x17/0x20 [40412.010738] [<ffffffff810f3a37>] cpu_startup_entry+0x477/0x570 [40412.010742] [<ffffffff818237f7>] rest_init+0x137/0x140 [40412.010746] [<ffffffff82144031>] start_kernel+0x4bb/0x4dc [40412.010748] [<ffffffff82143120>] ? early_idt_handlers+0x120/0x120 [40412.010749] [<ffffffff821434d7>] x86_64_start_reservations+0x2a/0x2c [40412.010751] [<ffffffff8214362b>] x86_64_start_kernel+0x152/0x175 [40412.010753] ---[ end trace d4b66c904a846a70 ]---
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 21 kernel bugs. Fedora 21 has now been rebased to 3.18.3-201.fc21. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you experience different issues, please open a new bug report for those.
still happens again and again
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 21 kernel bugs. Fedora 21 has now been rebased to 3.19.5-200.fc21. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 22, and are still experiencing this issue, please change the version to Fedora 22. If you experience different issues, please open a new bug report for those.
problem still persists
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 22 kernel bugs. Fedora 22 has now been rebased to 4.2.3-200.fc22. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 23, and are still experiencing this issue, please change the version to Fedora 23. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug is being closed with INSUFFICIENT_DATA as there has not been a response in over 4 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.