Hardware: raspberry pi 3

Just after reboot:

[   44.235692] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[   45.693589] ------------[ cut here ]------------
[   45.693984] ------------[ cut here ]------------
[   45.694013] WARNING: CPU: 3 PID: 669 at lib/dma-debug.c:612 debug_dma_assert_idle+0x148/0x1e0
[   45.694022] vc4-drm soc:gpu: DMA-API: cpu touching an active dma mapped cacheline [cln=0x00c63600]
[   45.694193] Modules linked in: ip6table_raw ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 iptable_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ebtable_filter ebtables ip6table_filter ip6_tables smsc95xx usbnet mii vc4 drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect sysimgblt dwc2 leds_gpio bcm2835_dma bcm2835_wdt bcm2835_rng udc_core xfs libcrc32c mmc_block sdhci_iproc sdhci_pltfm sdhci pwm_bcm2835 mmc_core i2c_bcm2835
[   45.694206] CPU: 3 PID: 669 Comm: firewalld Not tainted 4.9.0-0.rc7.git1.1.fc26.armv7hl #1
[   45.694210] Hardware name: Generic DT based system
[   45.694242] [<c021a2f4>] (unwind_backtrace) from [<c0214c94>] (show_stack+0x18/0x1c)
[   45.694259] [<c0214c94>] (show_stack) from [<c05a4280>] (dump_stack+0x9c/0xd0)
[   45.694277] [<c05a4280>] (dump_stack) from [<c0258d3c>] (__warn+0xe4/0x104)
[   45.694290] [<c0258d3c>] (__warn) from [<c0258d98>] (warn_slowpath_fmt+0x3c/0x4c)
[   45.694308] [<c0258d98>] (warn_slowpath_fmt) from [<c05d371c>] (debug_dma_assert_idle+0x148/0x1e0)
[   45.694329] [<c05d371c>] (debug_dma_assert_idle) from [<c03c7630>] (wp_page_copy+0xe8/0x63c)
[   45.694347] [<c03c7630>] (wp_page_copy) from [<c03c83ec>] (do_wp_page+0x428/0x6f4)
[   45.694364] [<c03c83ec>] (do_wp_page) from [<c03cbad8>] (handle_mm_fault+0xe48/0xf20)
[   45.694385] [<c03cbad8>] (handle_mm_fault) from [<c09e081c>] (do_page_fault+0x240/0x3b4)
[   45.694402] [<c09e081c>] (do_page_fault) from [<c0209350>] (do_DataAbort+0x40/0xc0)
[   45.694420] [<c0209350>] (do_DataAbort) from [<c09e0120>] (__dabt_usr+0x40/0x60)
[   45.694426] Exception stack(0xedf99fb0 to 0xedf99ff8)
[   45.694436] 9fa0:                                     b6f9e210 0000029d eb9bf73d b6cf3270
[   45.694450] 9fc0: 00000000 bee3f3c8 b6f9e6d0 00000078 00000001 b6c10000 00000249 bee3f404
[   45.694461] 9fe0: 00000249 bee3f3c8 b6b5e638 b6cf3270 20030010 ffffffff
[   45.694539] ---[ end trace 9be96690619d844e ]---
[   45.694543] Mapped at:
[   45.694679]  
[   45.694680] [<bf33c350>] drm_fbdev_cma_create_with_funcs+0x9c/0x2a0 [drm_kms_helper]
[   45.694798]  
[   45.694799] [<bf33bd44>] drm_fb_helper_initial_config+0x16c/0x33c [drm_kms_helper]
[   45.694918]  
[   45.694918] [<bf33c648>] drm_fbdev_cma_init_with_funcs+0xb4/0xf4 [drm_kms_helper]
[   45.695037]  
[   45.695038] [<bf33c6a0>] drm_fbdev_cma_init+0x18/0x24 [drm_kms_helper]
[   45.695104]  
[   45.695105] [<bf363eb4>] vc4_kms_load+0xd0/0x104 [vc4]
[   45.702565] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   46.037344] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[   46.068681] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[   46.279610] WARNING: CPU: 1 PID: 585 at lib/dma-debug.c:612 debug_dma_assert_idle+0x148/0x1e0
[   46.294159] vc4-drm soc:gpu: DMA-API: cpu touching an active dma mapped cacheline [cln=0x00c63600]
[   46.309387] Modules linked in: ebtable_broute bridge stp llc ip6table_raw ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 iptable_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ebtable_filter ebtables ip6table_filter ip6_tables smsc95xx usbnet mii vc4 drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect sysimgblt dwc2 leds_gpio bcm2835_dma bcm2835_wdt bcm2835_rng udc_core xfs libcrc32c mmc_block sdhci_iproc sdhci_pltfm sdhci pwm_bcm2835 mmc_core i2c_bcm2835
[   46.359196] CPU: 1 PID: 585 Comm: firewalld Tainted: G        W       4.9.0-0.rc7.git1.1.fc26.armv7hl #1
[   46.376163] Hardware name: Generic DT based system
[   46.393094] [<c021a2f4>] (unwind_backtrace) from [<c0214c94>] (show_stack+0x18/0x1c)
[   46.410007] [<c0214c94>] (show_stack) from [<c05a4280>] (dump_stack+0x9c/0xd0)
[   46.427212] [<c05a4280>] (dump_stack) from [<c0258d3c>] (__warn+0xe4/0x104)
[   46.443781] [<c0258d3c>] (__warn) from [<c0258d98>] (warn_slowpath_fmt+0x3c/0x4c)
[   46.460476] [<c0258d98>] (warn_slowpath_fmt) from [<c05d371c>] (debug_dma_assert_idle+0x148/0x1e0)
[   46.477291] [<c05d371c>] (debug_dma_assert_idle) from [<c03c7630>] (wp_page_copy+0xe8/0x63c)
[   46.494135] [<c03c7630>] (wp_page_copy) from [<c03c83ec>] (do_wp_page+0x428/0x6f4)
[   46.511066] [<c03c83ec>] (do_wp_page) from [<c03cbad8>] (handle_mm_fault+0xe48/0xf20)
[   46.528166] [<c03cbad8>] (handle_mm_fault) from [<c09e081c>] (do_page_fault+0x240/0x3b4)
[   46.545261] [<c09e081c>] (do_page_fault) from [<c0209350>] (do_DataAbort+0x40/0xc0)
[   46.562541] [<c0209350>] (do_DataAbort) from [<c09e0120>] (__dabt_usr+0x40/0x60)
[   46.579882] Exception stack(0xc339ffb0 to 0xc339fff8)
[   46.597271] ffa0:                                     0000029d 00000000 00000000 00000001
[   46.614858] ffc0: 0000029d bee3f3c8 b6f9e6d0 00000078 00000001 b6c10000 00000249 bee3f404
[   46.632544] ffe0: 000e2dcc bee3f3c8 b6b5e5ac b6b2d9cc 20030010 ffffffff
[   46.650421] ---[ end trace 9be96690619d844f ]---
[   46.668049] Mapped at:
[   46.685531]  
[   46.685768] [<bf33c350>] drm_fbdev_cma_create_with_funcs+0x9c/0x2a0 [drm_kms_helper]
[   46.703592]  
[   46.703830] [<bf33bd44>] drm_fb_helper_initial_config+0x16c/0x33c [drm_kms_helper]
[   46.721719]  
[   46.721953] [<bf33c648>] drm_fbdev_cma_init_with_funcs+0xb4/0xf4 [drm_kms_helper]
[   46.739854]  
[   46.740085] [<bf33c6a0>] drm_fbdev_cma_init+0x18/0x24 [drm_kms_helper]
[   46.757944]  
[   46.758115] [<bf363eb4>] vc4_kms_load+0xd0/0x104 [vc4]
[   47.111329] Netfilter messages via NETLINK v0.30.