Created attachment 697537 [details]
complete dmesg
this prevents me from booting. i've had the apparently terrible idea of putting
attached edid in /lib/firmware a couple of weeks ago. if i unplug the monitor i
can boot normally and X will detect the monitor on it's own when i replug it.
this issue was apparently raised by udev, because i could boot the kernel
4.7.6-1-default before without problem, now i can't.
uname -a
Linux fxe 4.7.6-1-default #1 SMP PREEMPT Fri Sep 30 12:22:14 UTC 2016 (fb37fcc)
x86_64 x86_64 x86_64 GNU/Linux
[ 56.392430] BUG: unable to handle kernel NULL pointer dereference at
0000000000000008
[ 56.392474] IP: [<ffffffff812195f4>] set_root+0x24/0xb0
[ 56.392503] PGD 0
[ 56.392520] Oops: 0000 [#1] PREEMPT SMP
[ 56.392539] Modules linked in: nf_log_ipv6 xt_pkttype nf_log_ipv4
nf_log_common xt_LOG xt_limit af_packet iscsi_ibft iscsi_boot_sysfs msr
dm_crypt algif_skcipher af_alg snd_hda_codec_realtek snd_hda_codec_generic
snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep joydev
uas usb_storage snd_pcm coretemp r8169 kvm_intel snd_timer iTCO_wdt
iTCO_vendor_support kvm gpio_ich mii acpi_cpufreq tpm_tis fjes snd lpc_ich
mfd_core soundcore ppdev tpm ip6t_REJECT nf_reject_ipv6 parport_pc parport
shpchp i2c_i801 irqbypass button xt_tcpudp nf_conntrack_ipv6 nf_defrag_ipv6
ip6table_raw ipt_REJECT nf_reject_ipv4 iptable_raw xt_CT iptable_filter
ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast
nf_conntrack_ipv4 nf_defrag_ipv4 ip_tables xt_conntrack nf_conntrack
ip6table_filter ip6_tables
[ 56.393141] x_tables btrfs xor hid_generic raid6_pq usbhid ata_generic
ata_piix serio_raw ehci_pci amdkfd amd_iommu_v2 radeon i2c_algo_bit
drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops uhci_hcd ehci_hcd
usbcore ttm usb_common drm sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc
scsi_dh_alua
[ 56.393381] CPU: 0 PID: 224 Comm: plymouthd Not tainted 4.7.5-1-default #1
[ 56.393410] Hardware name: FUJITSU ESPRIMO P2560
/D3041-A1, BIOS 6.00 R1.02.3041.A1 11/09/2010
[ 56.393451] task: ffff880036d5c100 ti: ffff880036d10000 task.ti:
ffff880036d10000
[ 56.393477] RIP: 0010:[<ffffffff812195f4>] [<ffffffff812195f4>]
set_root+0x24/0xb0
[ 56.393507] RSP: 0018:ffff880036d13928 EFLAGS: 00010202
[ 56.393533] RAX: ffff880036d5c100 RBX: ffff880036d13a60 RCX:
0000000000000000
[ 56.393557] RDX: ffffffff82220e88 RSI: 0000000000000000 RDI:
ffff880036d13a60
[ 56.393580] RBP: ffff880036d13940 R08: 0000000000000048 R09:
ffff8800d2495ba0
[ 56.393602] R10: ffff880196bdd000 R11: 0000000000000000 R12:
0000000000000000
[ 56.393626] R13: ffff88019fb0f01c R14: ffff880196bd9780 R15:
ffff880198623f00
[ 56.393650] FS: 00007f2c8a81a800(0000) GS:ffff88019fc00000(0000)
knlGS:0000000000000000
[ 56.393687] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 56.393706] CR2: 0000000000000008 CR3: 00000000d2984000 CR4:
00000000000406f0
[ 56.393728] Stack:
[ 56.393740] ffff880036d13a60 0000000000000040 ffff88019fb0f01c
ffff880036d13978
[ 56.393785] ffffffff8121a3b3 ffff88019fb0f000 ffff880036d13b74
ffff880036d13a60
[ 56.393829] ffff880196bd9780 ffff880198623f00 ffff880036d13b74
ffffffff8121dae5
[ 56.393875] Call Trace:
[ 56.393895] [<ffffffff8121a3b3>] path_init+0x1e3/0x350
[ 56.393919] [<ffffffff8121dae5>] path_openat+0x65/0x13b0
[ 56.393939] [<ffffffff8121ff5e>] do_filp_open+0x7e/0xe0
[ 56.393960] [<ffffffff8120eb20>] file_open_name+0xf0/0x120
[ 56.393980] [<ffffffff8120eb7c>] filp_open+0x2c/0x50
[ 56.393998] [<ffffffff81215dd4>] kernel_read_file_from_path+0x34/0x70
[ 56.394024] [<ffffffff814ee2fa>] _request_firmware+0x40a/0xad0
[ 56.394046] [<ffffffff814ee9ec>] request_firmware+0x2c/0x40
[ 56.394085] [<ffffffffc01b81fb>] drm_load_edid_firmware+0x28b/0x430
[drm_kms_helper]
[ 56.394121] [<ffffffffc01adcd3>]
drm_helper_probe_single_connector_modes+0x1e3/0x4d0 [drm_kms_helper]
[ 56.394159] [<ffffffffc01bacb5>] drm_fb_helper_hotplug_event+0x95/0x120
[drm_kms_helper]
[ 56.394190] [<ffffffffc01bad90>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x50/0x70 [drm_kms_helper]
[ 56.394268] [<ffffffffc021c426>] radeon_fbdev_restore_mode+0x16/0x40
[radeon]
[ 56.394307] [<ffffffffc01f057e>] radeon_driver_lastclose_kms+0xe/0x20
[radeon]
[ 56.394360] [<ffffffffc0059cf9>] drm_lastclose+0x29/0x120 [drm]
[ 56.394390] [<ffffffffc005a0da>] drm_release+0x2ea/0x4c0 [drm]
[ 56.394412] [<ffffffff81211d28>] __fput+0xb8/0x1c0
[ 56.394431] [<ffffffff810996bc>] task_work_run+0x7c/0xa0
[ 56.394452] [<ffffffff81080613>] do_exit+0x2c3/0xb90
[ 56.394471] [<ffffffff81080f5a>] do_group_exit+0x3a/0xa0
[ 56.394490] [<ffffffff81080fd0>] SyS_exit_group+0x10/0x10
[ 56.394512] [<ffffffff816bc276>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 56.396002] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x1e/0xa8
[ 56.396002] Leftover inexact backtrace:
[ 56.396002] Code: 1f 84 00 00 00 00 00 66 66 66 66 90 55 65 48 8b 04 25 00
d4 00 00 48 89 e5 41 55 41 54 53 f6 47 38 40 4c 8b a0 d0 06 00 00 74 3b <41> 8b
4c 24 08 f6 c1 01 75 75 49 8b 54 24 20 49 8b 44 24 18 48
[ 56.396002] RIP [<ffffffff812195f4>] set_root+0x24/0xb0
[ 56.396002] RSP <ffff880036d13928>
[ 56.396002] CR2: 0000000000000008
[ 56.396002] ---[ end trace b72a0561f3c99686 ]---