Package: linux-image-4.17.0-0.bpo.3-amd64 Followup-For: Bug #907717 Dear Maintainer,
Today i experienced a backtrace which resulted to a system without a graphic output. In logs i found a entry about a bug with a message Unable to handle kernel NULL pointer deference. The process involved in Oops was again Xorg. It looks like the kernel 4.16.0-0.bpo2-amd64 is good without this kind of failures. Thank you
2018-09-01T19:23:00.289544+02:00 debian kernel: [25854.565534] refcount_t: increment on 0; use-after-free. 2018-09-01T19:23:00.289546+02:00 debian kernel: [25854.565570] WARNING: CPU: 0 PID: 26032 at /build/linux-h2pQxc/linux-4.17.17/lib/refcount.c:153 refcount_inc+0x27/0x30 2018-09-01T19:23:00.289547+02:00 debian kernel: [25854.565571] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) xt_tcpudp xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter binfmt_misc dm_thin_pool amdkfd dm_persistent_data dm_bio_prison dm_bufio libcrc32c amdgpu eeepc_wmi asus_wmi sparse_keymap rfkill wmi_bmof snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec chash gpu_sched ttm edac_mce_amd kvm_amd snd_hda_core ccp drm_kms_helper snd_hwdep rng_core snd_pcm kvm snd_timer snd drm soundcore sg fam15h_power irqbypass evdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel serio_raw k10temp pcspkr shpchp i2c_algo_bit sp5100_tco video wmi button pcc_cpufreq acpi_cpufreq parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 2018-09-01T19:23:00.289549+02:00 debian kernel: [25854.565621] crc16 mbcache jbd2 crc32c_generic fscrypto ecb sr_mod cdrom dm_mod hid_generic uas usbhid usb_storage hid sd_mod crc32c_intel aesni_intel aes_x86_64 crypto_simd cryptd glue_helper xhci_pci ahci i2c_piix4 libahci xhci_hcd libata r8169 mii usbcore scsi_mod usb_common gpio_amdpt gpio_generic 2018-09-01T19:23:00.289550+02:00 debian kernel: [25854.565647] CPU: 0 PID: 26032 Comm: Xorg Tainted: G O 4.17.0-0.bpo.3-amd64 #1 Debian 4.17.17-1~bpo9+1 2018-09-01T19:23:00.289551+02:00 debian kernel: [25854.565648] Hardware name: System manufacturer System Product Name/PRIME A320M-K, BIOS 3401 12/04/2017 2018-09-01T19:23:00.289552+02:00 debian kernel: [25854.565650] RIP: 0010:refcount_inc+0x27/0x30 2018-09-01T19:23:00.289553+02:00 debian kernel: [25854.565651] RSP: 0018:ffffabd18333b9f0 EFLAGS: 00010282 2018-09-01T19:23:00.289554+02:00 debian kernel: [25854.565652] RAX: 0000000000000000 RBX: ffff8c7c838cdc00 RCX: 0000000000000006 2018-09-01T19:23:00.289555+02:00 debian kernel: [25854.565653] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff8c7c8a616730 2018-09-01T19:23:00.289575+02:00 debian kernel: [25854.565654] RBP: ffff8c7c838ca000 R08: 0000000000000001 R09: 00000000000003c2 2018-09-01T19:23:00.289577+02:00 debian kernel: [25854.565655] R10: ffffabd18333bb70 R11: 00000000000003c2 R12: ffffabd18333ba30 2018-09-01T19:23:00.289578+02:00 debian kernel: [25854.565656] R13: 0000000000000000 R14: ffff8c7c86627000 R15: 0000000000000000 2018-09-01T19:23:00.289578+02:00 debian kernel: [25854.565658] FS: 00007f268bacda40(0000) GS:ffff8c7c8a600000(0000) knlGS:0000000000000000 2018-09-01T19:23:00.289579+02:00 debian kernel: [25854.565659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 2018-09-01T19:23:00.289580+02:00 debian kernel: [25854.565659] CR2: 00007f26799cd000 CR3: 0000000102764000 CR4: 00000000001406f0 2018-09-01T19:23:00.289581+02:00 debian kernel: [25854.565661] Call Trace: 2018-09-01T19:23:00.289582+02:00 debian kernel: [25854.565777] dc_create_stream_for_sink+0x4e/0x190 [amdgpu] 2018-09-01T19:23:00.289583+02:00 debian kernel: [25854.565822] create_stream_for_sink+0x6d/0x5f0 [amdgpu] 2018-09-01T19:23:00.289584+02:00 debian kernel: [25854.565868] ? amdgpu_dm_connector_mode_valid+0x62/0x1f0 [amdgpu] 2018-09-01T19:23:00.289584+02:00 debian kernel: [25854.565945] ? drm_mode_connector_list_update+0xb3/0x1b0 [drm] 2018-09-01T19:23:00.289585+02:00 debian kernel: [25854.565987] amdgpu_dm_connector_mode_valid+0x62/0x1f0 [amdgpu] 2018-09-01T19:23:00.289586+02:00 debian kernel: [25854.566023] drm_helper_probe_single_connector_modes+0x52a/0x6f0 [drm_kms_helper] 2018-09-01T19:23:00.289587+02:00 debian kernel: [25854.566038] drm_mode_getconnector+0x2ea/0x320 [drm] 2018-09-01T19:23:00.289587+02:00 debian kernel: [25854.566052] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] 2018-09-01T19:23:00.289588+02:00 debian kernel: [25854.566061] drm_ioctl_kernel+0x67/0xb0 [drm] 2018-09-01T19:23:00.289589+02:00 debian kernel: [25854.566073] drm_ioctl+0x2c5/0x360 [drm] 2018-09-01T19:23:00.289590+02:00 debian kernel: [25854.566084] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] 2018-09-01T19:23:00.289591+02:00 debian kernel: [25854.566112] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] 2018-09-01T19:23:00.289592+02:00 debian kernel: [25854.566121] do_vfs_ioctl+0xa2/0x620 2018-09-01T19:23:00.289593+02:00 debian kernel: [25854.566131] ? __sys_recvmsg+0x60/0xa0 2018-09-01T19:23:00.289594+02:00 debian kernel: [25854.566133] ? __sys_recvmsg+0x8f/0xa0 2018-09-01T19:23:00.289595+02:00 debian kernel: [25854.566134] ksys_ioctl+0x70/0x80 2018-09-01T19:23:00.289596+02:00 debian kernel: [25854.566136] __x64_sys_ioctl+0x16/0x20 2018-09-01T19:23:00.289596+02:00 debian kernel: [25854.566141] do_syscall_64+0x55/0x110 2018-09-01T19:23:00.289598+02:00 debian kernel: [25854.566147] entry_SYSCALL_64_after_hwframe+0x44/0xa9 2018-09-01T19:23:00.289598+02:00 debian kernel: [25854.566175] RIP: 0033:0x7f26894b8dd7 2018-09-01T19:23:00.289599+02:00 debian kernel: [25854.566176] RSP: 002b:00007fffbc1c05c8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 2018-09-01T19:23:00.289600+02:00 debian kernel: [25854.566177] RAX: ffffffffffffffda RBX: 000056037daa2510 RCX: 00007f26894b8dd7 2018-09-01T19:23:00.289601+02:00 debian kernel: [25854.566178] RDX: 00007fffbc1c0600 RSI: 00000000c05064a7 RDI: 000000000000000e 2018-09-01T19:23:00.289603+02:00 debian kernel: [25854.566179] RBP: 00007fffbc1c0600 R08: 000056037daa7640 R09: 0000000000000000 2018-09-01T19:23:00.289604+02:00 debian kernel: [25854.566179] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c05064a7 2018-09-01T19:23:00.289604+02:00 debian kernel: [25854.566201] R13: 000000000000000e R14: 00007fffbc1c0600 R15: 000000000000000e 2018-09-01T19:23:00.289605+02:00 debian kernel: [25854.566203] Code: 00 00 00 00 e8 ab ff ff ff 84 c0 74 02 f3 c3 80 3d 70 5e d4 00 00 75 f5 48 c7 c7 88 2c 27 9f c6 05 60 5e d4 00 01 e8 39 aa cc ff <0f> 0b c3 66 0f 1f 44 00 00 8b 06 83 f8 ff 74 39 31 c9 39 f8 89 2018-09-01T19:23:00.289606+02:00 debian kernel: [25854.566230] ---[ end trace 131c01da2c00fd50 ]--- 2018-09-01T19:23:00.289607+02:00 debian kernel: [25854.566307] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b8 2018-09-01T19:23:00.289608+02:00 debian kernel: [25854.566319] PGD 0 P4D 0 2018-09-01T19:23:00.289608+02:00 debian kernel: [25854.566323] Oops: 0000 [#1] SMP NOPTI 2018-09-01T19:23:00.289609+02:00 debian kernel: [25854.566330] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) xt_tcpudp xt_conntrack iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter binfmt_misc dm_thin_pool amdkfd dm_persistent_data dm_bio_prison dm_bufio libcrc32c amdgpu eeepc_wmi asus_wmi sparse_keymap rfkill wmi_bmof snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec chash gpu_sched ttm edac_mce_amd kvm_amd snd_hda_core ccp drm_kms_helper snd_hwdep rng_core snd_pcm kvm snd_timer snd drm soundcore sg fam15h_power irqbypass evdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel serio_raw k10temp pcspkr shpchp i2c_algo_bit sp5100_tco video wmi button pcc_cpufreq acpi_cpufreq parport_pc ppdev lp parport ip_tables x_tables autofs4 ext4 2018-09-01T19:23:00.289610+02:00 debian kernel: [25854.566365] crc16 mbcache jbd2 crc32c_generic fscrypto ecb sr_mod cdrom dm_mod hid_generic uas usbhid usb_storage hid sd_mod crc32c_intel aesni_intel aes_x86_64 crypto_simd cryptd glue_helper xhci_pci ahci i2c_piix4 libahci xhci_hcd libata r8169 mii usbcore scsi_mod usb_common gpio_amdpt gpio_generic 2018-09-01T19:23:00.289611+02:00 debian kernel: [25854.566385] CPU: 0 PID: 26032 Comm: Xorg Tainted: G W O 4.17.0-0.bpo.3-amd64 #1 Debian 4.17.17-1~bpo9+1 2018-09-01T19:23:00.289612+02:00 debian kernel: [25854.566387] Hardware name: System manufacturer System Product Name/PRIME A320M-K, BIOS 3401 12/04/2017 2018-09-01T19:23:00.289613+02:00 debian kernel: [25854.566429] RIP: 0010:dc_validate_stream+0x56/0x110 [amdgpu] 2018-09-01T19:23:00.289614+02:00 debian kernel: [25854.566431] RSP: 0018:ffffabd18333bb50 EFLAGS: 00010202 2018-09-01T19:23:00.289615+02:00 debian kernel: [25854.566432] RAX: 00000000fffffd01 RBX: ffff8c7c838cdc00 RCX: 00000000000002d8 2018-09-01T19:23:00.289616+02:00 debian kernel: [25854.566434] RDX: 00000000000000ec RSI: ffff8c7c838cdc08 RDI: ffff8c7c85698480 2018-09-01T19:23:00.289617+02:00 debian kernel: [25854.566435] RBP: ffff8c7c838cdc08 R08: ffff8c7c838cdcbf R09: 0000000000000320 2018-09-01T19:23:00.289617+02:00 debian kernel: [25854.566437] R10: ffffabd18333bb70 R11: 0000000000000320 R12: 0000000000000000 2018-09-01T19:23:00.289618+02:00 debian kernel: [25854.566439] R13: ffff8c7c86627310 R14: ffff8c7c83687800 R15: 0000000000000000 2018-09-01T19:23:00.289619+02:00 debian kernel: [25854.566441] FS: 00007f268bacda40(0000) GS:ffff8c7c8a600000(0000) knlGS:0000000000000000 2018-09-01T19:23:00.289620+02:00 debian kernel: [25854.566443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 2018-09-01T19:23:00.289621+02:00 debian kernel: [25854.566444] CR2: 00000000000000b8 CR3: 0000000102764000 CR4: 00000000001406f0 2018-09-01T19:23:00.289622+02:00 debian kernel: [25854.566446] Call Trace: 2018-09-01T19:23:00.289623+02:00 debian kernel: [25854.566491] amdgpu_dm_connector_mode_valid+0x81/0x1f0 [amdgpu] 2018-09-01T19:23:00.289624+02:00 debian kernel: [25854.566497] drm_helper_probe_single_connector_modes+0x52a/0x6f0 [drm_kms_helper] 2018-09-01T19:23:00.289625+02:00 debian kernel: [25854.566510] drm_mode_getconnector+0x2ea/0x320 [drm] 2018-09-01T19:23:00.289626+02:00 debian kernel: [25854.566522] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] 2018-09-01T19:23:00.289627+02:00 debian kernel: [25854.566531] drm_ioctl_kernel+0x67/0xb0 [drm] 2018-09-01T19:23:00.289628+02:00 debian kernel: [25854.566541] drm_ioctl+0x2c5/0x360 [drm] 2018-09-01T19:23:00.289629+02:00 debian kernel: [25854.566553] ? drm_mode_connector_property_set_ioctl+0x60/0x60 [drm] 2018-09-01T19:23:00.289630+02:00 debian kernel: [25854.566581] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] 2018-09-01T19:23:00.289631+02:00 debian kernel: [25854.566584] do_vfs_ioctl+0xa2/0x620 2018-09-01T19:23:00.289632+02:00 debian kernel: [25854.566586] ? __sys_recvmsg+0x60/0xa0 2018-09-01T19:23:00.289633+02:00 debian kernel: [25854.566588] ? __sys_recvmsg+0x8f/0xa0 2018-09-01T19:23:00.289633+02:00 debian kernel: [25854.566591] ksys_ioctl+0x70/0x80 2018-09-01T19:23:00.289634+02:00 debian kernel: [25854.566593] __x64_sys_ioctl+0x16/0x20 2018-09-01T19:23:00.289635+02:00 debian kernel: [25854.566595] do_syscall_64+0x55/0x110 2018-09-01T19:23:00.289636+02:00 debian kernel: [25854.566597] entry_SYSCALL_64_after_hwframe+0x44/0xa9 2018-09-01T19:23:00.289637+02:00 debian kernel: [25854.566599] RIP: 0033:0x7f26894b8dd7 2018-09-01T19:23:00.289638+02:00 debian kernel: [25854.566600] RSP: 002b:00007fffbc1c05c8 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 2018-09-01T19:23:00.289639+02:00 debian kernel: [25854.566602] RAX: ffffffffffffffda RBX: 000056037daa2510 RCX: 00007f26894b8dd7 2018-09-01T19:23:00.289639+02:00 debian kernel: [25854.566604] RDX: 00007fffbc1c0600 RSI: 00000000c05064a7 RDI: 000000000000000e 2018-09-01T19:23:00.289640+02:00 debian kernel: [25854.566605] RBP: 00007fffbc1c0600 R08: 000056037daa7640 R09: 0000000000000000 2018-09-01T19:23:00.289641+02:00 debian kernel: [25854.566607] R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c05064a7 2018-09-01T19:23:00.289642+02:00 debian kernel: [25854.566608] R13: 000000000000000e R14: 00007fffbc1c0600 R15: 000000000000000e 2018-09-01T19:23:00.289650+02:00 debian kernel: [25854.566610] Code: 74 5f 8b 46 38 89 86 68 02 00 00 48 8b 07 48 8d 6b 08 48 89 ee 48 8b 00 e8 c8 aa 3a de 84 c0 75 0a 5b b8 05 00 00 00 5d 41 5c c3 <49> 8b bc 24 b8 00 00 00 48 89 de 48 8b 07 48 8b 00 e8 a4 aa 3a 2018-09-01T19:23:00.289652+02:00 debian kernel: [25854.566675] RIP: dc_validate_stream+0x56/0x110 [amdgpu] RSP: ffffabd18333bb50 2018-09-01T19:23:00.289653+02:00 debian kernel: [25854.566676] CR2: 00000000000000b8 2018-09-01T19:23:00.289653+02:00 debian kernel: [25854.566678] ---[ end trace 131c01da2c00fd51 ]--- 2018-09-01T19:23:00.301471+02:00 debian kernel: [25854.575953] [drm] SADs count is: -2, don't need to read it 2018-09-01T19:23:21.297226+02:00 debian kernel: [25875.574593] sysrq: SysRq : Emergency Remount R/O 2018-09-01T19:23:21.337370+02:00 debian kernel: [25875.613711] EXT4-fs (dm-0): re-mounted. Opts: (null) 2018-09-01T19:23:21.373373+02:00 debian kernel: [25875.649384] EXT4-fs (dm-2): re-mounted. Opts: (null) 2018-09-01T19:23:21.521385+02:00 debian kernel: [25875.795933] EXT4-fs (dm-9): re-mounted. Opts: (null) 2018-09-01T19:23:21.567805+02:00 debian kernel: [25875.845097] EXT4-fs (dm-11): re-mounted. Opts: (null) 2018-09-01T19:23:21.581513+02:00 debian kernel: [25875.856342] EXT4-fs (dm-10): re-mounted. Opts: (null) 2018-09-01T19:23:21.589522+02:00 debian kernel: [25875.864978] EXT4-fs (dm-4): re-mounted. Opts: (null) 2018-09-01T19:23:21.621515+02:00 debian kernel: [25875.896528] EXT4-fs (dm-5): re-mounted. Opts: (null) 2018-09-01T19:23:21.693380+02:00 debian kernel: [25875.970178] EXT4-fs (dm-1): re-mounted. Opts: (null)
