assarbad Posted July 3 Posted July 3 Two days ago I upgraded the kernel to 25.5.1 (6.12.30-current-sunxi) from 25.2.3 (6.12.20-current-sunxi). Since then I have no longer been able to play a certain title (FLAC file) in mocp. In case it's relevant, the title is: "Malukah - Awake (The Dragonborn Comes)". Symptoms: dmesg starts showing kernel trace output at 1:43 of the song mocp finally stalls at 1:52 and it's impossible to interact with it from that point on Is there anyone here who would be able to provide pointers on how to debug this? I am a developer and I have done some work with Yocto/OE before and wouldn't be afraid to get at this with a debugger. Since it's nicely reproducible, I could switch between those package versions to investigate. From the trace output it looks as if this is in exfat code. Makes sense, since the song is getting played from a USB key that is exfat-formatted. Here's the dmesg output with the two traces towards the end. I decided to include a few messages up to the point where systemd starts: [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 6.12.30-current-sunxi (build@armbian) (arm-linux-gnueabihf-gcc (Ubuntu 13.2.0-23ubuntu4) 13.2.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #1 SMP Thu May 22 12:29:54 UTC 2025 [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=50c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt: Machine model: Cubietech Cubietruck [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] Reserved memory: created CMA memory pool at 0x4a000000, size 96 MiB [ 0.000000] OF: reserved mem: initialized node default-pool, compatible id shared-dma-pool [ 0.000000] OF: reserved mem: 0x4a000000..0x4fffffff (98304 KiB) map reusable default-pool [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000040000000-0x000000006fffffff] [ 0.000000] HighMem [mem 0x0000000070000000-0x00000000bfcfffff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000040000000-0x00000000bfcfffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x00000000bfcfffff] [ 0.000000] On node 0, zone HighMem: 768 pages in unavailable ranges [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: Using PSCI v0.1 Function IDs from DT [ 0.000000] percpu: Embedded 19 pages/cpu s48588 r8192 d21044 u77824 [ 0.000000] pcpu-alloc: s48588 r8192 d21044 u77824 alloc=19*4096 [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Kernel command line: root=UUID=ad99c006-e2fa-4070-8fbe-9e08f643dd62 rootwait rootfstype=ext4 console=ttyS0,115200 console=tty1 hdmi.audio=EDID:0 disp.screen0_output_mode=1920x1080p60 consoleblank=0 loglevel=1 ubootpart=5b507211-01 ubootsource=mmc usb-storage.quirks=0x2537:0x1066:u,0x2537:0x1068:u sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_fb_mem_reserve=16 cgroup_enable=memory swapaccount=1 [ 0.000000] Unknown kernel command line parameters "ubootpart=5b507211-01 ubootsource=mmc sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_fb_mem_reserve=16 cgroup_enable=memory", will be passed to user space. [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear) [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 523520 [ 0.000000] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] allocated 2097152 bytes of page_ext [ 0.000000] ftrace: allocating 47264 entries in 139 pages [ 0.000000] ftrace: allocated 139 pages with 4 groups [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 0.000000] Rude variant of Tasks RCU enabled. [ 0.000000] Tracing variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] RCU Tasks Rude: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 0.000000] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] GIC: Using split EOI/Deactivate mode [ 0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys). [ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns [ 0.000002] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns [ 0.000018] Switching to timer-based delay loop, resolution 41ns [ 0.000435] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns [ 0.001281] Console: colour dummy device 80x30 [ 0.001311] printk: legacy console [tty1] enabled [ 0.001505] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=96000) [ 0.001530] CPU: Testing write buffer coherency: ok [ 0.001607] pid_max: default: 32768 minimum: 301 [ 0.010543] LSM: initializing lsm=capability,yama,apparmor [ 0.013707] Yama: becoming mindful. [ 0.014095] AppArmor: AppArmor initialized [ 0.015557] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) [ 0.015592] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) [ 0.021695] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.044852] Setting up static identity map for 0x40100000 - 0x40100054 [ 0.048263] rcu: Hierarchical SRCU implementation. [ 0.048283] rcu: Max phase no-delay instances is 1000. [ 0.048858] Timer migration: 1 hierarchy levels; 8 children per group; 1 crossnode level [ 0.054065] smp: Bringing up secondary CPUs ... [ 0.071012] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.071303] smp: Brought up 1 node, 2 CPUs [ 0.071330] SMP: Total of 2 processors activated (96.00 BogoMIPS). [ 0.071345] CPU: All CPU(s) started in HYP mode. [ 0.071352] CPU: Virtualization extensions available. [ 0.071568] Memory: 1933492K/2094080K available (10240K kernel code, 1685K rwdata, 9100K rodata, 1024K init, 409K bss, 57468K reserved, 98304K cma-reserved, 1307648K highmem) [ 0.073644] devtmpfs: initialized [ 0.086909] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4 [ 0.087516] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns [ 0.087579] futex hash table entries: 512 (order: 3, 32768 bytes, linear) [ 0.096245] pinctrl core: initialized pinctrl subsystem [ 0.099654] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 0.107107] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.108097] audit: initializing netlink subsys (disabled) [ 0.108752] audit: type=2000 audit(0.100:1): state=initialized audit_enabled=0 res=1 [ 0.109807] thermal_sys: Registered thermal governor 'fair_share' [ 0.109827] thermal_sys: Registered thermal governor 'bang_bang' [ 0.109838] thermal_sys: Registered thermal governor 'step_wise' [ 0.110006] cpuidle: using governor ladder [ 0.110071] cpuidle: using governor menu [ 0.110879] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers. [ 0.110905] hw-breakpoint: maximum watchpoint size is 8 bytes. [ 0.121698] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.121833] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.121937] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.122055] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.122158] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.122261] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.122578] /soc/hdmi@1c16000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.122732] /soc/hdmi@1c16000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.123085] /soc/interrupt-controller@1c81000: Fixed dependency cycle(s) with /soc/interrupt-controller@1c81000 [ 0.123248] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.123439] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.123615] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.123773] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.123862] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.123940] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.124009] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/display-frontend@1e20000 [ 0.124077] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/display-frontend@1e00000 [ 0.124170] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.124249] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.124317] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/display-frontend@1e20000 [ 0.124386] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/display-frontend@1e00000 [ 0.125215] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.125339] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.125455] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.125804] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.125918] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.126030] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.128237] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.128436] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.128705] /soc/hdmi@1c16000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.128943] /soc/hdmi@1c16000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.131769] /soc/pinctrl@1c20800: Fixed dependency cycle(s) with /soc/pinctrl@1c20800/clk-out-a-pin [ 0.136344] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.136455] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.136830] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.136924] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.137304] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.137470] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.137604] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.137736] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e40000 [ 0.137883] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.138028] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.138142] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/display-frontend@1e20000 [ 0.138279] /soc/display-backend@1e40000: Fixed dependency cycle(s) with /soc/display-frontend@1e00000 [ 0.138694] /soc/display-frontend@1e20000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.138884] /soc/display-frontend@1e00000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.139055] /soc/lcd-controller@1c0d000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.139186] /soc/lcd-controller@1c0c000: Fixed dependency cycle(s) with /soc/display-backend@1e60000 [ 0.139302] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0d000 [ 0.139477] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/lcd-controller@1c0c000 [ 0.139661] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/display-frontend@1e20000 [ 0.139780] /soc/display-backend@1e60000: Fixed dependency cycle(s) with /soc/display-frontend@1e00000 [ 0.142414] /soc/hdmi@1c16000: Fixed dependency cycle(s) with /hdmi-connector [ 0.142644] /hdmi-connector: Fixed dependency cycle(s) with /soc/hdmi@1c16000 [ 0.154682] cryptd: max_cpu_qlen set to 1000 [ 0.232124] raid6: neonx8 gen() 582 MB/s [ 0.300278] raid6: neonx4 gen() 822 MB/s [ 0.368453] raid6: neonx2 gen() 825 MB/s [ 0.436671] raid6: neonx1 gen() 677 MB/s [ 0.504833] raid6: int32x8 gen() 252 MB/s [ 0.572914] raid6: int32x4 gen() 289 MB/s [ 0.641009] raid6: int32x2 gen() 365 MB/s [ 0.709128] raid6: int32x1 gen() 337 MB/s [ 0.709142] raid6: using algorithm neonx2 gen() 825 MB/s [ 0.777211] raid6: .... xor() 614 MB/s, rmw enabled [ 0.777223] raid6: using neon recovery algorithm [ 0.779037] iommu: Default domain type: Translated [ 0.779063] iommu: DMA domain TLB invalidation policy: strict mode [ 0.780359] SCSI subsystem initialized [ 0.780941] libata version 3.00 loaded. [ 0.781297] usbcore: registered new interface driver usbfs [ 0.781366] usbcore: registered new interface driver hub [ 0.781432] usbcore: registered new device driver usb [ 0.781783] pps_core: LinuxPPS API ver. 1 registered [ 0.781798] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it> [ 0.781825] PTP clock support registered [ 0.782595] Advanced Linux Sound Architecture Driver Initialized. [ 0.784208] NetLabel: Initializing [ 0.784231] NetLabel: domain hash size = 128 [ 0.784242] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 0.784360] NetLabel: unlabeled traffic allowed by default [ 0.785656] clocksource: Switched to clocksource arch_sys_counter [ 0.798624] VFS: Disk quotas dquot_6.6.0 [ 0.798981] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 0.799863] AppArmor: AppArmor Filesystem Enabled [ 0.816412] NET: Registered PF_INET protocol family [ 0.816787] IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear) [ 0.903926] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear) [ 0.904136] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear) [ 0.904189] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear) [ 0.904385] TCP bind hash table entries: 8192 (order: 5, 131072 bytes, linear) [ 0.904778] TCP: Hash tables configured (established 8192 bind 8192) [ 0.905038] UDP hash table entries: 512 (order: 2, 16384 bytes, linear) [ 0.905134] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear) [ 0.906025] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 0.906649] Trying to unpack rootfs image as initramfs... [ 0.910989] Initialise system trusted keyrings [ 0.911155] Key type blacklist registered [ 0.912237] workingset: timestamp_bits=14 max_order=19 bucket_order=5 [ 0.912442] zbud: loaded [ 0.915119] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.926275] fuse: init (API version 7.41) [ 0.942065] integrity: Platform Keyring initialized [ 0.942166] xor: measuring software checksum speed [ 0.945010] arm4regs : 1159 MB/sec [ 0.950057] 8regs : 656 MB/sec [ 0.954923] 32regs : 680 MB/sec [ 0.957769] neon : 1170 MB/sec [ 0.957807] xor: using function: neon (1170 MB/sec) [ 0.957845] Key type asymmetric registered [ 0.957862] Asymmetric key parser 'x509' registered [ 0.958690] bounce: pool size: 64 pages [ 0.959359] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247) [ 0.960113] io scheduler mq-deadline registered [ 0.960146] io scheduler kyber registered [ 0.960735] io scheduler bfq registered [ 0.977058] ledtrig-cpu: registered to indicate activity on CPUs [ 0.995929] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled [ 1.014369] sun4i-drm display-engine: bound 1e00000.display-frontend (ops 0xc0bb0c8c) [ 1.014715] sun4i-drm display-engine: bound 1e20000.display-frontend (ops 0xc0bb0c8c) [ 1.015235] sun4i-drm display-engine: bound 1e60000.display-backend (ops 0xc0bb03f8) [ 1.015729] sun4i-drm display-engine: bound 1e40000.display-backend (ops 0xc0bb03f8) [ 1.016653] sun4i-drm display-engine: No panel or bridge found... RGB output disabled [ 1.016699] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0bae8e8) [ 1.017975] sun4i-drm display-engine: No panel or bridge found... RGB output disabled [ 1.018031] sun4i-drm display-engine: bound 1c0d000.lcd-controller (ops 0xc0bae8e8) [ 1.020256] sun4i-drm display-engine: bound 1c16000.hdmi (ops 0xc0bb1688) [ 1.022796] [drm] Initialized sun4i-drm 1.0.0 for display-engine on minor 0 [ 1.022975] sun4i-drm display-engine: [drm] Cannot find any crtc or sizes [ 1.032968] brd: module loaded [ 1.039581] sun4i-drm display-engine: [drm] Cannot find any crtc or sizes [ 1.047130] loop: module loaded [ 1.055585] usbcore: registered new interface driver usb-storage [ 1.057950] sunxi-rtc 1c20d00.rtc: registered as rtc0 [ 1.058027] sunxi-rtc 1c20d00.rtc: setting system clock to 2025-07-02T08:56:46 UTC (1751446606) [ 1.058332] i2c_dev: i2c /dev entries driver [ 1.062076] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0) [ 1.064151] sun4i-ss 1c15000.crypto-engine: no reset control found [ 1.064308] sun4i-ss 1c15000.crypto-engine: Die ID 0 [ 1.066426] clocksource: hstimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns [ 1.066943] hid: raw HID events driver (C) Jiri Kosina [ 1.067216] usbcore: registered new interface driver usbhid [ 1.067237] usbhid: USB HID core driver [ 1.067954] armv7-pmu pmu: hw perfevents: no interrupt-affinity property, guessing. [ 1.071446] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 (8000000f) counters available [ 1.095873] NET: Registered PF_INET6 protocol family [ 2.127070] Freeing initrd memory: 13656K [ 2.182392] Segment Routing with IPv6 [ 2.182617] In-situ OAM (IOAM) with IPv6 [ 2.182903] NET: Registered PF_PACKET protocol family [ 2.182935] NET: Registered PF_KEY protocol family [ 2.182985] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. [ 2.183410] Key type dns_resolver registered [ 2.184170] Registering SWP/SWPB emulation handler [ 2.196828] registered taskstats version 1 [ 2.197160] Loading compiled-in X.509 certificates [ 2.214355] zswap: loaded using pool zstd/zbud [ 2.215911] Key type .fscrypt registered [ 2.215942] Key type fscrypt-provisioning registered [ 2.226935] Btrfs loaded, zoned=no, fsverity=yes [ 2.307518] Key type encrypted registered [ 2.307567] AppArmor: AppArmor sha256 policy hashing enabled [ 2.328245] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pi not found, using dummy regulator [ 2.328719] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation. [ 2.331261] sun4i-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver [ 2.332777] sun4i-pinctrl 1c20800.pinctrl: supply vcc-ph not found, using dummy regulator [ 2.336072] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pb not found, using dummy regulator [ 2.337794] printk: legacy console [ttyS0] disabled [ 2.338531] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 71, base_baud = 1500000) is a 16550A [ 2.338635] printk: legacy console [ttyS0] enabled [ 2.343112] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 72, base_baud = 1500000) is a 16550A [ 2.343750] serial serial0: tty port ttyS2 registered [ 2.345203] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pa not found, using dummy regulator [ 2.345901] sun7i-dwmac 1c50000.ethernet: IRQ eth_wake_irq not found [ 2.345938] sun7i-dwmac 1c50000.ethernet: IRQ eth_lpi not found [ 2.345954] sun7i-dwmac 1c50000.ethernet: IRQ sfty not found [ 2.346126] sun7i-dwmac 1c50000.ethernet: PTP uses main clock [ 2.346202] sun7i-dwmac 1c50000.ethernet: no regulator found [ 2.346880] sun7i-dwmac 1c50000.ethernet: Version ID not available [ 2.346924] sun7i-dwmac 1c50000.ethernet: DWMAC1000 [ 2.346940] sun7i-dwmac 1c50000.ethernet: No HW DMA feature register supported [ 2.346954] sun7i-dwmac 1c50000.ethernet: TX Checksum insertion supported [ 2.346969] sun7i-dwmac 1c50000.ethernet: Normal descriptors [ 2.346982] sun7i-dwmac 1c50000.ethernet: Ring mode enabled [ 2.378420] axp20x-i2c 1-0034: AXP20x variant AXP209 found [ 2.394479] input: axp20x-pek as /devices/platform/soc/1c2ac00.i2c/i2c-1/1-0034/axp20x-pek/input/input0 [ 2.400618] axp20x-i2c 1-0034: Backup (RTC) battery charging is disabled [ 2.400815] axp20x-i2c 1-0034: AXP20X driver loaded [ 2.406857] sun4i-pinctrl 1c20800.pinctrl: supply vcc-pf not found, using dummy regulator [ 2.413840] sunxi-mmc 1c0f000.mmc: Got CD GPIO [ 2.418221] ahci-sunxi 1c18000.sata: supply ahci not found, using dummy regulator [ 2.418494] ahci-sunxi 1c18000.sata: supply phy not found, using dummy regulator [ 2.438244] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB [ 2.465843] ahci-sunxi 1c18000.sata: controller can't do PMP, turning off CAP_PMP [ 2.465933] ahci-sunxi 1c18000.sata: SSS flag set, parallel bus scan disabled [ 2.465982] ahci-sunxi 1c18000.sata: AHCI vers 0001.0100, 32 command slots, 3 Gbps, platform mode [ 2.466005] ahci-sunxi 1c18000.sata: 1/1 ports implemented (port mask 0x1) [ 2.466021] ahci-sunxi 1c18000.sata: flags: ncq sntf stag pm led clo only pio slum part ccc [ 2.468318] scsi host0: ahci-sunxi [ 2.469308] ata1: SATA max UDMA/133 mmio [mem 0x01c18000-0x01c18fff] port 0x100 irq 119 lpm-pol 0 [ 2.474777] of_cfs_init [ 2.474978] of_cfs_init: OK [ 2.478704] mmc0: host does not support reading read-only switch, assuming write-enable [ 2.480932] mmc0: new high speed SDHC card at address b368 [ 2.484061] mmcblk0: mmc0:b368 NCard 3.70 GiB [ 2.713012] clk: Disabling unused clocks [ 2.713235] PM: genpd: Disabling unused power domains [ 2.713266] ALSA device list: [ 2.713278] #0: sun4i-codec [ 2.713992] mmcblk0: p1 [ 2.780858] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 2.782832] ata1.00: Model 'Samsung SSD 840 EVO 500GB', rev 'EXT0CB6Q', applying quirks: noncqtrim zeroaftertrim nodmalog [ 2.782904] ata1.00: supports DRM functions and may not be fully accessible [ 2.782919] ata1.00: ATA-9: Samsung SSD 840 EVO 500GB, EXT0CB6Q, max UDMA/133 [ 2.782939] ata1.00: 976773168 sectors, multi 1: LBA48 NCQ (depth 32) [ 2.783422] ata1.00: Features: Trust [ 2.783673] ata1.00: supports DRM functions and may not be fully accessible [ 2.784145] ata1.00: configured for UDMA/133 [ 2.785048] scsi 0:0:0:0: Direct-Access ATA Samsung SSD 840 CB6Q PQ: 0 ANSI: 5 [ 2.787212] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 2.787270] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500 GB/466 GiB) [ 2.787381] sd 0:0:0:0: [sda] Write Protect is off [ 2.787406] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 [ 2.787559] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 2.787919] sd 0:0:0:0: [sda] Preferred minimum I/O size 512 bytes [ 2.806306] sda: sda1 sda2 sda3 [ 2.807527] sd 0:0:0:0: [sda] Attached SCSI disk [ 2.816074] Freeing unused kernel image (initmem) memory: 1024K [ 2.816726] Run /init as init process [ 2.816754] with arguments: [ 2.816773] /init [ 2.816784] with environment: [ 2.816794] HOME=/ [ 2.816805] TERM=linux [ 2.816815] ubootpart=5b507211-01 [ 2.816826] ubootsource=mmc [ 2.816837] sunxi_ve_mem_reserve=0 [ 2.816847] sunxi_g2d_mem_reserve=0 [ 2.816858] sunxi_fb_mem_reserve=16 [ 2.816869] cgroup_enable=memory [ 3.909998] sunxi-mmc 1c12000.mmc: allocated mmc-pwrseq [ 3.933806] sunxi-mmc 1c12000.mmc: initialized, max. request size: 16384 KB [ 4.061411] mmc1: new high speed SDIO card at address 0001 [ 4.211031] sun5i-a13-gpadc-iio: Failed to locate of_node [id: 0] [ 4.283436] sun7i-dwmac 1c50000.ethernet end0: renamed from eth0 [ 4.301983] axp20x-gpio axp20x-gpio: DMA mask not set [ 4.327476] axp20x-gpio axp20x-gpio: AXP209 pinctrl and GPIO driver loaded [ 4.355581] axp20x-battery-power-supply axp20x-battery-power-supply: DMA mask not set [ 4.371464] axp20x-usb-power-supply axp20x-usb-power-supply: DMA mask not set [ 5.873099] EXT4-fs (sda1): mounted filesystem ad99c006-e2fa-4070-8fbe-9e08f643dd62 ro with ordered data mode. Quota mode: none. [ 14.571324] platform sound: deferred probe pending: asoc-simple-card: parse error [ 14.571365] platform 1c13400.phy: deferred probe pending: platform: supplier axp20x-usb-power-supply not ready [ 14.571381] platform 1c13000.usb: deferred probe pending: platform: supplier 1c13400.phy not ready [ 14.571395] platform 1c14000.usb: deferred probe pending: platform: supplier 1c13400.phy not ready [ 14.571409] platform 1c1c000.usb: deferred probe pending: platform: supplier 1c13400.phy not ready [ 14.571422] platform 1c14400.usb: deferred probe pending: platform: supplier 1c13400.phy not ready [ 14.571436] platform 1c1c400.usb: deferred probe pending: platform: supplier 1c13400.phy not ready [ 14.571449] platform axp20x-battery-power-supply: deferred probe pending: (reason unknown) [ 14.571462] platform axp20x-usb-power-supply: deferred probe pending: (reason unknown) [ 17.843978] systemd[1]: Inserted module 'autofs4' [ 18.117493] systemd[1]: systemd 255.4-1ubuntu8.8 running in system mode (+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT -GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified) [ 18.117576] systemd[1]: Detected architecture arm. ... SNIP ... [90829.705266] 8<--- cut here --- [90829.708505] Unable to handle kernel NULL pointer dereference at virtual address 00000255 when write [90829.717695] [00000255] *pgd=00000000 [90829.721519] Internal error: Oops: 805 [#1] SMP THUMB2 [90829.726679] Modules linked in: nls_utf8 cifs cifs_arc4 nls_ucs2_utils cifs_md4 netfs exfat snd_usb_audio snd_hwdep binfmt_misc snd_seq_dummy snd_usbmidi_lib snd_seq_oss snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi snd_seq_device uas lima gpu_sched drm_shmem_helper axp20x_adc sunxi_cedrus(C) sun4i_gpadc_iio v4l2_mem2mem videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 sunxi_cir videobuf2_common videodev mc display_connector cpufreq_dt evdev brcmfmac_wcc sch_fq_codel bonding brcmfmac brcmutil cfg80211 rfkill dm_mod autofs4 ext4 mbcache jbd2 axp20x_usb_power axp20x_battery industrialio pinctrl_axp209 sun4i_gpadc pwm_sun4i sunxi phy_generic uio_pdrv_genirq pwrseq_simple uio realtek [90829.788428] CPU: 1 UID: 1000 PID: 14406 Comm: mocp Tainted: G C 6.12.30-current-sunxi #1 [90829.797976] Tainted: [C]=CRAP [90829.800979] Hardware name: Allwinner sun7i (A20) Family [90829.806223] PC is at mmioset+0x90/0xa4 [90829.810015] LR is at exfat_get_block+0x58b/0x638 [exfat] [90829.815374] pc : [<c0ab76b0>] lr : [<bfbdf847>] psr: 8003b833 [90829.821651] sp : f2559b48 ip : 00000255 fp : 00000000 [90829.826890] r10: 00004931 r9 : 00926255 r8 : c5a21400 [90829.832128] r7 : d09bc5c0 r6 : 00000000 r5 : 00000200 r4 : 00000055 [90829.838668] r3 : 00000001 r2 : 000001a7 r1 : 00000000 r0 : 00000255 [90829.845209] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment none [90829.852537] Control: 50c5387d Table: 536e006a DAC: 00000051 [90829.858294] Register r0 information: non-paged memory [90829.863367] Register r1 information: NULL pointer [90829.868089] Register r2 information: non-paged memory [90829.873156] Register r3 information: non-paged memory [90829.878221] Register r4 information: non-paged memory [90829.883286] Register r5 information: non-paged memory [90829.888356] Register r6 information: NULL pointer [90829.893082] Register r7 information: slab buffer_head start d09bc5c0 pointer offset 0 size 64 [90829.901656] Register r8 information: slab kmalloc-1k start c5a21400 pointer offset 0 size 1024 [90829.910306] Register r9 information: non-paged memory [90829.915380] Register r10 information: non-paged memory [90829.920533] Register r11 information: NULL pointer [90829.925338] Register r12 information: non-paged memory [90829.930495] Process mocp (pid: 14406, stack limit = 0xfea269c0) [90829.936437] Stack: (0xf2559b48 to 0xf255a000) [90829.940814] 9b40: d09bc240 2e2746cd 00000001 d09bc5c0 00000000 c597c86c [90829.949011] 9b60: 00000001 00000024 c5a21400 00000000 c597c800 d09bc240 00000000 0012aace [90829.957211] 9b80: 0012aacd 00000000 00000000 00000000 00000000 2e2746cd 00000000 00004931 [90829.965406] 9ba0: d09bc5c0 00000000 00000001 00000200 e1bc1760 d09bc240 00000200 c032a52f [90829.973601] 9bc0: d09bc5c0 00000000 00000000 00004932 00000000 ef5b9864 bfbdf2bd 00000000 [90829.981796] 9be0: e5afa800 00000000 00000054 d09bc240 00000000 00000000 00000000 00000000 [90829.989993] 9c00: 00000000 00000000 00000000 2e2746cd 00afa800 e22e4a80 00000001 00000000 [90829.998200] 9c20: f2559c98 c2840400 00000008 00000008 00004932 c032c541 f2559cb0 00000000 [90830.006409] 9c40: 255febb0 00000009 00000000 00000000 ef5b9864 f2559cb0 e1bc1760 c2840400 [90830.014612] 9c60: 00000000 00000001 00012cc0 00080000 00260000 f2559dd4 ef5b9864 00000001 [90830.022812] 9c80: 00000001 0000000b 00112cca e1bc186c 0000091c c032cfb1 00000000 ef5b9864 [90830.031006] 9ca0: 00000001 00000001 255febaf 00000000 00000000 00000000 ef5b9864 00000000 [90830.039202] 9cc0: 255febb1 00000000 00000200 00000000 c2840400 00000000 00000000 00000000 [90830.047396] 9ce0: 00000000 00000000 00000000 00000000 000048e0 bfbdf2bd 00260000 2e2746cd [90830.055591] 9d00: bfb86090 f2559dd4 f2559dd4 c0286967 00000000 ef5b9864 00000000 00000000 [90830.063788] 9d20: 00000000 00000000 00000000 00000000 00000001 00000100 f2559d38 f2559d38 [90830.071985] 9d40: 00000000 2e2746cd 0000000a 0000000b e5afa800 f2559dd4 e1bc1878 c0286bc3 [90830.080182] 9d60: e5afa800 e1bc1868 ffffffeb 00400040 e1bc1878 e5afa800 e1bc1868 8c140000 [90830.088384] 9d80: f2559e4c e1bc1868 ef80aae4 e5afa800 000008fc f2559f28 000008fa c027dd25 [90830.096580] 9da0: e5afae4c ede0f780 ede0f7e8 000008fd f2559dec c15adf00 00000000 00000000 [90830.104777] 9dc0: 00001fa0 e5afa800 e5afa800 2e2746cd 00000000 ede0f780 e1bc1868 ede0f7e8 [90830.112973] 9de0: 00000926 00000001 00000001 00000000 00000000 2e2746cd 00000002 00926255 [90830.121170] 9e00: 00000004 008fabe0 00000000 e1bc1760 b117bb9c 00000001 f2559f28 c027dfc5 [90830.129370] 9e20: f2559f10 c0ae793f c250c988 00000000 e5afa800 c01b36e1 e5afa800 c01b3b53 [90830.137568] 9e40: e1bc1868 ede0f780 e5afa800 00000003 ef5b8cb8 ef80ab74 ef80aae4 00000000 [90830.145762] 9e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [90830.153960] 9e80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [90830.162153] 9ea0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [90830.170347] 9ec0: 00000000 00000000 00000000 2e2746cd e5afa800 bfbe6225 ede0f780 e5afa800 [90830.178542] 9ee0: 00001fa0 f2559f80 b117bb9c 00000001 bfb87c80 c02f0a13 00000000 00000002 [90830.186737] 9f00: 00000001 f2559f00 c265aa00 00000000 00000000 00000000 b117bb9c 00001fa0 [90830.194933] 9f20: 00000001 00000000 ede0f780 00000000 008fabe0 00000000 00000000 00000000 [90830.203129] 9f40: 00000000 00004004 00000000 00000000 b12007d4 2e2746cd b12007d4 ede0f783 [90830.211332] 9f60: ede0f780 008fabe0 00000000 c01002a0 e5afa800 00000003 b120076c c02f114b [90830.219536] 9f80: 008fabe0 00000000 c0102455 2e2746cd 00000001 00001fa0 b117bb9c 00000004 [90830.227731] 9fa0: 00000003 c0100061 00001fa0 b117bb9c 00000004 b117bb9c 00001fa0 00000000 [90830.235929] 9fc0: 00001fa0 b117bb9c 00000004 00000003 00001fa0 00001fa0 b12007f0 b120076c [90830.244122] 9fe0: 00000003 b117bad0 b6ac36d1 b6a396c6 80030030 00000004 00000000 00000000 [90830.252311] Call trace: [90830.252331] mmioset from exfat_get_block+0x58b/0x638 [exfat] [90830.260706] exfat_get_block [exfat] from block_read_full_folio+0xf7/0x2b0 [90830.267634] block_read_full_folio from do_mpage_readpage+0x71/0x498 [90830.274031] do_mpage_readpage from mpage_readahead+0x8d/0xe4 [90830.279818] mpage_readahead from read_pages+0x4b/0x1e8 [90830.285078] read_pages from page_cache_ra_unbounded+0xbf/0x12c [90830.291027] page_cache_ra_unbounded from filemap_get_pages+0x385/0x554 [90830.297674] filemap_get_pages from filemap_read+0xd1/0x34c [90830.303276] filemap_read from vfs_read+0x1b3/0x228 [90830.308191] vfs_read from ksys_read+0x53/0xa8 [90830.312668] ksys_read from ret_fast_syscall+0x1/0x5c [90830.317751] Exception stack(0xf2559fa8 to 0xf2559ff0) [90830.322822] 9fa0: 00001fa0 b117bb9c 00000004 b117bb9c 00001fa0 00000000 [90830.331019] 9fc0: 00001fa0 b117bb9c 00000004 00000003 00001fa0 00001fa0 b12007f0 b120076c [90830.339214] 9fe0: 00000003 b117bad0 b6ac36d1 b6a396c6 [90830.344288] Code: 3a04 dbf0 2b02 bfb8 (f80c) 1b01 [90830.349338] ---[ end trace 0000000000000000 ]--- [90830.354108] ------------[ cut here ]------------ [90830.358863] WARNING: CPU: 1 PID: 14406 at kernel/exit.c:886 do_exit+0x62d/0x744 [90830.366383] Modules linked in: nls_utf8 cifs cifs_arc4 nls_ucs2_utils cifs_md4 netfs exfat snd_usb_audio snd_hwdep binfmt_misc snd_seq_dummy snd_usbmidi_lib snd_seq_oss snd_seq_midi snd_seq_midi_event snd_seq snd_rawmidi snd_seq_device uas lima gpu_sched drm_shmem_helper axp20x_adc sunxi_cedrus(C) sun4i_gpadc_iio v4l2_mem2mem videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 sunxi_cir videobuf2_common videodev mc display_connector cpufreq_dt evdev brcmfmac_wcc sch_fq_codel bonding brcmfmac brcmutil cfg80211 rfkill dm_mod autofs4 ext4 mbcache jbd2 axp20x_usb_power axp20x_battery industrialio pinctrl_axp209 sun4i_gpadc pwm_sun4i sunxi phy_generic uio_pdrv_genirq pwrseq_simple uio realtek [90830.427987] CPU: 1 UID: 1000 PID: 14406 Comm: mocp Tainted: G D C 6.12.30-current-sunxi #1 [90830.428023] Tainted: [D]=DIE, [C]=CRAP [90830.428029] Hardware name: Allwinner sun7i (A20) Family [90830.428036] Call trace: [90830.428050] unwind_backtrace from show_stack+0x11/0x14 [90830.428091] show_stack from dump_stack_lvl+0x37/0x42 [90830.428114] dump_stack_lvl from __warn+0xbf/0xe8 [90830.428138] __warn from warn_slowpath_fmt+0x113/0x118 [90830.428161] warn_slowpath_fmt from do_exit+0x62d/0x744 [90830.428186] do_exit from make_task_dead+0x77/0x11c [90830.428214] make_task_dead from die+0x2a5/0x364 [90830.428235] die from die_kernel_fault+0x6f/0x84 [90830.428258] die_kernel_fault from do_translation_fault+0x1/0x88 [90830.428283] do_translation_fault from 0xc160323c [90830.428338] ---[ end trace 0000000000000000 ]--- The issue is easy enough to work around, simply downgrade to the working version: # apt install linux-image-current-sunxi=25.2.3 armbian-firmware=25.2.3 linux-dtb-current-sunxi=25.2.3 Reading package lists... Done Building dependency tree... Done Reading state information... Done The following packages will be DOWNGRADED: armbian-firmware linux-dtb-current-sunxi linux-image-current-sunxi 0 upgraded, 0 newly installed, 3 downgraded, 0 to remove and 0 not upgraded. Need to get 136 MB of archives. After this operation, 3,704 kB disk space will be freed. Do you want to continue? [Y/n] y Get:1 http://fi.mirror.armbian.de/apt noble/main armhf armbian-firmware all 25.2.3 [94.1 MB] Get:2 http://fi.mirror.armbian.de/apt noble/main armhf linux-dtb-current-sunxi armhf 25.2.3 [211 kB] Get:3 http://fi.mirror.armbian.de/apt noble/main armhf linux-image-current-sunxi armhf 25.2.3 [41.5 MB] Fetched 103 MB in 19s (5,509 kB/s) dpkg: warning: downgrading armbian-firmware from 25.5.1 to 25.2.3 (Reading database ... 49560 files and directories currently installed.) Preparing to unpack .../armbian-firmware_25.2.3_all.deb ... Unpacking armbian-firmware (25.2.3) over (25.5.1) ... dpkg: warning: downgrading linux-dtb-current-sunxi from 25.5.1 to 25.2.3 Preparing to unpack .../linux-dtb-current-sunxi_25.2.3_armhf.deb ... Armbian 'linux-dtb-current-sunxi' for '6.12.20-current-sunxi': 'preinst' starting. Armbian 'linux-dtb-current-sunxi' for '6.12.20-current-sunxi': 'preinst' finishing. Unpacking linux-dtb-current-sunxi (25.2.3) over (25.5.1) ... dpkg: warning: downgrading linux-image-current-sunxi from 25.5.1 to 25.2.3 Preparing to unpack .../linux-image-current-sunxi_25.2.3_armhf.deb ... Armbian 'linux-image-current-sunxi' for '6.12.30-current-sunxi': 'prerm' starting. Armbian 'linux-image-current-sunxi' for '6.12.30-current-sunxi': 'prerm' finishing. Armbian 'linux-image-current-sunxi' for '6.12.20-current-sunxi': 'preinst' starting. ls: cannot access '/var/lib/initramfs-tools': No such file or directory Armbian 'linux-image-current-sunxi' for '6.12.20-current-sunxi': 'preinst' finishing. Unpacking linux-image-current-sunxi (25.2.3) over (25.5.1) ... Armbian 'linux-image-current-sunxi' for '6.12.30-current-sunxi': 'postrm' starting. Armbian 'linux-image-current-sunxi' for '6.12.30-current-sunxi': 'postrm' finishing. Setting up linux-image-current-sunxi (25.2.3) ... Armbian 'linux-image-current-sunxi' for '6.12.20-current-sunxi': 'postinst' starting. update-initramfs: Generating /boot/initrd.img-6.12.20-current-sunxi I: The initramfs will attempt to resume from /dev/sda3 I: (UUID=ae1efffa-3fde-41fc-ab76-99e60ecca21c) I: Set the RESUME variable to override this. update-initramfs: Converting to u-boot format Armbian: update last-installed kernel symlink to 'zImage'... '/boot/zImage' -> 'vmlinuz-6.12.20-current-sunxi' Armbian: Debian compat: linux-update-symlinks install 6.12.20-current-sunxi boot/vmlinuz-6.12.20-current-sunxi I: /boot/vmlinuz.old is now a symlink to vmlinuz-6.12.20-current-sunxi I: /boot/initrd.img.old is now a symlink to initrd.img-6.12.20-current-sunxi I: /boot/vmlinuz is now a symlink to vmlinuz-6.12.20-current-sunxi I: /boot/initrd.img is now a symlink to initrd.img-6.12.20-current-sunxi Armbian 'linux-image-current-sunxi' for '6.12.20-current-sunxi': 'postinst' finishing. Setting up linux-dtb-current-sunxi (25.2.3) ... Armbian 'linux-dtb-current-sunxi' for '6.12.20-current-sunxi': 'postinst' starting. Armbian: DTB: symlinking /boot/dtb to /boot/dtb-6.12.20-current-sunxi... 'dtb' -> 'dtb-6.12.20-current-sunxi' Armbian 'linux-dtb-current-sunxi' for '6.12.20-current-sunxi': 'postinst' finishing. Setting up armbian-firmware (25.2.3) ... # apt-mark hold linux-image-current-sunxi armbian-firmware linux-dtb-current-sunxi linux-image-current-sunxi set on hold. armbian-firmware set on hold. linux-dtb-current-sunxi set on hold. 0 Quote
robertoj Posted July 3 Posted July 3 Things you should try: Capture the dmesg since before the sound file is playing Try again with the sound file in the main EXT4 partition 1 Quote
Ryzer Posted July 4 Posted July 4 Just to confirm this is a regression issue could you also test with a clean image rather than an upgrade? It is possible something could have gone wrong during the upgrade. If I understand correctly you are only using an SD card for booting, and the kernel and main OS reside on the SSD. have you preformed an integrity check of the USB, just to ensure there is no possible file corruption? Could you also please provide the output of mocp --debug? Best of luck Ryzer 0 Quote
eselarm Posted July 4 Posted July 4 I have a BananaPi M1, same SoC, same kernel (the upgrade went fine for me last week). Although I only use it for its SATA connector (big HDD as NBD, OS on SD-card), audio 3.5mm plug did work. Maybe I could see what mine does, but rather with a default Debian player, like mpv, works via ssh CLI. I can generate some FLAC file, but I don't want to search for the specific song/title. Also I could do a temp exfat on a loopdev or so or just play from NFS, Btrfs or Ext4 loopdev. 0 Quote
assarbad Posted July 6 Author Posted July 6 Hi folks, I'll give these a try. Sorry for the brief silence. I'll perform an integrity check. Quote Capture the dmesg since before the sound file is playing I did. I used --follow and had it run in another Tmux window. The excerpt above was retrieved this way. There's about a minute and a half of (no) dmesg output prior to the output at 90829. Quote Try again with the sound file in the main EXT4 partition Will do. Quote Just to confirm this is a regression issue could you also test with a clean image rather than an upgrade? It is possible something could have gone wrong during the upgrade. Hasn't that been pretty much proven by downgrading just the kernel and friends? And it'd be quite hard to test a clean image, but if the other methods fail to narrow it down, I'll do it. Have to see if I can find one. This system has run for a long time, but debsums should typically be enough to tell if something is amiss, no? So rather than a clean image I'd suggest to attempt another upgrade to see whether that helps, no? Quote have you preformed an integrity check of the USB, just to ensure there is no possible file corruption? I have not. It's a good point, though. However, it'd still be a regression, no? Again, the older kernel simply reads everything and the music plays fine. Quote Although I only use it for its SATA connector (big HDD as NBD, OS on SD-card), audio 3.5mm plug did work. Maybe I could see what mine does, but rather with a default Debian player, like mpv, works via ssh CLI. I can generate some FLAC file, but I don't want to search for the specific song/title. Also I could do a temp exfat on a loopdev or so or just play from NFS, Btrfs or Ext4 loopdev. These are good points. I'll try with cat or so and perhaps mpv as well. If it's indeed an exfat issue there is no relation to the song or mocp. Will report back with some more information. 0 Quote
assarbad Posted July 6 Author Posted July 6 (edited) Tried to check the integrity: $ sudo fsck.exfat -n -v /dev/sdb1 exfatprogs version : 1.2.9 label: MUSIC sector size: 512.00 B cluster size: 256.00 KB volume size: 2.26 GB /dev/sdb1: clean. directories 2083, files 32997 So it's fine. Just built exfatprogs from main just now (52b816e). For good measure I'll boot up a Windows and retry a file system repair there to see if any errors show up. Curious, I just noticed the volume size appears to be wrong in the above output: /dev/sdb1 501G 390G 111G 78% /mnt/... Edited July 6 by assarbad 0 Quote
Ryzer Posted July 6 Posted July 6 Note you can provide more diagnostics with armbianmonitor -u and then pasting the link to the report here. Maybe something could have gone wrong in the unpacking process or linger system components causing issue? Just trying to rule out all other possibilities before putting it down to regression. I haven't encountered this on my system or aware of anyone else having the same problem. That's not of course to say their could be a problem. 1 Quote
assarbad Posted July 6 Author Posted July 6 (edited) @Ryzer attached is the lightly redacted log (removed user and hostname; one mount point now shows as $HOME, because I simply used this instead of manual manipulations: gzip -ckd /var/log/armbian-hardware-monitor.log.1.gz|sed "s|$HOME|\$HOME|g; s|$USER|username|g; s|$(hostname)|host|g; s|$(hostname -s)|host|g" The log is with the older kernel booted, which didn't exhibit the issue. Going to try the other one now. Please note, the actual armbian-hardware-monitor.log was empty (i.e. had been logrotate'd). debsums gives: $ sudo debsums -cs /etc/issue /etc/issue.net /etc/os-release /usr/share/doc/base-files/changelog.gz debsums: missing file /etc/default/armbian-motd.dpkg-dist (from linux-bionic-root-next-cubietruck package) debsums: missing file /etc/default/armbian-ramlog.dpkg-dist (from linux-bionic-root-next-cubietruck package) debsums: missing file /etc/default/armbian-zram-config.dpkg-dist (from linux-bionic-root-next-cubietruck package) /etc/skel/.config/htop/htoprc debsums: missing file /etc/update-motd.d/99-armbian-point-to-faq (from linux-bionic-root-next-cubietruck package) Will remove linux-bionic-root-next-cubietruck then reboot. But as you can see from the reference to bionic, this system isn't exactly freshly installed :-D armbian-hardware-monitor.log.gz Edited July 6 by assarbad 0 Quote
assarbad Posted July 6 Author Posted July 6 Okay, so I ran a little experiment to verify that it's not about mocp but rather something about the file or file system: $ cp -a /mnt/music/_INCOMING/Malukah\ -\ The\ Dragonborn\ Comes\ \(2017\)/01\ -\ Awake.flac 01.flac Segmentation fault The resulting file contains 9175040 Bytes instead of the expected 9593429, so is truncated. Consequently I also see the corresponding dmesg output parrots what I showed before. So it's about exfat, it appears. Prior to the upgrade did I move the file over to an ext4 partition as well (as I guessed it would be impossible with the 6.12.30-current-sunxi kernel). Copying that around, including _to_ the USB key doesn't seem to cause any issues. I'll see if I am able to figure out how to get the clusters of that particular file. Perhaps it becomes reproducible elsewhere with a (trimmed down) disk image? 2025-07-06_dmesg.txt 0 Quote
Ryzer Posted July 9 Posted July 9 Oh right, that is fairly old. My USB sticks are not in exFat format which may explain why I have not encoutered such issues. I will have to try re-formatting one as exFat to see if encounter the same kind of issue. That said after a bit of digging, it could be related to this? https://www.cvedetails.com/cve/CVE-2025-22036/ 0 Quote
eselarm Posted July 10 Posted July 10 (edited) On 7/6/2025 at 10:56 PM, assarbad said: Perhaps it becomes reproducible elsewhere with a (trimmed down) disk image? Maybe, but maybe the issue won't occur then. If you want it reproducable, first for yourself, make a complete image of that USB stick on other large storage device and use that as 'master problem disk'. I have an old PC with 3x 4T HDD Btrfs multidevice formatted for such cases. Btrfs can make reflink copies or do RW snapshots, so easy and fast to create a slightly modified image. There is gddrescue to make initial copy from USB-stick. Also this is a USB-stick in an SBC, all sorts of power issues might also be a root cause. You can use nbd-server and nbd-client to make large/huge images available via network, I do that for my BananaPi M1 (8T HDD). In the past for Btrfs kernel development itself for example, there was/is? a metadata only imager tool, so in case of a complex filesystem bug, you can share only meta data, the data is actually zeroed/sparse. But you need a good extra Linux computer, Windows exFAT handling makes little sense. Best to also test/use the image with a generic Debian Bookworm/Trixie computer, I use a Armbian virtual machine for such a case, running on RPi4 (if 32-bit) or ROCK5B (64-bit only). They can use NBD (as client). AFAIR you can use the sunxi kernel directly in a KVM, at least did something with a NanoPi-NEO image (same kernel as well). Edited July 10 by eselarm 1 Quote
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