RPi3B+: Timeout waiting for hardware interrupt during work

[dviktor]

Hello! First time to post here.

My RPi3B+ have ArchLinuxARM running on it (armv7h version). Latest kernel and all updates (only packages from official repos + yay installed from AUR). My SD is Samsung EVO PLUS UHS-1 class 10 SDHC card (MB-MC32GA). This page tells that it is supported and works fine. Power adaptor is 5V/2.5A. Fan is also installed but I use it only when doing some heavy tasks. No overclocking is used.

dmesg output:
$this->bbcode_second_pass_code('', '[viktor@desolve-rpi3bplus ~]$ uname -a
Linux desolve-rpi3bplus 4.19.29-1-ARCH #1 SMP PREEMPT Thu Mar 21 01:34:43 UTC 2019 armv7l GNU/Linux

[viktor@desolve-rpi3bplus ~]$ dmesg
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.19.29-1-ARCH (builduser@leming) (gcc version 8.2.1 20181127 (GCC)) #1 SMP PREEMPT Thu Mar 21 01:34:43 UTC 2019
[ 0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[ 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: Raspberry Pi 3 Model B Plus Rev 1.3
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] cma: Reserved 8 MiB at 0x3b800000
[ 0.000000] On node 0 totalpages: 245760
[ 0.000000] Normal zone: 2160 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 245760 pages, LIFO batch:63
[ 0.000000] random: get_random_bytes called from start_kernel+0x78/0x4e8 with crng_init=0
[ 0.000000] percpu: Embedded 17 pages/cpu @(ptrval) s40908 r8192 d20532 u69632
[ 0.000000] pcpu-alloc: s40908 r8192 d20532 u69632 alloc=17*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 243600
[ 0.000000] Kernel command line: 8250.nr_uarts=0 bcm2708_fb.fbwidth=1824 bcm2708_fb.fbheight=984 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 root=/dev/mmcblk0p2 rw rootwait console=ttyS0,115200 console=tty1 selinux=0 plymouth.enable=0 smsc95xx.turbo_mode=N dwc_otg.lpm_enable=0 kgdboc=ttyS0,115200 elevator=noop
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 940504K/983040K available (11264K kernel code, 798K rwdata, 2828K rodata, 1024K init, 857K bss, 34344K reserved, 8192K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
vmalloc : 0xbc800000 - 0xff800000 (1072 MB)
lowmem : 0x80000000 - 0xbc000000 ( 960 MB)
modules : 0x7f000000 - 0x80000000 ( 16 MB)
.text : 0x(ptrval) - 0x(ptrval) (12256 kB)
.init : 0x(ptrval) - 0x(ptrval) (1024 kB)
.data : 0x(ptrval) - 0x(ptrval) ( 799 kB)
.bss : 0x(ptrval) - 0x(ptrval) ( 858 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[ 0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[ 0.000022] Switching to timer-based delay loop, resolution 52ns
[ 0.000263] Console: colour dummy device 80x30
[ 0.000978] console [tty1] enabled
[ 0.001033] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[ 0.001082] pid_max: default: 32768 minimum: 301
[ 0.001405] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.001444] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.002573] Disabling memory control group subsystem
[ 0.002675] CPU: Testing write buffer coherency: ok
[ 0.003142] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.060071] Setting up static identity map for 0x100000 - 0x100054
[ 0.080063] rcu: Hierarchical SRCU implementation.
[ 0.120128] smp: Bringing up secondary CPUs ...
[ 0.200655] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.280711] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 0.360832] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 0.360971] smp: Brought up 1 node, 4 CPUs
[ 0.361062] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[ 0.361089] CPU: All CPU(s) started in HYP mode.
[ 0.361111] CPU: Virtualization extensions available.
[ 0.362143] devtmpfs: initialized
[ 0.372926] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[ 0.373293] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.373346] futex hash table entries: 1024 (order: 4, 65536 bytes)
[ 0.373888] xor: measuring software checksum speed
[ 0.470620] arm4regs : 922.800 MB/sec
[ 0.570703] 8regs : 686.800 MB/sec
[ 0.670788] 32regs : 639.200 MB/sec
[ 0.770867] neon : 1001.600 MB/sec
[ 0.770893] xor: using function: neon (1001.600 MB/sec)
[ 0.770925] pinctrl core: initialized pinctrl subsystem
[ 0.771824] NET: Registered protocol family 16
[ 0.774135] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.778220] audit: initializing netlink subsys (disabled)
[ 0.778419] audit: type=2000 audit(0.770:1): state=initialized audit_enabled=0 res=1
[ 0.779475] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.779514] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.779710] Serial: AMBA PL011 UART driver
[ 0.781644] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[ 0.813409] cryptd: max_cpu_qlen set to 1000
[ 0.981747] raid6: int32x1 gen() 97 MB/s
[ 1.151745] raid6: int32x1 xor() 93 MB/s
[ 1.321927] raid6: int32x2 gen() 156 MB/s
[ 1.491867] raid6: int32x2 xor() 121 MB/s
[ 1.662312] raid6: int32x4 gen() 168 MB/s
[ 1.832385] raid6: int32x4 xor() 134 MB/s
[ 2.002645] raid6: int32x8 gen() 169 MB/s
[ 2.172929] raid6: int32x8 xor() 124 MB/s
[ 2.342997] raid6: neonx1 gen() 351 MB/s
[ 2.513023] raid6: neonx1 xor() 347 MB/s
[ 2.683155] raid6: neonx2 gen() 521 MB/s
[ 2.853335] raid6: neonx2 xor() 515 MB/s
[ 3.023456] raid6: neonx4 gen() 714 MB/s
[ 3.193641] raid6: neonx4 xor() 647 MB/s
[ 3.363776] raid6: neonx8 gen() 685 MB/s
[ 3.533953] raid6: neonx8 xor() 585 MB/s
[ 3.533978] raid6: using algorithm neonx4 gen() 714 MB/s
[ 3.534003] raid6: .... xor() 647 MB/s, rmw enabled
[ 3.534028] raid6: using neon recovery algorithm
[ 3.534472] bcm2835-dma 3f007000.dma: DMA legacy API manager at (ptrval), dmachans=0x1
[ 3.536009] SCSI subsystem initialized
[ 3.536246] usbcore: registered new interface driver usbfs
[ 3.536326] usbcore: registered new interface driver hub
[ 3.536472] usbcore: registered new device driver usb
[ 3.553319] raspberrypi-firmware soc:firmware: Attached to firmware from 2019-03-20 12:17, variant start
[ 3.563329] raspberrypi-firmware soc:firmware: Firmware hash is 179398afa4f6b4cf91bc4887438a1d8357454642
[ 3.575052] clocksource: Switched to clocksource arch_sys_counter
[ 3.723199] VFS: Disk quotas dquot_6.6.0
[ 3.723303] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 3.723561] FS-Cache: Loaded
[ 3.723765] CacheFiles: Loaded
[ 3.732969] NET: Registered protocol family 2
[ 3.733891] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes)
[ 3.733959] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[ 3.734091] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[ 3.734298] TCP: Hash tables configured (established 8192 bind 8192)
[ 3.734451] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 3.734519] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 3.734776] NET: Registered protocol family 1
[ 3.735463] RPC: Registered named UNIX socket transport module.
[ 3.735494] RPC: Registered udp transport module.
[ 3.735518] RPC: Registered tcp transport module.
[ 3.735541] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 3.735571] NET: Registered protocol family 44
[ 3.735832] Unpacking initramfs...
[ 4.232048] Freeing initrd memory: 6460K
[ 4.241038] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[ 4.243864] Initialise system trusted keyrings
[ 4.244065] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[ 4.253526] FS-Cache: Netfs 'nfs' registered for caching
[ 4.254097] NFS: Registering the id_resolver key type
[ 4.254147] Key type id_resolver registered
[ 4.254171] Key type id_legacy registered
[ 4.254206] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 4.254805] JFS: nTxBlock = 7462, nTxLock = 59697
[ 4.260922] SGI XFS with ACLs, security attributes, realtime, no debug enabled
[ 4.268554] async_tx: api initialized (async)
[ 4.268597] Key type asymmetric registered
[ 4.268621] Asymmetric key parser 'x509' registered
[ 4.268697] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[ 4.268920] io scheduler noop registered (default)
[ 4.268948] io scheduler deadline registered
[ 4.269155] io scheduler cfq registered
[ 4.269181] io scheduler mq-deadline registered
[ 4.269206] io scheduler kyber registered
[ 4.269486] io scheduler bfq registered
[ 4.272080] BCM2708FB: allocated DMA memory 0xfb840000
[ 4.272148] BCM2708FB: allocated DMA channel 0
[ 4.330293] Console: switching to colour frame buffer device 228x61
[ 4.358887] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[ 4.359631] vc-sm: Videocore shared memory driver
[ 4.360061] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[ 4.370912] loop: module loaded
[ 4.371043] Loading iSCSI transport class v2.0-870.
[ 4.371933] libphy: Fixed MDIO Bus: probed
[ 4.372338] usbcore: registered new interface driver lan78xx
[ 4.372561] usbcore: registered new interface driver ax88179_178a
[ 4.372786] usbcore: registered new interface driver smsc95xx
[ 4.373005] usbcore: registered new interface driver cdc_ncm
[ 4.373168] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 4.401185] dwc_otg 3f980000.usb: base=(ptrval)
[ 4.601488] Core Release: 2.80a
[ 4.601593] Setting default values for core params
[ 4.601749] Finished setting default values for core params
[ 4.802130] Using Buffer DMA mode
[ 4.802235] Periodic Transfer Interrupt Enhancement - disabled
[ 4.802398] Multiprocessor Interrupt Enhancement - disabled
[ 4.802558] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 4.802689] Dedicated Tx FIFOs mode
[ 4.803457] WARN::dwc_otg_hcd_init:1049: FIQ DMA bounce buffers: virt = bb854000 dma = 0xfb854000 len=9024
[ 4.803743] FIQ FSM acceleration enabled for :
Non-periodic Split Transactions
Periodic Split Transactions
High-Speed Isochronous Endpoints
Interrupt/Control Split Transaction hack enabled
[ 4.810258] dwc_otg: Microframe scheduler enabled
[ 4.810398] WARN::hcd_init_fiq:457: FIQ on core 1
[ 4.816360] WARN::hcd_init_fiq:458: FIQ ASM at 808bfec0 length 36
[ 4.822372] WARN::hcd_init_fiq:484: MPHI regs_base at f0006000
[ 4.828459] dwc_otg 3f980000.usb: DWC OTG Controller
[ 4.834402] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[ 4.840436] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000
[ 4.846448] Init: Port Power? op_state=1
[ 4.852259] Init: Power Port (0)
[ 4.858302] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19
[ 4.864308] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 4.870256] usb usb1: Product: DWC OTG Controller
[ 4.876295] usb usb1: Manufacturer: Linux 4.19.29-1-ARCH dwc_otg_hcd
[ 4.882289] usb usb1: SerialNumber: 3f980000.usb
[ 4.888853] hub 1-0:1.0: USB hub found
[ 4.894788] hub 1-0:1.0: 1 port detected
[ 4.901064] dwc_otg: FIQ enabled
[ 4.901070] dwc_otg: NAK holdoff enabled
[ 4.901076] dwc_otg: FIQ split-transaction FSM enabled
[ 4.901087] Module dwc_common_port init
[ 4.901331] usbcore: registered new interface driver uas
[ 4.907265] usbcore: registered new interface driver usb-storage
[ 4.913101] usbcore: registered new interface driver ums-alauda
[ 4.918843] usbcore: registered new interface driver ums-cypress
[ 4.924530] usbcore: registered new interface driver ums-datafab
[ 4.930105] usbcore: registered new interface driver ums_eneub6250
[ 4.935549] usbcore: registered new interface driver ums-freecom
[ 4.941021] usbcore: registered new interface driver ums-isd200
[ 4.946493] usbcore: registered new interface driver ums-jumpshot
[ 4.951845] usbcore: registered new interface driver ums-karma
[ 4.957256] usbcore: registered new interface driver ums-onetouch
[ 4.962660] usbcore: registered new interface driver ums-realtek
[ 4.967933] usbcore: registered new interface driver ums-sddr09
[ 4.973238] usbcore: registered new interface driver ums-sddr55
[ 4.978447] usbcore: registered new interface driver ums-usbat
[ 4.983782] mousedev: PS/2 mouse device common for all mice
[ 4.989572] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[ 4.995124] device-mapper: uevent: version 1.0.3
[ 5.000259] device-mapper: ioctl: 4.39.0-ioctl (2018-04-03) initialised: dm-devel@redhat.com
[ 5.006063] device-mapper: multipath round-robin: version 1.2.0 loaded
[ 5.011145] device-mapper: multipath queue-length: version 0.2.0 loaded
[ 5.016201] device-mapper: multipath service-time: version 0.3.0 loaded
[ 5.021238] device-mapper: raid: Loading target version 1.14.0
[ 5.026584] bcm2835-cpufreq: min=600000 max=1400000
[ 5.032181] sdhci: Secure Digital Host Controller Interface driver
[ 5.037137] sdhci: Copyright(c) Pierre Ossman
[ 5.039710] mmc-bcm2835 3f300000.mmc: could not get clk, deferring probe
[ 5.042246] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[ 5.044698] Error: Driver 'sdhost-bcm2835' is already registered, aborting...
[ 5.047134] sdhci-pltfm: SDHCI platform and OF driver helper
[ 5.050524] ledtrig-cpu: registered to indicate activity on CPUs
[ 5.053040] hidraw: raw HID events driver (C) Jiri Kosina
[ 5.055676] usbcore: registered new interface driver usbhid
[ 5.058111] usbhid: USB HID core driver
[ 5.060940] vchiq: vchiq_init_state: slot_zero = (ptrval), is_master = 0
[ 5.064451] [vc_sm_connected_init]: start
[ 5.073028] [vc_sm_connected_init]: end - returning 0
[ 5.075980] Initializing XFRM netlink socket
[ 5.078369] NET: Registered protocol family 17
[ 5.080885] Key type dns_resolver registered
[ 5.083341] Registering SWP/SWPB emulation handler
[ 5.086586] registered taskstats version 1
[ 5.088976] Loading compiled-in X.509 certificates
[ 5.091937] Btrfs loaded, crc32c=crc32c-generic
[ 5.105229] Key type encrypted registered
[ 5.118261] uart-pl011 3f201000.serial: cts_event_workaround enabled
[ 5.123672] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2
[ 5.125241] Indeed it is in host mode hprt0 = 00021501
[ 5.129121] mmc-bcm2835 3f300000.mmc: mmc_debug:0 mmc_debug2:0
[ 5.132834] mmc-bcm2835 3f300000.mmc: DMA channel allocated
[ 5.178063] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[ 5.181986] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 5.185713] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[ 5.190628] sdhost: log_buf @ (ptrval) (fb853000)
[ 5.193036] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[ 5.210031] random: fast init done
[ 5.242371] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[ 5.249388] of_cfs_init
[ 5.254771] of_cfs_init: OK
[ 5.268715] Freeing unused kernel memory: 1024K
[ 5.271386] Run /init as init process
[ 5.288378] mmc1: new high speed SDIO card at address 0001
[ 5.303238] mmc0: host does not support reading read-only switch, assuming write-enable
[ 5.305906] mmc0: new high speed SDHC card at address 0001
[ 5.311415] mmcblk0: mmc0:0001 EB1QT 29.8 GiB
[ 5.326160] mmcblk0: p1 p2
[ 5.345133] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 5.345253] Indeed it is in host mode hprt0 = 00001101
[ 5.605396] usb 1-1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[ 5.611861] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 5.619010] hub 1-1:1.0: USB hub found
[ 5.624466] hub 1-1:1.0: 4 ports detected
[ 5.965108] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 5.991160] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 6.095795] usb 1-1.1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3
[ 6.105214] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 6.115613] hub 1-1.1:1.0: USB hub found
[ 6.125019] hub 1-1.1:1.0: 3 ports detected
[ 6.485286] dwc_otg_handle_wakeup_detected_intr lxstate = 2
[ 6.638104] systemd[1]: System time before build time, advancing clock.
[ 6.743499] NET: Registered protocol family 10
[ 6.784299] Segment Routing with IPv6
[ 6.822909] systemd[1]: systemd 241.7-2-arch running in system mode. (+PAM +AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid)
[ 6.844557] systemd[1]: Detected architecture arm.
[ 6.884391] systemd[1]: Set hostname to <desolve-rpi3bplus>.
[ 7.085189] usb 1-1.1.1: new high-speed USB device number 4 using dwc_otg
[ 7.225594] usb 1-1.1.1: New USB device found, idVendor=0424, idProduct=7800, bcdDevice= 3.00
[ 7.237234] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 7.443503] random: systemd: uninitialized urandom read (16 bytes read)
[ 7.511888] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): No External EEPROM. Setting MAC Speed
[ 7.520883] libphy: lan78xx-mdiobus: probed
[ 7.531643] random: systemd: uninitialized urandom read (16 bytes read)
[ 7.536447] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): int urb period 64
[ 7.552674] systemd[1]: Listening on Process Core Dump Socket.
[ 7.570087] random: systemd: uninitialized urandom read (16 bytes read)
[ 7.580142] systemd[1]: Created slice User and Session Slice.
[ 7.598322] systemd[1]: Reached target Slices.
[ 7.616232] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[ 7.634328] systemd[1]: Listening on LVM2 poll daemon socket.
[ 7.652475] systemd[1]: Listening on initctl Compatibility Named Pipe.
[ 7.670906] systemd[1]: Listening on udev Control Socket.
[ 7.850515] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.141342] audit: type=1130 audit(1550756733.489:2): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-random-seed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.158138] audit: type=1130 audit(1550756733.509:3): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-sysctl comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.174596] audit: type=1130 audit(1550756733.519:4): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-udev-trigger comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.190929] audit: type=1130 audit(1550756733.539:5): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-journald comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.208266] audit: type=1130 audit(1550756733.559:6): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-tmpfiles-setup-dev comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.266764] systemd-journald[211]: Received request to flush runtime journal from PID 1
[ 8.285699] systemd-journald[211]: File /var/log/journal/c0a6d7ea00024e6f8e07e884b677f154/system.journal corrupted or uncleanly shut down, renaming and replacing.
[ 8.499788] audit: type=1130 audit(1550756733.849:7): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-journal-flush comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.527488] audit: type=1130 audit(1550756733.879:8): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-udevd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 8.634041] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.646441] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[ 8.656480] media: Linux media interface: v0.10
[ 8.658210] [vc_sm_connected_init]: start
[ 8.671400] bcm2835-rng 3f104000.rng: hwrng registered
[ 8.685350] [vc_sm_connected_init]: installed successfully
[ 8.700884] videodev: Linux video capture interface: v2.00
[ 8.770643] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.773993] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.829223] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.830195] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[ 8.923538] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 8.946930] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 9.012585] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 9.026357] usbcore: registered new interface driver brcmfmac
[ 9.066635] Bluetooth: Core ver 2.22
[ 9.079403] NET: Registered protocol family 31
[ 9.091443] Bluetooth: HCI device and connection manager initialized
[ 9.091463] Bluetooth: HCI socket layer initialized
[ 9.114314] Bluetooth: L2CAP socket layer initialized
[ 9.125429] Bluetooth: SCO socket layer initialized
[ 9.139242] Bluetooth: Generic Bluetooth SDIO driver ver 0.1
[ 9.173921] audit: type=1130 audit(1550756734.519:9): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=lvm2-monitor comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 9.248116] random: crng init done
[ 9.259102] random: 7 urandom warning(s) missed due to ratelimiting
[ 9.274096] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[ 9.364619] audit: type=1130 audit(1550756734.709:10): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 9.390262] audit: type=1130 audit(1550756734.739:11): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-fsck@dev-mmcblk0p1 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 9.465571] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[ 9.478757] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[ 9.494080] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[ 9.506808] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[ 9.521602] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[ 9.534543] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[ 11.307699] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
[ 11.739558] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 11.747502] brcmfmac: power management disabled
[ 11.765851] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 11.803805] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 11.903974] 8021q: 802.1Q VLAN Support v1.8
[ 11.912709] 8021q: adding VLAN 0 to HW filter on device eth0
[ 12.449791] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 16.349853] kauditd_printk_skb: 35 callbacks suppressed
[ 16.349865] audit: type=1131 audit(1553420710.393:35): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 58.466169] audit: type=1006 audit(1553422103.377:36): pid=367 uid=0 old-auid=4294967295 auid=1000 tty=(none) old-ses=4294967295 ses=1 res=1
[ 58.550864] audit: type=1130 audit(1553422103.457:37): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=user-runtime-dir@1000 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 58.577163] audit: type=1006 audit(1553422103.487:38): pid=370 uid=0 old-auid=4294967295 auid=1000 tty=(none) old-ses=4294967295 ses=2 res=1
[ 58.814908] audit: type=1130 audit(1553422103.717:39): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=user@1000 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'')

I use my RPi3B+ as Wi-Fi access point - I have hostapd installed on it and share ethernet to my devices via 5GHz. Things were fine until recently - my RPi has been running without reboot for weeks (since January) and no problems were observed. But last week (I don't remember the exact time when this occured) I observed two strange situations (essentially, they are the same). While watching YouTube on my PC internet suddenly stopped working and after some seconds Wi-Fi link disappeared. The first time I simply logged into my RPi via keyboard and HDMI monitor and rebooted it manually with systemctl reboot. NB: I had to wait while hostapd service becomes killed for about 1.5 mins. Yesterday I've observed the same behavior and again while watching YouTube. Weird, because I've already used almost the whole available bandwith of RPi's Wi-Fi link while downloading huge amount of data, compressing the whole SD card contents into archive and so on.

I looked through logs and found that (excerpt from journalctl):
$this->bbcode_second_pass_code('', 'Mar 24 00:58:22 desolve-rpi3bplus kernel: mmc1: Timeout waiting for hardware interrupt.
Mar 24 00:58:12 desolve-rpi3bplus kernel: brcmfmac: brcmf_cfg80211_get_station: GET STA INFO failed, -110
Mar 24 00:58:12 desolve-rpi3bplus kernel: brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
Mar 24 00:58:12 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
Mar 24 00:58:12 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdiod_sglist_rw: CMD53 sg block write failed -110
Mar 24 00:58:12 desolve-rpi3bplus kernel: mmc1: Timeout waiting for hardware interrupt.
Mar 24 00:58:02 desolve-rpi3bplus kernel: brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
Mar 24 00:58:02 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
Mar 24 00:58:02 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdiod_sglist_rw: CMD53 sg block write failed -110
Mar 24 00:58:02 desolve-rpi3bplus kernel: mmc1: Timeout waiting for hardware interrupt.
Mar 24 00:57:52 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
Mar 24 00:57:52 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdiod_sglist_rw: CMD53 sg block write failed -110
Mar 24 00:57:52 desolve-rpi3bplus kernel: mmc1: Timeout waiting for hardware interrupt.
Mar 24 00:57:42 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdio_txfail: sdio error, abort command and terminate frame
Mar 24 00:57:41 desolve-rpi3bplus kernel: brcmfmac: brcmf_sdiod_sglist_rw: CMD53 sg block write failed -84')

I thought initially that my SD card dies (strange, because it's brand new). Then I tried to force fsck on my partitions (I've done it on RPi itself via /forcefsck, tune2fs and other tricks and on my PC by my hands too). But fsck says that filesystems are clean:
$this->bbcode_second_pass_code('', '[viktor@desolve-nettop ~]$ LANG=en_US.UTF-8 sudo fdisk -l /dev/sdc
Disk /dev/sdc: 29.8 GiB, 32010928128 bytes, 62521344 sectors
Disk model: STORAGE DEVICE
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x0bc7e6c4

Device Boot Start End Sectors Size Id Type
/dev/sdc1 2048 206847 204800 100M c W95 FAT32 (LBA)
/dev/sdc2 206848 62521343 62314496 29.7G 83 Linux

[viktor@desolve-nettop ~]$ LANG=en_US.UTF-8 sudo fsck /dev/sdc1
fsck from util-linux 2.33.1
fsck.fat 4.1 (2017-01-24)
/dev/sdc1: 175 files, 13185/51091 clusters

[viktor@desolve-nettop ~]$ LANG=en_US.UTF-8 sudo fsck /dev/sdc2
fsck from util-linux 2.33.1
e2fsck 1.45.0 (6-Mar-2019)
/dev/sdc2: clean, 56175/1949696 files, 599895/7789312 blocks')

If that matters I used USB card reader:
$this->bbcode_second_pass_code('', '[ 34.127319] usb 2-2: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 34.146326] usb 2-2: New USB device found, idVendor=05e3, idProduct=0743, bcdDevice= 8.19
[ 34.146332] usb 2-2: New USB device strings: Mfr=3, Product=4, SerialNumber=5
[ 34.146336] usb 2-2: Product: USB Storage
[ 34.146339] usb 2-2: Manufacturer: Generic
[ 34.146343] usb 2-2: SerialNumber: 000000000819
[ 34.214787] usb-storage 2-2:1.0: USB Mass Storage device detected
[ 34.215064] scsi host4: usb-storage 2-2:1.0
[ 34.215249] usbcore: registered new interface driver usb-storage
[ 34.221853] usbcore: registered new interface driver uas
[ 34.551446] audit: type=1131 audit(1553421740.223:43): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 35.227920] scsi 4:0:0:0: Direct-Access Generic STORAGE DEVICE 0819 PQ: 0 ANSI: 6
[ 35.532481] sd 4:0:0:0: [sdc] 62521344 512-byte logical blocks: (32.0 GB/29.8 GiB)
[ 35.534277] sd 4:0:0:0: [sdc] Write Protect is off
[ 35.534283] sd 4:0:0:0: [sdc] Mode Sense: 23 00 00 00
[ 35.536154] sd 4:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 35.549417] sdc: sdc1 sdc2
[ 35.560315] sd 4:0:0:0: [sdc] Attached SCSI removable disk')

Here is also tune2fs output:
$this->bbcode_second_pass_code('', '[root@desolve-rpi3bplus ~]# tune2fs -l /dev/mmcblk0p2
tune2fs 1.45.0 (6-Mar-2019)
Filesystem volume name: <none>
Last mounted on: /
Filesystem UUID: 24fb8874-4cf9-40d3-b87b-59b0865c119b
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 1949696
Block count: 7789312
Reserved block count: 389465
Free blocks: 7189417
Free inodes: 1893521
First block: 0
Block size: 4096
Fragment size: 4096
Group descriptor size: 64
Reserved GDT blocks: 1024
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Sat Dec 22 23:08:00 2018
Last mount time: Thu Jan 1 03:00:05 1970
Last write time: Thu Jan 1 03:00:05 1970
Mount count: 3
Maximum mount count: 20
Last checked: Sat Dec 22 23:08:00 2018
Check interval: 0 (<none>)
Lifetime writes: 22 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 32
Desired extra isize: 32
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: ced42565-d16c-4a57-ac49-c676b8e52dad
Journal backup: inode blocks
Checksum type: crc32c
Checksum: 0x3f25d8b6')

So I came to conclusion that my SD card is good and problem is not so obvious. Searching on the forum and with google told me that this problem is not distro- and card-related, so it seems like regression started with the latest updates (I believe that the firmwares that were released on this week may contain some bugs). So I'm asking for your help.

Thank you!

EDIT: I've reconstructed some history. The first hang occured on 20.03.2019 and second on 24.03.2019. Here is pacman log from 10.03.2019:
$this->bbcode_second_pass_code('', '[2019-03-10 17:31] [PACMAN] Running 'pacman -Syu'
[2019-03-10 17:31] [PACMAN] synchronizing package lists
[2019-03-10 17:31] [PACMAN] starting full system upgrade
[2019-03-10 17:31] [ALPM] transaction started
[2019-03-10 17:31] [ALPM] upgraded iana-etc (20190221-1 -> 20190308-1)
[2019-03-10 17:31] [ALPM] upgraded e2fsprogs (1.44.5-1 -> 1.44.6-1)
[2019-03-10 17:31] [ALPM] upgraded libatomic_ops (7.6.8-1 -> 7.6.10-1)
[2019-03-10 17:31] [ALPM] upgraded libelf (0.175-1 -> 0.176-1)
[2019-03-10 17:32] [ALPM] upgraded linux-raspberrypi (4.19.25-2 -> 4.19.27-1)
[2019-03-10 17:32] [ALPM] upgraded man-pages (4.16-2 -> 5.00-1)
[2019-03-10 17:32] [ALPM] upgraded raspberrypi-bootloader (20190224-1 -> 20190308-1)
[2019-03-10 17:32] [ALPM] upgraded raspberrypi-bootloader-x (20190224-1 -> 20190308-1)
[2019-03-10 17:32] [ALPM] upgraded raspberrypi-firmware (20190122-1 -> 20190308-1)
[2019-03-10 17:32] [ALPM] upgraded vim-runtime (8.1.0877-1 -> 8.1.0996-1)
[2019-03-10 17:32] [ALPM] upgraded vim (8.1.0877-1 -> 8.1.0996-1)
[2019-03-10 17:32] [ALPM] transaction completed
[2019-03-10 17:32] [ALPM] running '60-linux-raspberrypi.hook'...
[2019-03-10 17:32] [ALPM] running '90-linux-raspberrypi.hook'...
[2019-03-10 17:32] [ALPM-SCRIPTLET] ==> Building image from preset: /etc/mkinitcpio.d/linux-raspberrypi.preset: 'default'
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> -k 4.19.27-1-ARCH -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2019-03-10 17:32] [ALPM-SCRIPTLET] ==> Starting build: 4.19.27-1-ARCH
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [base]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [udev]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [autodetect]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [modconf]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [block]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [filesystems]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [keyboard]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [fsck]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [consolefont]
[2019-03-10 17:32] [ALPM-SCRIPTLET] -> Running build hook: [keymap]
[2019-03-10 17:32] [ALPM-SCRIPTLET] ==> Generating module dependencies
[2019-03-10 17:32] [ALPM-SCRIPTLET] ==> Creating gzip-compressed initcpio image: /boot/initramfs-linux.img
[2019-03-10 17:32] [ALPM-SCRIPTLET] ==> Image generation successful
[2019-03-10 17:32] [ALPM] running 'systemd-update.hook'...
[2019-03-10 17:32] [ALPM] running 'texinfo-install.hook'...
[2019-03-10 17:33] [PACMAN] Running 'pacman -S -u -y --config /etc/pacman.conf --'
[2019-03-10 17:33] [PACMAN] synchronizing package lists
[2019-03-10 17:33] [PACMAN] starting full system upgrade
[2019-03-17 06:18] [PACMAN] Running 'pacman -Syu'
[2019-03-17 06:18] [PACMAN] synchronizing package lists
[2019-03-17 06:18] [PACMAN] starting full system upgrade
[2019-03-17 06:18] [ALPM] transaction started
[2019-03-17 06:18] [ALPM] upgraded bash (5.0.0-1 -> 5.0.002-1)
[2019-03-17 06:18] [ALPM] upgraded e2fsprogs (1.44.6-1 -> 1.45.0-1)
[2019-03-17 06:18] [ALPM] upgraded glib2 (2.58.3-1 -> 2.60.0-1)
[2019-03-17 06:20] [ALPM] upgraded linux-firmware (20190212.28f5f7d-1 -> 20190313.efd2c1c-1)
[2019-03-17 06:20] [ALPM] upgraded s-nail (14.9.11-3 -> 14.9.13-2)
[2019-03-17 06:20] [ALPM] upgraded texinfo (6.5-2 -> 6.6-1)
[2019-03-17 06:20] [ALPM] transaction completed
[2019-03-17 06:20] [ALPM] running 'systemd-daemon-reload.hook'...
[2019-03-17 06:20] [ALPM] running 'systemd-tmpfiles.hook'...
[2019-03-17 06:20] [ALPM] running 'systemd-udev-reload.hook'...
[2019-03-17 06:20] [ALPM] running 'systemd-update.hook'...
[2019-03-17 06:20] [ALPM] running 'texinfo-install.hook'...
[2019-03-17 06:20] [PACMAN] Running 'pacman -S -y -u --config /etc/pacman.conf --'
[2019-03-17 06:20] [PACMAN] synchronizing package lists
[2019-03-17 06:20] [PACMAN] starting full system upgrade
[2019-03-20 13:08] [PACMAN] Running 'pacman -Syu'
[2019-03-20 13:08] [PACMAN] synchronizing package lists
[2019-03-20 13:08] [PACMAN] starting full system upgrade
[2019-03-20 13:08] [ALPM] transaction started
[2019-03-20 13:08] [ALPM] upgraded libseccomp (2.3.3-1 -> 2.4.0-1)
[2019-03-20 13:08] [ALPM] upgraded ca-certificates-mozilla (3.42.1-1 -> 3.43-1)
[2019-03-20 13:08] [ALPM] upgraded libssh2 (1.8.0-3 -> 1.8.1-1)
[2019-03-20 13:08] [ALPM] transaction completed
[2019-03-20 13:08] [ALPM] running 'systemd-update.hook'...
[2019-03-20 13:08] [ALPM] running 'update-ca-trust.hook'...
[2019-03-20 13:09] [PACMAN] Running 'pacman -S -y -u --config /etc/pacman.conf --'
[2019-03-20 13:09] [PACMAN] synchronizing package lists
[2019-03-20 13:09] [PACMAN] starting full system upgrade
[2019-03-20 20:56] [PACMAN] Running 'pacman -Syu'
[2019-03-20 20:56] [PACMAN] synchronizing package lists
[2019-03-20 20:56] [PACMAN] starting full system upgrade
[2019-03-20 20:56] [ALPM] transaction started
[2019-03-20 20:56] [ALPM] upgraded libgpg-error (1.35-1 -> 1.36-1)
[2019-03-20 20:56] [ALPM] transaction completed
[2019-03-20 20:56] [ALPM] running 'systemd-update.hook'...
[2019-03-20 20:56] [ALPM] running 'texinfo-install.hook'...
[2019-03-20 20:56] [PACMAN] Running 'pacman -S -u -y --config /etc/pacman.conf --'
[2019-03-20 20:56] [PACMAN] synchronizing package lists
[2019-03-20 20:56] [PACMAN] starting full system upgrade
[2019-03-20 20:58] [PACMAN] Running 'pacman -S ncdu'
[2019-03-20 20:58] [ALPM] transaction started
[2019-03-20 20:58] [ALPM] installed ncdu (1.14-1)
[2019-03-20 20:58] [ALPM] transaction completed
[2019-03-20 20:58] [ALPM] running 'systemd-update.hook'...
[2019-03-20 21:00] [PACMAN] Running 'pacman -S -c -c --config /etc/pacman.conf --'
[2019-03-23 13:36] [PACMAN] Running 'pacman -S dosfstools'
[2019-03-23 13:36] [ALPM] transaction started
[2019-03-23 13:36] [ALPM] installed dosfstools (4.1-2)
[2019-03-23 13:36] [ALPM] transaction completed
[2019-03-23 13:36] [ALPM] running 'systemd-update.hook'...
[2019-03-23 13:36] [PACMAN] Running 'pacman -Syu'
[2019-03-23 13:36] [PACMAN] synchronizing package lists
[2019-03-23 13:36] [PACMAN] starting full system upgrade
[2019-03-23 13:37] [ALPM] transaction started
[2019-03-23 13:37] [ALPM] upgraded bison (3.2-1 -> 3.3.2-1)
[2019-03-23 13:37] [ALPM] upgraded coreutils (8.30-1 -> 8.31-1)
[2019-03-23 13:37] [ALPM] upgraded firmware-raspberrypi (4-1 -> 5-1)
[2019-03-23 13:37] [ALPM] upgraded iproute2 (4.20.0-1 -> 5.0.0-1)
[2019-03-23 13:37] [ALPM] upgraded linux-raspberrypi (4.19.27-1 -> 4.19.29-1)
[2019-03-23 13:37] [ALPM] upgraded raspberrypi-bootloader (20190308-1 -> 20190320-1)
[2019-03-23 13:37] [ALPM] upgraded raspberrypi-bootloader-x (20190308-1 -> 20190320-1)
[2019-03-23 13:37] [ALPM] upgraded raspberrypi-firmware (20190308-1 -> 20190320-1)
[2019-03-23 13:37] [ALPM] transaction completed
[2019-03-23 13:37] [ALPM] running '60-linux-raspberrypi.hook'...
[2019-03-23 13:37] [ALPM] running '90-linux-raspberrypi.hook'...
[2019-03-23 13:37] [ALPM-SCRIPTLET] ==> Building image from preset: /etc/mkinitcpio.d/linux-raspberrypi.preset: 'default'
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> -k 4.19.29-1-ARCH -c /etc/mkinitcpio.conf -g /boot/initramfs-linux.img
[2019-03-23 13:37] [ALPM-SCRIPTLET] ==> Starting build: 4.19.29-1-ARCH
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [base]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [udev]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [autodetect]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [modconf]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [block]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [filesystems]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [keyboard]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [fsck]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [consolefont]
[2019-03-23 13:37] [ALPM-SCRIPTLET] -> Running build hook: [keymap]
[2019-03-23 13:37] [ALPM-SCRIPTLET] ==> Generating module dependencies
[2019-03-23 13:37] [ALPM-SCRIPTLET] ==> Creating gzip-compressed initcpio image: /boot/initramfs-linux.img
[2019-03-23 13:37] [ALPM-SCRIPTLET] ==> Image generation successful
[2019-03-23 13:37] [ALPM] running 'systemd-update.hook'...
[2019-03-23 13:37] [ALPM] running 'texinfo-install.hook'...
[2019-03-23 13:58] [PACMAN] Running 'pacman -S mlocate'
[2019-03-23 13:58] [ALPM] transaction started
[2019-03-23 13:58] [ALPM] installed mlocate (0.26.git.20170220-1)
[2019-03-23 13:58] [ALPM] transaction completed
[2019-03-23 13:58] [ALPM] running 'systemd-daemon-reload.hook'...
[2019-03-23 13:58] [ALPM] running 'systemd-sysusers.hook'...
[2019-03-23 13:58] [ALPM] running 'systemd-update.hook'...
[2019-03-23 14:07] [PACMAN] Running 'pacman -S -c -c --config /etc/pacman.conf --'
[2019-03-23 14:26] [PACMAN] Running 'pacman -S rsync'
[2019-03-23 14:26] [ALPM] transaction started
[2019-03-23 14:26] [ALPM] installed rsync (3.1.3-1)
[2019-03-23 14:26] [ALPM] transaction completed
[2019-03-23 14:26] [ALPM] running 'systemd-daemon-reload.hook'...
[2019-03-23 14:26] [ALPM] running 'systemd-update.hook'...
[2019-03-23 14:29] [PACMAN] Running 'pacman -Scc'
[2019-03-24 01:07] [PACMAN] Running 'pacman -Syu'
[2019-03-24 01:07] [PACMAN] synchronizing package lists
[2019-03-24 01:07] [PACMAN] starting full system upgrade
[2019-03-24 13:14] [PACMAN] Running 'pacman -S dtc'
[2019-03-24 13:14] [ALPM] transaction started
[2019-03-24 13:14] [ALPM] installed dtc (1.5.0-1)
[2019-03-24 13:14] [ALPM] transaction completed
[2019-03-24 13:14] [ALPM] running 'systemd-update.hook'...')

As you can see, at 10.03.2019 there were two critical updates:
$this->bbcode_second_pass_code('', '[2019-03-10 17:32] [ALPM] upgraded linux-raspberrypi (4.19.25-2 -> 4.19.27-1)
[2019-03-10 17:32] [ALPM] upgraded raspberrypi-firmware (20190122-1 -> 20190308-1)')
but RPi has been working for a week after that (I always reboot after installing such important updates). And on 17.03.2019 there was another update:
$this->bbcode_second_pass_code('', '[2019-03-17 06:20] [ALPM] upgraded linux-firmware (20190212.28f5f7d-1 -> 20190313.efd2c1c-1)')
After that the first hang observed on 20.03.2019 - only after 3 days. I've rebooted RPi several times on 23.03.2019 and the next hang was observed almost immediately - after 12 hours on 24.03.2019. Seems like linux-firmware-20190313.efd2c1c has introduced some bug... It's interesting to know your experience.

[jazztickets]

I've experienced strange things as well, though the console would get spammed with message along the lines of "
BUG: scheduling while atomic". I thought it was the SD card as well. I've tried reinstalling 3 times now and after a few reboots problems kept coming up when trying to poweroff or reboot.

It's funny cause I have another RPi3b+ (by Element14, not the shitty CanaKit one that keeps having problems) with a better power supply and it has no problems.. yet.

Gonna try out Raspbian for now like a sellout and see if that has the same problem.

Good power supply: https://www.amazon.com/gp/product/B01N3 ... UTF8&psc=1
Good rpi3b+: https://www.amazon.com/dp/B07BDR5PDW/re ... MCb4WKPPHJ
Problematic rpi3b+: https://www.amazon.com/dp/B07BC7BMHY/re ... MCbT4FA5MM