gistfile1.txt

# `insmod …`

[   72.789977] ledchain: pwm_base=0xB0005000
[   72.794501] ledchain: v2 - Device: /dev/ledchain0
[   72.799279] ledchain: - PWM channel    : 0
[   72.803486] ledchain: - PWM buffer size: 132
[   72.807812] ledchain: - Number of LEDs : 10
[   72.812060] ledchain: - Inverted       : 0
[   72.816210] ledchain: - LED type       : WS2812
[   72.820810] ledchain: - Max retries    : 3
[   72.824960] ledchain: - Max Tpassive   : 5100 nS

# `echo … > /dev/ledchain0`

[   86.370528] Unhandled kernel unaligned access[#1]:
[   86.375411] CPU: 0 PID: 1766 Comm: ash Not tainted 4.14.81 #0
[   86.381238] task: 81c6a680 task.stack: 8312e000
[   86.385827] $ 0   : 00000000 00000001 00000002 822f6bbc
[   86.391133] $ 4   : 823ed52c 00000006 823ed52c 8312ff08
[   86.396438] $ 8   : 00000001 800136e0 800d0194 820cc960
[   86.401743] $12   : 7faf61e8 00000000 00000000 77f0d2c0
[   86.407048] $16   : 00000006 00000000 00000006 77f04050
[   86.412353] $20   : 8312ff08 77f03000 77f04050 00000000
[   86.417658] $24   : 00000fa4 77e72020                  
[   86.422964] $28   : 8312e000 8312fdf8 00000000 822f6be0
[   86.428270] Hi    : 00000000
[   86.431186] Lo    : 00000000
[   86.434117] epc   : 822f68cc update_leds+0x38/0x7b8 [p44_ledchain]
[   86.440385] ra    : 822f6be0 update_leds+0x34c/0x7b8 [p44_ledchain]
[   86.446733] Status: 1100e403	KERNEL EXL IE 
[   86.450984] Cause : 00800010 (ExcCode 04)
[   86.455044] BadVA : 00000006
[   86.457962] PrId  : 00019655 (MIPS 24KEc)
[   86.462020] Modules linked in: p44_ledchain pppoe ppp_async option w1_therm w1_gpio uvcvideo usb_wwan snd_usb_audio pppox ppp_generic pl2303 nf_conntrack_ipv6 lzo iptable_nat ipt_REJECT ipt_MASQUERADE ftdi_sio cp210x ch341 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD wire videobuf2_v4l2 usbserial usblp usbhid ums_usbat ums_sddr55 ums_sddr09 ums_karma ums_jumpshot ums_isd200 ums_freecom ums_datafab ums_cypress ums_alauda uinput spidev snd_usbmidi_lib slhc rfcomm pwm_mediatek_ramips nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack lzo_decompress lzo_compress iptable_mangle
[   86.534909]  iptable_filter ip_tables hwmon hidp hid_generic hci_uart crc_ccitt cdc_acm btusb btintel bnep bluetooth snd_soc_simple_card snd_soc_simple_card_utils snd_soc_ralink_i2s snd_soc_wm8960 videobuf2_vmalloc videobuf2_memops videobuf2_core hid v4l2_common videodev evdev snd_soc_core mt_wifi ralink_gdma virt_dma ledtrig_oneshot ledtrig_morse ledtrig_heartbeat ledtrig_gpio ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables nfs msdos snd_pcm_dmaengine snd_compress snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_rawmidi snd_seq_device snd_hwdep snd input_core soundcore vfat fat ntfs lockd sunrpc grace configfs autofs4 nls_utf8 nls_iso8859_1 nls_cp437 regmap_spi regmap_i2c dma_shared_buffer ecdh_generic kpp ecb cmac crypto_acompress mmc_block
[   86.606758]  usb_storage sdhci_pltfm sdhci mtk_sd mmc_core leds_gpio ohci_platform ohci_hcd ledtrig_transient ehci_platform sd_mod scsi_mod ehci_hcd gpio_button_hotplug ext4 jbd2 mbcache exfat usbcore nls_base usb_common crc16 aead crypto_null cryptomgr crc32c_generic crypto_hash
[   86.631967] Process ash (pid: 1766, threadinfo=8312e000, task=81c6a680, tls=77f0edc0)
[   86.639898] Stack : 83a81390 83644dd0 8312fe00 8312fe00 00000003 8312fef4 00000001 81c8d000
[   86.648384]         77f03000 0000000b 00000006 00000000 00000006 77f04050 8312ff08 77f03000
[   86.656867]         77f03000 00000000 00000000 822f6be0 00000003 7faf636c 00000000 00000000
[   86.665350]         83b85d20 800cfd1c 77f03000 00000000 00000000 80027c84 00000000 00000000
[   86.673833]         00000000 ffffffea 00000003 00000007 00000000 00000000 00000000 00000000
[   86.682316]         ...
[   86.684798] Call Trace:
[   86.687283] [<822f68cc>] update_leds+0x38/0x7b8 [p44_ledchain]
[   86.693202] [<822f6be0>] update_leds+0x34c/0x7b8 [p44_ledchain]
[   86.699200] Code: 8cc20008  0080b025  00c02025 <8c530004> 8cc2000c  00b3001b  00c08025  00002812  00a2902a 
[   86.709106] 
[   86.710938] ---[ end trace c58ecc586fc20216 ]---
[   86.718857] Kernel panic - not syncing: Fatal exception
[   86.725653] Rebooting in 3 seconds..