SD card boot gets stuck often resulting in board not booting. #15
Description
I am using starfive_vic7100_evb_sd_net_defconfig for kernel and it results in kernel hangs during boot at times, almost everytime the system is rebooted. Following message is seen when the kernel gets stuck
[ 2.216987] sdhci: Secure Digital Host Controller Interface driver
[ 2.223206] sdhci: Copyright(c) Pierre Ossman
[ 2.227616] Synopsys Designware Multimedia Card Interface Driver
[ 2.233929] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.240680] dw_mmc 10000000.sdio0: IDMAC supports 32-bit address mode.
[ 2.241157] NET: Registered protocol family 10
[ 2.247368] dw_mmc 10000000.sdio0: Using internal DMA controller.
[ 2.257870] dw_mmc 10000000.sdio0: Version ID is 290a
[ 2.263093] dw_mmc 10000000.sdio0: DW MMC controller at irq 32,32 bit host data width,32 deep fifo
[ 2.272303] Segment Routing with IPv6
[ 2.272351] mmc_host mmc0: card is polling.
[ 2.276110] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 2.280826] dw_mmc 10010000.sdio1: IDMAC supports 32-bit address mode.
[ 2.287217] NET: Registered protocol family 17
[ 2.292709] dw_mmc 10010000.sdio1: Using internal DMA controller.
[ 2.297470] 9pnet: Installing 9P2000 support
[ 2.303231] dw_mmc 10010000.sdio1: Version ID is 290a
[ 2.307588] Key type dns_resolver registered
[ 2.312602] dw_mmc 10010000.sdio1: DW MMC controller at irq 33,32 bit host data width,32 deep fifo
[ 2.316984] debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers
[ 2.326026] mmc_host mmc1: card is non-removable.
[ 2.340468] dw-apb-uart 12440000.serial: forbid DMA for kernel console
[ 2.491434] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz, actual 400000HZ div = 125)
[ 2.551443] mmc_host mmc1: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz, actual 400000HZ div = 125)
[ 2.771949] Waiting for root device /dev/mmcblk0p2...
[ 2.811404] dw_mmc 10010000.sdio1: Unexpected interrupt latency
I am now building with https://github.com/starfive-tech/freelight-u-sdk/blob/starfive/conf/sdk_210209_defconfig and that seems to result in better behavior where it does not get stuck in SD card issues as much.
but I do see another issue
[ 1059.839470] Showing busy workqueues and worker pools:
[ 1059.844509] workqueue events: flags=0x0
[ 1059.848329] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=5/256 refcnt=6
[ 1059.855104] in-flight: 50:request_firmware_work_func
[ 1059.860413] pending: delayed_fput, do_free_init, deferred_probe_work_func, rht_deferred_worker
[ 1059.869397] workqueue events_unbound: flags=0x2
[ 1059.873912] pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=5
[ 1059.880250] in-flight: 43:fsnotify_mark_destroy_workfn BAR(107), 7:fsnotify_connector_destroy_workfn
[ 1059.889726] workqueue events_freezable: flags=0x4
[ 1059.894409] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 1059.901184] pending: mmc_rescan
[ 1059.904685] workqueue events_power_efficient: flags=0x80
[ 1059.909976] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
[ 1059.916748] pending: gc_worker, reg_check_chans_work [cfg80211]
[ 1059.923849] workqueue rcu_gp: flags=0x8
[ 1059.927671] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 1059.934449] pending: process_srcu
[ 1059.938121] workqueue mm_percpu_wq: flags=0x8
[ 1059.942462] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
[ 1059.949235] pending: vmstat_update
[ 1059.953005] pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=1054s workers=3 idle: 35 17
[ 1059.960659] pool 4: cpus=0-1 flags=0x4 nice=0 hung=20s workers=4 idle: 119 49
[ 1028.471352] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 1023s!