[Miscellaneous Android Development] blahmartinblah:
I've lost track too, sorry. I will have to revert back to previous versions to confirm that. (including the recovery, which also seems to exhibit the same issue... but uses it's own kernel right?) Here is the log from today's boot.img. I confirm the SD card was not accessible after start-up.

[ 0.600160] mmc1: no vqmmc regulator found
[ 0.600172] mmc1: no vmmc regulator found
[ 0.600441] mmc1: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 18 width 0 timing 0
[ 0.600450] mmc1: sdhci_msm_check_power_status: request 2 curr_pwr_state 0 curr_io_level 0
[ 0.600473] mmc1: Received IRQ(253), status=0x2
[ 0.602179] mmc1: Handled IRQ(253), ret=0, ack=0x1
[ 0.602196] mmc1: sdhci_msm_check_power_status: request 2 done
[ 0.613222] mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 18 width 0 timing 0
[ 0.613287] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.624334] mmc1: sdhci_msm_check_power_status: request 8 curr_pwr_state 2 curr_io_level 8
[ 0.624339] mmc1: sdhci_msm_check_power_status: request 8 done
[ 0.629868] mmc1: SDHCI controller on 7864900.sdhci [7864900.sdhci] using 32-bit ADMA
[ 0.676828] mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 timing 0
[ 0.676847] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.676854] mmc1: sdhci_msm_check_power_status: request 1 curr_pwr_state 2 curr_io_level 8
[ 0.676870] mmc1: Received IRQ(253), status=0x1
[ 0.677474] mmc1: Handled IRQ(253), ret=0, ack=0x1
[ 0.677491] mmc1: sdhci_msm_check_power_status: request 1 done
[ 0.677500] mmc1: sdhci_msm_check_power_status: request 1 curr_pwr_state 1 curr_io_level 4
[ 0.677507] mmc1: sdhci_msm_check_power_status: request 1 done
[ 0.677520] mmc1: request to disable clocks
[ 0.679880] mmc1: clock 0Hz busmode 1 powermode 1 cs 0 Vdd 18 width 0 timing 0
[ 0.681164] mmc1: sdhci_msm_enable_controller_clock: enabled controller clock
[ 0.681172] mmc1: sdhci_msm_check_power_status: request 2 curr_pwr_state 1 curr_io_level 4
[ 0.681185] mmc1: Received IRQ(253), status=0x2
[ 0.682934] mmc1: Handled IRQ(253), ret=0, ack=0x1
[ 0.682951] mmc1: sdhci_msm_check_power_status: request 2 done
[ 0.693097] mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 18 width 0 timing 0
[ 0.693104] mmc1: request to enable clocks
[ 0.693169] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.703520] mmc1: sdhci_msm_check_power_status: request 8 curr_pwr_state 2 curr_io_level 8
[ 0.703527] mmc1: sdhci_msm_check_power_status: request 8 done
[ 0.710030] mmc1: clock 400000Hz busmode 1 powermode 2 cs 1 Vdd 18 width 0 timing 0
[ 0.710047] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.712243] mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 18 width 0 timing 0
[ 0.712259] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.714235] mmc1: req failed (CMD5): -110, retrying...
[ 0.714710] mmc1: req failed (CMD5): -110, retrying...
[ 0.715182] mmc1: req failed (CMD5): -110, retrying...
[ 0.717537] mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 18 width 0 timing 0
[ 0.717555] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.718067] mmc1: clock 0Hz busmode 1 powermode 0 cs 0 Vdd 0 width 0 timing 0
[ 0.718084] mmc1: sdhci_msm_set_uhs_signaling-clock:400000 uhs mode:0 ctrl_2:0x0
[ 0.718091] mmc1: sdhci_msm_check_power_status: request 1 curr_pwr_state 2 curr_io_level 8
[ 0.718111] mmc1: Received IRQ(253), status=0x1
[ 0.718739] mmc1: Handled IRQ(253), ret=0, ack=0x1
[ 0.718755] mmc1: sdhci_msm_check_power_status: request 1 done
[ 0.718764] mmc1: sdhci_msm_check_power_status: request 1 curr_pwr_state 1 curr_io_level 4
[ 0.718772] mmc1: sdhci_msm_check_power_status: request 1 done
[ 0.718785] mmc1: request to disable clocks
[ 0.915596] mmc1: frequency set to 0 in disable function, this means the clock is already disabled.