** Changed in: linux-starfive-5.17 (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1983019
Title:
Pinctrl driver has a race condition bug
Status in linux-starfive-5.17 package in Ubuntu:
Fix Released
Status in linux-starfive-5.17 source package in Jammy:
Fix Released
Bug description:
[Impact]
* The pinctrl-starfive driver has a race when initializing groups and
functions that may result in other drivers not being able to initialize.
* If this happens to the mmc driver the board will fail to boot.
* This is an example of this happening:
Loading device tree blob...
[ 13.933777] pinctrl-starfive 11910000.pinctrl: does not have pin group
sdio0-0.sdio-pins
[ 13.941940] pinctrl-starfive 11910000.pinctrl: invalid group
sdio0-0.sdio-pins in map table
[ 13.957656] pinctrl-starfive 11910000.pinctrl: does not have pin group
sdio0-0.sdio-pins
[ 13.965801] pinctrl-starfive 11910000.pinctrl: could not map group config
for "sdio0-0.sdio-pins"
[ 13.974746] Unable to handle kernel NULL pointer dereference at virtual
address 0000000000000000
[ 13.983581] Oops [#1]
[ 13.985853] Modules linked in: phylink dw_mmc_pltfm
clk_starfive_jh7100_audio reset_starfive_jh7100_audio(+) dw_mc
[ 13.986227] starfive-drm soc:display-subsystem: bound 12000000.crtc (ops
starfive_crtc_component_ops)
[ 13.996286] CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted
5.17.0-1004-starfive #5-Ubuntu
[ 13.996297] Hardware name: StarFive VisionFive V1 (DT)
[ 13.996305] Workqueue: events_unbound async_run_entry_fn
[ 14.023868] epc : strcmp+0x12/0x36
[ 14.027274] ra : pinmux_func_name_to_selector+0x5a/0x76
[ 14.032583] epc : ffffffff80521224 ra : ffffffff805307d8 sp :
ffffffd88006bb00
[ 14.039781] gp : ffffffff81e32e30 tp : ffffffd87ffd0000 t0 :
0000000000000040
[ 14.046988] t1 : 0000000000000000 t2 : ffffffff81004ed4 s0 :
ffffffd88006bb10
[ 14.054190] s1 : 0000000000000006 a0 : ffffffd9ff1d3cb8 a1 :
0000000000000000
[ 14.061392] a2 : 0000000000000000 a3 : 0000000000000000 a4 :
ffffffd88c45ce00
[ 14.068594] a5 : 0000000000000073 a6 : ffffffd88c45cdb0 a7 :
ffffffd88c45ce08
[ 14.075795] s2 : ffffffd897c53000 s3 : 0000000000000007 s4 :
ffffffd9ff1d3cb8
[ 14.082996] s5 : ffffffff810776f0 s6 : 0000000000000000 s7 :
ffffffd8801aa5c0
[ 14.090199] s8 : ffffffd890fdf780 s9 : fffffffffffffdfb s10:
ffffffff81d80008
[ 14.097400] s11: 0000000000000000 t3 : 0000000000000002 t4 :
0000000000000402
[ 14.104600] t5 : ffffffd897c53040 t6 : ffffffd897c53048
[ 14.109896] status: 0000000200000120 badaddr: 0000000000000000 cause:
000000000000000d
[ 14.117986] ---[ end trace 0000000000000000 ]---
[Test Plan]
* Unfortunately this is a race that happens rarely so rebooting the board
several times is the only known way to reproduce.
[Where problems could occur]
* The fix could get the locking wrong and lock up the machine at
boot.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-starfive-5.17/+bug/1983019/+subscriptions
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