On 02/03/20, Oliver Graute wrote: > Hello, > > I have on of these FT6336G Touch Panels here and I try to get it work > with the ft6236 driver. It comes up with model identification "0x11". So > I added that identification to the switch case in > edt_ft5x06_ts_identify(). But it crashes directly after the probe with a > corrupted stack. No clue why. Some ideas? I still observe sometimes crashes with ft6236G. When it occurs it is always a stack corruption in the probe function on bootup. No clue why stack is corrupted sometimes. Is this related to the buggy revision field? Some further suggestions for debugging this? [ 3.806780] edt_ft5x06 1-0038: Model "EP0110M09", Rev. "�", 0x0 sensors [ 3.808468] at24 2-0050: 2-0050 supply vcc not found, using dummy regulator [ 3.814864] DEBUG: edt_ft5x06_ts_probe 1201 [ 3.826215] DEBUG: edt_ft5x06_ts_probe 1211 [ 3.830512] DEBUG: edt_ft5x06_ts_probe 1214 [ 3.834904] input: EP0110M09 as /devices/platform/bus@5a000000/5a820000.i2c/i2c-1/1-0038/input/input0 [ 3.844164] at24 2-0050: 4096 byte 24c32 EEPROM, writable, 1 bytes/write [ 3.844264] DEBUG: edt_ft5x06_ts_probe 1222 [ 3.850919] i2c i2c-2: LPI2C adapter registered [ 3.855187] edt_ft5x06 1-0038: EDT FT5x06 initialized: IRQ 55, WAKE pin -1, Reset pin -1. [ 3.867878] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: edt_ft5x06_ts_probe+0x5c4/0xb00 [ 3.878579] CPU: 4 PID: 115 Comm: kworker/u10:2 Not tainted 5.6.0-rc1-next-20200214-00057-g9e78f1560095-dirty #99 [ 3.888838] Hardware name: Advantech iMX8QM DMSSE20 (DT) [ 3.894153] Workqueue: events_unbound async_run_entry_fn [ 3.899465] Call trace: [ 3.901909] dump_backtrace+0x0/0x1c0 [ 3.905571] show_stack+0x14/0x20 [ 3.908884] dump_stack+0xb4/0xfc [ 3.912202] panic+0x158/0x320 [ 3.914929] mmc0: SDHCI controller on 5b010000.mmc [5b010000.mmc] using ADMA [ 3.915254] print_tainted+0x0/0xa8 [ 3.915262] edt_ft5x06_ts_probe+0x5c4/0xb00 [ 3.930063] i2c_device_probe+0x2d0/0x2f8 [ 3.934074] really_probe+0xd8/0x438 [ 3.935270] sdhci-esdhc-imx 5b030000.mmc: Got CD GPIO [ 3.937642] driver_probe_device+0xdc/0x130 [ 3.937648] __device_attach_driver+0x88/0x108 [ 3.942717] sdhci-esdhc-imx 5b030000.mmc: Got WP GPIO [ 3.946872] bus_for_each_drv+0x74/0xc0 [ 3.946875] __device_attach_async_helper+0xb4/0x100 [ 3.946877] async_run_entry_fn+0x40/0x1a0 [ 3.946883] process_one_work+0x19c/0x320 [ 3.973252] worker_thread+0x48/0x420 [ 3.976913] kthread+0xf0/0x120 [ 3.980051] ret_from_fork+0x10/0x18 [ 3.983634] SMP: stopping secondary CPUs [ 3.987558] Kernel Offset: disabled [ 3.991048] CPU features: 0x10002,2100600c [ 3.995148] Memory Limit: none [ 3.998201] ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: edt_ft5x06_ts_probe+0x5c4/0xb00 ]--- Best Regards, Oliver
