Hi, Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx> writes: >> Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx> writes: >>> On 16.01.2016 12:40, Ivaylo Dimitrov wrote: >>>> Hi, >>>> >>>> On 16.01.2016 00:48, Tony Lindgren wrote: >>>>> Hi all, >>>>> >>>>> Looks like there's some issue with the USB gadgets and configfs. >>>>> >>>>> I'm seeing rmmod of the UDC driver cause a warning and then reboot >>>>> hangs the system. This happens at least with v4.4, and I've reproduced >>>>> it with dwc3 and musb so it seems to be generic. >>>>> >>>> >>>> Having configfs is not needed, disabling usb gadgets (# >>>> CONFIG_USB_MUSB_GADGET is not set) seems to solved at least poweroff >>>> hang issue on N900. Also, g_nokia is not a module in the config I use, >>>> so I guess the problem is not related whether gadgets are modular or >>>> not. Unfortunately I was not able to test reboot, as rootfs became >>>> corrupted after the first poweroff :( . So it looks like my theory that >>>> onenand corruption on N900 is because poweroff/reboot hangs is wrong. >>>> >>>> Ivo >>> >>> >>> Is there any progress on the issue? >> > > Doing Nokia-N900:/sys/bus/platform/drivers/musb-hdrc# echo > musb-hdrc.0.auto > unbind results in: > > <1>[ 1418.511260] Unable to handle kernel paging request at virtual > address 6c6c757a > <7>[ 1418.677215] pvr: Xorg: cleaning up 49 unfreed resources > <1>[ 1418.683349] pgd = c0004000 > <1>[ 1418.739959] [6c6c757a] *pgd=00000000 > <0>[ 1418.746307] Internal error: Oops: 5 [#1] PREEMPT ARM > <4>[ 1418.753997] Modules linked in: sha256_generic hmac drbg ansi_cprng > ctr ccm vfat fat rfcomm sd_mod scsi_mod bnep bluetooth omaplfb pvrsrvkm > ipv6 bq2415x_charger uinput radio_platform_si4713 joydev cmt_speech > hsi_char video_bus_switch arc4 wl1251_spi wl1251 isp1704_charger > gpio_keys mac80211 smc91x mii cfg80211 omap_wdt crc7 omap_sham tsc2005 > tsc200x_core bq27xxx_battery_i2c si4713 adp1653 tsl2563 leds_lp5523 > leds_lp55xx_common bq27xxx_battery rtc_twl twl4030_wdt et8ek8 ad5820 > v4l2_common smiaregs twl4030_vibra videodev ff_memless lis3lv02d_i2c > lis3lv02d media input_polldev omap_ssi_port ti_soc_thermal nokia_modem > ssi_protocol omap_ssi hsi rx51_battery > <4>[ 1418.835906] CPU: 0 PID: 53 Comm: file-storage Not tainted > 4.5.0-rc5+ #59 > <4>[ 1418.846130] Hardware name: Nokia RX-51 board > <4>[ 1418.853820] task: ceb8a300 ti: ce008000 task.ti: ce008000 > <4>[ 1418.862792] PC is at handle_exception+0xa8/0x418 > <4>[ 1418.871002] LR is at recalc_sigpending+0x18/0x7c > <4>[ 1418.879241] pc : [<c031d0e4>] lr : [<c0037b84>] psr: 80000013 > <4>[ 1418.879241] sp : ce009ea0 ip : 00000000 fp : 00000000 > <4>[ 1418.898284] r10: 00000000 r9 : 00000000 r8 : 00000000 > <4>[ 1418.907287] r7 : c031d8d0 r6 : 6c6c7566 r5 : 00000000 r4 : cebe1600 > <4>[ 1418.917663] r3 : 6f642820 r2 : 00000000 r1 : 00000000 r0 : 00000000 > <4>[ 1418.928039] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM > Segment none > <4>[ 1418.939025] Control: 10c5387d Table: 8e244019 DAC: 00000051 > <0>[ 1418.948516] Process file-storage (pid: 53, stack limit = 0xce008210) > <0>[ 1418.958679] Stack: (0xce009ea0 to 0xce00a000) > <0>[ 1418.966735] 9ea0: 0000000f 00000000 00000000 00000b07 00000000 > 00000001 000003ff 00000001 > <0>[ 1418.978973] 9ec0: ceb8a300 ceb8a300 00000000 c004841c 00000000 > 00000002 ce888000 c0451a50 > <0>[ 1418.991180] 9ee0: ffffffff 00000000 00000000 00000008 cebe1600 > 00000001 c0717dd0 00000001 > <0>[ 1419.003387] 9f00: 00000000 00000000 ce009f14 c044ddf4 00000000 > c031c020 00000042 ce009f30 > <0>[ 1419.015686] 9f20: ce009f30 00000000 cebe1600 c031d958 00000000 > c044d864 a0000013 00000000 > <0>[ 1419.027923] 9f40: cebe1600 c031d8d0 cebfa100 cebfa100 00000000 > cebe1600 c031d8d0 00000000 > <0>[ 1419.040130] 9f60: 00000000 00000000 00000000 c00474e4 dc4d900d > 00000000 31bc92e7 cebe1600 > <0>[ 1419.052429] 9f80: 00000000 ce009f84 ce009f84 00000000 ce009f90 > ce009f90 ce009fac cebfa100 > <0>[ 1419.064697] 9fa0: c0047418 00000000 00000000 c000f218 00000000 > 00000000 00000000 00000000 > <0>[ 1419.076934] 9fc0: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > <0>[ 1419.089050] 9fe0: 00000000 00000000 00000000 00000000 00000013 > 00000000 00002000 30000891 > <4>[ 1419.101043] [<c031d0e4>] (handle_exception) from [<c031d958>] > (fsg_main_thread+0x88/0x13dc) > <4>[ 1419.113189] [<c031d958>] (fsg_main_thread) from [<c00474e4>] > (kthread+0xcc/0xe0) > <4>[ 1419.124267] [<c00474e4>] (kthread) from [<c000f218>] > (ret_from_fork+0x14/0x3c) > <0>[ 1419.135101] Code: 1a000015 ea000040 e5946038 e0866285 (e5963014) > <4>[ 1419.330841] ---[ end trace 3377457e25b0732c ]--- > <0>[ 1419.340972] Kernel panic - not syncing: Fatal exception > > weirdly, I have that log only in mtdoops, but not in dmesg. However, > after that oops "reboot" command does not hang, but reboots the device. So, what is handle_exception + 0xa8 ? You can figure that out either with gdb or addr2line assuming your vmlinux has dbg symbols. For gdb you would: gdb vmlinux (gdb) l *(handle_exception + 0xa8) cheers -- balbi
Attachment:
signature.asc
Description: PGP signature
