Tool/software: Linux
When i execute 'rmmod ti_cpsw' the operations fails with the following in dmesg:
[ 40.401431] bond0: Releasing active interface eth1 [ 40.456776] bond0: Releasing backup interface eth0 [ 40.489720] Unable to handle kernel NULL pointer dereference at virtual addre ss 0000000d [ 40.489753] pgd = dd454000 [ 40.489767] [0000000d] *pgd=00000000 [ 40.489797] Internal error: Oops: 5 [#1] SMP ARM [ 40.489813] Modules linked in: usb_f_acm u_serial libcomposite udc_core bondi ng smsc davinci_mdio evdev musb_dsps joydev musb_hdrc ti_am335x_adc kfifo_buf in dustrialio tilcdc drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops d rm ti_cpsw(-) cpsw_ale cpsw_common davinci_cpdma omap_rng omap_aes omap_sham cfb fillrect cfbimgblt cfbcopyarea c_can_platform c_can can_dev rng_core 8250_omap m usb_am335x rtc_omap cpufreq_dt ti_am335x_tsc thermal_sys ti_am335x_tscadc omap_w dt leds_gpio hwmon pwm_bl led_class ledtrig_heartbeat autofs4 [ 40.490128] CPU: 0 PID: 378 Comm: rmmod Tainted: G W 4.4.93-dirt y #22 [ 40.490143] Hardware name: Generic AM33XX (Flattened Device Tree) [ 40.490157] task: dd180d40 ti: dd44c000 task.ti: dd44c000 [ 40.490190] PC is at omap_device_idle+0x18/0x9c [ 40.490207] LR is at _od_runtime_suspend+0x24/0x28 [ 40.490223] pc : [<c0029560>] lr : [<c0029608>] psr: a00f0013 sp : dd44dc68 ip : dd44dc88 fp : dd44dc84 [ 40.490238] r10: c08ca100 r9 : 00000000 r8 : 00000008 [ 40.490250] r7 : 00000000 r6 : 00000000 r5 : dd1d98a0 r4 : dd1d9810 [ 40.490263] r3 : 00000000 r2 : 00000000 r1 : dd1811a8 r0 : dd1d9800 [ 40.490279] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 40.490293] Control: 10c5387d Table: 9d454019 DAC: 00000051 [ 40.490307] Process rmmod (pid: 378, stack limit = 0xdd44c218) [ 40.490320] Stack: (0xdd44dc68 to 0xdd44e000) [ 40.490342] dc60: dd1d9810 dd1d98a0 c00295e4 00000000 dd44d c9c dd44dc88 [ 40.490363] dc80: c0029608 c0029554 dd1d9810 dd1d98a0 dd44dcbc dd44dca0 c03c7 350 c00295f0 [ 40.490384] dca0: dd1d9810 c00295e4 c08ca100 00000000 dd44dcdc dd44dcc0 c03c7 3ac c03c7328 [ 40.490405] dcc0: dd1d9810 c00295e4 c08ca100 00000000 dd44dd2c dd44dce0 c03c7 fd8 c03c7390 [ 40.490426] dce0: c064d518 0000000c dd1d994c 600f0093 dd44dd2c dd44dd00 c0082 b54 c064d4dc [ 40.490446] dd00: 00000000 dd1d9810 00000000 00000004 00000000 dd1d994c dd44c 000 00000000 [ 40.490467] dd20: dd44dd54 dd44dd30 c03c8568 c03c7ee0 dd1d9810 00000004 dd1d9 8a0 600f0013 [ 40.490488] dd40: c112e770 dd44c000 dd44dd74 dd44dd58 c03c7844 c03c8460 dd1d9 810 dd1d9810 [ 40.490509] dd60: c09201f0 de10c010 dd44dd8c dd44dd78 bf1d21a8 c03c77e8 dd1d9 810 dd1d9810 [ 40.490530] dd80: dd44dda4 dd44dd90 c03c0170 bf1d2180 dd1d9810 bf1d2bb0 dd44d dbc dd44dda8 [ 40.490551] dda0: c03be2f0 c03c0154 dd1d9844 dd1d9810 dd44ddd4 dd44ddc0 c03be 38c c03be258 [ 40.490572] ddc0: de02a84c dd1d9810 dd44ddf4 dd44ddd8 c03bdb70 c03be370 dd1d9 810 00000000 [ 40.490593] dde0: dd1d9818 de10c010 dd44de2c dd44ddf8 c03baad4 c03bda90 00000 000 de0f60c0 [ 40.490615] de00: dd44de68 00000000 c03ba590 dd1d9810 00000000 bf0a9744 00000 081 c000fce4 [ 40.490636] de20: dd44de44 dd44de30 c03bac28 c03ba9cc 00000000 00000000 dd44d e54 dd44de48 [ 40.490657] de40: c04cecbc c03bac20 dd44de64 dd44de58 bf0a9758 c04cecb4 dd44d e8c dd44de68 [ 40.490677] de60: c03ba690 bf0a9750 de0f60c0 dd229670 dd25d000 dd25d000 de10c 010 de10c044 [ 40.490699] de80: dd44dea4 dd44de90 bf0a97e0 c03ba660 de10c010 de10c010 dd44d ebc dd44dea8 [ 40.490720] dea0: c03c0170 bf0a976c de10c010 bf0aea88 dd44ded4 dd44dec0 c03be 2f0 c03c0154 [ 40.490741] dec0: de10c010 bf0aea88 dd44def4 dd44ded8 c03beb68 c03be258 bf0ae a88 00507d5c [ 40.490762] dee0: 00000800 00000081 dd44df0c dd44def8 c03bde00 c03beab8 bf0ae a88 00507d5c [ 40.490783] df00: dd44df24 dd44df10 c03bf1e8 c03bddb8 bf0aeb80 00507d5c dd44d f34 dd44df28 [ 40.490804] df20: c03c0258 c03bf1c4 dd44df44 dd44df38 bf0ad080 c03c0250 dd44d fa4 dd44df48 [ 40.490826] df40: c00c2348 bf0ad078 dd44df64 635f6974 00777370 00000000 dd180 d40 c000fb90 [ 40.490847] df60: 00000001 00000006 00507d28 00507d28 bea62ee5 00000081 dd44d f94 dd44df88 [ 40.490868] df80: c00896b0 000894bc 00000000 00507d28 00507d28 bea62ee5 00000 000 dd44dfa8 [ 40.490889] dfa0: c000fb40 c00c21f8 00507d28 00507d28 00507d5c 00000800 0a0d6 500 0a0d6500 [ 40.490910] dfc0: 00507d28 00507d28 bea62ee5 00000081 bea62ddc 00000000 bea62 be8 00000000 [ 40.490931] dfe0: b6eef521 bea62b7c 004ea613 b6eef526 80010030 00507d5c 0e30e 809 80b15400 [ 40.490942] Backtrace: [ 40.490970] [<c0029548>] (omap_device_idle) from [<c0029608>] (_od_runtime_su spend+0x24/0x28) [ 40.490982] r7:00000000 r6:c00295e4 r5:dd1d98a0 r4:dd1d9810 [ 40.491036] [<c00295e4>] (_od_runtime_suspend) from [<c03c7350>] (__rpm_callb ack+0x34/0x68) [ 40.491048] r5:dd1d98a0 r4:dd1d9810 [ 40.491078] [<c03c731c>] (__rpm_callback) from [<c03c73ac>] (rpm_callback+0x2 8/0x88) [ 40.491089] r7:00000000 r6:c08ca100 r5:c00295e4 r4:dd1d9810 [ 40.491130] [<c03c7384>] (rpm_callback) from [<c03c7fd8>] (rpm_suspend+0x104/ 0x4bc) [ 40.491141] r7:00000000 r6:c08ca100 r5:c00295e4 r4:dd1d9810 [ 40.491184] [<c03c7ed4>] (rpm_suspend) from [<c03c8568>] (rpm_idle+0x114/0x14 8) [ 40.491196] r10:00000000 r9:dd44c000 r8:dd1d994c r7:00000000 r6:00000004 r5: 00000000 [ 40.491236] r4:dd1d9810 [ 40.491259] [<c03c8454>] (rpm_idle) from [<c03c7844>] (__pm_runtime_idle+0x68 /0x8c) [ 40.491270] r9:dd44c000 r8:c112e770 r7:600f0013 r6:dd1d98a0 r5:00000004 r4:d d1d9810 [ 40.491334] [<c03c77dc>] (__pm_runtime_idle) from [<bf1d21a8>] (davinci_mdio_ remove+0x34/0x48 [davinci_mdio]) [ 40.491346] r7:de10c010 r6:c09201f0 r5:dd1d9810 r4:dd1d9810 [ 40.491399] [<bf1d2174>] (davinci_mdio_remove [davinci_mdio]) from [<c03c0170 >] (platform_drv_remove+0x28/0x48) [ 40.491411] r5:dd1d9810 r4:dd1d9810 [ 40.491441] [<c03c0148>] (platform_drv_remove) from [<c03be2f0>] (__device_re lease_driver+0xa4/0x118) [ 40.491453] r5:bf1d2bb0 r4:dd1d9810 [ 40.491481] [<c03be24c>] (__device_release_driver) from [<c03be38c>] (device_ release_driver+0x28/0x34) [ 40.491493] r5:dd1d9810 r4:dd1d9844 [ 40.491521] [<c03be364>] (device_release_driver) from [<c03bdb70>] (bus_remov e_device+0xec/0x11c) [ 40.491533] r5:dd1d9810 r4:de02a84c [ 40.491573] [<c03bda84>] (bus_remove_device) from [<c03baad4>] (device_del+0x 114/0x254) [ 40.491584] r7:de10c010 r6:dd1d9818 r5:00000000 r4:dd1d9810 [ 40.491626] [<c03ba9c0>] (device_del) from [<c03bac28>] (device_unregister+0x 14/0x28) [ 40.491638] r8:c000fce4 r7:00000081 r6:bf0a9744 r5:00000000 r4:dd1d9810 [ 40.491686] [<c03bac14>] (device_unregister) from [<c04cecbc>] (of_device_unr egister+0x14/0x18) [ 40.491698] r5:00000000 r4:00000000 [ 40.491750] [<c04ceca8>] (of_device_unregister) from [<bf0a9758>] (cpsw_remov e_child_device+0x14/0x1c [ti_cpsw]) [ 40.491782] [<bf0a9744>] (cpsw_remove_child_device [ti_cpsw]) from [<c03ba690 >] (device_for_each_child+0x3c/0x84) [ 40.491812] [<c03ba654>] (device_for_each_child) from [<bf0a97e0>] (cpsw_remo ve+0x80/0xb8 [ti_cpsw]) [ 40.491824] r6:de10c044 r5:de10c010 r4:dd25d000 [ 40.491869] [<bf0a9760>] (cpsw_remove [ti_cpsw]) from [<c03c0170>] (platform_ drv_remove+0x28/0x48) [ 40.491881] r5:de10c010 r4:de10c010 [ 40.491910] [<c03c0148>] (platform_drv_remove) from [<c03be2f0>] (__device_re lease_driver+0xa4/0x118) [ 40.491921] r5:bf0aea88 r4:de10c010 [ 40.491949] [<c03be24c>] (__device_release_driver) from [<c03beb68>] (driver_ detach+0xbc/0xc0) [ 40.491961] r5:bf0aea88 r4:de10c010 [ 40.491988] [<c03beaac>] (driver_detach) from [<c03bde00>] (bus_remove_driver +0x54/0xa8) [ 40.491999] r7:00000081 r6:00000800 r5:00507d5c r4:bf0aea88 [ 40.492039] [<c03bddac>] (bus_remove_driver) from [<c03bf1e8>] (driver_unregi ster+0x30/0x50) [ 40.492051] r5:00507d5c r4:bf0aea88 [ 40.492080] [<c03bf1b8>] (driver_unregister) from [<c03c0258>] (platform_driv er_unregister+0x14/0x18) [ 40.492091] r5:00507d5c r4:bf0aeb80 [ 40.492130] [<c03c0244>] (platform_driver_unregister) from [<bf0ad080>] (cpsw _driver_exit+0x14/0x1c [ti_cpsw]) [ 40.492166] [<bf0ad06c>] (cpsw_driver_exit [ti_cpsw]) from [<c00c2348>] (SyS_ delete_module+0x15c/0x1e4) [ 40.492193] [<c00c21ec>] (SyS_delete_module) from [<c000fb40>] (ret_fast_sysc all+0x0/0x1c) [ 40.492205] r6:bea62ee5 r5:00507d28 r4:00507d28 [ 40.492240] Code: e24cb004 e3500000 01a06000 1590625c (e5d6300d) [ 40.492407] ---[ end trace 7f5f8a598ccb1ba7 ]---
I have built the following as modules alongside ti_cpsw, cpsw_ale, cpsw_common, davinci_cpdma.
I'm using the TI kernel version 4.4.93 from the TI github.
Could you please advise a solution if known or if you require more information?
Thanks,
Ben
