Hi, On 03/12/2021 21:25, Sebastian Reichel wrote: > Hi, > > No idea (I have not booted my N900 for some time). Newer kernel might > just have slowed down or speed up things and uncovered a race condition. > IIRC the dma_mask warning is old and not a huge issue. > > What is IRQ #26 according to /proc/cpuinfo? > > Finally for the NULL pointer dereference in ssi_gdd_tasklet it would > help to run the stacktrace through "scripts/decode_stacktrace.sh", > so that we get exact line numbers. > > Have you tried bisecting this? Just a general response for now: I will get back to you on this, after I've figured out what is causing random boot and runtime faults as described in my other email "Oops while booting 5.15.2 on Nokia N900", as it makes debugging this (ssi/nokia-modem) or really any other problem quite tricky. Thanks & regards, Merlijn > -- Sebastian > > On Fri, Dec 03, 2021 at 04:35:48PM +0100, Merlijn Wajer wrote: >> Hi, >> >> Any idea what could be causing this regression? I've also enabled >> HSI_CHAR=m just in case that was the problem -- it wasn't, the same >> problem occurs unfortunately. >> >> Thanks in advance. >> >> Regards, >> Merlijn >> >> On 27/11/2021 02:09, Merlijn Wajer wrote: >>> Hi, >>> >>> As soon as nokia-modem on my Nokia N900 gets used, I get the following >>> warning, followed by an oops [1]. I believe the nokia-modem module is >>> probed with the "pm=1" argument, but that doesn't seem particularly >>> important given the trace, I think. >>> >>> Don't know exactly when this would have been introduced, but it worked >>> in 5.1 at least. Please let me know if I should provide more debug info, >>> or how I can help fix the problem. >>> >>> Thanks, >>> Cheers, >>> Merlijn >>> >>> [1] >>>> [ 165.461120] ssi-protocol ssi-protocol: WAKELINES TEST OK >>>> [ 165.467529] IPv6: ADDRCONF(NETDEV_CHANGE): phonet0: link becomes ready >>>> [ 165.498687] ------------[ cut here ]------------ >>>> [ 165.503417] WARNING: CPU: 0 PID: 662 at kernel/dma/mapping.c:188 __dma_map_sg_attrs+0xd8/0x100 >>>> [ 165.512237] Modules linked in: usb_f_ecm u_ether usb_f_mass_storage libcomposite bluetooth ecdh_generic ecc libaes zram zsmalloc cmt_speech nokia_modem ssi_protocol phonet joydev mousedev evdev wl1251_spi wl1251 mac80211 libarc4 omap3_rom_rng ir_rx51 rng_core rc_core snd_soc_rx51 leds_gpio sha256_generic libsha256 pvrsrvkm_omap3_sgx530_121 sha256_arm gpio_keys isp1704_charger pwm_omap_dmtimer display_connector cpufreq_dt omap3_isp videobuf2_dma_contig videobuf2_memops snd_soc_omap_mcbsp videobuf2_v4l2 snd_soc_ti_sdma videobuf2_common v4l2_fwnode v4l2_async cfg80211 videodev snd_soc_tpa6130a2 omap_sham crypto_engine mc snd_soc_core snd_pcm_dmaengine tsc2005 tsc200x_core panel_sony_acx565akm snd_pcm omap2430 snd_timer phy_twl4030_usb leds_lp5523 leds_lp55xx_common snd omap_mailbox bq2415x_charger led_class soundcore bq27xxx_battery_i2c bq27xxx_battery musb_hdrc udc_core rtc_twl ohci_platform ohci_hcd ehci_hcd twl4030_pwrbutton pwm_twl_led st_accel_i2c st_sensors_i2c st_accel >>>> [ 165.513031] twl4030_keypad pwm_twl twl4030_charger st_sensors twl4030_madc matrix_keymap industrialio_triggered_buffer kfifo_buf usbcore industrialio usb_common omapdrm omap_ssi hsi drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm drm_panel_orientation_quirks cec >>>> [ 165.627838] CPU: 0 PID: 662 Comm: irq/83-SSI PORT Not tainted 5.15.2-218696-g31e48a7f0946-dirty #1 >>>> [ 165.636871] Hardware name: Nokia RX-51 board >>>> [ 165.641204] [<c0111254>] (unwind_backtrace) from [<c010b8ac>] (show_stack+0x10/0x14) >>>> [ 165.649017] [<c010b8ac>] (show_stack) from [<c0a11d84>] (dump_stack_lvl+0x40/0x4c) >>>> [ 165.656677] [<c0a11d84>] (dump_stack_lvl) from [<c01362c8>] (__warn+0xd8/0x100) >>>> [ 165.664062] [<c01362c8>] (__warn) from [<c0a0d370>] (warn_slowpath_fmt+0x58/0xb8) >>>> [ 165.671600] [<c0a0d370>] (warn_slowpath_fmt) from [<c01b9bc0>] (__dma_map_sg_attrs+0xd8/0x100) >>>> [ 165.680297] [<c01b9bc0>] (__dma_map_sg_attrs) from [<c01b9bfc>] (dma_map_sg_attrs+0x14/0x20) >>>> [ 165.688781] [<c01b9bfc>] (dma_map_sg_attrs) from [<bf0a7738>] (ssi_start_transfer+0x208/0x358 [omap_ssi]) >>>> [ 165.698486] [<bf0a7738>] (ssi_start_transfer [omap_ssi]) from [<bf0a7918>] (ssi_async+0x90/0x1f4 [omap_ssi]) >>>> [ 165.708404] [<bf0a7918>] (ssi_async [omap_ssi]) from [<bf0a7d20>] (ssi_pio_complete+0x108/0x244 [omap_ssi]) >>>> [ 165.718261] [<bf0a7d20>] (ssi_pio_complete [omap_ssi]) from [<bf0a7ef8>] (ssi_pio_thread+0x9c/0x3ec [omap_ssi]) >>>> [ 165.728454] [<bf0a7ef8>] (ssi_pio_thread [omap_ssi]) from [<c019d094>] (irq_thread_fn+0x1c/0x78) >>>> [ 165.737335] [<c019d094>] (irq_thread_fn) from [<c019d380>] (irq_thread+0x108/0x210) >>>> [ 165.745056] [<c019d380>] (irq_thread) from [<c0159ba0>] (kthread+0x168/0x1a4) >>>> [ 165.752288] [<c0159ba0>] (kthread) from [<c0100150>] (ret_from_fork+0x14/0x24) >>>> [ 165.759552] Exception stack(0xc39adfb0 to 0xc39adff8) >>>> [ 165.764648] dfa0: 00000000 00000000 00000000 00000000 >>>> [ 165.772888] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >>>> [ 165.781127] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 >>>> [ 165.787841] ---[ end trace a3f2b689bab17aa5 ]--- >>>> [ 166.436523] irq 26: nobody cared (try booting with the "irqpoll" option) >>>> [ 166.443298] CPU: 0 PID: 662 Comm: irq/83-SSI PORT Tainted: G W 5.15.2-218696-g31e48a7f0946-dirty #1 >>>> [ 166.453704] Hardware name: Nokia RX-51 board >>>> [ 166.458007] [<c0111254>] (unwind_backtrace) from [<c010b8ac>] (show_stack+0x10/0x14) >>>> [ 166.465820] [<c010b8ac>] (show_stack) from [<c0a11d84>] (dump_stack_lvl+0x40/0x4c) >>>> [ 166.473449] [<c0a11d84>] (dump_stack_lvl) from [<c0a0ddf8>] (__report_bad_irq+0x30/0xc0) >>>> [ 166.481628] [<c0a0ddf8>] (__report_bad_irq) from [<c019fe5c>] (note_interrupt+0x150/0x2d8) >>>> [ 166.489959] [<c019fe5c>] (note_interrupt) from [<c019c518>] (handle_irq_event_percpu+0x6c/0x78) >>>> [ 166.498718] [<c019c518>] (handle_irq_event_percpu) from [<c019c55c>] (handle_irq_event+0x38/0x5c) >>>> [ 166.507659] [<c019c55c>] (handle_irq_event) from [<c01a0d60>] (handle_level_irq+0xc0/0x14c) >>>> [ 166.516082] [<c01a0d60>] (handle_level_irq) from [<c019bba8>] (handle_domain_irq+0x70/0xac) >>>> [ 166.524505] [<c019bba8>] (handle_domain_irq) from [<c0100b3c>] (__irq_svc+0x5c/0x90) >>>> [ 166.532318] Exception stack(0xc39ade70 to 0xc39adeb8) >>>> [ 166.537414] de60: c3f2b45c 00000202 00000201 00000002 >>>> [ 166.545623] de80: ccfb9480 00000000 c3f2b440 c3f2b45c 00000001 c305a140 c3d01c00 01000100 >>>> [ 166.553863] dea0: 00000021 c39adec0 bf0a794c c0a21008 60010013 ffffffff >>>> [ 166.560516] [<c0100b3c>] (__irq_svc) from [<c0a21008>] (_raw_spin_unlock_bh+0x0/0x34) >>>> [ 166.568420] [<c0a21008>] (_raw_spin_unlock_bh) from [<bf0a7888>] (ssi_async+0x0/0x1f4 [omap_ssi]) >>>> [ 166.577392] [<bf0a7888>] (ssi_async [omap_ssi]) from [<00000004>] (0x4) >>>> [ 166.584075] handlers: >>>> [ 166.586364] [<9a339024>] omap3_l3_app_irq >>>> [ 166.590454] Disabling IRQ #26 >>>> [ 166.593475] sched: RT throttling activated >>>> [ 166.593566] 8<--- cut here --- >>>> [ 166.600799] Unable to handle kernel NULL pointer dereference at virtual address 00000000 >>>> [ 166.608978] pgd = 34df813c >>>> [ 166.611724] [00000000] *pgd=00000000 >>>> [ 166.615356] Internal error: Oops: 805 [#1] PREEMPT SMP ARM >>>> [ 166.620880] Modules linked in: usb_f_ecm u_ether usb_f_mass_storage libcomposite bluetooth ecdh_generic ecc libaes zram zsmalloc cmt_speech nokia_modem ssi_protocol phonet joydev mousedev evdev wl1251_spi wl1251 mac80211 libarc4 omap3_rom_rng ir_rx51 rng_core rc_core snd_soc_rx51 leds_gpio sha256_generic libsha256 pvrsrvkm_omap3_sgx530_121 sha256_arm gpio_keys isp1704_charger pwm_omap_dmtimer display_connector cpufreq_dt omap3_isp videobuf2_dma_contig videobuf2_memops snd_soc_omap_mcbsp videobuf2_v4l2 snd_soc_ti_sdma videobuf2_common v4l2_fwnode v4l2_async cfg80211 videodev snd_soc_tpa6130a2 omap_sham crypto_engine mc snd_soc_core snd_pcm_dmaengine tsc2005 tsc200x_core panel_sony_acx565akm snd_pcm omap2430 snd_timer phy_twl4030_usb leds_lp5523 leds_lp55xx_common snd omap_mailbox bq2415x_charger led_class soundcore bq27xxx_battery_i2c bq27xxx_battery musb_hdrc udc_core rtc_twl ohci_platform ohci_hcd ehci_hcd twl4030_pwrbutton pwm_twl_led st_accel_i2c st_sensors_i2c st_accel >>>> [ 166.621673] twl4030_keypad pwm_twl twl4030_charger st_sensors twl4030_madc matrix_keymap industrialio_triggered_buffer kfifo_buf usbcore industrialio usb_common omapdrm omap_ssi hsi drm_kms_helper cfbfillrect syscopyarea cfbimgblt sysfillrect sysimgblt fb_sys_fops cfbcopyarea drm drm_panel_orientation_quirks cec >>>> [ 166.736297] CPU: 0 PID: 662 Comm: irq/83-SSI PORT Tainted: G W 5.15.2-218696-g31e48a7f0946-dirty #1 >>>> [ 166.746704] Hardware name: Nokia RX-51 board >>>> [ 166.751007] PC is at ssi_gdd_tasklet+0x258/0x2e8 [omap_ssi] >>>> [ 166.756652] LR is at _raw_spin_unlock+0x28/0x54 >>>> [ 166.761230] pc : [<bf0a6520>] lr : [<c0a20cd4>] psr: 20010013 >>>> [ 166.767517] sp : c39ade00 ip : ffb80000 fp : c3f2b45c >>>> [ 166.772796] r10: 00000001 r9 : c3d01c00 r8 : 00000001 >>>> [ 166.778045] r7 : 00000000 r6 : 00000000 r5 : c305a140 r4 : ccfb9480 >>>> [ 166.784606] r3 : 00000000 r2 : c3f2b4f4 r1 : 00000000 r0 : c3f2b4ec >>>> [ 166.791168] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none >>>> [ 166.798370] Control: 10c5387d Table: 85bb4019 DAC: 00000051 >>>> [ 166.804138] Register r0 information: slab kmalloc-512 start c3f2b400 pointer offset 236 size 512 >>>> [ 166.813049] Register r1 information: NULL pointer >>>> [ 166.817779] Register r2 information: slab kmalloc-512 start c3f2b400 pointer offset 244 size 512 >>>> [ 166.826660] Register r3 information: NULL pointer >>>> [ 166.831420] Register r4 information: slab kmalloc-64 start ccfb9480 pointer offset 0 size 64 >>>> [ 166.839935] Register r5 information: slab kmalloc-256 start c305a100 pointer offset 64 size 256 >>>> [ 166.848724] Register r6 information: NULL pointer >>>> [ 166.853485] Register r7 information: NULL pointer >>>> [ 166.858215] Register r8 information: non-paged memory >>>> [ 166.863311] Register r9 information: slab kmalloc-1k start c3d01c00 pointer offset 0 size 1024 >>>> [ 166.872009] Register r10 information: non-paged memory >>>> [ 166.877197] Register r11 information: slab kmalloc-512 start c3f2b400 pointer offset 92 size 512 >>>> [ 166.886077] Register r12 information: non-paged memory >>>> [ 166.891265] Process irq/83-SSI PORT (pid: 662, stack limit = 0xd6f455cc) >>>> [ 166.898010] Stack: (0xc39ade00 to 0xc39ae000) >>>> [ 166.902404] de00: 00000000 c1805e00 c1805e50 00000001 c3e49a00 c3f2b440 00000001 00000008 >>>> [ 166.910644] de20: fa058000 c305a140 00000000 c305a154 00000000 cfb5d330 00000000 00000000 >>>> [ 166.918853] de40: c0ff8760 00000101 c0f03080 c013d9e0 c0f03080 00000001 00000000 00000203 >>>> [ 166.927093] de60: ffffe000 c01012dc c3d01c00 c0100b3c 0000000a ffffcbe2 00208040 00000002 >>>> [ 166.935333] de80: ccfb9480 60010013 ffffe000 c3f2b440 c3f2b45c 00000001 c305a140 c3d01c00 >>>> [ 166.943572] dea0: 01000100 c013d468 00000200 c013d554 ccfb9480 00000000 c3f2b440 bf0a794c >>>> [ 166.951782] dec0: bf0a7888 c56d9100 c3f2b440 c3f2b45c c3f2b464 00000001 c305a140 c3d01c00 >>>> [ 166.960021] dee0: 01000100 bf0a7d20 00000004 c3d00410 c019d078 00000000 c3d01c00 c3f2b440 >>>> [ 166.968261] df00: c3f2b4a4 00000001 00000001 fa058000 c019d078 bf0a7ef8 00000004 b3675ddc >>>> [ 166.976501] df20: c019d078 c3f200c0 c1837b00 00000000 ffffe000 00000001 00000000 c3f200c0 >>>> [ 166.984710] df40: c019d078 c019d094 c1837b00 c3f200e4 00000000 c019d380 c371d840 00000000 >>>> [ 166.992950] df60: c019d19c b3675ddc 00000000 c39ac000 c3f7c580 c3f7c300 c019d278 c3f200c0 >>>> [ 167.001190] df80: c395bc04 c3f7c5a0 00000000 c0159ba0 c3f7c300 c0159a38 00000000 00000000 >>>> [ 167.009399] dfa0: 00000000 00000000 00000000 c0100150 00000000 00000000 00000000 00000000 >>>> [ 167.017639] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >>>> [ 167.025878] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 >>>> [ 167.034118] [<bf0a6520>] (ssi_gdd_tasklet [omap_ssi]) from [<c013d9e0>] (tasklet_action_common.constprop.4+0xa8/0xbc) >>>> [ 167.044830] [<c013d9e0>] (tasklet_action_common.constprop.4) from [<c01012dc>] (__do_softirq+0xf4/0x418) >>>> [ 167.054382] [<c01012dc>] (__do_softirq) from [<c013d468>] (do_softirq+0x70/0x7c) >>>> [ 167.061828] [<c013d468>] (do_softirq) from [<c013d554>] (__local_bh_enable_ip+0xe0/0xfc) >>>> [ 167.070007] [<c013d554>] (__local_bh_enable_ip) from [<bf0a794c>] (ssi_async+0xc4/0x1f4 [omap_ssi]) >>>> [ 167.079132] [<bf0a794c>] (ssi_async [omap_ssi]) from [<bf0a7d20>] (ssi_pio_complete+0x108/0x244 [omap_ssi]) >>>> [ 167.088989] [<bf0a7d20>] (ssi_pio_complete [omap_ssi]) from [<bf0a7ef8>] (ssi_pio_thread+0x9c/0x3ec [omap_ssi]) >>>> [ 167.099182] [<bf0a7ef8>] (ssi_pio_thread [omap_ssi]) from [<c019d094>] (irq_thread_fn+0x1c/0x78) >>>> [ 167.108062] [<c019d094>] (irq_thread_fn) from [<c019d380>] (irq_thread+0x108/0x210) >>>> [ 167.115783] [<c019d380>] (irq_thread) from [<c0159ba0>] (kthread+0x168/0x1a4) >>>> [ 167.122985] [<c0159ba0>] (kthread) from [<c0100150>] (ret_from_fork+0x14/0x24) >>>> [ 167.130279] Exception stack(0xc39adfb0 to 0xc39adff8) >>>> [ 167.135375] dfa0: 00000000 00000000 00000000 00000000 >>>> [ 167.143585] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 >>>> [ 167.151824] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 >>>> [ 167.158477] Code: e59210b0 e58240b0 e28220b4 e1c400f0 (e5814000) >>>> [ 167.164703] ---[ end trace a3f2b689bab17aa6 ]--- >>>> [ 167.169433] Kernel panic - not syncing: Fatal exception in interrupt >>>> [ 167.175842] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- >>
