Re: kernel panic with v5.18-rc1 on OpenPandora (only)

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Hi,

* H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> [220426 20:16]:
> Hi Tony,
> I ran across a new issue on the OpenPandora (omap3530) first appearing with v5.18-rc1.
> It seems as if there is something happening within the omap3 L3 irq handler which
> is used (only?) for the wl1251. And this triggers the timeout BUG_ON() in
> omap3_l3_app_irq().
> 
> I have not seen this issue on the GTA04.
> 
> It goes away if I remove the wlan interrupt from omap3-pandora-common.dtsi.
> Interestingly, removing the wl1251.ko does NOT stop it. So it is not the driver.
> 
> git bisect reported:
> 
> a1c510d0adc604bb143c86052bc5be48cbcfa17c is the first bad commit
> commit a1c510d0adc604bb143c86052bc5be48cbcfa17c
> Author: Ard Biesheuvel <ardb@xxxxxxxxxx>
> Date:   Thu Sep 23 09:15:53 2021 +0200
> 
>     ARM: implement support for vmap'ed stacks
>     
> Any ideas?

We had to add commit 8cf8df89678a ("ARM: OMAP2+: Fix regression for smc
calls for vmap stack") to fix vmap related issues in case you have not
seen that one yet. This seems different though, it's like the L3 interrupt
handler is not reading the right register?

Not sure why the L3 interrupt is triggering, that could be caused by
another issue with the wl1251 somewhere.

Ard and Arnd, any ideas?

Regards,

Tony

> ...
> [   27.357666] omap_hsmmc 480ad000.mmc: found wl1251
> [   27.465332] OF: graph: no port node found in /ocp@68000000/isp@480bc000/ports
> [   27.535552] wl1251: using dedicated interrupt line
> [   27.597839] usb0: HOST MAC 32:70:05:18:ff:78
> [   27.751281] ------------[ cut here ]------------
> [   27.756164] kernel BUG at drivers/bus/omap_l3_smx.c:177!
> [   27.761749] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
> [   27.767913] Modules linked in: omap3_isp(+) v4l2_fwnode v4l2_async wl1251_sdio(+) videobuf2_dma_contig videobuf2_memops wl1251 usb_f_ecm videobuf2_v4l2 videobuf2_common bq27xxx_battery_hdq omap_sham videodev mac80211 mc omap_aes_driver libarc4 crypto_engine omap_crypto g_ether usb_f_rndis u_ether omap_hdq libcomposite configfs panel_tpo_td043mtea1 omap2430(+) phy_twl4030_usb musb_hdrc twl4030_pwrbutton twl4030_charger twl4030_madc snd_soc_twl4030 industrialio twl4030_keypad ehci_omap bq27xxx_battery_i2c bq27xxx_battery pandora_nub omapdrm cfg80211 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm drm_panel_orientation_quirks cec ip_tables x_tables ipv6 autofs4
> [   27.831207] CPU: 0 PID: 1812 Comm: systemd-udevd Not tainted 5.16.0-rc1-letux+ #9435
> [   27.839355] Hardware name: Generic OMAP3 (Flattened Device Tree)
> [   27.845672] PC is at omap3_l3_app_irq+0x3c/0x120
> [   27.850555] LR is at __handle_irq_event_percpu+0xb0/0x1f8
> [   27.856262] pc : [<c053f5a4>]    lr : [<c017d36c>]    psr: 20070193
> [   27.862854] sp : e0001eb0  ip : 0dcf2f92  fp : c0d04014
> [   27.868377] r10: e0001f00  r9 : c1032200  r8 : 00000000
> [   27.873870] r7 : e0001f84  r6 : 0000001a  r5 : 00000000  r4 : f8000000
> [   27.880767] r3 : 00000000  r2 : 00080000  r1 : 00080000  r0 : 00080000
> [   27.887634] Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
> [   27.895263] Control: 10c5387d  Table: 829a8019  DAC: 00000051
> [   27.901306] Register r0 information: non-paged memory
> [   27.906646] Register r1 information: non-paged memory
> [   27.911987] Register r2 information: non-paged memory
> [   27.917297] Register r3 information: NULL pointer
> [   27.922271] Register r4 information: 0-page vmalloc region starting at 0xf8000000 allocated at iotable_init+0x0/0xf4
> [   27.933380] Register r5 information: NULL pointer
> [   27.938354] Register r6 information: non-paged memory
> [   27.943695] Register r7 information: 2-page vmalloc region starting at 0xe0000000 allocated at start_kernel+0x5c0/0x918
> [   27.955047] Register r8 information: NULL pointer
> [   27.959991] Register r9 information: slab kmalloc-256 start c1032200 pointer offset 0 size 256
> [   27.969085] Register r10 information: 2-page vmalloc region starting at 0xe0000000 allocated at start_kernel+0x5c0/0x918
> [   27.980529] Register r11 information: non-slab/vmalloc memory
> [   27.986572] Register r12 information: non-paged memory
> [   27.991973] Process systemd-udevd (pid: 1812, stack limit = 0x9cb9744d)
> [   27.998931] Stack: (0xe0001eb0 to 0xe0002000)
> [   28.003509] 1ea0:                                     0000001a c111a880 00000000 c111a800
> [   28.012115] 1ec0: c1032200 0000001a e0001f84 c017d36c c1032200 e0001f00 00000000 c0d03fc8
> [   28.020721] 1ee0: c1032200 c1032218 e0001f84 c0c79374 c29a15c0 c0deb720 e0001f50 c017d4d8
> [   28.029296] 1f00: 00000000 ea298583 c1032200 c103226c c1032218 c017d55c c1032200 c103226c
> [   28.037902] 1f20: c1032218 c0181c64 c0c7f684 e0001f50 00000000 c017ccbc c0c7f684 c0901018
> [   28.046508] 1f40: c0101314 60070113 ffffffff c0100b60 c29a15c0 c0c805c0 00000000 1ed14000
> [   28.055114] 1f60: c0c805c0 c0c805c0 00000040 c0d02d00 c0c79374 c29a15c0 c0deb720 c0d02080
> [   28.063690] 1f80: 0dcf2f92 e0001fa0 c01012e0 c0101314 60070113 ffffffff 00000051 c01012e0
> [   28.072265] 1fa0: c29a15c0 e01ddb8c e01dda50 00400140 0000000a ffff95a7 c1005c50 c0c805c0
> [   28.080871] 1fc0: c0d02d00 c0c805c0 c29a15c0 c29a15c0 60070013 ffffffff e01dda84 e01ddab0
> [   28.089447] 1fe0: c29a15c0 e01ddb8c e01dda50 c0136f10 c0905de0 c0137008 c0905de0 c0100b60
> [   28.098052] [<c053f5a4>] (omap3_l3_app_irq) from [<c017d36c>] (__handle_irq_event_percpu+0xb0/0x1f8)
> [   28.107666] [<c017d36c>] (__handle_irq_event_percpu) from [<c017d4d8>] (handle_irq_event_percpu+0x24/0x70)
> [   28.117797] [<c017d4d8>] (handle_irq_event_percpu) from [<c017d55c>] (handle_irq_event+0x38/0x5c)
> [   28.127136] [<c017d55c>] (handle_irq_event) from [<c0181c64>] (handle_level_irq+0x7c/0xb4)
> [   28.135864] [<c0181c64>] (handle_level_irq) from [<c017ccbc>] (handle_irq_desc+0x1c/0x2c)
> [   28.144470] [<c017ccbc>] (handle_irq_desc) from [<c0901018>] (generic_handle_arch_irq+0x2c/0x44)
> [   28.153717] [<c0901018>] (generic_handle_arch_irq) from [<c0100b60>] (__irq_svc+0x80/0xb8)
> [   28.162414] Exception stack(0xe0001fa0 to 0xe0001fe8)
> [   28.167755] 1fa0: c29a15c0 e01ddb8c e01dda50 00400140 0000000a ffff95a7 c1005c50 c0c805c0
> [   28.176330] 1fc0: c0d02d00 c0c805c0 c29a15c0 c29a15c0 60070013 ffffffff e01dda84 e01ddab0
> [   28.184906] 1fe0: c29a15c0 e01ddb8c
> [   28.188598] [<c0100b60>] (__irq_svc) from [<c0101314>] (__do_softirq+0x84/0x304)
> [   28.196380] [<c0101314>] (__do_softirq) from [<c0136f10>] (__irq_exit_rcu+0x8c/0xd4)
> [   28.204528] [<c0136f10>] (__irq_exit_rcu) from [<c0137008>] (irq_exit+0x8/0x10)
> [   28.212219] [<c0137008>] (irq_exit) from [<c0100b60>] (__irq_svc+0x80/0xb8)
> [   28.219543] Exception stack(0xe01ddaa0 to 0xe01ddae8)
> [   28.224884] daa0: 7fffffff c0902e94 00000004 00000000 c29a15c0 e01ddb90 e01ddb90 ea298583
> [   28.233459] dac0: 00000000 e01ddb8c e01ddb88 7fffffff 00000002 00000010 00000100 c202a000
> [   28.242065] dae0: 97ff8010 c0902f54
> [   28.245727] [<c0100b60>] (__irq_svc) from [<c0905de0>] (_raw_spin_unlock_irq+0x20/0x4c)
> [   28.254150] [<c0905de0>] (_raw_spin_unlock_irq) from [<c0902e94>] (do_wait_for_common+0xa8/0x138)
> [   28.263488] [<c0902e94>] (do_wait_for_common) from [<c0902f54>] (wait_for_common+0x30/0x48)
> [   28.272277] [<c0902f54>] (wait_for_common) from [<c074edf8>] (mmc_wait_for_req_done+0x1c/0x90)
> [   28.281341] [<c074edf8>] (mmc_wait_for_req_done) from [<c075a72c>] (mmc_io_rw_extended+0x1c0/0x2f4)
> [   28.290893] [<c075a72c>] (mmc_io_rw_extended) from [<c075bd00>] (sdio_io_rw_ext_helper+0x118/0x140)
> [   28.300415] [<c075bd00>] (sdio_io_rw_ext_helper) from [<c075bdd0>] (sdio_memcpy_toio+0x18/0x20)
> [   28.309570] [<c075bdd0>] (sdio_memcpy_toio) from [<bf3de1ec>] (wl1251_sdio_write+0x34/0x54 [wl1251_sdio])
> [   28.319702] [<bf3de1ec>] (wl1251_sdio_write [wl1251_sdio]) from [<bf40fc8c>] (wl1251_set_partition+0x90/0x404 [wl1251])
> [   28.331207] [<bf40fc8c>] (wl1251_set_partition [wl1251]) from [<bf4074ec>] (wl1251_init_ieee80211+0x1c0/0x3dc [wl1251])
> [   28.342712] [<bf4074ec>] (wl1251_init_ieee80211 [wl1251]) from [<bf3de474>] (wl1251_sdio_probe+0x1a0/0x250 [wl1251_sdio])
> [   28.354339] [<bf3de474>] (wl1251_sdio_probe [wl1251_sdio]) from [<c075aee8>] (sdio_bus_probe+0x128/0x138)
> [   28.364410] [<c075aee8>] (sdio_bus_probe) from [<c061c7d4>] (really_probe+0x170/0x2fc)
> [   28.372741] [<c061c7d4>] (really_probe) from [<c061ca24>] (__driver_probe_device+0xc4/0xd8)
> [   28.381530] [<c061ca24>] (__driver_probe_device) from [<c061ca68>] (driver_probe_device+0x30/0xac)
> [   28.390960] [<c061ca68>] (driver_probe_device) from [<c061ce98>] (__driver_attach+0xc4/0xd8)
> [   28.399841] [<c061ce98>] (__driver_attach) from [<c061acec>] (bus_for_each_dev+0x64/0xa0)
> [   28.408447] [<c061acec>] (bus_for_each_dev) from [<c061bc2c>] (bus_add_driver+0x148/0x1a4)
> [   28.417144] [<c061bc2c>] (bus_add_driver) from [<c061d700>] (driver_register+0xb4/0xf8)
> [   28.425567] [<c061d700>] (driver_register) from [<bf29d00c>] (wl1251_sdio_init+0xc/0x1000 [wl1251_sdio])
> [   28.435577] [<bf29d00c>] (wl1251_sdio_init [wl1251_sdio]) from [<c0101f94>] (do_one_initcall+0x90/0x1c8)
> [   28.445587] [<c0101f94>] (do_one_initcall) from [<c08f4e00>] (do_init_module+0x4c/0x204)
> [   28.454132] [<c08f4e00>] (do_init_module) from [<c01b5148>] (load_module+0x13f0/0x1928)
> [   28.462524] [<c01b5148>] (load_module) from [<c01b58b8>] (sys_finit_module+0xa0/0xc0)
> [   28.470794] [<c01b58b8>] (sys_finit_module) from [<c0100270>] (__sys_trace_return+0x0/0x10)
> [   28.479583] Code: e0000002 e0011003 e1901001 0a000002 (e7f001f2) 
> [   28.485992] ---[ end trace 6855b0c4a2214070 ]---
> [   28.490844] Kernel panic - not syncing: Fatal exception in interrupt
> [   28.497528] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
> 



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