So I’ve introduced a SPIDEV overlay that added in a couple of new cs-gpios whcih I’ve tested and do actually work
SPIDEV dtso
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2013 CircuitCo
* Virtual cape for SPI1 on connector pins P9.29 P9.31 P9.30 P9.28
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>
#include <dt-bindings/interrupt-controller/irq.h>
/*
* Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
*/
&{/chosen} {
overlays {
VERBATIM-SPIDEV-GEN2.bb.org-overlays = __TIMESTAMP__;
};
};
/*
* Free up the pins used by the cape from the pinmux helpers.
*/
&ocp {
P9_28_pinmux { status = "disabled"; }; /* P9_28 (C12) mcasp0_ahclkr.spi1_cs0 */
P9_30_pinmux { status = "disabled"; }; /* P9_30 (D12) mcasp0_axr0.spi1_d1 */
P9_29_pinmux { status = "disabled"; }; /* P9_29 (B13) mcasp0_fsx.spi1_d0 */
P9_31_pinmux { status = "disabled"; }; /* P9_31 (A13) mcasp0_aclkx.spi1_sclk */
// GPIO CS:
P8_15_pinmux { status = "disabled"; }; /* P8_15 adc2 */
P8_16_pinmux { status = "disabled"; }; /* P8_16 adc3 */
P8_18_pinmux { status = "disabled"; }; /* P8_18 mcp23 */
};
&am33xx_pinmux {
bb_spi1_pins: pinmux_bb_spi_pins {
pinctrl-single,pins = <
AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_INPUT, MUX_MODE3) /* P9_31 (A13) mcasp0_aclkx.spi1_sclk */
AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_INPUT, MUX_MODE3) /* P9_29 (B13) mcasp0_fsx.spi1_d0 */
AM33XX_PADCONF(AM335X_PIN_MCASP0_AXR0, PIN_INPUT, MUX_MODE3) /* P9_30 (D12) mcasp0_axr0.spi1_d1 */
AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT, MUX_MODE3) /* P9_28 (C12) mcasp0_ahclkr.spi1_cs0 adc1 */
AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_OUTPUT, MUX_MODE7) /* P8_15 (U13) gpmc_ad11.gpio1_15 adc2 */
AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_OUTPUT, MUX_MODE7) /* P8_16 (V13) gpmc_ad11.gpio1_14 adc3 */
AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_OUTPUT, MUX_MODE7) /* P8_20 (V12) gpmc_clk_mux0.gpio2_1 mcp23 */
>;
};
};
&spi1 {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bb_spi1_pins>;
cs-gpios = <0>, <&gpio1 15 GPIO_ACTIVE_LOW>, <&gpio1 14 GPIO_ACTIVE_LOW>, <0>;
/* ti,spi-num-cs = <4>; */
num-chipselects = <4>;
/*
* Select the D0 pin as output and D1 as
* input. The default is D0 as input and
* D1 as output.
*/
ti,pindir-d0-out-d1-in;
channel@0 {
#address-cells = <1>;
#size-cells = <0>;
compatible="spidev";
symlink = "bone/spi/adc1";
reg = <0>;
spi-max-frequency = <16000000>;
};
channel@1 {
#address-cells = <1>;
#size-cells = <0>;
compatible="spidev";
symlink = "bone/spi/adc2";
reg = <1>;
spi-max-frequency = <16000000>;
};
channel@2 {
#address-cells = <1>;
#size-cells = <0>;
compatible="spidev";
symlink = "bone/spi/adc3";
reg = <2>;
spi-max-frequency = <16000000>;
};
channel@3 {
#address-cells = <1>;
#size-cells = <0>;
compatible="spidev";
symlink = "bone/spi/mcp23";
reg = <3>;
spi-max-frequency = <16000000>;
};
};
But I was starting to get kernel crashes recently (1 in 5 times), with couple of backtraces. The first backtrace points to the dma_release_channel
Note the channel reference count condition:
chan reference count 3 != 1
But sometimes it would be:
chan reference count -1042247168 != 1
When I increased the FDT buffer size ( uboot_fdt_buffer ) from 0x60000 to 0x200000, then the crashes were less frequent (1 in 20), but didn’t have much trial runs with the increased fdt buffer, but I haven’t noticed any -1042247168 != 1 cases.
[ 13.107114] WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:907 dma_release_channel+0x100/0x108
[ 13.116065] chan reference count 3 != 1
[ 13.119942] Modules linked in:
[ 13.123030] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.168-ti-r83 #1bookworm
[ 13.130459] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 13.136579] Backtrace:
[ 13.139067] [<c0f8f014>] (dump_backtrace) from [<c0f8f3bc>] (show_stack+0x20/0x24)
[ 13.146676] r7:0000038b r6:00000013 r5:00000000 r4:c15daf68
[ 13.152373] [<c0f8f39c>] (show_stack) from [<c0f9a5cc>] (dump_stack+0x90/0xa4)
[ 13.159635] [<c0f9a53c>] (dump_stack) from [<c014130c>] (__warn+0x98/0x138)
[ 13.166630] r7:0000038b r6:00000009 r5:c096dde8 r4:c12baeb8
[ 13.172319] [<c0141274>] (__warn) from [<c0f8fcd0>] (warn_slowpath_fmt+0xa4/0xe4)
[ 13.179837] r7:00000009 r6:0000038b r5:c12baeb8 r4:c12bafd4
[ 13.185529] [<c0f8fc30>] (warn_slowpath_fmt) from [<c096dde8>] (dma_release_channel+0x100/0x108)
Serial printout
U-Boot SPL 2022.04-g5509547b (Jan 22 2026 - 19:56:08 +0000)
Trying to boot from MMC2
U-Boot 2022.04-g5509547b (Jan 22 2026 - 19:56:08 +0000)
CPU : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM: 512 MiB
Reset Source: Power-on reset has occurred.
RTC 32KCLK Source: External.
Core: 150 devices, 14 uclasses, devicetree: separate
WDT: Started wdt@44e35000 with servicing (60s timeout)
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from EXT4... Board: BeagleBone Black
<ethaddr> not set. Validating first E-fuse MAC
BeagleBone Black:
Model: BeagleBone Black Industrial Rev D:
BeagleBone Cape EEPROM: no EEPROM at address: 0x54
BeagleBone Cape EEPROM: no EEPROM at address: 0x55
BeagleBone Cape EEPROM: no EEPROM at address: 0x56
BeagleBone Cape EEPROM: no EEPROM at address: 0x57
Net: eth2: ethernet@4a100000, eth3: usb_ether
Press SPACE to abort autoboot in 0 seconds
board_name=[A335BNLT] ...
board_rev=[EID0] ...
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1...
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
Scanning disk mmc@48060000.blk...
Disk mmc@48060000.blk not ready
Scanning disk mmc@481d8000.blk...
Found 2 disks
No EFI system partition
BootOrder not defined
EFI boot manager: Cannot load any image
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt ...
Checking for: /boot/uEnv.txt ...
gpio: pin 55 (gpio 55) value is 1
1801 bytes read in 2 ms (878.9 KiB/s)
Loaded environment from /boot/uEnv.txt
Checking if uname_r is set in /boot/uEnv.txt...
gpio: pin 56 (gpio 56) value is 1
Running uname_boot ...
loading /boot/vmlinuz-5.10.168-ti-r83 ...
6640128 bytes read in 421 ms (15 MiB/s)
debug: [enable_uboot_overlays=1] ...
debug: [enable_uboot_cape_universal=1] ...
debug: [uboot_base_dtb_univ=am335x-boneblack-uboot-univ.dtb] ...
uboot_overlays: [uboot_base_dtb=am335x-boneblack-uboot-univ.dtb] ...
uboot_overlays: Switching too: dtb=am335x-boneblack-uboot-univ.dtb ...
loading /boot/dtbs/5.10.168-ti-r83/am335x-boneblack-uboot-univ.dtb ...
210706 bytes read in 17 ms (11.8 MiB/s)
Found 0 extension board(s).
uboot_overlays: [fdt_buffer=0x60000] ...
uboot_overlays: uboot loading of [BB-ADC-00A0.dtbo] disabled by /boot/uEnv.txt [disable_uboot_overlay_adc=1]...
uboot_overlays: loading /boot/dtbs/5.10.168-ti-r83/overlays/BB-I2C1-00A0.dtbo ...
1102 bytes read in 5 ms (214.8 KiB/s)
uboot_overlays: loading /boot/dtbs/5.10.168-ti-r83/overlays/VERBATIM-SPIDEV1-GEN2.dtbo ...
2142 bytes read in 5 ms (418 KiB/s)
uboot_overlays: loading /boot/dtbs/5.10.168-ti-r83/overlays/BB-BONE-eMMC1-01-00A0.dtbo ...
1605 bytes read in 5 ms (313.5 KiB/s)
uboot_overlays: uboot loading of [BB-HDMI-IT66122-00A0.dtbo] disabled by /boot/uEnv.txt [disable_uboot_overlay_video=1]...
loading /boot/initrd.img-5.10.168-ti-r83 ...
7822659 bytes read in 499 ms (14.9 MiB/s)
debug: [console=ttyS0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100] ...
debug: [bootz 0x82000000 0x88080000:775d43 88000000] ...
Kernel image @ 0x82000000 [ 0x000000 - 0x655200 ]
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Ramdisk to 8f88a000, end 8ffffd43 ... OK
Loading Device Tree to 8f7f3000, end 8f889fff ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 5.10.168-ti-r83 (voodoo@rpi4b4g-13) (gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1bookworm SMP PREEMPT Thu Aug 7 20:26:05 UTC 2025
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: TI AM335x BeagleBone Black
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 48 MiB at 0x9c800000
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x0000000080000000-0x000000009fdfffff]
[ 0.000000] HighMem empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000080000000-0x000000009fdfffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x000000009fdfffff]
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM335X ES2.1 (sgx neon)
[ 0.000000] percpu: Embedded 21 pages/cpu s54604 r8192 d23220 u86016
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129412
[ 0.000000] Kernel command line: console=ttyS0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:on, heap free:off
[ 0.000000] Memory: 437240K/522240K available (15360K kernel code, 1426K rwdata, 3924K rodata, 1024K init, 450K bss, 35848K reserved, 49152K cma-reserved, 0K highmem)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] ftrace: allocating 47536 entries in 140 pages
[ 0.000000] ftrace: allocated 140 pages with 3 groups
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU event tracing is enabled.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] Rude variant of Tasks RCU enabled.
[ 0.000000] Tracing variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] IRQ: Found an INTC at 0x(ptrval) (revision 5.0) with 128 interrupts
[ 0.000000] TI gptimer clocksource: always-on /ocp/interconnect@44c00000/segment@200000/target-module@31000
[ 0.000012] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000033] clocksource: dmtimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000460] TI gptimer clockevent: 24000000 Hz at /ocp/interconnect@48000000/segment@0/target-module@40000
[ 0.002890] Console: colour dummy device 80x30
[ 0.002988] Calibrating delay loop (skipped) preset value.. 995.32 BogoMIPS (lpj=1990656)
[ 0.003019] pid_max: default: 32768 minimum: 301
[ 0.003700] LSM: Security Framework initializing
[ 0.003831] Yama: becoming mindful.
[ 0.004147] AppArmor: AppArmor initialized
[ 0.004169] TOMOYO Linux initialized
[ 0.004382] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.004401] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[ 0.006347] CPU: Testing write buffer coherency: ok
[ 0.006443] CPU0: Spectre v2: using BPIALL workaround
[ 0.029180] Setting up static identity map for 0x80100000 - 0x80100060
[ 0.036547] rcu: Hierarchical SRCU implementation.
[ 0.045827] EFI services will not be available.
[ 0.056559] smp: Bringing up secondary CPUs ...
[ 0.056585] smp: Brought up 1 node, 1 CPU
[ 0.056599] SMP: Total of 1 processors activated (995.32 BogoMIPS).
[ 0.056612] CPU: All CPU(s) started in SVC mode.
[ 0.057690] devtmpfs: initialized
[ 0.104969] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 0.105549] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.105595] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
[ 0.109692] pinctrl core: initialized pinctrl subsystem
[ 0.111036] DMI not present or invalid.
[ 0.112064] NET: Registered protocol family 16
[ 0.116896] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[ 0.167981] l3-aon-clkctrl:0000:0: failed to disable
[ 0.168911] audit: initializing netlink subsys (disabled)
[ 0.170585] thermal_sys: Registered thermal governor 'fair_share'
[ 0.170601] thermal_sys: Registered thermal governor 'bang_bang'
[ 0.170619] thermal_sys: Registered thermal governor 'step_wise'
[ 0.170630] thermal_sys: Registered thermal governor 'user_space'
[ 0.170641] thermal_sys: Registered thermal governor 'power_allocator'
[ 0.171675] audit: type=2000 audit(0.160:1): state=initialized audit_enabled=0 res=1
[ 0.171730] cpuidle: using governor ladder
[ 0.171787] cpuidle: using governor menu
[ 7.185706] hw-breakpoint: debug architecture 0x4 unsupported.
[ 7.245026] Kprobes globally optimized
[ 7.272950] raid6: skip pq benchmark and using algorithm neonx8
[ 7.272985] raid6: using neon recovery algorithm
[ 7.280683] iommu: Default domain type: Translated
[ 7.285881] SCSI subsystem initialized
[ 7.289195] usbcore: registered new interface driver usbfs
[ 7.289271] usbcore: registered new interface driver hub
[ 7.289377] usbcore: registered new device driver usb
[ 7.291125] pps_core: LinuxPPS API ver. 1 registered
[ 7.291150] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 7.291180] PTP clock support registered
[ 7.294142] NetLabel: Initializing
[ 7.294170] NetLabel: domain hash size = 128
[ 7.294182] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 7.294296] NetLabel: unlabeled traffic allowed by default
[ 7.295650] clocksource: Switched to clocksource dmtimer
[ 8.376273] VFS: Disk quotas dquot_6.6.0
[ 8.376440] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 8.376804] FS-Cache: Loaded
[ 8.377253] CacheFiles: Loaded
[ 8.378536] AppArmor: AppArmor Filesystem Enabled
[ 8.393836] NET: Registered protocol family 2
[ 8.394175] IP idents hash table entries: 8192 (order: 4, 65536 bytes, linear)
[ 8.395950] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
[ 8.396278] TCP established hash table entries: 4096 (order: 2, 16384 bytes, linear)
[ 8.396350] TCP bind hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 8.396413] TCP: Hash tables configured (established 4096 bind 4096)
[ 8.397066] MPTCP token hash table entries: 512 (order: 1, 8192 bytes, linear)
[ 8.397189] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 8.397258] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
[ 8.397563] NET: Registered protocol family 1
[ 8.411206] RPC: Registered named UNIX socket transport module.
[ 8.411235] RPC: Registered udp transport module.
[ 8.411246] RPC: Registered tcp transport module.
[ 8.411256] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 8.411275] NET: Registered protocol family 44
[ 8.412436] Trying to unpack rootfs image as initramfs...
[ 9.393679] Freeing initrd memory: 7640K
[ 9.394976] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 counters available
[ 9.401763] Initialise system trusted keyrings
[ 9.402349] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[ 9.411936] zbud: loaded
[ 9.420540] NFS: Registering the id_resolver key type
[ 9.420619] Key type id_resolver registered
[ 9.420632] Key type id_legacy registered
[ 9.420845] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 9.420865] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 9.420924] jffs2: version 2.2. (NAND) (SUMMARY) � 2001-2006 Red Hat, Inc.
[ 9.422144] fuse: init (API version 7.32)
[ 9.515998] NET: Registered protocol family 38
[ 9.516051] xor: measuring software checksum speed
[ 9.523965] arm4regs : 1262 MB/sec
[ 9.534008] 8regs : 994 MB/sec
[ 9.544680] 32regs : 929 MB/sec
[ 9.550337] neon : 1762 MB/sec
[ 9.550350] xor: using function: neon (1762 MB/sec)
[ 9.550378] Key type asymmetric registered
[ 9.550391] Asymmetric key parser 'x509' registered
[ 9.550491] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 244)
[ 9.554936] io scheduler mq-deadline registered
[ 10.475153] ti-sysc: probe of 44e31000.target-module failed with error -16
[ 10.684116] ti-sysc: probe of 48040000.target-module failed with error -16
[ 10.957754] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
[ 11.117392] omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz
[ 11.722440] debugfs: Directory '49000000.dma' with parent 'dmaengine' already present!
[ 11.722495] edma 49000000.dma: TI EDMA DMA engine driver
[ 11.764692] pinctrl-single 44e10800.pinmux: 142 pins, size 568
[ 11.766449] gpio-of-helper ocp:cape-universal: Failed to get gpio property of 'P8_03'
[ 11.766475] gpio-of-helper ocp:cape-universal: Failed to create gpio entry
[ 11.793482] Serial: 8250/16550 driver, 6 ports, IRQ sharing disabled
[ 11.799160] printk: console [ttyS0] disabled
[ 11.799298] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 20, base_baud = 3000000) is a 8250
[ 12.680222] printk: console [ttyS0] enabled
[ 12.686780] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 26, base_baud = 3000000) is a 8250
[ 12.697814] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 27, base_baud = 3000000) is a 8250
[ 12.708831] 481a6000.serial: ttyS3 at MMIO 0x481a6000 (irq = 40, base_baud = 3000000) is a 8250
[ 12.719470] 481aa000.serial: ttyS5 at MMIO 0x481aa000 (irq = 41, base_baud = 3000000) is a 8250
[ 12.733797] omap_rng 48310000.rng: Random Number Generator ver. 20
[ 12.740432] random: crng init done
[ 12.859882] loop: module loaded
[ 12.863451] at24 2-0054: supply vcc not found, using dummy regulator
[ 12.899284] at24 2-0055: supply vcc not found, using dummy regulator
[ 12.935386] at24 2-0056: supply vcc not found, using dummy regulator
[ 12.971322] at24 2-0057: supply vcc not found, using dummy regulator
[ 13.102288] ------------[ cut here ]------------
[ 13.107114] WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:907 dma_release_channel+0x100/0x108
[ 13.116065] chan reference count 3 != 1
[ 13.119942] Modules linked in:
[ 13.123030] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.168-ti-r83 #1bookworm
[ 13.130459] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 13.136579] Backtrace:
[ 13.139067] [<c0f8f014>] (dump_backtrace) from [<c0f8f3bc>] (show_stack+0x20/0x24)
[ 13.146676] r7:0000038b r6:00000013 r5:00000000 r4:c15daf68
[ 13.152373] [<c0f8f39c>] (show_stack) from [<c0f9a5cc>] (dump_stack+0x90/0xa4)
[ 13.159635] [<c0f9a53c>] (dump_stack) from [<c014130c>] (__warn+0x98/0x138)
[ 13.166630] r7:0000038b r6:00000009 r5:c096dde8 r4:c12baeb8
[ 13.172319] [<c0141274>] (__warn) from [<c0f8fcd0>] (warn_slowpath_fmt+0xa4/0xe4)
[ 13.179837] r7:00000009 r6:0000038b r5:c12baeb8 r4:c12bafd4
[ 13.185529] [<c0f8fc30>] (warn_slowpath_fmt) from [<c096dde8>] (dma_release_channel+0x100/0x108)
[ 13.194355] r8:00000000 r7:c3ccb1da r6:c3c9b140 r5:000000cc r4:c1949dc0
[ 13.201105] [<c096dce8>] (dma_release_channel) from [<c0b45678>] (omap2_mcspi_release_dma+0x64/0x94)
[ 13.210277] r4:00000004
[ 13.212828] [<c0b45614>] (omap2_mcspi_release_dma) from [<c0b460f4>] (omap2_mcspi_probe+0x354/0x574)
[ 13.222006] r10:c1234348 r9:c1e8bc10 r8:c3ccb000 r7:00000000 r6:fffffdfb r5:c3ccb380
[ 13.229871] r4:c1e8bd40
[ 13.232423] [<c0b45da0>] (omap2_mcspi_probe) from [<c0a862c0>] (platform_drv_probe+0x58/0xac)
[ 13.240991] r10:00000000 r9:c15f4284 r8:c16c4ce4 r7:00000000 r6:c15f4284 r5:c1e8bc10
[ 13.248855] r4:00000000
[ 13.251412] [<c0a86268>] (platform_drv_probe) from [<c0a8360c>] (really_probe+0x108/0x4f8)
[ 13.259715] r7:00000000 r6:00000000 r5:c16c4cdc r4:c1e8bc10
[ 13.265407] [<c0a83504>] (really_probe) from [<c0a83eb8>] (driver_probe_device+0x100/0x1d4)
[ 13.273800] r10:00000000 r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:c15f4284
[ 13.281663] r4:c1e8bc10
[ 13.284214] [<c0a83db8>] (driver_probe_device) from [<c0a842cc>] (device_driver_attach+0xb8/0xc0)
[ 13.293130] r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:00000000 r4:c1e8bc10
[ 13.300914] [<c0a84214>] (device_driver_attach) from [<c0a84388>] (__driver_attach+0xb4/0x148)
[ 13.309566] r7:c15e9178 r6:c0a842d4 r5:c1e8bc10 r4:c15f4284
[ 13.315255] [<c0a842d4>] (__driver_attach) from [<c0a80e74>] (bus_for_each_dev+0x84/0xd0)
[ 13.323471] r7:c15e9178 r6:c0a842d4 r5:c15f4284 r4:00000000
[ 13.329160] [<c0a80df0>] (bus_for_each_dev) from [<c0a82cf0>] (driver_attach+0x2c/0x30)
[ 13.337200] r6:00000000 r5:c3d2b180 r4:c15f4284
[ 13.341844] [<c0a82cc4>] (driver_attach) from [<c0a82704>] (bus_add_driver+0x124/0x218)
[ 13.349891] [<c0a825e0>] (bus_add_driver) from [<c0a85004>] (driver_register+0x98/0x128)
[ 13.358020] r8:c1469834 r7:00000000 r6:00000006 r5:00000000 r4:c15f4284
[ 13.364757] [<c0a84f6c>] (driver_register) from [<c0a86214>] (__platform_driver_register+0x50/0x58)
[ 13.373843] r5:c19299c0 r4:c15e9178
[ 13.377450] [<c0a861c4>] (__platform_driver_register) from [<c143d11c>] (omap2_mcspi_driver_init+0x24/0x28)
[ 13.387235] r5:c19299c0 r4:c143d0f8
[ 13.390836] [<c143d0f8>] (omap2_mcspi_driver_init) from [<c01024cc>] (do_one_initcall+0x50/0x2f4)
[ 13.399757] [<c010247c>] (do_one_initcall) from [<c1401578>] (kernel_init_freeable+0x254/0x2b0)
[ 13.408496] r7:c1665000 r6:00000006 r5:c19299c0 r4:c14b966c
[ 13.414191] [<c1401324>] (kernel_init_freeable) from [<c0fa3068>] (kernel_init+0x18/0x130)
[ 13.422497] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0fa3050
[ 13.430361] r4:00000000
[ 13.432909] [<c0fa3050>] (kernel_init) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[ 13.440513] Exception stack(0xc1969fb0 to 0xc1969ff8)
[ 13.445590] 9fa0: 00000000 00000000 00000000 00000000
[ 13.453809] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 13.462025] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 13.468669] r5:c0fa3050 r4:00000000
[ 13.472430] ---[ end trace 4ae74a3734ec527b ]---
[ 13.477150] ------------[ cut here ]------------
[ 13.481840] WARNING: CPU: 0 PID: 1 at lib/refcount.c:28 refcount_warn_saturate+0x13c/0x174
[ 13.490164] refcount_t: underflow; use-after-free.
[ 13.494996] Modules linked in:
[ 13.498100] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.10.168-ti-r83 #1bookworm
[ 13.506923] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 13.513042] Backtrace:
[ 13.515516] [<c0f8f014>] (dump_backtrace) from [<c0f8f3bc>] (show_stack+0x20/0x24)
[ 13.523122] r7:0000001c r6:00000013 r5:00000000 r4:c15daf68
[ 13.528815] [<c0f8f39c>] (show_stack) from [<c0f9a5cc>] (dump_stack+0x90/0xa4)
[ 13.536074] [<c0f9a53c>] (dump_stack) from [<c014130c>] (__warn+0x98/0x138)
[ 13.543069] r7:0000001c r6:00000009 r5:c0887c94 r4:c12a9b40
[ 13.548756] [<c0141274>] (__warn) from [<c0f8fcd0>] (warn_slowpath_fmt+0xa4/0xe4)
[ 13.556274] r7:00000009 r6:0000001c r5:c12a9b40 r4:c12a9b7c
[ 13.561964] [<c0f8fc30>] (warn_slowpath_fmt) from [<c0887c94>] (refcount_warn_saturate+0x13c/0x174)
[ 13.571054] r8:00000000 r7:c3ccb1da r6:c3c9b140 r5:c1949dc0 r4:c192b310
[ 13.577793] [<c0887b58>] (refcount_warn_saturate) from [<c096dce4>] (dma_chan_put+0x120/0x124)
[ 13.586448] [<c096dbc4>] (dma_chan_put) from [<c096dd20>] (dma_release_channel+0x38/0x108)
[ 13.594750] r5:000000cc r4:c1949dc0
[ 13.598350] [<c096dce8>] (dma_release_channel) from [<c0b45678>] (omap2_mcspi_release_dma+0x64/0x94)
[ 13.607524] r4:00000004
[ 13.610074] [<c0b45614>] (omap2_mcspi_release_dma) from [<c0b460f4>] (omap2_mcspi_probe+0x354/0x574)
[ 13.619251] r10:c1234348 r9:c1e8bc10 r8:c3ccb000 r7:00000000 r6:fffffdfb r5:c3ccb380
[ 13.627115] r4:c1e8bd40
[ 13.629665] [<c0b45da0>] (omap2_mcspi_probe) from [<c0a862c0>] (platform_drv_probe+0x58/0xac)
[ 13.638232] r10:00000000 r9:c15f4284 r8:c16c4ce4 r7:00000000 r6:c15f4284 r5:c1e8bc10
[ 13.646095] r4:00000000
[ 13.648647] [<c0a86268>] (platform_drv_probe) from [<c0a8360c>] (really_probe+0x108/0x4f8)
[ 13.656951] r7:00000000 r6:00000000 r5:c16c4cdc r4:c1e8bc10
[ 13.662641] [<c0a83504>] (really_probe) from [<c0a83eb8>] (driver_probe_device+0x100/0x1d4)
[ 13.671034] r10:00000000 r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:c15f4284
[ 13.678898] r4:c1e8bc10
[ 13.681448] [<c0a83db8>] (driver_probe_device) from [<c0a842cc>] (device_driver_attach+0xb8/0xc0)
[ 13.690364] r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:00000000 r4:c1e8bc10
[ 13.698148] [<c0a84214>] (device_driver_attach) from [<c0a84388>] (__driver_attach+0xb4/0x148)
[ 13.706801] r7:c15e9178 r6:c0a842d4 r5:c1e8bc10 r4:c15f4284
[ 13.712490] [<c0a842d4>] (__driver_attach) from [<c0a80e74>] (bus_for_each_dev+0x84/0xd0)
[ 13.720705] r7:c15e9178 r6:c0a842d4 r5:c15f4284 r4:00000000
[ 13.726394] [<c0a80df0>] (bus_for_each_dev) from [<c0a82cf0>] (driver_attach+0x2c/0x30)
[ 13.734434] r6:00000000 r5:c3d2b180 r4:c15f4284
[ 13.739077] [<c0a82cc4>] (driver_attach) from [<c0a82704>] (bus_add_driver+0x124/0x218)
[ 13.747123] [<c0a825e0>] (bus_add_driver) from [<c0a85004>] (driver_register+0x98/0x128)
[ 13.755252] r8:c1469834 r7:00000000 r6:00000006 r5:00000000 r4:c15f4284
[ 13.761987] [<c0a84f6c>] (driver_register) from [<c0a86214>] (__platform_driver_register+0x50/0x58)
[ 13.771073] r5:c19299c0 r4:c15e9178
[ 13.774671] [<c0a861c4>] (__platform_driver_register) from [<c143d11c>] (omap2_mcspi_driver_init+0x24/0x28)
[ 13.784456] r5:c19299c0 r4:c143d0f8
[ 13.788053] [<c143d0f8>] (omap2_mcspi_driver_init) from [<c01024cc>] (do_one_initcall+0x50/0x2f4)
[ 13.796970] [<c010247c>] (do_one_initcall) from [<c1401578>] (kernel_init_freeable+0x254/0x2b0)
[ 13.805711] r7:c1665000 r6:00000006 r5:c19299c0 r4:c14b966c
[ 13.811400] [<c1401324>] (kernel_init_freeable) from [<c0fa3068>] (kernel_init+0x18/0x130)
[ 13.819705] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0fa3050
[ 13.827569] r4:00000000
[ 13.830117] [<c0fa3050>] (kernel_init) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[ 13.837720] Exception stack(0xc1969fb0 to 0xc1969ff8)
[ 13.842797] 9fa0: 00000000 00000000 00000000 00000000
[ 13.851014] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 13.859231] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 13.865875] r5:c0fa3050 r4:00000000
[ 13.869599] ---[ end trace 4ae74a3734ec527c ]---
[ 13.874272] ------------[ cut here ]------------
[ 13.878953] WARNING: CPU: 0 PID: 1 at kernel/module.c:1162 module_put.part.0+0x16c/0x178
[ 13.887103] Modules linked in:
[ 13.890202] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.10.168-ti-r83 #1bookworm
[ 13.899025] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 13.905143] Backtrace:
[ 13.907615] [<c0f8f014>] (dump_backtrace) from [<c0f8f3bc>] (show_stack+0x20/0x24)
[ 13.915220] r7:0000048a r6:00000013 r5:00000000 r4:c15daf68
[ 13.920910] [<c0f8f39c>] (show_stack) from [<c0f9a5cc>] (dump_stack+0x90/0xa4)
[ 13.928170] [<c0f9a53c>] (dump_stack) from [<c014130c>] (__warn+0x98/0x138)
[ 13.935163] r7:0000048a r6:00000009 r5:c0206218 r4:c1240300
[ 13.940849] [<c0141274>] (__warn) from [<c0f8fc9c>] (warn_slowpath_fmt+0x70/0xe4)
[ 13.948368] r7:00000009 r6:0000048a r5:c1240300 r4:00000000
[ 13.954058] [<c0f8fc30>] (warn_slowpath_fmt) from [<c0206218>] (module_put.part.0+0x16c/0x178)
[ 13.962711] r8:00000000 r7:c3ccb1da r6:c0206244 r5:c19402c8 r4:c192b310
[ 13.969446] [<c02060ac>] (module_put.part.0) from [<c0206244>] (module_put+0x20/0x24)
[ 13.977312] r7:c3ccb1da r6:c3c9b140 r5:c1949dc0 r4:c192b310
[ 13.983002] [<c0206224>] (module_put) from [<c096dc94>] (dma_chan_put+0xd0/0x124)
[ 13.990523] [<c096dbc4>] (dma_chan_put) from [<c096dd20>] (dma_release_channel+0x38/0x108)
[ 13.998824] r5:000000cc r4:c1949dc0
[ 14.002423] [<c096dce8>] (dma_release_channel) from [<c0b45678>] (omap2_mcspi_release_dma+0x64/0x94)
[ 14.011596] r4:00000004
[ 14.014144] [<c0b45614>] (omap2_mcspi_release_dma) from [<c0b460f4>] (omap2_mcspi_probe+0x354/0x574)
[ 14.023321] r10:c1234348 r9:c1e8bc10 r8:c3ccb000 r7:00000000 r6:fffffdfb r5:c3ccb380
[ 14.031186] r4:c1e8bd40
[ 14.033734] [<c0b45da0>] (omap2_mcspi_probe) from [<c0a862c0>] (platform_drv_probe+0x58/0xac)
[ 14.042300] r10:00000000 r9:c15f4284 r8:c16c4ce4 r7:00000000 r6:c15f4284 r5:c1e8bc10
[ 14.050163] r4:00000000
[ 14.052712] [<c0a86268>] (platform_drv_probe) from [<c0a8360c>] (really_probe+0x108/0x4f8)
[ 14.061015] r7:00000000 r6:00000000 r5:c16c4cdc r4:c1e8bc10
[ 14.066704] [<c0a83504>] (really_probe) from [<c0a83eb8>] (driver_probe_device+0x100/0x1d4)
[ 14.075096] r10:00000000 r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:c15f4284
[ 14.082959] r4:c1e8bc10
[ 14.085510] [<c0a83db8>] (driver_probe_device) from [<c0a842cc>] (device_driver_attach+0xb8/0xc0)
[ 14.094425] r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:00000000 r4:c1e8bc10
[ 14.102207] [<c0a84214>] (device_driver_attach) from [<c0a84388>] (__driver_attach+0xb4/0x148)
[ 14.110858] r7:c15e9178 r6:c0a842d4 r5:c1e8bc10 r4:c15f4284
[ 14.116547] [<c0a842d4>] (__driver_attach) from [<c0a80e74>] (bus_for_each_dev+0x84/0xd0)
[ 14.124762] r7:c15e9178 r6:c0a842d4 r5:c15f4284 r4:00000000
[ 14.130450] [<c0a80df0>] (bus_for_each_dev) from [<c0a82cf0>] (driver_attach+0x2c/0x30)
[ 14.138490] r6:00000000 r5:c3d2b180 r4:c15f4284
[ 14.143131] [<c0a82cc4>] (driver_attach) from [<c0a82704>] (bus_add_driver+0x124/0x218)
[ 14.151174] [<c0a825e0>] (bus_add_driver) from [<c0a85004>] (driver_register+0x98/0x128)
[ 14.159304] r8:c1469834 r7:00000000 r6:00000006 r5:00000000 r4:c15f4284
[ 14.166038] [<c0a84f6c>] (driver_register) from [<c0a86214>] (__platform_driver_register+0x50/0x58)
[ 14.175124] r5:c19299c0 r4:c15e9178
[ 14.178723] [<c0a861c4>] (__platform_driver_register) from [<c143d11c>] (omap2_mcspi_driver_init+0x24/0x28)
[ 14.188506] r5:c19299c0 r4:c143d0f8
[ 14.192103] [<c143d0f8>] (omap2_mcspi_driver_init) from [<c01024cc>] (do_one_initcall+0x50/0x2f4)
[ 14.201018] [<c010247c>] (do_one_initcall) from [<c1401578>] (kernel_init_freeable+0x254/0x2b0)
[ 14.209757] r7:c1665000 r6:00000006 r5:c19299c0 r4:c14b966c
[ 14.215447] [<c1401324>] (kernel_init_freeable) from [<c0fa3068>] (kernel_init+0x18/0x130)
[ 14.223751] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0fa3050
[ 14.231615] r4:00000000
[ 14.234163] [<c0fa3050>] (kernel_init) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[ 14.241766] Exception stack(0xc1969fb0 to 0xc1969ff8)
[ 14.246841] 9fa0: 00000000 00000000 00000000 00000000
[ 14.255058] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 14.263273] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 14.269917] r5:c0fa3050 r4:00000000
[ 14.273589] ---[ end trace 4ae74a3734ec527d ]---
[ 14.278385] ------------[ cut here ]------------
[ 14.283073] WARNING: CPU: 0 PID: 1 at fs/kernfs/dir.c:1514 kernfs_remove_by_name_ns+0xcc/0xd0
[ 14.291662] kernfs: can not remove 'slave', no directory
[ 14.297018] Modules linked in:
[ 14.300119] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.10.168-ti-r83 #1bookworm
[ 14.308943] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 14.315062] Backtrace:
[ 14.317537] [<c0f8f014>] (dump_backtrace) from [<c0f8f3bc>] (show_stack+0x20/0x24)
[ 14.325144] r7:000005ea r6:00000013 r5:00000000 r4:c15daf68
[ 14.330834] [<c0f8f39c>] (show_stack) from [<c0f9a5cc>] (dump_stack+0x90/0xa4)
[ 14.338095] [<c0f9a53c>] (dump_stack) from [<c014130c>] (__warn+0x98/0x138)
[ 14.345090] r7:000005ea r6:00000009 r5:c0436dac r4:c125d198
[ 14.350778] [<c0141274>] (__warn) from [<c0f8fcd0>] (warn_slowpath_fmt+0xa4/0xe4)
[ 14.358296] r7:00000009 r6:000005ea r5:c125d198 r4:c125d258
[ 14.363985] [<c0f8fc30>] (warn_slowpath_fmt) from [<c0436dac>] (kernfs_remove_by_name_ns+0xcc/0xd0)
[ 14.373075] r8:00000000 r7:c3ccb1da r6:00000000 r5:c12f20b4 r4:00000000
[ 14.379814] [<c0436ce0>] (kernfs_remove_by_name_ns) from [<c0439a10>] (sysfs_remove_link+0x30/0x34)
[ 14.388901] r6:c3c9b140 r5:000000cc r4:c1949dc0
[ 14.393547] [<c04399e0>] (sysfs_remove_link) from [<c096dd58>] (dma_release_channel+0x70/0x108)
[ 14.402292] [<c096dce8>] (dma_release_channel) from [<c0b45678>] (omap2_mcspi_release_dma+0x64/0x94)
[ 14.411466] r4:00000004
[ 14.414016] [<c0b45614>] (omap2_mcspi_release_dma) from [<c0b460f4>] (omap2_mcspi_probe+0x354/0x574)
[ 14.423193] r10:c1234348 r9:c1e8bc10 r8:c3ccb000 r7:00000000 r6:fffffdfb r5:c3ccb380
[ 14.431057] r4:c1e8bd40
[ 14.433607] [<c0b45da0>] (omap2_mcspi_probe) from [<c0a862c0>] (platform_drv_probe+0x58/0xac)
[ 14.442173] r10:00000000 r9:c15f4284 r8:c16c4ce4 r7:00000000 r6:c15f4284 r5:c1e8bc10
[ 14.450037] r4:00000000
[ 14.452590] [<c0a86268>] (platform_drv_probe) from [<c0a8360c>] (really_probe+0x108/0x4f8)
[ 14.460892] r7:00000000 r6:00000000 r5:c16c4cdc r4:c1e8bc10
[ 14.466582] [<c0a83504>] (really_probe) from [<c0a83eb8>] (driver_probe_device+0x100/0x1d4)
[ 14.474974] r10:00000000 r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:c15f4284
[ 14.482838] r4:c1e8bc10
[ 14.485388] [<c0a83db8>] (driver_probe_device) from [<c0a842cc>] (device_driver_attach+0xb8/0xc0)
[ 14.494303] r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:00000000 r4:c1e8bc10
[ 14.502086] [<c0a84214>] (device_driver_attach) from [<c0a84388>] (__driver_attach+0xb4/0x148)
[ 14.510738] r7:c15e9178 r6:c0a842d4 r5:c1e8bc10 r4:c15f4284
[ 14.516426] [<c0a842d4>] (__driver_attach) from [<c0a80e74>] (bus_for_each_dev+0x84/0xd0)
[ 14.524642] r7:c15e9178 r6:c0a842d4 r5:c15f4284 r4:00000000
[ 14.530331] [<c0a80df0>] (bus_for_each_dev) from [<c0a82cf0>] (driver_attach+0x2c/0x30)
[ 14.538371] r6:00000000 r5:c3d2b180 r4:c15f4284
[ 14.543014] [<c0a82cc4>] (driver_attach) from [<c0a82704>] (bus_add_driver+0x124/0x218)
[ 14.551058] [<c0a825e0>] (bus_add_driver) from [<c0a85004>] (driver_register+0x98/0x128)
[ 14.559186] r8:c1469834 r7:00000000 r6:00000006 r5:00000000 r4:c15f4284
[ 14.565922] [<c0a84f6c>] (driver_register) from [<c0a86214>] (__platform_driver_register+0x50/0x58)
[ 14.575009] r5:c19299c0 r4:c15e9178
[ 14.578607] [<c0a861c4>] (__platform_driver_register) from [<c143d11c>] (omap2_mcspi_driver_init+0x24/0x28)
[ 14.588391] r5:c19299c0 r4:c143d0f8
[ 14.591988] [<c143d0f8>] (omap2_mcspi_driver_init) from [<c01024cc>] (do_one_initcall+0x50/0x2f4)
[ 14.600908] [<c010247c>] (do_one_initcall) from [<c1401578>] (kernel_init_freeable+0x254/0x2b0)
[ 14.609648] r7:c1665000 r6:00000006 r5:c19299c0 r4:c14b966c
[ 14.615337] [<c1401324>] (kernel_init_freeable) from [<c0fa3068>] (kernel_init+0x18/0x130)
[ 14.623643] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0fa3050
[ 14.631507] r4:00000000
[ 14.634056] [<c0fa3050>] (kernel_init) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[ 14.641660] Exception stack(0xc1969fb0 to 0xc1969ff8)
[ 14.646735] 9fa0: 00000000 00000000 00000000 00000000
[ 14.654953] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 14.663168] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 14.669813] r5:c0fa3050 r4:00000000
[ 14.673457] ---[ end trace 4ae74a3734ec527e ]---
[ 14.678144] 8<--- cut here ---
[ 14.681241] Unable to handle kernel NULL pointer dereference at virtual address 00000051
[ 14.689397] pgd = 98ef8edf
[ 14.692137] [00000051] *pgd=00000000
[ 14.695768] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[ 14.701107] Modules linked in:
[ 14.704185] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 5.10.168-ti-r83 #1bookworm
[ 14.713008] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 14.719134] PC is at kernfs_find_ns+0x18/0x108
[ 14.723599] LR is at kernfs_remove_by_name_ns+0x44/0xd0
[ 14.728848] pc : [<c04350a0>] lr : [<c0436d24>] psr: 60000013
[ 14.735142] sp : c1969c40 ip : c1969c70 fp : c1969c6c
[ 14.740390] r10: 00000044 r9 : c3ccb380 r8 : 00000000
[ 14.745638] r7 : c3ccb1da r6 : 00000000 r5 : 00000000 r4 : 00000001
[ 14.752194] r3 : c1964800 r2 : 00000000 r1 : 00000000 r0 : 00000001
[ 14.758754] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 14.765921] Control: 10c5387d Table: 80004019 DAC: 00000051
[ 14.771693] Process swapper/0 (pid: 1, stack limit = 0x0f560ef1)
[ 14.777726] Stack: (0xc1969c40 to 0xc196a000)
[ 14.782107] 9c40: c1969c70 9071c570 00000000 c12f20b4 00000001 00000000 00000000 c3ccb1da
[ 14.790325] 9c60: c1969c94 c1969c70 c0436d24 c0435094 c12f20b4 c1969c80 c0206244 c1949dc0
[ 14.798543] 9c80: 000000cc c3c9b140 c1969ca4 c1969c98 c0439a10 c0436cec c1969cc4 c1969ca8
[ 14.806761] 9ca0: c096dd64 c04399ec 00000003 c1234348 c1969cdc 00000004 c1969cfc c1969cc8
[ 14.814978] 9cc0: c0b45678 c096dcf4 c0faadd4 c3c9b20c c1969cfc c1e8bd40 c3ccb380 fffffdfb
[ 14.823196] 9ce0: 00000000 c3ccb000 c1e8bc10 c1234348 c1969d5c c1969d00 c0b460f4 c0b45620
[ 14.831414] 9d00: 00000000 c1e744c0 c3ccb380 00000000 c1e8bc00 c1e8bc10 c16c60f8 c12f20ec
[ 14.839632] 9d20: c12f20e4 c3ccb000 00000002 9071c570 c0a9fed8 00000000 c1e8bc10 c15f4284
[ 14.847850] 9d40: 00000000 c16c4ce4 c15f4284 00000000 c1969d7c c1969d60 c0a862c0 c0b45dac
[ 14.856068] 9d60: c1e8bc10 c16c4cdc 00000000 00000000 c1969dbc c1969d80 c0a8360c c0a86274
[ 14.864285] 9d80: c1969d9c c1969d90 c0faadd4 c0172e60 c1969dbc c1e8bc10 c15f4284 c1e8bc54
[ 14.872504] 9da0: c15f4284 c3d2b1b8 c1469854 00000000 c1969dec c1969dc0 c0a83eb8 c0a83510
[ 14.880722] 9dc0: c0a842d4 c15e9178 c1e8bc10 00000000 c1e8bc54 c15f4284 c3d2b1b8 c1469854
[ 14.888940] 9de0: c1969e0c c1969df0 c0a842cc c0a83dc4 c15f4284 c1e8bc10 c0a842d4 c15e9178
[ 14.897158] 9e00: c1969e2c c1969e10 c0a84388 c0a84220 00000000 c15f4284 c0a842d4 c15e9178
[ 14.905376] 9e20: c1969e5c c1969e30 c0a80e74 c0a842e0 c0faad70 c192b458 c1e727b4 9071c570
[ 14.913594] 9e40: c08f67a4 c15f4284 c3d2b180 00000000 c1969e6c c1969e60 c0a82cf0 c0a80dfc
[ 14.921812] 9e60: c1969e9c c1969e70 c0a82704 c0a82cd0 c12f21c4 c1969e80 c08f6c84 c15f4284
[ 14.930030] 9e80: 00000000 00000006 00000000 c1469834 c1969eb4 c1969ea0 c0a85004 c0a825ec
[ 14.938247] 9ea0: c15e9178 c19299c0 c1969ecc c1969eb8 c0a86214 c0a84f78 c143d0f8 c19299c0
[ 14.946465] 9ec0: c1969edc c1969ed0 c143d11c c0a861d0 c1969f4c c1969ee0 c01024cc c143d104
[ 14.954684] 9ee0: c0168118 c0167f5c c1969f4c c1969e00 c036a804 00000006 00000006 00000000
[ 14.962902] 9f00: 00000000 c13d2ce4 c14005bc c130d3cc 00000000 c1929a57 c1929a70 9071c570
[ 14.971120] 9f20: c1665000 c14005bc c19299c0 9071c570 c14b966c c19299c0 00000006 c1665000
[ 14.979338] 9f40: c1969f94 c1969f50 c1401578 c0102488 00000006 00000006 00000000 c14005bc
[ 14.987554] 9f60: c14005bc 0000012a c1969f8c 00000000 c0fa3050 00000000 00000000 00000000
[ 14.995771] 9f80: 00000000 00000000 c1969fac c1969f98 c0fa3068 c1401330 00000000 c0fa3050
[ 15.003989] 9fa0: 00000000 c1969fb0 c0100148 c0fa305c 00000000 00000000 00000000 00000000
[ 15.012207] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 15.020424] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 15.028636] Backtrace:
[ 15.031104] [<c0435088>] (kernfs_find_ns) from [<c0436d24>] (kernfs_remove_by_name_ns+0x44/0xd0)
[ 15.039932] r7:c3ccb1da r6:00000000 r5:00000000 r4:00000001
[ 15.045623] [<c0436ce0>] (kernfs_remove_by_name_ns) from [<c0439a10>] (sysfs_remove_link+0x30/0x34)
[ 15.054709] r6:c3c9b140 r5:000000cc r4:c1949dc0
[ 15.059355] [<c04399e0>] (sysfs_remove_link) from [<c096dd64>] (dma_release_channel+0x7c/0x108)
[ 15.068101] [<c096dce8>] (dma_release_channel) from [<c0b45678>] (omap2_mcspi_release_dma+0x64/0x94)
[ 15.077273] r4:00000004
[ 15.079823] [<c0b45614>] (omap2_mcspi_release_dma) from [<c0b460f4>] (omap2_mcspi_probe+0x354/0x574)
[ 15.089001] r10:c1234348 r9:c1e8bc10 r8:c3ccb000 r7:00000000 r6:fffffdfb r5:c3ccb380
[ 15.096865] r4:c1e8bd40
[ 15.099415] [<c0b45da0>] (omap2_mcspi_probe) from [<c0a862c0>] (platform_drv_probe+0x58/0xac)
[ 15.107981] r10:00000000 r9:c15f4284 r8:c16c4ce4 r7:00000000 r6:c15f4284 r5:c1e8bc10
[ 15.115844] r4:00000000
[ 15.118397] [<c0a86268>] (platform_drv_probe) from [<c0a8360c>] (really_probe+0x108/0x4f8)
[ 15.126700] r7:00000000 r6:00000000 r5:c16c4cdc r4:c1e8bc10
[ 15.132389] [<c0a83504>] (really_probe) from [<c0a83eb8>] (driver_probe_device+0x100/0x1d4)
[ 15.140782] r10:00000000 r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:c15f4284
[ 15.148645] r4:c1e8bc10
[ 15.151195] [<c0a83db8>] (driver_probe_device) from [<c0a842cc>] (device_driver_attach+0xb8/0xc0)
[ 15.160111] r9:c1469854 r8:c3d2b1b8 r7:c15f4284 r6:c1e8bc54 r5:00000000 r4:c1e8bc10
[ 15.167894] [<c0a84214>] (device_driver_attach) from [<c0a84388>] (__driver_attach+0xb4/0x148)
[ 15.176546] r7:c15e9178 r6:c0a842d4 r5:c1e8bc10 r4:c15f4284
[ 15.182235] [<c0a842d4>] (__driver_attach) from [<c0a80e74>] (bus_for_each_dev+0x84/0xd0)
[ 15.190451] r7:c15e9178 r6:c0a842d4 r5:c15f4284 r4:00000000
[ 15.196141] [<c0a80df0>] (bus_for_each_dev) from [<c0a82cf0>] (driver_attach+0x2c/0x30)
[ 15.204182] r6:00000000 r5:c3d2b180 r4:c15f4284
[ 15.208825] [<c0a82cc4>] (driver_attach) from [<c0a82704>] (bus_add_driver+0x124/0x218)
[ 15.216869] [<c0a825e0>] (bus_add_driver) from [<c0a85004>] (driver_register+0x98/0x128)
[ 15.224999] r8:c1469834 r7:00000000 r6:00000006 r5:00000000 r4:c15f4284
[ 15.231735] [<c0a84f6c>] (driver_register) from [<c0a86214>] (__platform_driver_register+0x50/0x58)
[ 15.240822] r5:c19299c0 r4:c15e9178
[ 15.244420] [<c0a861c4>] (__platform_driver_register) from [<c143d11c>] (omap2_mcspi_driver_init+0x24/0x28)
[ 15.254204] r5:c19299c0 r4:c143d0f8
[ 15.257801] [<c143d0f8>] (omap2_mcspi_driver_init) from [<c01024cc>] (do_one_initcall+0x50/0x2f4)
[ 15.266718] [<c010247c>] (do_one_initcall) from [<c1401578>] (kernel_init_freeable+0x254/0x2b0)
[ 15.275458] r7:c1665000 r6:00000006 r5:c19299c0 r4:c14b966c
[ 15.281147] [<c1401324>] (kernel_init_freeable) from [<c0fa3068>] (kernel_init+0x18/0x130)
[ 15.289452] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0fa3050
[ 15.297315] r4:00000000
[ 15.299864] [<c0fa3050>] (kernel_init) from [<c0100148>] (ret_from_fork+0x14/0x2c)
[ 15.307467] Exception stack(0xc1969fb0 to 0xc1969ff8)
[ 15.312543] 9fa0: 00000000 00000000 00000000 00000000
[ 15.320761] 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 15.328977] 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 15.335621] r5:c0fa3050 r4:00000000
[ 15.339218] Code: e24cb004 e24dd010 e52de004 e8bd4000 (e1d035b0)
[ 15.345504] ---[ end trace 4ae74a3734ec527f ]---
[ 15.350191] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 15.357898] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---
