Linux next-20220412 booting on arm beagle board x15 device found the following warnings. This is still happening on today's linux next-20220422.

[ 0.000000] Linux version 5.18.0-rc2-next-20220412 (tuxmake@tuxmake) (arm-linux-gnueabihf-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP @1649744781 [ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache [ 0.000000] OF: fdt: Machine model: TI AM5728 BeagleBoard-X15 [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] efi: UEFI not found. [ 0.000000] Reserved memory: created CMA memory pool at 0x95800000, size 56 MiB [ 0.000000] OF: reserved mem: initialized node ipu2-memory@95800000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created CMA memory pool at 0x99000000, size 64 MiB [ 0.000000] OF: reserved mem: initialized node dsp1-memory@99000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created CMA memory pool at 0x9d000000, size 32 MiB [ 0.000000] OF: reserved mem: initialized node ipu1-memory@9d000000, compatible id shared-dma-pool [ 0.000000] Reserved memory: created CMA memory pool at 0x9f000000, size 8 MiB [ 0.000000] OF: reserved mem: initialized node dsp2-memory@9f000000, compatible id shared-dma-pool [ 0.000000] cma: Reserved 64 MiB at 0xfb800000 [ 0.000000] OMAP4: Map 0xafe00000 to (ptrval) for dram barrier [ 0.000000] Zone ranges: [ 0.000000] DMA [mem 0x0000000080000000-0x00000000afdfffff] [ 0.000000] Normal empty [ 0.000000] HighMem [mem 0x00000000afe00000-0x00000000ffffefff] [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000080000000-0x00000000afdfffff] [ 0.000000] node 0: [mem 0x00000000b0000000-0x00000000ffffefff] [ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000000ffffefff] [ 0.000000] On node 0, zone HighMem: 512 pages in unavailable ranges [ 0.000000] DRA752 ES2.0 [ 0.000000] percpu: Embedded 16 pages/cpu s35028 r8192 d22316 u65536 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 522051 [ 0.000000] Kernel command line: console=ttyS2,115200n8 root=PARTUUID=008ff1a4-d1d9-294a-89cd-d80f952045d9 rw rootfstype=ext4 rootwait [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear) [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off [ 0.000000] Memory: 1812440K/2095100K available (16384K kernel code, 2662K rwdata, 8720K rodata, 2048K init, 649K bss, 53284K reserved, 229376K cma-reserved, 1245180K highmem) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] ftrace: allocating 59389 entries in 175 pages [ 0.000000] ftrace: allocated 174 pages with 5 groups [ 0.000000] trace event string verifier disabled [ 0.000000] rcu: Hierarchical RCU implementation. [ 0.000000] rcu: RCU event tracing is enabled. [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=2. [ 0.000000] Rude variant of Tasks RCU enabled. [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] GIC: Using split EOI/Deactivate mode [ 0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 0.000000] kfence: initialized - using 2097152 bytes for 255 objects at 0x(ptrval)-0x(ptrval) [ 0.000000] random: get_random_bytes called from start_kernel+0x54c/0x6fc with crng_init=0 [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at lib/refcount.c:25 kobject_get+0x9c/0xa0 [ 0.000000] refcount_t: addition on 0; use-after-free. [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.000000] unwind_backtrace from show_stack+0x18/0x1c [ 0.000000] show_stack from dump_stack_lvl+0x58/0x70 [ 0.000000] dump_stack_lvl from __warn+0xd0/0x144 [ 0.000000] __warn from warn_slowpath_fmt+0x98/0xbc [ 0.000000] warn_slowpath_fmt from kobject_get+0x9c/0xa0 [ 0.000000] kobject_get from of_node_get+0x1c/0x24 [ 0.000000] of_node_get from of_fwnode_get+0x3c/0x48 [ 0.000000] of_fwnode_get from fwnode_get_nth_parent+0x34/0x104 [ 0.000000] fwnode_get_nth_parent from fwnode_full_name_string+0x34/0xa0 [ 0.000000] fwnode_full_name_string from device_node_string+0x5fc/0x6c8 [ 0.000000] device_node_string from pointer+0x3c8/0x670 [ 0.000000] pointer from vsnprintf+0x22c/0x3cc [ 0.000000] vsnprintf from vprintk_store+0x114/0x43c [ 0.000000] vprintk_store from vprintk_emit+0x78/0x2bc [ 0.000000] vprintk_emit from vprintk_default+0x28/0x30 [ 0.000000] vprintk_default from _printk+0x30/0x54 [ 0.000000] _printk from of_node_release+0x124/0x12c [ 0.000000] of_node_release from kobject_put+0xc4/0x294 [ 0.000000] kobject_put from ti_dt_clocks_register+0x284/0x32c [ 0.000000] ti_dt_clocks_register from dra7xx_dt_clk_init+0x18/0x11c [ 0.000000] dra7xx_dt_clk_init from omap5_realtime_timer_init+0x10/0x21c [ 0.000000] omap5_realtime_timer_init from start_kernel+0x560/0x6fc [ 0.000000] start_kernel from 0x0 [ 0.000000] ---[ end trace 0000000000000000 ]--- login-action: exception # [ 0.000000] ------------[ cut # [login-action] Waiting for messages, (timeout 00:14:33) here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at lib/refcount.c:28 fwnode_get_nth_parent+0x50/0x104 [ 0.000000] refcount_t: underflow; use-after-free. [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.000000] unwind_backtrace from show_stack+0x18/0x1c [ 0.000000] show_stack from dump_stack_lvl+0x58/0x70 [ 0.000000] dump_stack_lvl from __warn+0xd0/0x144 [ 0.000000] __warn from warn_slowpath_fmt+0x98/0xbc [ 0.000000] warn_slowpath_fmt from fwnode_get_nth_parent+0x50/0x104 [ 0.000000] fwnode_get_nth_parent from fwnode_full_name_string+0x34/0xa0 [ 0.000000] fwnode_full_name_string from device_node_string+0x5fc/0x6c8 [ 0.000000] device_node_string from pointer+0x3c8/0x670 [ 0.000000] pointer from vsnprintf+0x22c/0x3cc [ 0.000000] vsnprintf from vprintk_store+0x114/0x43c [ 0.000000] vprintk_store from vprintk_emit+0x78/0x2bc [ 0.000000] vprintk_emit from vprintk_default+0x28/0x30 [ 0.000000] vprintk_default from _printk+0x30/0x54 [ 0.000000] _printk from of_node_release+0x124/0x12c [ 0.000000] of_node_release from kobject_put+0xc4/0x294 [ 0.000000] kobject_put from ti_dt_clocks_register+0x284/0x32c [ 0.000000] ti_dt_clocks_register from dra7xx_dt_clk_init+0x18/0x11c [ 0.000000] dra7xx_dt_clk_init from omap5_realtime_timer_init+0x10/0x21c [ 0.000000] omap5_realtime_timer_init from start_kernel+0x560/0x6fc [ 0.000000] start_kernel from 0x0 [ 0.000000] ---[ end trace 0000000000000000 ]--- login-action: exception # [ 0.000000] ------------[ cut here ]--------# [login-action] Waiting for messages, (timeout 00:14:33) ---- [ 0.000000] WARNING: CPU: 0 PID: 0 at lib/refcount.c:22 kobject_get+0x88/0xa0 [ 0.000000] refcount_t: saturated; leaking memory. [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.000000] unwind_backtrace from show_stack+0x18/0x1c [ 0.000000] show_stack from dump_stack_lvl+0x58/0x70 [ 0.000000] dump_stack_lvl from __warn+0xd0/0x144 [ 0.000000] __warn from warn_slowpath_fmt+0x98/0xbc [ 0.000000] warn_slowpath_fmt from kobject_get+0x88/0xa0 [ 0.000000] kobject_get from of_node_get+0x1c/0x24 [ 0.000000] of_node_get from of_fwnode_get+0x3c/0x48 [ 0.000000] of_fwnode_get from fwnode_get_nth_parent+0x34/0x104 [ 0.000000] fwnode_get_nth_parent from fwnode_full_name_string+0x34/0xa0 [ 0.000000] fwnode_full_name_string from device_node_string+0x5fc/0x6c8 [ 0.000000] device_node_string from pointer+0x3c8/0x670 [ 0.000000] pointer from vsnprintf+0x22c/0x3cc [ 0.000000] vsnprintf from vprintk_store+0x114/0x43c [ 0.000000] vprintk_store from vprintk_emit+0x78/0x2bc [ 0.000000] vprintk_emit from vprintk_default+0x28/0x30 [ 0.000000] vprintk_default from _printk+0x30/0x54 [ 0.000000] _printk from of_node_release+0x124/0x12c [ 0.000000] of_node_release from kobject_put+0xc4/0x294 [ 0.000000] kobject_put from ti_dt_clocks_register+0x284/0x32c [ 0.000000] ti_dt_clocks_register from dra7xx_dt_clk_init+0x18/0x11c [ 0.000000] dra7xx_dt_clk_init from omap5_realtime_timer_init+0x10/0x21c [ 0.000000] omap5_realtime_timer_init from start_kernel+0x560/0x6fc [ 0.000000] start_kernel from 0x0 [ 0.000000] ---[ end trace 0000000000000000 ]--- login-action: exception # [ 0.000000] OF: ERROR: Bad of_node_put() on /ocp/interconnect@4a000000/segment@0/targe# [login-action] Waiting for messages, (timeout 00:14:33) t-module@8000/cm_core@0/clock@c00/clock@0 [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.000000] unwind_backtrace from show_stack+0x18/0x1c [ 0.000000] show_stack from dump_stack_lvl+0x58/0x70 [ 0.000000] dump_stack_lvl from kobject_put+0xc4/0x294 [ 0.000000] kobject_put from ti_dt_clocks_register+0x284/0x32c [ 0.000000] ti_dt_clocks_register from dra7xx_dt_clk_init+0x18/0x11c [ 0.000000] dra7xx_dt_clk_init from omap5_realtime_timer_init+0x10/0x21c [ 0.000000] omap5_realtime_timer_init from start_kernel+0x560/0x6fc [ 0.000000] start_kernel from 0x0 [ 0.000000] OF: ERROR: Bad of_node_put() on /ocp/interconnect@4a000000/segment@0/target-module@8000/cm_core@0/clock@1100/clock@20 [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.000000] unwind_backtrace from show_stack+0x18/0x1c [ 0.000000] show_stack from dump_stack_lvl+0x58/0x70 [ 0.000000] dump_stack_lvl from kobject_put+0xc4/0x294 [ 0.000000] kobject_put from ti_dt_clocks_register+0x284/0x32c [ 0.000000] ti_dt_clocks_register from dra7xx_dt_clk_init+0x18/0x11c [ 0.000000] dra7xx_dt_clk_init from omap5_realtime_timer_init+0x10/0x21c [ 0.000000] omap5_realtime_timer_init from start_kernel+0x560/0x6fc [ 0.000000] start_kernel from 0x0 [ 0.000000] OF: ERROR: Bad of_node_put() on /ocp/interconnect@4ae00000/segment@0/target-module@6000/prm@0/clock@1800/clock@20 [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.18.0-rc2-next-20220412 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree)

link: https://lkft.validation.linaro.org/scheduler/job/4882391#L2104

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

metadata: git_ref: master git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: d0c745e7b2d6ce8bcc768b32361ab8ef520821ee git_describe: next-20220412 kernel_version: 5.18.0-rc2 kernel-config: https://builds.tuxbuild.com/27gbKLQxkCjWcdfqbhpWsh5Ocq0/config build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/514668403 artifact-location: https://builds.tuxbuild.com/27gbKLQxkCjWcdfqbhpWsh5Ocq0 toolchain: gcc-10

-- Linaro LKFT https://lkft.linaro.org