Hi Guenter, On Thu, 9 Jun 2022 at 05:24, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: > > On Tue, Jun 07, 2022 at 06:53:12PM +0200, Greg Kroah-Hartman wrote: > > This is the start of the stable review cycle for the 5.17.14 release. > > There are 772 patches in this series, all will be posted as a response > > to this one. If anyone has any issues with these being applied, please > > let me know. > > > > Responses should be made by Thu, 09 Jun 2022 16:48:02 +0000. > > Anything received after that time might be too late. > > > > Build results: > total: 158 pass: 158 fail: 0 > Qemu test results: > total: 489 pass: 489 fail: 0 > > Tested-by: Guenter Roeck <linux@xxxxxxxxxxxx> > > I see a new boot warning in some arm qemu tests, but that is related > to enabling CONFIG_KFENCE and not a new problem. v5.17.y and v5.18.y > are affected. In LKFT we have been noticing this warning on the mainline, Linux-next, 5.18 and 5.17 on qemu-arm, and on x15 devices intermittently. > [ 8.157727] ------------[ cut here ]------------ > [ 8.157843] WARNING: CPU: 0 PID: 0 at kernel/smp.c:894 smp_call_function_many_cond+0x38c/0x3a4 > [ 8.158289] Modules linked in: > [ 8.158489] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.17.14-rc1-00773-gd0f9b2818e1e #1 > [ 8.158564] Hardware name: ARM-Versatile Express > [ 8.158730] unwind_backtrace from show_stack+0x10/0x14 > [ 8.158802] show_stack from dump_stack_lvl+0x50/0x6c > [ 8.158835] dump_stack_lvl from __warn+0xd0/0x19c > [ 8.158863] __warn from warn_slowpath_fmt+0x5c/0xb4 > [ 8.158890] warn_slowpath_fmt from smp_call_function_many_cond+0x38c/0x3a4 > [ 8.158919] smp_call_function_many_cond from smp_call_function+0x3c/0x50 > [ 8.158947] smp_call_function from set_memory_valid+0x74/0x94 > [ 8.158975] set_memory_valid from kfence_guarded_free+0x280/0x4b4 > [ 8.159005] kfence_guarded_free from kmem_cache_free+0x2f4/0x394 > [ 8.159032] kmem_cache_free from rcu_core+0x358/0xc34 > [ 8.159062] rcu_core from __do_softirq+0xf0/0x41c > [ 8.159101] __do_softirq from irq_exit+0xa4/0xd4 > [ 8.159127] irq_exit from __irq_svc+0x50/0x68 > > Guenter [ 0.000000] Linux version 5.19.0-rc1 (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 @1654710061 [ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: div instructions available: patching division code <trim> [ 0.000000] kfence: initialized - using 2097152 bytes for 255 objects at 0x(ptrval)-0x(ptrval) [ 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 5.19.0-rc1 #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+0xd4/0x14c [ 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_full_name_string+0x34/0xa0 [ 0.000000] fwnode_full_name_string from device_node_string+0x5fc/0x6c8 [ 0.000000] device_node_string from pointer+0x38c/0x5b0 [ 0.000000] pointer from vsnprintf+0x22c/0x3cc [ 0.000000] vsnprintf from vprintk_store+0x114/0x43c [ 0.000000] vprintk_store from vprintk_emit+0x78/0x2ac [ 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+0x558/0x718 [ 0.000000] start_kernel from 0x0 [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: CPU: 0 PID: 0 at lib/refcount.c:28 fwnode_full_name_string+0x8c/0xa0 [ 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 5.19.0-rc1 #1 [ 0.000000] Hardware name: Generic DRA74X (Flattened Device Tree) <trim> [ 0.000000] OF: ERROR: Bad of_node_put() on /ocp/interconnect@4a000000/segment@0/target-module@8000/cm_core@0/clock@c00/clock@0 [ 0.000000] ------------[ cut here ]------------ <trim> [ 7.246032] ------------[ cut here ]------------ [ 7.246063] WARNING: CPU: 1 PID: 0 at kernel/smp.c:913 smp_call_function_many_cond+0x3a0/0x3b0 [ 7.259399] Modules linked in: [ 7.262481] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 5.19.0-rc1 #1 [ 7.270202] Hardware name: Generic DRA74X (Flattened Device Tree) [ 7.276336] unwind_backtrace from show_stack+0x18/0x1c [ 7.281585] show_stack from dump_stack_lvl+0x58/0x70 [ 7.286682] dump_stack_lvl from __warn+0xd4/0x14c [ 7.291503] __warn from warn_slowpath_fmt+0x64/0xbc [ 7.296508] warn_slowpath_fmt from smp_call_function_many_cond+0x3a0/0x3b0 [ 7.303527] smp_call_function_many_cond from smp_call_function+0x34/0x3c [ 7.310363] smp_call_function from set_memory_valid+0x7c/0x9c [ 7.316223] set_memory_valid from kfence_guarded_free+0x284/0x4b0 [ 7.322448] kfence_guarded_free from kmem_cache_free+0x3a0/0x484 [ 7.328582] kmem_cache_free from rcu_core+0x2c0/0x964 [ 7.333770] rcu_core from __do_softirq+0x168/0x400 [ 7.338684] __do_softirq from irq_exit+0xc0/0xf0 [ 7.343414] irq_exit from call_with_stack+0x18/0x20 [ 7.348419] call_with_stack from __irq_svc+0x9c/0xb8 [ 7.353515] Exception stack(0xf0045f40 to 0xf0045f88) [ 7.358581] 5f40: 00001770 00000000 fe600000 00000000 c2165260 c29e1500 c1f09f50 c1f09fb0 [ 7.366821] 5f60: c1e95b28 c2163ad4 00000000 00000000 00000000 f0045f90 c0335434 c030983c [ 7.375030] 5f80: 600e0013 ffffffff [ 7.378540] __irq_svc from arch_cpu_idle+0x28/0x44 [ 7.383453] arch_cpu_idle from default_idle_call+0x50/0xd0 [ 7.389068] default_idle_call from do_idle+0x224/0x2cc [ 7.394348] do_idle from cpu_startup_entry+0x20/0x24 [ 7.399414] cpu_startup_entry from secondary_start_kernel+0x13c/0x15c [ 7.405975] secondary_start_kernel from 0x80302180 [ 7.410919] ---[ end trace 0000000000000000 ]--- you may refer to this warning log on the mainline. https://qa-reports.linaro.org/lkft/linux-mainline-master/build/v5.19-rc1-23-g34f4335c16a5/testrun/10066624/suite/log-parser-boot/tests/ - Naresh
