[adding the maintainer for drivers/leds/leds-mt6323.c as well as the LED subsystem maintainers to the list of recipients] Note, I first thought this might have been a vendor kernel, but it's not, as Tobias clarified (thx!): https://lore.kernel.org/all/f8f7d7ae-7e4b-e0fb-6a21-1d4fdcc22035@xxxxxx/ [TLDR for the rest of this mail: I'm adding below report to the list of tracked Linux kernel regressions; the text you find below is based on a few templates paragraphs you might have encountered already in similar form. See link in footer if these mails annoy you.] On 20.03.23 20:44, Tobias Dahms wrote: > Hello, > > since some kernel versions I get a kernel errror while setting led > trigger to phy0tpt. > > command to reproduce: > echo phy0tpt > /sys/class/leds/bpi-r2\:isink\:blue/trigger > > same trigger, other led location => no error: > echo phy0tpt > /sys/class/leds/bpi-r2\:pio\:blue/trigger > > other trigger, same led location => no error: > echo phy0tx > /sys/class/leds/bpi-r2\:isink\:blue/trigger > > last good kernel: > bpi-r2 5.19.17-bpi-r2 > > error at kernel versions: > bpi-r2 6.0.19-bpi-r2 > up to > bpi-r2 6.3.0-rc1-bpi-r2+ > > wireless lan card: > 01:00.0 Network controller: MEDIATEK Corp. MT7612E 802.11acbgn PCI > Express Wireless Network Adapter > > distribution: > Arch-Linux-ARM (with vanilla kernel instead of original distribution > kernel) > > board: > BananaPi-R2 > > log messages: > Mär 12 12:54:55 bpi-r2 kernel: BUG: scheduling while atomic: > swapper/0/0/0x00000100 > Mär 12 12:54:55 bpi-r2 kernel: Modules linked in: aes_arm_bs crypto_simd > cryptd nft_masq nft_ct nf_log_syslog nft_log nft_chain_nat nf_nat > nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink mt76x2e > mt76x2_common mt76x02_lib mt76 spi_mt65xx pwm_mediatek mt6577_auxadc > sch_fq_codel fuse configfs ip_tables x_tables > Mär 12 12:54:55 bpi-r2 kernel: CPU: 0 PID: 0 Comm: swapper/0 Not tainted > 6.3.0-rc1-bpi-r2+ #1 > Mär 12 12:54:55 bpi-r2 kernel: Hardware name: Mediatek Cortex-A7 (Device > Tree) > Mär 12 12:54:55 bpi-r2 kernel: Backtrace: > Mär 12 12:54:55 bpi-r2 kernel: dump_backtrace from show_stack+0x20/0x24 > Mär 12 12:54:55 bpi-r2 kernel: r7:c14ab340 r6:00000000 r5:c12507fc > r4:600f0113 > Mär 12 12:54:55 bpi-r2 kernel: show_stack from dump_stack_lvl+0x48/0x54 > Mär 12 12:54:55 bpi-r2 kernel: dump_stack_lvl from dump_stack+0x18/0x1c > Mär 12 12:54:55 bpi-r2 kernel: r5:c1508fc0 r4:00000000 > Mär 12 12:54:55 bpi-r2 kernel: dump_stack from __schedule_bug+0x60/0x70 > Mär 12 12:54:55 bpi-r2 kernel: __schedule_bug from __schedule+0x6b0/0x904 > Mär 12 12:54:55 bpi-r2 kernel: r5:c1508fc0 r4:eed9d340 > Mär 12 12:54:55 bpi-r2 kernel: __schedule from schedule+0x6c/0xe8 > Mär 12 12:54:55 bpi-r2 kernel: r10:c1501ba0 r9:00000000 r8:00001b58 > r7:c1508fc0 r6:00001b58 r5:0000004a > Mär 12 12:54:55 bpi-r2 kernel: r4:c1508fc0 > Mär 12 12:54:55 bpi-r2 kernel: schedule from > schedule_hrtimeout_range_clock+0xec/0x14c > Mär 12 12:54:55 bpi-r2 kernel: r5:0000004a r4:47ac1837 > Mär 12 12:54:55 bpi-r2 kernel: schedule_hrtimeout_range_clock from > schedule_hrtimeout_range+0x28/0x30 > Mär 12 12:54:55 bpi-r2 kernel: r10:c1501c50 r9:c1508fc0 r8:00000002 > r7:00000000 r6:c1501ba0 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:00001b58 > Mär 12 12:54:55 bpi-r2 kernel: schedule_hrtimeout_range from > usleep_range_state+0x6c/0x90 > Mär 12 12:54:55 bpi-r2 kernel: usleep_range_state from > pwrap_read16+0xfc/0x2a0 > Mär 12 12:54:55 bpi-r2 kernel: r9:0000004a r8:4844840c r7:0000004a > r6:48447f8a r5:01980000 r4:c2703940 > Mär 12 12:54:55 bpi-r2 kernel: pwrap_read16 from > pwrap_regmap_read+0x24/0x28 > Mär 12 12:54:55 bpi-r2 kernel: r10:00001f00 r9:00000000 r8:00000f00 > r7:c2703940 r6:c1501c50 r5:00000330 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 r3:c06f3fbc > Mär 12 12:54:55 bpi-r2 kernel: pwrap_regmap_read from > _regmap_read+0x70/0x160 > Mär 12 12:54:55 bpi-r2 kernel: _regmap_read from > _regmap_update_bits+0xc8/0x108 > Mär 12 12:54:55 bpi-r2 kernel: r10:00001f00 r9:00000000 r8:00000f00 > r7:c1508fc0 r6:00000330 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 r3:00000000 > Mär 12 12:54:55 bpi-r2 kernel: _regmap_update_bits from > regmap_update_bits_base+0x60/0x84 > Mär 12 12:54:55 bpi-r2 kernel: r10:00000000 r9:00000f00 r8:00000000 > r7:00001f00 r6:00000000 r5:00000330 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 > Mär 12 12:54:55 bpi-r2 kernel: regmap_update_bits_base from > mt6323_led_set_blink+0xf0/0x148 > Mär 12 12:54:55 bpi-r2 kernel: r10:eed94800 r9:c16998c0 r8:c196e000 > r7:c31f0c48 r6:c2456f48 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:0000014e > Mär 12 12:54:55 bpi-r2 kernel: mt6323_led_set_blink from > led_blink_setup+0x3c/0x110 > Mär 12 12:54:55 bpi-r2 kernel: r9:c16998c0 r8:00000770 r7:c1501d60 > r6:c1501d5c r5:c1501d60 r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_blink_setup from > led_blink_set+0x60/0x64 > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501d60 r6:c1501d5c r5:c31f0c58 > r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_blink_set from > led_trigger_blink+0x44/0x58 > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501d60 r6:c1501d5c r5:c5b69740 > r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_trigger_blink from > tpt_trig_timer+0x10c/0x130 > Mär 12 12:54:55 bpi-r2 kernel: r7:c0df71f0 r6:c1508fc0 r5:c5b685a0 > r4:c597b628 > Mär 12 12:54:55 bpi-r2 kernel: tpt_trig_timer from > call_timer_fn+0x48/0x168 > Mär 12 12:54:55 bpi-r2 kernel: r6:c597b628 r5:00000100 r4:c16998c0 > Mär 12 12:54:55 bpi-r2 kernel: call_timer_fn from > run_timer_softirq+0x600/0x6c8 > Mär 12 12:54:55 bpi-r2 kernel: r9:c16998c0 r8:00000000 r7:00000770 > r6:00000000 r5:c1501de4 r4:c597b628 > Mär 12 12:54:55 bpi-r2 kernel: run_timer_softirq from > __do_softirq+0x140/0x34c > Mär 12 12:54:55 bpi-r2 kernel: r10:00000082 r9:00000100 r8:c1698481 > r7:c1698f60 r6:00000001 r5:00000002 > Mär 12 12:54:55 bpi-r2 kernel: r4:c1503084 > Mär 12 12:54:55 bpi-r2 kernel: __do_softirq from irq_exit+0xb8/0xe8 > Mär 12 12:54:55 bpi-r2 kernel: r10:10c5387d r9:c1508fc0 r8:c1698481 > r7:c1501f0c r6:00000000 r5:c1501ed8 > Mär 12 12:54:55 bpi-r2 kernel: r4:c14aaf58 > Mär 12 12:54:55 bpi-r2 kernel: irq_exit from > generic_handle_arch_irq+0x48/0x4c > Mär 12 12:54:55 bpi-r2 kernel: r5:c1501ed8 r4:c14aaf58 > Mär 12 12:54:55 bpi-r2 kernel: generic_handle_arch_irq from > __irq_svc+0x88/0xb0 > Mär 12 12:54:55 bpi-r2 kernel: Exception stack(0xc1501ed8 to 0xc1501f20) > Mär 12 12:54:55 bpi-r2 kernel: 1ec0: > 000862f4 2d8f2000 > Mär 12 12:54:55 bpi-r2 kernel: 1ee0: c1508fc0 00000000 c1699cc0 c1504f10 > c1504f70 00000001 c1698481 c123a9b4 > Mär 12 12:54:55 bpi-r2 kernel: 1f00: 10c5387d c1501f3c 00000001 c1501f28 > c0e36fa0 c0e3767c 600f0013 ffffffff > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501f0c r6:ffffffff r5:600f0013 > r4:c0e3767c > Mär 12 12:54:55 bpi-r2 kernel: default_idle_call from do_idle+0xc4/0x124 > Mär 12 12:54:55 bpi-r2 kernel: r5:c1504f10 r4:00000001 > Mär 12 12:54:55 bpi-r2 kernel: do_idle from cpu_startup_entry+0x28/0x2c > Mär 12 12:54:55 bpi-r2 kernel: r9:efffcd40 r8:00000000 r7:00000045 > r6:c1326068 r5:c16fb9b8 r4:000000ec > Mär 12 12:54:55 bpi-r2 kernel: cpu_startup_entry from rest_init+0xc0/0xc4 > Mär 12 12:54:55 bpi-r2 kernel: rest_init from > arch_post_acpi_subsys_init+0x0/0x30 > Mär 12 12:54:55 bpi-r2 kernel: r5:c16fb9b8 r4:c16cc038 > Mär 12 12:54:55 bpi-r2 kernel: arch_call_rest_init from > start_kernel+0x6c0/0x704 > Mär 12 12:54:55 bpi-r2 kernel: start_kernel from 0x0 > Mär 12 12:54:55 bpi-r2 kernel: bad: scheduling from the idle thread! > Mär 12 12:54:55 bpi-r2 kernel: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G > W 6.3.0-rc1-bpi-r2+ #1 > Mär 12 12:54:55 bpi-r2 kernel: Hardware name: Mediatek Cortex-A7 (Device > Tree) > Mär 12 12:54:55 bpi-r2 kernel: Backtrace: > Mär 12 12:54:55 bpi-r2 kernel: dump_backtrace from show_stack+0x20/0x24 > Mär 12 12:54:55 bpi-r2 kernel: r7:c14ab340 r6:00000001 r5:c12507fc > r4:60070013 > Mär 12 12:54:55 bpi-r2 kernel: show_stack from dump_stack_lvl+0x48/0x54 > Mär 12 12:54:55 bpi-r2 kernel: dump_stack_lvl from dump_stack+0x18/0x1c > Mär 12 12:54:55 bpi-r2 kernel: r5:c1508fc0 r4:eed9d340 > Mär 12 12:54:55 bpi-r2 kernel: dump_stack from dequeue_task_idle+0x30/0x44 > Mär 12 12:54:55 bpi-r2 kernel: dequeue_task_idle from > __schedule+0x4bc/0x904 > Mär 12 12:54:55 bpi-r2 kernel: r5:c1508fc0 r4:eed9d340 > Mär 12 12:54:55 bpi-r2 kernel: __schedule from schedule+0x6c/0xe8 > Mär 12 12:54:55 bpi-r2 kernel: r10:c1501ba0 r9:00000000 r8:00001b58 > r7:c1508fc0 r6:00001b58 r5:0000004a > Mär 12 12:54:55 bpi-r2 kernel: r4:c1508fc0 > Mär 12 12:54:55 bpi-r2 kernel: schedule from > schedule_hrtimeout_range_clock+0xec/0x14c > Mär 12 12:54:55 bpi-r2 kernel: r5:0000004a r4:492d8817 > Mär 12 12:54:55 bpi-r2 kernel: schedule_hrtimeout_range_clock from > schedule_hrtimeout_range+0x28/0x30 > Mär 12 12:54:55 bpi-r2 kernel: r10:c1501c50 r9:c1508fc0 r8:00000002 > r7:00000000 r6:c1501ba0 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:00001b58 > Mär 12 12:54:55 bpi-r2 kernel: schedule_hrtimeout_range from > usleep_range_state+0x6c/0x90 > Mär 12 12:54:55 bpi-r2 kernel: usleep_range_state from > pwrap_read16+0xfc/0x2a0 > Mär 12 12:54:55 bpi-r2 kernel: r9:0000004a r8:49c5f439 r7:0000004a > r6:49c5f0eb r5:01990000 r4:c2703940 > Mär 12 12:54:55 bpi-r2 kernel: pwrap_read16 from > pwrap_regmap_read+0x24/0x28 > Mär 12 12:54:55 bpi-r2 kernel: r10:0000ffff r9:00000000 r8:0000014d > r7:c2703940 r6:c1501c50 r5:00000332 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 r3:c06f3fbc > Mär 12 12:54:55 bpi-r2 kernel: pwrap_regmap_read from > _regmap_read+0x70/0x160 > Mär 12 12:54:55 bpi-r2 kernel: _regmap_read from > _regmap_update_bits+0xc8/0x108 > Mär 12 12:54:55 bpi-r2 kernel: r10:0000ffff r9:00000000 r8:0000014d > r7:c1508fc0 r6:00000332 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 r3:00000000 > Mär 12 12:54:55 bpi-r2 kernel: _regmap_update_bits from > regmap_update_bits_base+0x60/0x84 > Mär 12 12:54:55 bpi-r2 kernel: r10:00000000 r9:0000014d r8:00000000 > r7:0000ffff r6:00000000 r5:00000332 > Mär 12 12:54:55 bpi-r2 kernel: r4:c196e000 > Mär 12 12:54:55 bpi-r2 kernel: regmap_update_bits_base from > mt6323_led_set_blink+0x138/0x148 > Mär 12 12:54:55 bpi-r2 kernel: r10:eed94800 r9:00000000 r8:c196e000 > r7:c31f0c48 r6:c2456f48 r5:00000000 > Mär 12 12:54:55 bpi-r2 kernel: r4:0000014e > Mär 12 12:54:55 bpi-r2 kernel: mt6323_led_set_blink from > led_blink_setup+0x3c/0x110 > Mär 12 12:54:55 bpi-r2 kernel: r9:c16998c0 r8:00000770 r7:c1501d60 > r6:c1501d5c r5:c1501d60 r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_blink_setup from > led_blink_set+0x60/0x64 > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501d60 r6:c1501d5c r5:c31f0c58 > r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_blink_set from > led_trigger_blink+0x44/0x58 > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501d60 r6:c1501d5c r5:c5b69740 > r4:c31f0c48 > Mär 12 12:54:55 bpi-r2 kernel: led_trigger_blink from > tpt_trig_timer+0x10c/0x130 > Mär 12 12:54:55 bpi-r2 kernel: r7:c0df71f0 r6:c1508fc0 r5:c5b685a0 > r4:c597b628 > Mär 12 12:54:55 bpi-r2 kernel: tpt_trig_timer from > call_timer_fn+0x48/0x168 > Mär 12 12:54:55 bpi-r2 kernel: r6:c597b628 r5:00000100 r4:c16998c0 > Mär 12 12:54:55 bpi-r2 kernel: call_timer_fn from > run_timer_softirq+0x600/0x6c8 > Mär 12 12:54:55 bpi-r2 kernel: r9:c16998c0 r8:00000000 r7:00000770 > r6:00000000 r5:c1501de4 r4:c597b628 > Mär 12 12:54:55 bpi-r2 kernel: run_timer_softirq from > __do_softirq+0x140/0x34c > Mär 12 12:54:55 bpi-r2 kernel: r10:00000082 r9:00000100 r8:c1698481 > r7:c1698f60 r6:00000001 r5:00000002 > Mär 12 12:54:55 bpi-r2 kernel: r4:c1503084 > Mär 12 12:54:55 bpi-r2 kernel: __do_softirq from irq_exit+0xb8/0xe8 > Mär 12 12:54:55 bpi-r2 kernel: r10:10c5387d r9:c1508fc0 r8:c1698481 > r7:c1501f0c r6:00000000 r5:c1501ed8 > Mär 12 12:54:55 bpi-r2 kernel: r4:c14aaf58 > Mär 12 12:54:55 bpi-r2 kernel: irq_exit from > generic_handle_arch_irq+0x48/0x4c > Mär 12 12:54:55 bpi-r2 kernel: r5:c1501ed8 r4:c14aaf58 > Mär 12 12:54:55 bpi-r2 kernel: generic_handle_arch_irq from > __irq_svc+0x88/0xb0 > Mär 12 12:54:55 bpi-r2 kernel: Exception stack(0xc1501ed8 to 0xc1501f20) > Mär 12 12:54:55 bpi-r2 kernel: 1ec0: > 000862f4 2d8f2000 > Mär 12 12:54:55 bpi-r2 kernel: 1ee0: c1508fc0 00000000 c1699cc0 c1504f10 > c1504f70 00000001 c1698481 c123a9b4 > Mär 12 12:54:55 bpi-r2 kernel: 1f00: 10c5387d c1501f3c 00000001 c1501f28 > c0e36fa0 c0e3767c 600f0013 ffffffff > Mär 12 12:54:55 bpi-r2 kernel: r7:c1501f0c r6:ffffffff r5:600f0013 > r4:c0e3767c > Mär 12 12:54:55 bpi-r2 kernel: default_idle_call from do_idle+0xc4/0x124 > Mär 12 12:54:55 bpi-r2 kernel: r5:c1504f10 r4:00000001 > Mär 12 12:54:55 bpi-r2 kernel: do_idle from cpu_startup_entry+0x28/0x2c > Mär 12 12:54:55 bpi-r2 kernel: r9:efffcd40 r8:00000000 r7:00000045 > r6:c1326068 r5:c16fb9b8 r4:000000ec > Mär 12 12:54:55 bpi-r2 kernel: cpu_startup_entry from rest_init+0xc0/0xc4 > Mär 12 12:54:55 bpi-r2 kernel: rest_init from > arch_post_acpi_subsys_init+0x0/0x30 > Mär 12 12:54:55 bpi-r2 kernel: r5:c16fb9b8 r4:c16cc038 > Mär 12 12:54:55 bpi-r2 kernel: arch_call_rest_init from > start_kernel+0x6c0/0x704 > Mär 12 12:54:55 bpi-r2 kernel: start_kernel from 0x0 > Mär 12 12:54:55 bpi-r2 kernel: ------------[ cut here ]------------ Thanks for the report. To be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression tracking bot: #regzbot ^introduced v5.19..v6.0 #regzbot title led: kernel bug when setting trigger to "phy0tpt" #regzbot ignore-activity This isn't a regression? This issue or a fix for it are already discussed somewhere else? It was fixed already? You want to clarify when the regression started to happen? Or point out I got the title or something else totally wrong? Then just reply and tell me -- ideally while also telling regzbot about it, as explained by the page listed in the footer of this mail. Developers: When fixing the issue, remember to add 'Link:' tags pointing to the report (the parent of this mail). See page linked in footer for details. Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you.
