Hi Greg, On Mon, Aug 15, 2022 at 7:55 PM Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > This is the start of the stable review cycle for the 5.18.18 release. > There are 1095 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 Wed, 17 Aug 2022 18:01:29 +0000. > Anything received after that time might be too late. Both v5.18.18-rc1 and v5.15.61-rc1 has hung task in RPI4B causing a huge delay in bootup. This is from v5.18.18-rc1. [ 846.815074] INFO: task systemd-udevd:192 blocked for more than 724 seconds. [ 846.822452] Tainted: G WC 5.18.18-rc1 #1 [ 846.828961] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 846.837557] task:systemd-udevd state:D stack: 0 pid: 192 ppid: 177 flags:0x00000009 [ 846.837582] Call trace: [ 846.837589] __switch_to+0xf8/0x150 [ 846.837611] __schedule+0x3cc/0xa0c [ 846.837623] schedule+0x68/0x104 [ 846.837634] schedule_preempt_disabled+0x30/0x4c [ 846.837646] __mutex_lock.constprop.0+0x168/0x55c [ 846.837658] __mutex_lock_slowpath+0x1c/0x30 [ 846.837669] mutex_lock+0x50/0x60 [ 846.837680] usb_udc_uevent+0x58/0xf0 [udc_core] [ 846.837718] dev_uevent+0x134/0x2e0 [ 846.837732] kobject_uevent_env+0x298/0x764 [ 846.837744] kobject_uevent+0x14/0x20 [ 846.837753] device_add+0x398/0x8a0 [ 846.837764] usb_add_gadget+0x110/0x1bc [udc_core] [ 846.837791] usb_add_gadget_udc+0x7c/0xc0 [udc_core] [ 846.837817] dwc2_driver_probe+0x5e0/0x7a0 [dwc2] [ 846.837869] platform_probe+0x74/0xd0 [ 846.837880] really_probe+0x180/0x3cc [ 846.837893] __driver_probe_device+0x11c/0x190 [ 846.837905] driver_probe_device+0x44/0xf4 [ 846.837917] __driver_attach+0xd8/0x1b0 [ 846.837930] bus_for_each_dev+0x7c/0xe0 [ 846.837941] driver_attach+0x30/0x40 [ 846.837953] bus_add_driver+0x154/0x240 [ 846.837964] driver_register+0x84/0x140 [ 846.837977] __platform_driver_register+0x34/0x40 [ 846.837987] dwc2_platform_driver_init+0x2c/0x1000 [dwc2] [ 846.838035] do_one_initcall+0x50/0x2c0 [ 846.838047] do_init_module+0x50/0x260 [ 846.838061] load_module+0x2298/0x2720 [ 846.838074] __do_sys_finit_module+0xac/0x12c [ 846.838087] __arm64_sys_finit_module+0x2c/0x40 [ 846.838099] invoke_syscall+0x50/0x120 [ 846.838113] el0_svc_common.constprop.0+0x6c/0x1a0 [ 846.838126] do_el0_svc+0x30/0x90 [ 846.838138] el0_svc+0x30/0xd0 [ 846.838147] el0t_64_sync_handler+0x10c/0x140 [ 846.838158] el0t_64_sync+0x1a0/0x1a4 [ 846.838179] INFO: task udevadm:964 blocked for more than 362 seconds. [ 846.845473] Tainted: G WC 5.18.18-rc1 #1 [ 846.851891] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 846.860543] task:udevadm state:D stack: 0 pid: 964 ppid: 1 flags:0x00000000 [ 846.860555] Call trace: [ 846.860560] __switch_to+0xf8/0x150 [ 846.860569] __schedule+0x3cc/0xa0c [ 846.860576] schedule+0x68/0x104 [ 846.860582] schedule_preempt_disabled+0x30/0x4c [ 846.860589] __mutex_lock.constprop.0+0x168/0x55c [ 846.860596] __mutex_lock_slowpath+0x1c/0x30 [ 846.860603] mutex_lock+0x50/0x60 [ 846.860610] usb_udc_uevent+0x58/0xf0 [udc_core] [ 846.860629] dev_uevent+0x134/0x2e0 [ 846.860637] uevent_show+0x98/0x124 [ 846.860643] dev_attr_show+0x2c/0x6c [ 846.860649] sysfs_kf_seq_show+0x98/0x110 [ 846.860656] kernfs_seq_show+0x38/0x44 [ 846.860664] seq_read_iter+0x170/0x48c [ 846.860674] kernfs_fop_read_iter+0x198/0x1d4 [ 846.860681] new_sync_read+0xd8/0x15c [ 846.860689] vfs_read+0x19c/0x1e4 [ 846.860697] ksys_read+0x78/0x110 [ 846.860704] __arm64_sys_read+0x28/0x34 [ 846.860711] invoke_syscall+0x50/0x120 [ 846.860719] el0_svc_common.constprop.0+0x6c/0x1a0 [ 846.860727] do_el0_svc+0x30/0x90 [ 846.860734] el0_svc+0x30/0xd0 [ 846.860740] el0t_64_sync_handler+0x10c/0x140 [ 846.860746] el0t_64_sync+0x1a0/0x1a4 Apart from the call trace from the hung task I can also see another warning. [ 14.841402] ------------[ cut here ]------------ [ 14.845855] Bluetooth: HCI UART protocol ATH3K registered [ 14.851200] WARNING: CPU: 0 PID: 184 at drivers/gpu/drm/vc4/vc4_hdmi_regs.h:450 vc5_hdmi_reset+0x1f4/0x234 [vc4] [ 14.867061] Bluetooth: HCI UART protocol Three-wire (H5) registered [ 14.876900] Modules linked in: brcmfmac(+) hci_uart(+) brcmutil btqca bcm2835_v4l2(C) btrtl btbcm btintel bcm2835_mmal_vchiq(C) videobuf2_vmalloc vc4(+) raspberrypi_hwmon cfg80211 cec videobuf2_memops videobuf2_v4l2 drm_cma_helper videobuf2_common bluetooth xhci_pci(+) drm_kms_helper drm dwc2(+) udc_core ecdh_generic snd_soc_core snd_bcm2835(C) i2c_brcmstb roles videodev ecc ac97_bus snd_pcm_dmaengine snd_pcm pwm_bcm2835 mc snd_timer xhci_pci_renesas snd fb_sys_fops syscopyarea sysfillrect crct10dif_ce phy_generic uio_pdrv_genirq sysimgblt uio aes_neon_bs aes_neon_blk [ 14.934380] CPU: 0 PID: 184 Comm: systemd-udevd Tainted: G C 5.18.18-rc1 #1 [ 14.942761] Hardware name: Raspberry Pi 4 Model B (DT) [ 14.947969] pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 14.955031] pc : vc5_hdmi_reset+0x1f4/0x234 [vc4] [ 14.959837] lr : vc5_hdmi_reset+0x38/0x234 [vc4] [ 14.964548] sp : ffff80000a7b3640 [ 14.967902] x29: ffff80000a7b3640 x28: 0000000000000000 x27: ffff000056c35080 [ 14.975140] x26: ffff80000136db78 x25: ffff80000136e078 x24: 0000000000000000 [ 14.976233] Bluetooth: HCI UART protocol Intel registered [ 14.982376] x23: ffff000058479000 x22: ffff0000fb836da0 x21: ffff000056c35c90 [ 14.982383] x20: 0000000000000000 x19: ffff000056c35080 x18: 0000000000000014 [ 14.982389] x17: 00000000f19a3ea9 x16: 00000000b24d2d64 x15: 000000006490e735 [ 14.982396] x14: 0000000000000000 x13: 00000000d43c985e x12: 00000000f1020f23 [ 14.982402] x11: 00000000d1b738e5 x10: ffff8400035fbc7f x9 : ffff800001357768 [ 14.982408] x8 : 0101010101010101 x7 : 0000000000000000 x6 : ffff000055ade180 [ 14.982414] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 [ 14.982420] x2 : 0000000000000001 x1 : 0000000000000002 x0 : ffff80000136f7f0 [ 15.026130] Bluetooth: HCI UART protocol Broadcom registered [ 15.031261] [ 15.031263] Call trace: [ 15.031265] vc5_hdmi_reset+0x1f4/0x234 [vc4] [ 15.041432] Bluetooth: HCI UART protocol QCA registered [ 15.045761] vc4_hdmi_runtime_resume+0x74/0x2d0 [vc4] [ 15.045798] vc4_hdmi_bind+0x244/0xa60 [vc4] [ 15.074641] component_bind_all+0x114/0x26c [ 15.078887] vc4_drm_bind+0x1d8/0x2c0 [vc4] [ 15.083159] try_to_bring_up_aggregate_device+0x200/0x2d4 [ 15.085085] Bluetooth: HCI UART protocol AG6XX registered [ 15.088635] component_master_add_with_match+0xcc/0x110 [ 15.088639] vc4_platform_drm_probe+0xc8/0x100 [vc4] [ 15.104457] platform_probe+0x74/0xd0 [ 15.108169] really_probe+0x180/0x3cc [ 15.111881] __driver_probe_device+0x11c/0x190 [ 15.114311] Bluetooth: HCI UART protocol Marvell registered [ 15.116384] driver_probe_device+0x44/0xf4 [ 15.116390] __driver_attach+0xd8/0x1b0 [ 15.116396] bus_for_each_dev+0x7c/0xe0 [ 15.116401] driver_attach+0x30/0x40 [ 15.116406] bus_add_driver+0x154/0x240 [ 15.116410] driver_register+0x84/0x140 [ 15.116416] __platform_driver_register+0x34/0x40 [ 15.116419] vc4_drm_register+0x60/0x1000 [vc4] [ 15.154701] do_one_initcall+0x50/0x2c0 [ 15.158590] do_init_module+0x50/0x260 [ 15.162391] load_module+0x2298/0x2720 [ 15.166189] __do_sys_finit_module+0xac/0x12c [ 15.170604] __arm64_sys_finit_module+0x2c/0x40 [ 15.175196] invoke_syscall+0x50/0x120 [ 15.178995] el0_svc_common.constprop.0+0x6c/0x1a0 [ 15.183851] do_el0_svc+0x30/0x90 [ 15.187208] el0_svc+0x30/0xd0 [ 15.190301] el0t_64_sync_handler+0x10c/0x140 [ 15.194715] el0t_64_sync+0x1a0/0x1a4 [ 15.198424] ---[ end trace 0000000000000000 ]--- [ 15.203150] ------------[ cut here ]------------ I can see similar trace with hung task of systemd-udevd in v5.15.61-rc1 also, but not the other warning. I am on holiday, might not be able to bisect to find the offending commit. -- Regards Sudip
