On Tue, 13 Oct 2020 at 11:09, Naresh Kamboju naresh.kamboju@linaro.org wrote:
On stable rc 5.8.15 the following kernel warning was noticed once while boot and this is hard to reproduce.
This is now reproduciable on arm64 NXP ls2088 device
[ 19.980839] ------------[ cut here ]------------ [ 19.985468] WARNING: CPU: 1 PID: 441 at kernel/irq/chip.c:242 __irq_startup+0x9c/0xa8 [ 19.985472] Modules linked in: rfkill lm90 ina2xx crct10dif_ce qoriq_thermal fuse [ 20.000773] CPU: 1 PID: 441 Comm: (agetty) Not tainted 5.4.78-rc1 #2 [ 20.000775] Hardware name: Freescale Layerscape 2088A RDB Board (DT) [ 20.000779] pstate: 60000085 (nZCv daIf -PAN -UAO) [ 20.018253] pc : __irq_startup+0x9c/0xa8 [ 20.018256] lr : irq_startup+0x64/0x130 [ 20.018259] sp : ffff80001122f8e0 [ 20.029303] x29: ffff80001122f8e0 x28: ffff0082c242d400 [ 20.029306] x27: ffffdd0f47234768 x26: 0000000000020902 [ 20.029309] x25: ffffdd0f461a6f10 x24: ffffdd0f461a6bc8 [ 20.029311] x23: 0000000000000000 x22: 0000000000000001 [ 20.029314] x21: 0000000000000001 x20: ffff0082c22f8780 [ 20.029316] x19: ffff0082c1060800 x18: 0000000000000001 [ 20.029318] x17: 0000000000000000 x16: ffff8000114a0000 [ 20.029321] x15: 0000000000000000 x14: ffff0082c0e92f90 [ 20.071738] x13: ffff0082c0e93080 x12: ffff800011460000 [ 20.071741] x11: dead000000000100 x10: 0000000000000040 [ 20.071743] x9 : ffffdd0f47093ba8 x8 : ffffdd0f47093ba0 [ 20.087653] x7 : ffff0082a00002b0 x6 : ffffdd0f47074958 [ 20.087655] x5 : ffffdd0f47074000 x4 : ffff800011230000 [ 20.087657] x3 : 0000000000000504 x2 : 0000000000000001 [ 20.103567] x1 : 0000000003032004 x0 : ffff0082c1060858 [ 20.103570] Call trace: [ 20.103573] __irq_startup+0x9c/0xa8 [ 20.103577] irq_startup+0x64/0x130 [ 20.118359] __enable_irq+0x7c/0x88 [ 20.118362] enable_irq+0x54/0xa8 [ 20.118367] serial8250_do_startup+0x658/0x718 [ 20.118371] serial8250_startup+0x38/0x48 [ 20.133589] uart_startup.part.0+0x12c/0x2b8 [ 20.133592] uart_port_activate+0x64/0x98 [ 20.133595] tty_port_open+0x94/0x200 [ 20.133599] uart_open+0x2c/0x40 [ 20.148730] tty_open+0x108/0x438 [ 20.148734] chrdev_open+0xa8/0x1a0 [ 20.148737] do_dentry_open+0x118/0x3b8 [ 20.159348] vfs_open+0x38/0x48 [ 20.159350] path_openat+0x4c8/0x1290 [ 20.159353] do_filp_open+0x84/0x108 [ 20.159357] do_sys_open+0x180/0x228 [ 20.173271] __arm64_sys_openat+0x2c/0x38 [ 20.173274] el0_svc_handler+0x88/0x1c8 [ 20.173278] el0_svc+0x8/0x1bc [ 20.184148] ---[ end trace 736144791ac25035 ]---
ref: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.4.y/build/v5.4.77...