On Thu, 1 Apr 2021 21:12:00 +0530, Srikar Dronamraju wrote:
> Geethika reported a trace when doing a dlpar CPU add.
>
> ------------[ cut here ]------------
> WARNING: CPU: 152 PID: 1134 at kernel/sched/topology.c:2057
> CPU: 152 PID: 1134 Comm: kworker/152:1 Not tainted 5.12.0-rc5-master #5
> Workqueue: events cpuset_hotplug_workfn
> NIP: c0000000001cfc14 LR: c0000000001cfc10 CTR: c0000000007e3420
> REGS: c0000034a08eb260 TRAP: 0700 Not tainted (5.12.0-rc5-master+)
> MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 28828422 XER: 00000020
> CFAR: c0000000001fd888 IRQMASK: 0 #012GPR00: c0000000001cfc10
> c0000034a08eb500 c000000001f35400 0000000000000027 #012GPR04:
> c0000035abaa8010 c0000035abb30a00 0000000000000027 c0000035abaa8018
> #012GPR08: 0000000000000023 c0000035abaaef48 00000035aa540000
> c0000035a49dffe8 #012GPR12: 0000000028828424 c0000035bf1a1c80
> 0000000000000497 0000000000000004 #012GPR16: c00000000347a258
> 0000000000000140 c00000000203d468 c000000001a1a490 #012GPR20:
> c000000001f9c160 c0000034adf70920 c0000034aec9fd20 0000000100087bd3
> #012GPR24: 0000000100087bd3 c0000035b3de09f8 0000000000000030
> c0000035b3de09f8 #012GPR28: 0000000000000028 c00000000347a280
> c0000034aefe0b00 c0000000010a2a68
> NIP [c0000000001cfc14] build_sched_domains+0x6a4/0x1500
> LR [c0000000001cfc10] build_sched_domains+0x6a0/0x1500
> Call Trace:
> [c0000034a08eb500] [c0000000001cfc10] build_sched_domains+0x6a0/0x1500
> (unreliable)
> [c0000034a08eb640] [c0000000001d1e6c]
> partition_sched_domains_locked+0x3ec/0x530
> [c0000034a08eb6e0] [c0000000002936d4] rebuild_sched_domains_locked+0x524/0xbf0
> [c0000034a08eb7e0] [c000000000296bb0] rebuild_sched_domains+0x40/0x70
> [c0000034a08eb810] [c000000000296e74] cpuset_hotplug_workfn+0x294/0xe20
> [c0000034a08ebc30] [c000000000178dd0] process_one_work+0x300/0x670
> [c0000034a08ebd10] [c0000000001791b8] worker_thread+0x78/0x520
> [c0000034a08ebda0] [c000000000185090] kthread+0x1a0/0x1b0
> [c0000034a08ebe10] [c00000000000ccec] ret_from_kernel_thread+0x5c/0x70
> Instruction dump:
> 7d2903a6 4e800421 e8410018 7f67db78 7fe6fb78 7f45d378 7f84e378 7c681b78
> 3c62ff1a 3863c6f8 4802dc35 60000000 <0fe00000> 3920fff4 f9210070 e86100a0
> ---[ end trace 532d9066d3d4d7ec ]---
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/smp: Set numa node before updating mask
https://git.kernel.org/powerpc/c/6980d13f0dd189846887bbbfa43793d9a41768d3
cheers
