Re: [BUG] powerpc/pseries: WARN in __replay_soft_interrupts() during SMP bringup on Power11 (7.2.0-rc5)

[Shrikanth Hegde <sshegde@linux.ibm.com>]

hi venkat,

On 8/4/26 11:39 AM, Venkat Rao Bagalkote wrote:
> Greetings!!
> 
> 
> I'm seeing a reproducible warning during early boot on a Power11 pSeries 
> LPAR with Linux 7.2.0-rc5.
> 
> The kernel starts booting normally and reaches SMP initialization, but 
> then begins emitting continuous warnings from 
> __replay_soft_interrupts().The warnings continue indefinitely and the 
> system never completes boot.
> 

Can you try bisecting it?

> 
> Call Trace:
> 
> 
> [ 2513.069347] WARNING: arch/powerpc/kernel/irq_64.c:75 at 
> __replay_soft_interrupts+0x14c/0x220, CPU#0: swapper/0/0
> [ 2513.069354] Modules linked in: bonding tls nft_fib_inet nft_fib_ipv4 
> nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 
> nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 
> nf_defrag_ipv4 nf_tables rfkill sg pseries_rng vmx_crypto fuse loop 
> vsock_loopback vmw_vsock_virtio_transport_common vsock xfs sd_mod 
> ibmvscsi ibmveth scsi_transport_srp dm_mirror dm_region_hash dm_log dm_mod
> [ 2513.069380] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G     W     
>     7.2.0-rc5 #2 PREEMPTLAZY
> [ 2513.069385] Tainted: [W]=WARN
> [ 2513.069386] Hardware name: IBM,9080-HEX Power11 (architected) 
> 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries
> [ 2513.069390] NIP:  c00000000003b2dc LR: c00000000003b2b8 CTR: 
> c000000000190af0
> [ 2513.069393] REGS: c000000002d074d0 TRAP: 0700   Tainted: G   W     
> (7.2.0-rc5)
> [ 2513.069397] MSR:  8000000000021033 <SF,ME,IR,DR,RI,LE> CR: 84002288 
> XER: 00000001
> [ 2513.069404] CFAR: c0000000000189cc IRQMASK: 1
> [ 2513.069404] GPR00: c00000000003b2b8 c000000002d07790 c000000001938100 
> c000000002d077b8
> [ 2513.069404] GPR04: 0000000000000001 0000000000000001 0000000000000004 
> 0000000ef44c0000
> [ 2513.069404] GPR08: 0000000000000001 0000000000000041 0000000000000001 
> 0000000000002000
> [ 2513.069404] GPR12: c000000000190af0 c000000003030000 0000000000000000 
> 0000000000000000
> [ 2513.069404] GPR16: 0000000000000000 0000000000000000 0000000000000000 
> 0000000000000000
> [ 2513.069404] GPR20: 0000000000000000 0000000000000000 0000000000000000 
> 0000000000000000
> [ 2513.069404] GPR24: 0000000000000000 0000000000000000 0000000000000000 
> 0000000000000000
> [ 2513.069404] GPR28: 0000000000000000 fcffffffffffffff 0000000000000000 
> c000000002d079f0
> [ 2513.069440] NIP [c00000000003b2dc] __replay_soft_interrupts+0x14c/0x220
> [ 2513.069445] LR [c00000000003b2b8] __replay_soft_interrupts+0x128/0x220
> [ 2513.069449] Call Trace:
> [ 2513.069451] [c000000002d07790] [c00000000003b2b8] 
> __replay_soft_interrupts+0x128/0x220 (unreliable)
> [ 2513.069456] [c000000002d07960] [c00000000003b6e4] 
> replay_soft_interrupts+0x24/0x40
> [ 2513.069462] [c000000002d07980] [c0000000000338f0] 
> interrupt_exit_kernel_prepare+0x250/0x280
> [ 2513.069467] [c000000002d079c0] [c00000000000da68] 
> interrupt_return_srr_kernel+0x8/0x18c
> [ 2513.069472] ---- interrupt: 900 at plpar_hcall_norets_notrace+0x18/0x2c
> [ 2513.069477] NIP:  c0000000001bdb68 LR: c000000001318c98 CTR: 
> 0000000000000000
> [ 2513.069480] REGS: c000000002d079f0 TRAP: 0900   Tainted: G   W     
> (7.2.0-rc5)
> [ 2513.069483] MSR:  800000000280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> 
> CR: 24000282  XER: 00000001
> [ 2513.069492] CFAR: 0000000000000000 IRQMASK: 0
> [ 2513.069492] GPR00: 0000000000000000 c000000002d07cb0 c000000001938100 
> 0000000000000000
> [ 2513.069492] GPR04: 0000000000000000 8004000038667c10 0000000000000000 
> 0000000000000001
> [ 2513.069492] GPR08: 0000000000000000 0000000000000000 0000000000000090 
> 0000000000000001
> [ 2513.069492] GPR12: 8004000038667c00 c000000003030000 0000000000000000 
> 0000000000000000
> [ 2513.069492] GPR16: 0000000000000000 0000000000000000 0000000000000000 
> 0000000000000000
> [ 2513.069492] GPR20: 0000000000c00000 0000000000000008 0000000000000000 
> 0000000000000000
> [ 2513.069492] GPR24: 0000000000000000 0000000000000000 000002491e026596 
> 0000000000000000
> [ 2513.069492] GPR28: 0000000000000000 0000000000000001 c0000000022918e8 
> c0000000022918f0
> [ 2513.069527] NIP [c0000000001bdb68] plpar_hcall_norets_notrace+0x18/0x2c
> [ 2513.069531] LR [c000000001318c98] check_and_cede_processor+0x48/0x60
> [ 2513.069535] ---- interrupt: 900
> [ 2513.069537] [c000000002d07cb0] [c000000002d07d00] 
> init_stack+0x7d00/0x8000 (unreliable)
> [ 2513.069543] [c000000002d07d10] [c000000001319124] 
> dedicated_cede_loop+0x94/0x19c
> [ 2513.069547] [c000000002d07d60] [c000000001318300] 
> cpuidle_enter_state+0x2f0/0x738
> [ 2513.069551] [c000000002d07e00] [c000000000e6eea0] 
> cpuidle_enter+0x50/0x80
> [ 2513.069556] [c000000002d07e40] [c0000000002c1978] call_cpuidle+0x48/0x90
> [ 2513.069560] [c000000002d07e60] [c0000000002ca1b0] 
> cpuidle_idle_call+0x160/0x2e0
> [ 2513.069565] [c000000002d07eb0] [c0000000002ca434] do_idle+0x104/0x200
> [ 2513.069569] [c000000002d07ef0] [c0000000002ca7e8] 
> cpu_startup_entry+0x48/0x50
> [ 2513.069574] [c000000002d07f20] [c000000000011764] rest_init+0x114/0x118
> [ 2513.069578] [c000000002d07f50] [c0000000020052a8] do_initcalls+0x0/0x18c
> [ 2513.069582] [c000000002d07fe0] [c00000000000ea9c] 
> start_here_common+0x1c/0x20
> [ 2513.069585] Code: 992d0933 f9010168 4bfdd665 60000000 892d0933 
> 7d2a48f8 554a07fe 0b0a0000 890d0932 39400001 2c280003 7d40509e 
> <0b0a0000> 712a0002 41820044 552907fa
> [ 2513.069598] ---[ end trace 0000000000000000 ]---
> [ 2513.099343] ------------[ cut here ]------------
> 
> This I am seeing this issue with attached .config.
> 
> 

I don't see GENERIC_ENTRY in your config. So it maybe a older bug
seen with CONFIG_PPC_IRQ_SOFT_MASK_DEBUG.