Boot crash due to "x86/msi: Consolidate MSI allocation"

[Zi Yan <ziy@xxxxxxxxxx>]

Hi Thomas,

I am running linux-next on my Dell R630 and the system crashed at boot time. I 
bisected linux-next and
got to your commit:

commit 3b9c1d377d67072d1d8a2373b4969103cca00dab
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Date:   Wed Aug 26 13:16:46 2020 +0200

    x86/msi: Consolidate MSI allocation

    Convert the interrupt remap drivers to retrieve the pci device from the msi
    descriptor and use info::hwirq.

    This is the first step to prepare x86 for using the generic MSI domain ops.

    Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    Acked-by: Wei Liu <wei.liu@xxxxxxxxxx>
    Acked-by: Joerg Roedel <jroedel@xxxxxxx>
    Link: https://lore.kernel.org/r/20200826112332.466405395@xxxxxxxxxxxxx

The crash log is below and my .config is attached.

[   11.742181] RAPL PMU: hw unit of domain dram 2^-16 Joules
[   11.768742] check: Scanning for low memory corruption every 60 seconds
[   11.781653] Initialise system trusted keyrings
[   11.786858] workingset: timestamp_bits=40 max_order=26 bucket_order=0
[   11.800237] zbud: loaded
[   11.807003] fuse: init (API version 7.31)
[   11.812713] Key type asymmetric registered
[   11.817286] Asymmetric key parser 'x509' registered
[   11.822750] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 
247)
[   11.831235] io scheduler mq-deadline registered
[   11.837559] BUG: kernel NULL pointer dereference, address: 0000000000000018
[   11.840905] #PF: supervisor read access in kernel mode
[   11.840905] #PF: error_code(0x0000) - not-present page
[   11.840905] PGD 0 P4D 0
[   11.840905] Oops: 0000 [#1] SMP PTI
[   11.840905] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.9.0-rc5-1gb-thp+ 
#57
[   11.840905] Hardware name: Dell Inc. PowerEdge R630/02C2CP, BIOS 2.11.0 
11/02/2019
[   11.840905] Workqueue: events work_for_cpu_fn
[   11.840905] RIP: 0010:msi_desc_to_pci_dev+0x5/0x10
[   11.840905] Code: c7 98 79 35 a3 e8 89 89 b5 ff e9 bb eb ff ff cc cc cc cc 
cc cc 0f 1f 44 00 00 8b 05 65 c3 14 01 c3 0f 1f 40 00 0f 1f 44 00 00 <48> 8b 47 
18 48 2d b0 00 00 00 c3 0f 1f 44 00 00 48 8b 47 18 48 8b
[   11.840905] RSP: 0000:ffffbd1bc00cfc88 EFLAGS: 00010297
[   11.840905] RAX: 0000000000000000 RBX: ffff972073e10000 RCX: 0000000000000000
[   11.840905] RDX: ffffbd1bc00cfc98 RSI: 0000000000000000 RDI: 0000000000000000
[   11.840905] RBP: ffff9720778d7080 R08: ffff972073e10338 R09: ffff972073e10338
[   11.840905] R10: 000000000000000d R11: 0000000000000000 R12: 0000000000000002
[   11.840905] R13: 0000000000000000 R14: ffff972073e100b0 R15: ffff972073e10000
[   11.840905] FS:  0000000000000000(0000) GS:ffff97207f800000(0000) 
knlGS:0000000000000000
[   11.840905] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.840905] CR2: 0000000000000018 CR3: 0000001989612001 CR4: 00000000003706f0
[   11.840905] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.840905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.840905] Call Trace:
[   11.840905]  intel_get_irq_domain+0x24/0xb0
[   11.840905]  native_setup_msi_irqs+0x3b/0x90
[   11.840905]  __pci_enable_msi_range+0x314/0x500
[   11.840905]  pci_alloc_irq_vectors_affinity+0xd2/0x130
[   11.840905]  pcie_port_device_register+0x135/0x550
[   11.840905]  ? dequeue_entity+0xa4/0x430
[   11.840905]  ? newidle_balance+0x265/0x3e0
[   11.840905]  pcie_portdrv_probe+0x2d/0xb0
[   11.840905]  local_pci_probe+0x42/0x80
[   11.840905]  ? __schedule+0x29d/0x8b0
[   11.840905]  work_for_cpu_fn+0x16/0x20
[   11.840905]  process_one_work+0x1ab/0x3a0
[   11.840905]  worker_thread+0x1df/0x3c0
[   11.840905]  ? rescuer_thread+0x3b0/0x3b0
[   11.840905]  kthread+0x134/0x150
[   11.840905]  ? __kthread_bind_mask+0x60/0x60
[   11.840905]  ret_from_fork+0x22/0x30
[   11.840905] Modules linked in:
[   11.840905] CR2: 0000000000000018
[   11.840905] ---[ end trace d9574f52cc5ec884 ]---
[   11.840905] RIP: 0010:msi_desc_to_pci_dev+0x5/0x10
[   11.840905] Code: c7 98 79 35 a3 e8 89 89 b5 ff e9 bb eb ff ff cc cc cc cc 
cc cc 0f 1f 44 00 00 8b 05 65 c3 14 01 c3 0f 1f 40 00 0f 1f 44 00 00 <48> 8b 47 
18 48 2d b0 00 00 00 c3 0f 1f 44 00 00 48 8b 47 18 48 8b
[   11.840905] RSP: 0000:ffffbd1bc00cfc88 EFLAGS: 00010297
[   11.840905] RAX: 0000000000000000 RBX: ffff972073e10000 RCX: 0000000000000000
[   11.840905] RDX: ffffbd1bc00cfc98 RSI: 0000000000000000 RDI: 0000000000000000
[   11.840905] RBP: ffff9720778d7080 R08: ffff972073e10338 R09: ffff972073e10338
[   11.840905] R10: 000000000000000d R11: 0000000000000000 R12: 0000000000000002
[   11.840905] R13: 0000000000000000 R14: ffff972073e100b0 R15: ffff972073e10000
[   11.840905] FS:  0000000000000000(0000) GS:ffff97207f800000(0000) 
knlGS:0000000000000000
[   11.840905] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.840905] CR2: 0000000000000018 CR3: 0000001989612001 CR4: 00000000003706f0
[   11.840905] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.840905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.840905] Kernel panic - not syncing: Fatal exception
[   11.840905] Kernel Offset: 0x21000000 from 0xffffffff81000000 (relocation 
range: 0xffffffff80000000-0xffffffffbfffffff)
[   11.840905] ---[ end Kernel panic - not syncing: Fatal exception ]---


—
Best Regards,
Yan Zi

Attachment: .config
Description: Text document

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