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Message-ID: <20141117061303.GC3938@yliu-dev.sh.intel.com>
Date: Mon, 17 Nov 2014 14:13:03 +0800
From: Yuanhan Liu <yuanhan.liu@...ux.intel.com>
To: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: LKML <linux-kernel@...r.kernel.org>, lkp@...org,
Yuanhan Liu <yuanhan.liu@...ux.intel.com>
Subject: [LKP] [x86, PCI, MSI] BUG: unable to handle kernel NULL pointer
dereference at 0000000000000002
FYI, we noticed the below changes on
https://github.com/jiangliu/linux.git irqdomain/p2v7
commit 515b463a5a4c2bac0593c6d88a475a32d65f4bcc ("x86, PCI, MSI: Use hierarchy irqdomain to manage MSI interrupts")
+------------------------------------------+------------+------------+
| | dadb7cd295 | 515b463a5a |
+------------------------------------------+------------+------------+
| boot_successes | 6 | 1 |
| early-boot-hang | 1 | |
| boot_failures | 0 | 4 |
| BUG:unable_to_handle_kernel | 0 | 4 |
| Oops | 0 | 4 |
| RIP:init_irq_alloc_info | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 4 |
| backtrace:init_irq_alloc_info | 0 | 4 |
| backtrace:vp_find_vqs | 0 | 4 |
| backtrace:init_vq | 0 | 4 |
| backtrace:init | 0 | 4 |
| backtrace:kernel_init_freeable | 0 | 4 |
+------------------------------------------+------------+------------+
[ 20.962013] BUG: unable to handle kernel NULL pointer dereference at 0000000000000002
[ 20.964023] IP: [<ffffffff81074795>] init_irq_alloc_info+0x13/0x1b
[ 20.964023] PGD 0
[ 20.964023] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
[ 20.964023] Modules linked in:
[ 20.964023] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc4-g4ae16b6 #1457
[ 20.964023] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.964023] task: ffff8801289c0010 ti: ffff8801289c4000 task.ti: ffff8801289c4000
[ 20.964023] RIP: 0010:[<ffffffff81074795>] [<ffffffff81074795>] init_irq_alloc_info+0x13/0x1b
[ 20.964023] RSP: 0000:ffff8801289c7928 EFLAGS: 00010246
[ 20.964023] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 000000000000000a
[ 20.964023] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000002
[ 20.964023] RBP: ffff8801289c7928 R08: 0000000000000008 R09: 0000000000000000
[ 20.964023] R10: ffff8800b8399f80 R11: 0000000000000023 R12: ffff8800db055000
[ 20.964023] R13: ffff8800d1ee8f98 R14: ffff880129cc3f80 R15: ffffffff83e36800
[ 20.964023] FS: 0000000000000000(0000) GS:ffff88012a200000(0000) knlGS:0000000000000000
[ 20.964023] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 20.964023] CR2: 0000000000000002 CR3: 0000000003e1a000 CR4: 00000000000006f0
[ 20.964023] Stack:
[ 20.964023] ffff8801289c7958 ffffffff810770be ffff8801289c7980 0000000000000002
[ 20.964023] ffffffff83e36840 ffff8800db055098 ffff8801289c79d8 ffffffff8110fd29
[ 20.964023] 0000000000000000 0000000000000000 ffff8800db055000 0000000000000011
[ 20.964023] Call Trace:
[ 20.964023] [<ffffffff810770be>] pci_msi_prepare+0x2d/0x54
[ 20.964023] [<ffffffff8110fd29>] msi_domain_alloc_irqs+0x4a/0x162
[ 20.964023] [<ffffffff8285063a>] ? dmar_find_matched_drhd_unit+0xf7/0x10b
[ 20.964023] [<ffffffff8177e2ee>] pci_msi_domain_alloc_irqs+0x15/0x17
[ 20.964023] [<ffffffff8107727c>] native_setup_msi_irqs+0x61/0x6c
[ 20.964023] [<ffffffff8104f786>] arch_setup_msi_irqs+0xf/0x11
[ 20.964023] [<ffffffff8177d3e0>] pci_msi_setup_msi_irqs+0x45/0x4c
[ 20.964023] [<ffffffff8177daf7>] pci_enable_msix+0x1d8/0x2d0
[ 20.964023] [<ffffffff8177dc20>] pci_enable_msix_range+0x31/0x50
[ 20.964023] [<ffffffff8185dfa6>] vp_request_msix_vectors+0xb6/0x1f8
[ 20.964023] [<ffffffff8185e196>] vp_try_to_find_vqs+0xae/0x43e
[ 20.964023] [<ffffffff8172fbc5>] ? vsnprintf+0x374/0x3ad
[ 20.964023] [<ffffffff8185e558>] vp_find_vqs+0x32/0x8d
[ 20.964023] [<ffffffff81b416aa>] init_vq+0x14f/0x1f8
[ 20.964023] [<ffffffff81b41896>] virtblk_probe+0xf3/0x501
[ 20.964023] [<ffffffff81238727>] ? sysfs_do_create_link_sd+0x78/0xa8
[ 20.964023] [<ffffffff8185dba0>] ? vp_set_status+0x25/0x27
[ 20.964023] [<ffffffff8185c2ec>] virtio_dev_probe+0xbd/0x104
[ 20.964023] [<ffffffff81b09a19>] driver_probe_device+0xb0/0x1d7
[ 20.964023] [<ffffffff81b09bdf>] __driver_attach+0x62/0x85
[ 20.964023] [<ffffffff81b09b7d>] ? __device_attach+0x3d/0x3d
[ 20.964023] [<ffffffff81b08009>] bus_for_each_dev+0x6f/0x89
[ 20.964023] [<ffffffff81b0957d>] driver_attach+0x1e/0x20
[ 20.964023] [<ffffffff81b09229>] bus_add_driver+0x110/0x1cf
[ 20.964023] [<ffffffff84452673>] ? nbd_init+0x39c/0x39c
[ 20.964023] [<ffffffff81b0a235>] driver_register+0x8f/0xcc
[ 20.964023] [<ffffffff84452673>] ? nbd_init+0x39c/0x39c
[ 20.964023] [<ffffffff8185c5fd>] register_virtio_driver+0x2b/0x2d
[ 20.964023] [<ffffffff844526d0>] init+0x5d/0x8b
[ 20.964023] [<ffffffff8100216d>] do_one_initcall+0xee/0x17e
[ 20.964023] [<ffffffff843e60ef>] kernel_init_freeable+0x1ec/0x274
[ 20.964023] [<ffffffff82d3c238>] ? rest_init+0xcc/0xcc
[ 20.964023] [<ffffffff82d3c246>] kernel_init+0xe/0xdf
[ 20.964023] [<ffffffff82d719fc>] ret_from_fork+0x7c/0xb0
[ 20.964023] [<ffffffff82d3c238>] ? rest_init+0xcc/0xcc
[ 20.964023] Code: eb 05 bb da ff ff ff 48 83 c4 28 89 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 fa b9 0a 00 00 00 31 c0 48 89 e5 <f3> ab 5d 48 89 72 08 c3 0f 1f 44 00 00 55 48 85 f6 b9 0a 00 00
[ 20.964023] RIP [<ffffffff81074795>] init_irq_alloc_info+0x13/0x1b
[ 20.964023] RSP <ffff8801289c7928>
[ 20.964023] CR2: 0000000000000002
[ 20.964023] ---[ end trace 21200aca189fb8f5 ]---
[ 20.964023] Kernel panic - not syncing: Fatal exception
[ 20.964023] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
--yliu
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