linux-kernel - [swiotlb] 461021875c: EIP:__dma_direct_alloc

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Date:   Wed, 8 Sep 2021 16:52:39 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     Claire Chang <tientzu@...omium.org>
Cc:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Christoph Hellwig <hch@....de>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Will Deacon <will@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
        lkp@...el.com
Subject: [swiotlb]  461021875c: EIP:__dma_direct_alloc_pages



Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: 461021875c5057b3a408db0aa91b15119064ffa8 ("swiotlb: Add restricted DMA pool initialization")
https://git.kernel.org/cgit/linux/kernel/git/konrad/swiotlb.git devel/for-linus-5.14


in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):



If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


[  157.633812][    T1] BUG: kernel NULL pointer dereference, address: 00000046
[  157.636589][    T1] #PF: supervisor read access in kernel mode
[  157.637641][    T1] #PF: error_code(0x0000) - not-present page
[  157.637641][    T1] *pde = 00000000
[  157.643000][    T1] Oops: 0000 [#1] SMP
[  157.643000][    T1] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G        W         5.12.0-rc3-00029-g461021875c50 #1
[  157.643000][    T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[  157.650987][    T1] EIP: __dma_direct_alloc_pages+0xee/0x280
[  157.650987][    T1] Code: d2 f6 c1 20 0f 94 c0 0f 95 c2 d3 e0 d3 e2 83 c0 ff 83 d2 ff 39 f0 89 d0 19 f8 0f 92 c0 0f b6 c0 8d 44 40 01 8b 93 c0 02 00 00 <80> 7a 46 00 74 6c 8b 7d ec 89 d8 89 fa e8 c0 34 00 00 89 c6 85 c0
[  157.658987][    T1] EAX: 00000004 EBX: c2713884 ECX: 00000018 EDX: 00000000
[  157.658987][    T1] ESI: ffffffff EDI: 00000000 EBP: c1c43d2c ESP: c1c43d10
[  157.658987][    T1] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010297
[  157.666985][    T1] CR0: 80050033 CR2: 00000046 CR3: 1b1da000 CR4: 000406d0
[  157.666985][    T1] Call Trace:
[  157.666985][    T1]  dma_direct_alloc+0x50/0x180
[  157.674977][    T1]  dma_alloc_attrs+0x69/0xc0
[  157.674977][    T1]  ide_allocate_dma_engine+0x55/0x80
[  157.674977][    T1]  ide_hwif_setup_dma.cold+0x36/0x60
[  157.682988][    T1]  ide_host_register+0x147/0x532
[  157.682988][    T1]  ide_pci_init_two.cold+0x719/0x799
[  157.682988][    T1]  ? _raw_spin_unlock+0x1d/0x40
[  157.682988][    T1]  ? klist_put+0x41/0x80
[  157.682988][    T1]  ? pci_do_find_bus+0x60/0x60
[  157.682988][    T1]  ? klist_iter_exit+0x14/0x20
[  157.682988][    T1]  ? bus_find_device+0x80/0xc0
[  157.682988][    T1]  ? put_device+0x11/0x20
[  157.682988][    T1]  ? pci_dev_put+0x16/0x40
[  157.682988][    T1]  ? pci_get_dev_by_id+0x42/0x60
[  157.682988][    T1]  ? pci_get_device+0x4f/0x80
[  157.682988][    T1]  ide_pci_init_one+0x12/0x20
[  157.682988][    T1]  piix_init_one+0x1b/0x20
[  157.682988][    T1]  ide_scan_pcibus+0x5c/0xd2
[  157.682988][    T1]  ? generic_ide_init+0x1b/0x1b
[  157.682988][    T1]  do_one_initcall+0x60/0x320
[  157.682988][    T1]  ? rcu_read_lock_sched_held+0x47/0x80
[  157.682988][    T1]  ? trace_initcall_level+0x84/0xac
[  157.682988][    T1]  kernel_init_freeable+0x212/0x261
[  157.682988][    T1]  ? rest_init+0x22d/0x22d
[  157.682988][    T1]  kernel_init+0xd/0xf3
[  157.682988][    T1]  ret_from_fork+0x1c/0x28
[  157.682988][    T1] Modules linked in:
[  157.682988][    T1] CR2: 0000000000000046
[  157.682988][    T1] ---[ end trace a57246a3e68835a8 ]---
[  157.682988][    T1] EIP: __dma_direct_alloc_pages+0xee/0x280
[  157.682988][    T1] Code: d2 f6 c1 20 0f 94 c0 0f 95 c2 d3 e0 d3 e2 83 c0 ff 83 d2 ff 39 f0 89 d0 19 f8 0f 92 c0 0f b6 c0 8d 44 40 01 8b 93 c0 02 00 00 <80> 7a 46 00 74 6c 8b 7d ec 89 d8 89 fa e8 c0 34 00 00 89 c6 85 c0
[  157.682988][    T1] EAX: 00000004 EBX: c2713884 ECX: 00000018 EDX: 00000000
[  157.682988][    T1] ESI: ffffffff EDI: 00000000 EBP: c1c43d2c ESP: c1c43d10
[  157.682988][    T1] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010297
[  157.682988][    T1] CR0: 80050033 CR2: 00000046 CR3: 1b1da000 CR4: 000406d0
[  157.682988][    T1] Kernel panic - not syncing: Fatal exception
[  157.682988][    T1] Kernel Offset: disabled



To reproduce:

        # build kernel
	cd linux
	cp config-5.12.0-rc3-00029-g461021875c50 .config
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang


View attachment "config-5.12.0-rc3-00029-g461021875c50" of type "text/plain" (267830 bytes)

View attachment "job-script" of type "text/plain" (4419 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (21136 bytes)