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Date: Sun, 3 Jan 2021 21:50:13 +0800 From: kernel test robot <oliver.sang@...el.com> To: Thomas Gleixner <tglx@...utronix.de> Cc: Peter Zijlstra <peterz@...radead.org>, LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org, lkp@...el.com Subject: [x86] 14df326702: BUG:unable_to_handle_page_fault_for_address Greeting, FYI, we noticed the following commit (built with gcc-9): commit: 14df32670291588036a498051a54cd8462d7f611 ("x86: Support kmap_local() forced debugging") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: boot on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +---------------------------------------------+------------+------------+ | | 0e91a0c698 | 14df326702 | +---------------------------------------------+------------+------------+ | boot_successes | 12 | 0 | | boot_failures | 1 | 18 | | BUG:kernel_hang_in_boot_stage | 1 | | | BUG:unable_to_handle_page_fault_for_address | 0 | 18 | | Oops:#[##] | 0 | 18 | | EIP:ioread32_rep | 0 | 18 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 18 | +---------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <oliver.sang@...el.com> [ 10.551574] BUG: unable to handle page fault for address: fffbb000 [ 10.552286] #PF: supervisor write access in kernel mode [ 10.552286] #PF: error_code(0x0002) - not-present page [ 10.552286] *pde = 07ae4067 *pte = 00000000 [ 10.552286] Oops: 0002 [#1] SMP [ 10.552286] CPU: 0 PID: 12 Comm: kworker/0:1 Tainted: G S 5.10.0-rc2-00078-g14df32670291 #2 [ 10.552286] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 10.552286] Workqueue: ata_sff ata_sff_pio_task [ 10.552286] EIP: ioread32_rep+0x3a/0x80 [ 10.552286] Code: 78 15 8d b6 00 00 00 00 8b 10 83 e9 01 89 17 83 c7 04 83 f9 ff 75 f1 8b 7d fc c9 c3 8d 74 26 00 3d 00 00 01 00 76 11 0f b7 d0 <f3> 6d 8b 7d fc c9 c3 8d b4 26 00 00 00 00 8b 15 00 57 be c6 85 d2 [ 10.552286] EAX: 00010170 EBX: 00000200 ECX: 00000080 EDX: 00000170 [ 10.552286] ESI: fffbae80 EDI: fffbae80 EBP: c130be74 ESP: c130be70 [ 10.552286] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010002 [ 10.552286] CR0: 80050033 CR2: fffbb000 CR3: 06e92000 CR4: 000406d0 [ 10.552286] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 [ 10.552286] DR6: fffe0ff0 DR7: 00000400 [ 10.552286] Call Trace: [ 10.552286] ata_sff_data_xfer32+0x75/0x140 [ 10.552286] ? __kmap_local_pfn_prot+0xf/0xb0 [ 10.552286] ata_pio_sector+0xa8/0x140 [ 10.552286] ata_pio_sectors+0x77/0x90 [ 10.552286] ata_sff_hsm_move+0xba/0x700 [ 10.552286] ? process_one_work+0x172/0x4e0 [ 10.552286] ata_sff_pio_task+0x9e/0x190 [ 10.552286] process_one_work+0x1ec/0x4e0 [ 10.552286] worker_thread+0x15e/0x3c0 [ 10.552286] kthread+0xee/0x120 [ 10.552286] ? process_one_work+0x4e0/0x4e0 [ 10.552286] ? kthread_delayed_work_timer_fn+0xa0/0xa0 [ 10.552286] ret_from_fork+0x19/0x24 [ 10.552286] Modules linked in: [ 10.552286] CR2: 00000000fffbb000 [ 10.552286] ---[ end trace 17dcbc9e82836976 ]--- To reproduce: # build kernel cd linux cp config-5.10.0-rc2-00078-g14df32670291 .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 Thanks, Oliver Sang View attachment "config-5.10.0-rc2-00078-g14df32670291" of type "text/plain" (130708 bytes) View attachment "job-script" of type "text/plain" (4416 bytes) Download attachment "dmesg.xz" of type "application/x-xz" (12512 bytes)
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