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Date: Sun, 17 Sep 2017 18:41:00 -0700 From: Florian Fainelli <f.fainelli@...il.com> To: kernel test robot <xiaolong.ye@...el.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, "Luis R. Rodriguez" <mcgrof@...nel.org>, Kees Cook <keescook@...omium.org>, Andrew Morton <akpm@...ux-foundation.org>, LKML <linux-kernel@...r.kernel.org>, lkp@...org Subject: Re: [lkp-robot] [lib] e4dace3615: kernel_BUG_at_arch/x86/mm/physaddr.c Le 09/17/17 à 18:12, kernel test robot a écrit : > > FYI, we noticed the following commit: > > commit: e4dace3615526fd66c86dd535ee4bc9e8c706e37 ("lib: add test module for CONFIG_DEBUG_VIRTUAL") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > in testcase: trinity > with following parameters: > > runtime: 300s > > test-description: Trinity is a linux system call fuzz tester. > test-url: http://codemonkey.org.uk/projects/trinity/ > > > on test machine: qemu-system-i386 -enable-kvm -smp 2 -m 320M > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): The module is doing what it should and makes the tests in CONFIG_DEBUG_VIRTUAL be triggered, I would suggest not inserting that module during your testing. > > > +-------------------------------------------------------------+------------+------------+ > | | 9888a588ea | e4dace3615 | > +-------------------------------------------------------------+------------+------------+ > | boot_successes | 28 | 0 | > | boot_failures | 22 | 10 | > | WARNING:at_arch/x86/mm/tlb.c:#initialize_tlbstate_and_flush | 8 | 8 | > | EIP:initialize_tlbstate_and_flush | 8 | 8 | > | INFO:rcu_sched_self-detected_stall_on_CPU | 14 | | > | EIP:arch_local_irq_enable | 14 | | > | EIP:arch_local_irq_restore | 14 | | > | kernel_BUG_at_arch/x86/mm/physaddr.c | 0 | 10 | > | invalid_opcode:#[##] | 0 | 10 | > | EIP:__phys_addr | 0 | 10 | > | Kernel_panic-not_syncing:Fatal_exception | 0 | 10 | > +-------------------------------------------------------------+------------+------------+ > > > > [ 19.762380] kernel BUG at arch/x86/mm/physaddr.c:75! > [ 19.763384] invalid opcode: 0000 [#1] SMP > [ 19.763982] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 4.13.0-09302-ge4dace3 #1 > [ 19.764094] task: d3094040 task.stack: d3096000 > [ 19.764094] EIP: __phys_addr+0x2d/0x5a > [ 19.764094] EFLAGS: 00210202 CPU: 0 > [ 19.764094] EAX: 00000001 EBX: d47de000 ECX: fffff000 EDX: ff7fe000 > [ 19.764094] ESI: 147de000 EDI: c2661dc5 EBP: d3097f0c ESP: d3097f04 > [ 19.764094] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > [ 19.764094] CR0: 80050033 CR2: 00000000 CR3: 02859000 CR4: 000006b0 > [ 19.764094] Call Trace: > [ 19.764094] test_debug_virtual_init+0x28/0xb1 > [ 19.764094] do_one_initcall+0xa4/0x1ac > [ 19.764094] ? kernel_init_freeable+0xfd/0x1ff > [ 19.764094] kernel_init_freeable+0x12c/0x1ff > [ 19.764094] ? rest_init+0xae/0xae > [ 19.764094] kernel_init+0xd/0xd0 > [ 19.764094] ret_from_fork+0x19/0x30 > [ 19.764094] Code: e5 56 53 e8 b6 6c ff ff 8d b0 00 00 00 40 3d ff ff ff bf 77 02 0f 0b 89 c3 80 3d 08 b9 5d c2 00 74 0b e8 9b ff ff ff 84 c0 74 02 <0f> 0b a1 28 45 1a c3 85 c0 74 1c 89 f2 c1 ea 0c 39 c2 76 02 0f > [ 19.764094] EIP: __phys_addr+0x2d/0x5a SS:ESP: 0068:d3097f04 > [ 19.778781] ---[ end trace 35013a8e82407c24 ]--- > > > To reproduce: > > 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, > Xiaolong > -- Florian
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