Hi xiaolong, Sorry for the late reply.
I think I should need to explain for this. Firstly, please ignore this bug. Because, this patch has be discarded. The work of this patch has already in the upstream(f3bf1dbe64). Secondly, I think the cause of the bug is: I use the "-EINVAL" incorrectly. Thanks, Dou. This patch is repeated with him At 10/11/2016 10:15 AM, kernel test robot wrote:
FYI, we noticed the following commit: https://github.com/0day-ci/linux Dou-Liyang/Fix-the-local-APIC-id-validation-in-case-of-0xff/20161008-154907 commit 04c197c080f2ed7a022f79701455c6837f4b9573 ("x86/acpi: Fix the local APIC id validation in case of 0xff") in testcase: will-it-scale with following parameters: test: unlink2 cpufreq_governor: performance Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. on test machine: 72 threads Intel(R) Xeon(R) CPU E5-2699 v3 @ 2.30GHz with 128G memory caused below changes: +-------------------------------------------------------+------------+------------+ | | 1e1a4b0f54 | 04c197c080 | +-------------------------------------------------------+------------+------------+ | boot_successes | 2 | 4 | | boot_failures | 0 | 7 | | BUG:unable_to_handle_kernel | 0 | 3 | | Oops | 0 | 3 | | RIP:check_timer | 0 | 3 | | calltrace:native_smp_prepare_cpus | 0 | 3 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 3 | | PANIC:double_fault | 0 | 2 | | Bad_pagetable | 0 | 1 | | RIP:copy_user_enhanced_fast_string | 0 | 1 | | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 1 | | Kernel_panic-not_syncing:Machine_halted | 0 | 1 | | RIP:vgacon_scroll | 0 | 1 | | invoked_oom-killer:gfp_mask=0x | 0 | 4 | | Mem-Info | 0 | 4 | +-------------------------------------------------------+------------+------------+ [ 0.492621] ..MP-BIOS bug: 8254 timer not connected to IO-APIC [ 0.499130] ...trying to set up timer (IRQ0) through the 8259A ... [ 0.506027] ..... (found apic 2 pin 0) ... [ 0.510601] BUG: unable to handle kernel paging request at 0000003000000010 [ 0.518391] IP: [<ffffffff8200964b>] check_timer+0x21d/0x61e [ 0.524722] PGD 0 [ 0.526974] Oops: 0000 [#1] SMP [ 0.530477] Modules linked in: [ 0.533901] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-00989-g04c197c #1 [ 0.541865] Hardware name: Intel Corporation S2600WTT/S2600WTT, BIOS SE5C610.86B.01.01.0008.021120151325 02/11/2015 [ 0.553521] task: ffff882023b00000 task.stack: ffffc9000c468000 [ 0.560129] RIP: 0010:[<ffffffff8200964b>] [<ffffffff8200964b>] check_timer+0x21d/0x61e [ 0.569170] RSP: 0000:ffffc9000c46bd90 EFLAGS: 00010082 [ 0.575095] RAX: 0000003000000000 RBX: 0000000000000000 RCX: ffffffff81e5cb48 [ 0.583058] RDX: 0000000000000001 RSI: 0000000000000046 RDI: 0000000000000046 [ 0.591031] RBP: ffffc9000c46be08 R08: 0000000000000000 R09: 0000000000000000 [ 0.598994] R10: 0000000000000040 R11: 0000000000000208 R12: 0000000000000002 [ 0.606957] R13: 0000000000000002 R14: 0000000000000002 R15: ffff88103f00ae20 [ 0.614927] FS: 0000000000000000(0000) GS:ffff88103f400000(0000) knlGS:0000000000000000 [ 0.623958] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.630368] CR2: 0000003000000010 CR3: 000000207ee06000 CR4: 00000000001406f0 [ 0.638331] Stack: [ 0.640574] 0000000000000000 0000000000000246 ffffffff00000000 ffff88103f002080 [ 0.648870] ffff88103f002080 0000000000000017 0000000000000001 ffffc9000c46bdd8 [ 0.657165] ffffffff8145869d ffffc9000c46bde8 0000000000000718 0000000000000001 [ 0.665459] Call Trace: [ 0.668193] [<ffffffff8145869d>] ? radix_tree_lookup+0xd/0x10 [ 0.674710] [<ffffffff8200a1a9>] setup_IO_APIC+0x17d/0x1c5 [ 0.680937] [<ffffffff8200885c>] apic_bsp_setup+0xa1/0xac [ 0.687059] [<ffffffff820064b5>] native_smp_prepare_cpus+0x297/0x317 [ 0.694259] [<ffffffff81ff1038>] kernel_init_freeable+0xcf/0x225 [ 0.701072] [<ffffffff81929710>] ? rest_init+0x90/0x90 [ 0.706911] [<ffffffff8192971e>] kernel_init+0xe/0x100 [ 0.712744] [<ffffffff81936fc5>] ret_from_fork+0x25/0x30 [ 0.718776] Code: ff 48 c7 c7 50 6d c9 81 e8 31 54 17 ff 89 da 44 89 ee 48 c7 c7 90 6d c9 81 e8 20 54 17 ff 48 8b 45 a8 48 8b 00 48 39 45 a8 74 1a <44> 39 70 10 75 0f 44 39 60 14 75 09 44 89 68 10 89 58 14 eb 26 [ 0.740436] RIP [<ffffffff8200964b>] check_timer+0x21d/0x61e [ 0.746858] RSP <ffffc9000c46bd90> [ 0.750749] CR2: 0000003000000010 [ 0.754461] ---[ end trace 3618134a8804dce5 ]--- [ 0.759620] Kernel panic - not syncing: Fatal exception To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Kernel Test Robot
