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McKenney" CC: , , , Subject: [paulmck-rcu:dev.2023.11.08a] [EXP locktorture] 1254a620b4: WARNING:at_kernel/rcu/tree_stall.h:#rcu_stall_chain_notifier_register Message-ID: <202312071506.6eac1bac-oliver.sang@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline X-ClientProxiedBy: SG2P153CA0021.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::8) To LV3PR11MB8603.namprd11.prod.outlook.com (2603:10b6:408:1b6::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV3PR11MB8603:EE_|MN0PR11MB6183:EE_ X-MS-Office365-Filtering-Correlation-Id: f9595eab-17c8-4561-1151-08dbf6fd5148 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV3PR11MB8603.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366004)(136003)(346002)(39860400002)(376002)(396003)(230273577357003)(230173577357003)(230922051799003)(186009)(451199024)(1800799012)(64100799003)(82960400001)(5660300002)(2906002)(83380400001)(6666004)(38100700002)(2616005)(1076003)(26005)(107886003)(6506007)(6512007)(36756003)(45080400002)(478600001)(66476007)(66556008)(966005)(6486002)(41300700001)(66946007)(4326008)(8676002)(316002)(8936002)(6916009)(86362001)(505234007);DIR:OUT;SFP:1102; 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[ 200.671183][ T876] WARNING: CPU: 1 PID: 876 at kernel/rcu/tree_stall.h:1088 rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.673094][ T876] Modules linked in: locktorture(+) torture [ 200.674129][ T876] CPU: 1 PID: 876 Comm: modprobe Tainted: G W N 6.6.0-03747-g1254a620b4a3 #1 44194d056aabc0fb2e11ad706d62f862fdc5dd23 [ 200.676413][ T876] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 200.678192][ T876] RIP: 0010:rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.679403][ T876] Code: 89 df e8 2f 0c 35 00 48 8b 33 85 ed 48 c7 c0 00 cb 49 97 48 c7 c2 a0 ca 49 97 48 0f 44 d0 48 c7 c7 40 ca 49 97 e8 fc 69 e4 ff <0f> 0b 85 ed 74 13 48 c7 c7 20 c7 1d 99 48 89 de 5b 41 5e 5d e9 83 All code ======== 0: 89 df mov %ebx,%edi 2: e8 2f 0c 35 00 call 0x350c36 7: 48 8b 33 mov (%rbx),%rsi a: 85 ed test %ebp,%ebp c: 48 c7 c0 00 cb 49 97 mov $0xffffffff9749cb00,%rax 13: 48 c7 c2 a0 ca 49 97 mov $0xffffffff9749caa0,%rdx 1a: 48 0f 44 d0 cmove %rax,%rdx 1e: 48 c7 c7 40 ca 49 97 mov $0xffffffff9749ca40,%rdi 25: e8 fc 69 e4 ff call 0xffffffffffe46a26 2a:* 0f 0b ud2 <-- trapping instruction 2c: 85 ed test %ebp,%ebp 2e: 74 13 je 0x43 30: 48 c7 c7 20 c7 1d 99 mov $0xffffffff991dc720,%rdi 37: 48 89 de mov %rbx,%rsi 3a: 5b pop %rbx 3b: 41 5e pop %r14 3d: 5d pop %rbp 3e: e9 .byte 0xe9 3f: 83 .byte 0x83 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 85 ed test %ebp,%ebp 4: 74 13 je 0x19 6: 48 c7 c7 20 c7 1d 99 mov $0xffffffff991dc720,%rdi d: 48 89 de mov %rbx,%rsi 10: 5b pop %rbx 11: 41 5e pop %r14 13: 5d pop %rbp 14: e9 .byte 0xe9 15: 83 .byte 0x83 [ 200.682780][ T876] RSP: 0018:ffffc90002b67978 EFLAGS: 00010246 [ 200.683857][ T876] RAX: 000000000000006b RBX: ffffffffc040a220 RCX: 0000000000000027 [ 200.685304][ T876] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8883aeb27a10 [ 200.686724][ T876] RBP: 0000000000000000 R08: ffff8883aeb27a13 R09: 1ffff11075d64f42 [ 200.688142][ T876] R10: dffffc0000000000 R11: ffffed1075d64f43 R12: ffff88814879e080 [ 200.689573][ T876] R13: ffffc90002b679e0 R14: dffffc0000000000 R15: dffffc0000000000 [ 200.690976][ T876] FS: 0000000000000000(0000) GS:ffff8883aeb00000(0063) knlGS:00000000f7aa9700 [ 200.692536][ T876] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 200.693695][ T876] CR2: 000000005664b010 CR3: 0000000141a71000 CR4: 00000000000406f0 [ 200.695095][ T876] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 200.696540][ T876] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 200.698173][ T876] Call Trace: [ 200.698865][ T876] [ 200.699476][ T876] ? __warn (kernel/panic.c:235 kernel/panic.c:673) [ 200.700283][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.701381][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.702461][ T876] ? report_bug (lib/bug.c:?) [ 200.703294][ T876] ? handle_bug (arch/x86/kernel/traps.c:237) [ 200.704128][ T876] ? exc_invalid_op (arch/x86/kernel/traps.c:258) [ 200.704995][ T876] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568) [ 200.705913][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.707177][ T876] ? rcu_stall_chain_notifier_register (kernel/rcu/tree_stall.h:1087) [ 200.708908][ T876] init_module (include/linux/cpumask.h:909 kernel/locking/locktorture.c:98 kernel/locking/locktorture.c:1051) locktorture [ 200.710509][ T876] do_one_initcall (init/main.c:1232) [ 200.711382][ T876] ? 0xffffffffc0418000 [ 200.712246][ T876] ? __asan_register_globals (mm/kasan/generic.c:229) [ 200.713299][ T876] do_init_module (kernel/module/main.c:2530) [ 200.714163][ T876] __se_sys_finit_module (kernel/module/main.c:3148 kernel/module/main.c:3166 kernel/module/main.c:3186 kernel/module/main.c:3169) [ 200.715119][ T876] __do_fast_syscall_32 (arch/x86/entry/common.c:164) [ 200.716056][ T876] do_fast_syscall_32 (arch/x86/entry/common.c:255) [ 200.716965][ T876] entry_SYSENTER_compat_after_hwframe (arch/x86/entry/entry_64_compat.S:121) [ 200.718040][ T876] RIP: 0023:0xf7fbb539 [ 200.718801][ T876] Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 cc 90 90 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 All code ======== 0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 4: 10 07 adc %al,(%rdi) 6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi a: 10 08 adc %cl,(%rax) c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi ... 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24:* 89 e5 mov %esp,%ebp <-- trapping instruction 26: 0f 34 sysenter 28: cd 80 int $0x80 2a: 5d pop %rbp 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: cc int3 2f: 90 nop 30: 90 nop 31: 90 nop 32: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 39: 00 00 00 3c: 0f .byte 0xf 3d: 1f (bad) 3e: 44 rex.R ... Code starting with the faulting instruction =========================================== 0: 5d pop %rbp 1: 5a pop %rdx 2: 59 pop %rcx 3: c3 ret 4: cc int3 5: 90 nop 6: 90 nop 7: 90 nop 8: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) f: 00 00 00 12: 0f .byte 0xf 13: 1f (bad) 14: 44 rex.R The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231207/202312071506.6eac1bac-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki