From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A8E2C00140 for ; Sun, 31 Jul 2022 08:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232076AbiGaIDS (ORCPT ); Sun, 31 Jul 2022 04:03:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbiGaIDQ (ORCPT ); Sun, 31 Jul 2022 04:03:16 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56ED8D66 for ; Sun, 31 Jul 2022 01:03:15 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id 15-20020a056e0220cf00b002dd711a2677so4913794ilq.21 for ; Sun, 31 Jul 2022 01:03:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; 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charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in __hrtimer_run_queues ------------[ cut here ]------------ On CPU1 hrtimer tick_sched_timer took more than 4 ticks WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:1689 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] WARNING: CPU: 1 PID: 0 at kernel/time/hrtimer.c:1689 __hrtimer_run_queues+0xe3c/0x1000 kernel/time/hrtimer.c:1754 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.17.0-rc6-next-20220303-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1689 [inline] RIP: 0010:__hrtimer_run_queues+0xe3c/0x1000 kernel/time/hrtimer.c:1754 Code: fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e b7 01 00 00 41 8b 77 40 48 c7 c7 a0 68 ce 89 48 8b 54 24 08 e8 50 82 b0 07 <0f> 0b e9 62 f4 ff ff e8 c8 42 5c 00 e9 5c f6 ff ff 48 8b 7c 24 18 RSP: 0018:ffffc900001e0e30 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888011a21d40 RSI: ffffffff81602878 RDI: fffff5200003c1b8 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815fd23e R11: 0000000000000000 R12: ffff8880b9d2afa0 R13: 0000000000000000 R14: ffff8880b9d2a680 R15: ffff8880b9d2a600 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba30aa0097 CR3: 000000002354c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1816 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:116 [inline] RIP: 0010:acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:556 Code: 89 de e8 4d e6 18 f8 84 db 75 ac e8 64 e2 18 f8 e8 1f 2b 1f f8 eb 0c e8 58 e2 18 f8 0f 00 2d 91 ed d1 00 e8 4c e2 18 f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 c7 e4 18 f8 48 85 db RSP: 0018:ffffc90000177d18 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888011a21d40 RSI: ffffffff896045f4 RDI: 0000000000000000 RBP: ffff888016545864 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817f7138 R11: 0000000000000000 R12: 0000000000000001 R13: ffff888016545800 R14: ffff888016545864 R15: ffff8880199b0004 acpi_idle_enter+0x361/0x500 drivers/acpi/processor_idle.c:692 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:158 [inline] cpuidle_idle_call kernel/sched/idle.c:239 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272 secondary_startup_64_no_verify+0xc3/0xcb ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: e8 4d e6 18 f8 callq 0xf818e654 7: 84 db test %bl,%bl 9: 75 ac jne 0xffffffb7 b: e8 64 e2 18 f8 callq 0xf818e274 10: e8 1f 2b 1f f8 callq 0xf81f2b34 15: eb 0c jmp 0x23 17: e8 58 e2 18 f8 callq 0xf818e274 1c: 0f 00 2d 91 ed d1 00 verw 0xd1ed91(%rip) # 0xd1edb4 23: e8 4c e2 18 f8 callq 0xf818e274 28: fb sti 29: f4 hlt * 2a: 9c pushfq <-- trapping instruction 2b: 5b pop %rbx 2c: 81 e3 00 02 00 00 and $0x200,%ebx 32: fa cli 33: 31 ff xor %edi,%edi 35: 48 89 de mov %rbx,%rsi 38: e8 c7 e4 18 f8 callq 0xf818e504 3d: 48 85 db test %rbx,%rbx Tested on: commit: 91265a6d Add linux-next specific files for 20220303 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git console output: https://syzkaller.appspot.com/x/log.txt?x=11658846080000 kernel config: https://syzkaller.appspot.com/x/.config?x=617f79440a35673a dashboard link: https://syzkaller.appspot.com/bug?extid=eec403943a2a2455adaa compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=161e281e080000