From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C87F0335575 for ; Wed, 5 Aug 2026 00:13:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785888819; cv=none; b=ikvqahZNtfRY9QpzGg2jR47WY5w1eFGXePFc6F14T3oaSd7b97TFi8z7Gc764jsRsIWgsN6ak1KmOZZEXYHGX3sWYJYwYd6XYzFMKmLkK9V+lF1/TXv7C5jKz8PeEBx28v3VFm4YqUvw867kzPRUNI/TiiOUW6t9/Xf+T+G5Q0Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785888819; c=relaxed/simple; bh=StqHXHsq1xrifweB1bu7Tt1EyKpgFGYtbFhGvLIFaQ4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=u1xbiSGH0xvt/8nxFt/yA7xj9pzSYr8tmcVFkv1NHo67sxXKehRlCVNZQJiLmOBy70Pq3hXqZ0tboQ7lPbCYaLwsZ7XRZTJLLXTxDnVHMcfjLt3g1nTtuH820g35dQnX88Aee3+fn7BUDKgWiqDuXo4sTthK3a9WsVWfYTRGP98= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.160.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oa1-f80.google.com with SMTP id 586e51a60fabf-451acf33124so182279fac.0 for ; Tue, 04 Aug 2026 17:13:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785888816; x=1786493616; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=O7KN9y0JF+tscc/CnkMhp134UnJBM4ILIsj6dx3qmA8=; b=YoYR2MXPYub+6wSdMT3T6DZU3ynGd3+sGyjJQasu0WDPvW3FlBgyIZcQopDLh4WvOZ DhvK1va6xdmtRNJyxrhKGH728YKmejrQp4DYyDookWv8UpdZsnqb7bfZe+bL/TLH5zXH 5GmfJddmIiOievAanVbsDW7etKobVRi6eL2DQrz3noYMjAWOG5I3e7c1zvfYDZj/onQT 0rnWaLmUIFMIH2YZaiyftE+XZTa3cgeRWmYktbY2Zb/x4r5j1qu8L3JXFkkiC02tLYou dsKd4Pg14Czy18HCPqgXqbvKKJHeZPFM1Ddwn+Zwdk4OtuXfKv8VmuMSHcaXbSSP4zIb ymDQ== X-Gm-Message-State: AOJu0YwoLdG5JNkP8gcVMxkV4G12ZIYv4iZ8N+foPeVDJfjykTOUhr28 AcbMMhGzioYTn7M9bYMULe+SQKuIHv7bnci/HWkRgmvr1L1LCdYLTMk8gklYnBJFAV2tr3p+zmT +DIgSw1zaom5VdOP6burrKgTKHo+NxzcOOCiO90SKo18259CcNDcoTHIsNRdNTw== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4de7:b0:6a3:81a2:746f with SMTP id 006d021491bc7-6ae97084924mr1619053eaf.33.1785888816617; Tue, 04 Aug 2026 17:13:36 -0700 (PDT) Date: Tue, 04 Aug 2026 17:13:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a728030.9511d2ce.1fc5b9.035f.GAE@google.com> Subject: [syzbot] [kernel?] WARNING in irqentry_exit (2) From: syzbot To: linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3708dd948844 Merge tag 'pm-7.2-rc6' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17973632580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f221a1b5d497ed15 dashboard link: https://syzkaller.appspot.com/bug?extid=93cc6b9a8a81c9e47978 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/244376930b41/disk-3708dd94.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6a4fdb2a8dcf/vmlinux-3708dd94.xz kernel image: https://storage.googleapis.com/syzbot-assets/6d326f1f8ed8/bzImage-3708dd94.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+93cc6b9a8a81c9e47978@syzkaller.appspotmail.com ------------[ cut here ]------------ __lockdep_enabled && this_cpu_read(hardirqs_enabled) WARNING: ./include/linux/hrtimer_rearm.h:17 at hrtimer_test_and_clear_rearm_deferred_tif include/linux/hrtimer_rearm.h:17 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:52 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at rseq_grant_slice_extension include/linux/rseq_entry.h:236 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at __exit_to_user_mode_loop kernel/entry/common.c:54 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at exit_to_user_mode_loop kernel/entry/common.c:101 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline], CPU#0: syz.2.3762/30761 WARNING: ./include/linux/hrtimer_rearm.h:17 at irqentry_exit+0x718/0xa00 kernel/entry/common.c:165, CPU#0: syz.2.3762/30761 Modules linked in: CPU: 0 UID: 0 PID: 30761 Comm: syz.2.3762 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:hrtimer_test_and_clear_rearm_deferred_tif include/linux/hrtimer_rearm.h:17 [inline] RIP: 0010:hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:52 [inline] RIP: 0010:rseq_grant_slice_extension include/linux/rseq_entry.h:236 [inline] RIP: 0010:__exit_to_user_mode_loop kernel/entry/common.c:54 [inline] RIP: 0010:exit_to_user_mode_loop kernel/entry/common.c:101 [inline] RIP: 0010:__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] RIP: 0010:irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline] RIP: 0010:irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline] RIP: 0010:irqentry_exit+0x718/0xa00 kernel/entry/common.c:165 Code: 00 00 00 80 e8 c9 ee 58 f6 fb 83 3d 95 d1 69 05 00 74 1a 65 8b 05 d8 2a ab 08 85 c0 75 0f 65 8b 05 29 26 ab 08 85 c0 74 04 90 <0f> 0b 90 41 f7 c5 00 10 00 00 0f 84 74 fc ff ff f0 41 80 64 24 01 RSP: 0000:ffffc9000414ff00 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffc9000414ff48 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8e1a8f2e RDI: ffffffff8c400a80 RBP: ffffc9000414ff38 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888022f39f00 R13: 0000000000000010 R14: 000001efbbd43bba R15: 0000000000000000 FS: 00007f3e64dd56c0(0000) GS:ffff888123de1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ddddff8 CR3: 0000000034bd6000 CR4: 00000000003526f0 Call Trace: asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0033:0x7f3e66b9e019 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3e64dd50e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007f3e66e26098 RCX: 00007f3e66b9e019 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3e66e26098 RBP: 00007f3e66e26090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3e66e26128 R14: 00007ffe410c4bf0 R15: 00007ffe410c4cd8 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup