From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE67037E2EB for ; Fri, 3 Jul 2026 09:39:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783071583; cv=none; b=TotclNSf7MUbt+JT09/50P1FxCiMsaLLsIrWU1JzKQPvcrn2DKsWhVNeZH5UXKOlUI8KYd31qSDN8/oxs1Ro+TQMSdAkzW9bWIDoBmEa7/VIbpHrgbAW6FqiGlU5ykH3egQuC4yFJplBBUQ92rEBT+bfLgRQXyqCHGgzNr+wtUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783071583; c=relaxed/simple; bh=6AeHPbH7uyaRKeP76lokhsAxGHCH5mEG/xU8G51w5oA=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=dgGnhya1uBaflRdms+XeoqgFLHQ8MDQzdPUHMYQMwP60Tik1RlCP4LFr8PUlWOVcwRLk9bF5r7pA4tyoaRY0PLPvJ366bjQjow4QSc7kyHv4mjgJCDO1nVHCB3sRhELA+V4oQJjk07tjcGXqGrFoLqhkooU7jjAYFWpjlCiqJe8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cNtqcIWF; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cNtqcIWF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC6AE1F00A3A; Fri, 3 Jul 2026 09:39:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783071581; bh=Ab32DNMaNLapU3XBPPEdMI/8UlcEx8GXml4VM8iYyOM=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=cNtqcIWFKHBqpfRiCVFXkfbjRbSP9KT5Q7Dy3dEyg0RfilHEzpG/TJYOsx2czkbMS eUerZrlhc3Fhbeoyz31iuCTMR+t1GdTmP/7bSoSYkQBHMg+ZBQww0eVi2EurRg4YdJ NTKinEu4m2mQILGpX+FFUISum1AcivReVOuHkQaBB+hvzid4I3tkooJQpJ6hQZLGL+ MBWtyUZCkGZ2+W0lGxCWiJc+YrvIZfh2Gw0ngBfny92rjS3KNzn/mgY9MCq0Ewx6Ay prT++oDbl1g7QddH368d1olZNswRbbO/IoUsFleRmAHHAhLSwurVFlJ1SuhY3MmVzH FPa7ucY+jm+IQ== From: Thomas Gleixner To: syzbot , bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, x86@kernel.org Cc: Peter Zijlstra Subject: Re: [syzbot] [kernel?] WARNING in update_rq_clock (2) In-Reply-To: <6a470486.52c20a74.1f8b39.000c.GAE@google.com> References: <6a470486.52c20a74.1f8b39.000c.GAE@google.com> Date: Fri, 03 Jul 2026 11:39:38 +0200 Message-ID: <87fr20mmxx.ffs@fw13> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Thu, Jul 02 2026 at 17:38, syzbot wrote: CC+: Peter Dear syzbot folks. The selection of people you CC on your reports is annoyingly random. The splat clearly says: > WARNING: kernel/sched/sched.h:1641 at lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline], CPU#0: syz.4.1183/11558 So why not picking that up and: # scripts/get_maintainer.pl -f kernel/sched/sched.h Ingo Molnar (maintainer:SCHEDULER) Peter Zijlstra (maintainer:SCHEDULER) Juri Lelli (maintainer:SCHEDULER) Vincent Guittot (maintainer:SCHEDULER) Dietmar Eggemann (reviewer:SCHEDULER) Steven Rostedt (reviewer:SCHEDULER) Ben Segall (reviewer:SCHEDULER) Mel Gorman (reviewer:SCHEDULER) Valentin Schneider (reviewer:SCHEDULER) K Prateek Nayak (reviewer:SCHEDULER) linux-kernel@vger.kernel.org (open list:SCHEDULER) ? Leaving the report untrimmed for Peter. > syzbot found the following issue on: > > HEAD commit: 8b69c0475871 Merge tag 'input-for-v7.2-rc0-2' of git://git.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=1196f4ea580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=eb3cf873145f98c4 > dashboard link: https://syzkaller.appspot.com/bug?extid=681e729b2cf0d4860042 > 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/6fbba2b94559/disk-8b69c047.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/377e82061e2d/vmlinux-8b69c047.xz > kernel image: https://storage.googleapis.com/syzbot-assets/f299b46fb771/bzImage-8b69c047.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+681e729b2cf0d4860042@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > debug_locks && !(lock_is_held(&(__rq_lockp(rq))->dep_map) != 0) > WARNING: kernel/sched/sched.h:1641 at lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline], CPU#0: syz.4.1183/11558 > WARNING: kernel/sched/sched.h:1641 at lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline], CPU#0: syz.4.1183/11558 > WARNING: kernel/sched/sched.h:1641 at update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865, CPU#0: syz.4.1183/11558 > Modules linked in: > CPU: 0 UID: 0 PID: 11558 Comm: syz.4.1183 Tainted: G U L syzkaller #0 PREEMPT(full) > Tainted: [U]=USER, [L]=SOFTLOCKUP > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 > RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1641 [inline] > RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1638 [inline] > RIP: 0010:update_rq_clock+0x40a/0xd20 kernel/sched/core.c:865 > Code: ab c8 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d8 7e c8 09 a8 04 0f 84 df fc ff ff 90 0f 0b 90 e9 d6 fc ff ff 90 <0f> 0b 90 e9 92 fc ff ff 4c 8d 83 c0 0b 00 00 48 b8 00 00 00 00 00 > RSP: 0018:ffffc90003cb70b8 EFLAGS: 00010046 > RAX: 0000000000000000 RBX: ffff8880b853b600 RCX: 0000000000000001 > RDX: 0000000000000046 RSI: ffffffff8df333b0 RDI: ffffffff8c1e8f80 > RBP: ffffc90003cb7260 R08: 0000000000000001 R09: 0000000000000001 > R10: ffffffff90dbdb97 R11: 0000000000000000 R12: ffffffff90dc0f44 > R13: ffff8880b853c4e0 R14: ffff88801e6a1f00 R15: ffff8880b843c198 > FS: 00007fece89b36c0(0000) GS:ffff8881242e7000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000000 CR3: 00000000775a2000 CR4: 00000000003526f0 > Call Trace: > > pick_next_task kernel/sched/core.c:6338 [inline] > __schedule+0x1e2d/0x6730 kernel/sched/core.c:7149 > preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7413 > preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12 > __local_bh_enable_ip+0xff/0x120 kernel/softirq.c:457 > local_bh_enable include/linux/bottom_half.h:33 [inline] > fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline] > kernel_fpu_end arch/x86/kernel/fpu/core.c:506 [inline] > kernel_fpu_end+0x64/0x80 arch/x86/kernel/fpu/core.c:499 > sha256_blocks_avx2+0x4e/0x90 lib/crypto/x86/sha256.h:31 > sha256_blocks lib/crypto/x86/sha256.h:58 [inline] > __sha256_update+0x188/0x1c0 lib/crypto/sha256.c:208 > crypto_sha256_update+0x23/0x30 crypto/sha256.c:142 > crypto_shash_finup+0x34b/0x6b0 crypto/shash.c:123 > crypto_shash_update include/crypto/hash.h:998 [inline] > ima_calc_file_hash_tfm+0x299/0x350 security/integrity/ima/ima_crypto.c:233 > ima_calc_file_hash+0x1e3/0x380 security/integrity/ima/ima_crypto.c:280 > ima_collect_measurement+0x94f/0xb30 security/integrity/ima/ima_api.c:300 > process_measurement+0xdfe/0x2350 security/integrity/ima/ima_main.c:425 > ima_file_mmap+0x1c4/0x1f0 security/integrity/ima/ima_main.c:523 > security_mmap_file+0x278/0x9b0 security/security.c:2581 > vm_mmap_pgoff+0xec/0x470 mm/util.c:575 > ksys_mmap_pgoff+0x285/0x610 mm/mmap.c:606 > __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] > __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] > __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 > do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] > do_syscall_64+0x115/0x840 arch/x86/entry/syscall_64.c:94 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7fece7b9ce59 > 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:00007fece89b3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 > RAX: ffffffffffffffda RBX: 00007fece7e16090 RCX: 00007fece7b9ce59 > RDX: 00004000000000df RSI: 200000000000000b RDI: 0000000000000000 > RBP: 00007fece7c32e6f R08: 0000000000000401 R09: 0000300000000000 > R10: 0000000000040eb1 R11: 0000000000000246 R12: 0000000000000000 > R13: 00007fece7e16128 R14: 00007fece7e16090 R15: 00007ffd39c61db8 > > > > --- > 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