From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f208.google.com (mail-oi1-f208.google.com [209.85.167.208]) (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 3F8733C0A00 for ; Mon, 17 Aug 2026 20:47:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786999654; cv=none; b=ELo08mqsM7urt03EVCmCrwtB93ifVcdG3C1c35W9TuPLNRPcGaNgknTcDpmY+DbeT2UHG2v1Lcwv+SPEznFwClNPdfyt5/3W+yM493J3K+qcFRV2CDOJjBNP4k61792dO4YzQTpXUmj6Al4J9ymnyAFdAfaLyC2v8HTlbvUADzQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786999654; c=relaxed/simple; bh=BGn2ujUovuTMukX4L67NrQfZG56K9yXJFYzNbXYpcm8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=H/MdeP7kAOpdOvcfC8xeydygSa0NoNpF7Mn18qJWc0l1uqOPFU1ONP5gjUqNpxnzJ9YDlO0yD4BKT7fBED3Abc3xmx7j4W2KV2Glet7tmVKvf05whe+u5NswBLPCFJLqO5CpiiaHEjHEltZQe3lzbTeIZr60Paj0LUNbYM87KvY= 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=209.85.167.208 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-oi1-f208.google.com with SMTP id 5614622812f47-4b28d7ffab1so405630b6e.1 for ; Mon, 17 Aug 2026 13:47:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786999652; x=1787604452; 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=u/Y2/CHiFCGoad8cy6uG4fSQ+ehLIX5B5GfrClKUFXc=; b=ORFnHYCaIPo5ii2aB7PwktDj9BuFDRBCzR/H7WV9i6gDtuDkO5esuWqRxKPC+jaPUO ySn60qtt/NX4vY6FJ0k1n8GvSP8gYeAyOfWFD1OkJJE3df05k7iRkok3V+kzXcn9KzZT ZKM01iaTxrrGt2OLnEYyr4IKuR/650CQB8uMUaEL0vEdqIHmej2d/lPAf+kVVAVbNSE9 M8Ua/8CCvM2GYtA1PHMoeIcAd0uEH8d73DG+btjNLkKmkYozy8O6O6n9BzPufZy+VPJh t0E7SkzaAyNsBSa0YuImqQuE3JM6N3tUOj0Yggkjh2Yt2NKMWef9CzsdYcfyIqJbIEy8 apdg== X-Gm-Message-State: AOJu0YzhGGrFnmfpna1rdMToxOF/CLWIjXLqZpVxHxhrpo8lWBEaxWwy E5E1J/9SVIBOeATQaTJoTMHlDC8YFN1fyQcprbG/DJ4SiWpa8UmXbiAGdMCcfdTUeKlJDHvCx05 YV4E2Gx3bMudC1p54s+UZZtZsMvkHsLAIrpsc9MLGaHq94ilZvmJVRc8ipxC6WA== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:170b:b0:4b2:8dbf:ffd with SMTP id 5614622812f47-4b29b1e7f2bmr1232455b6e.1.1786999652193; Mon, 17 Aug 2026 13:47:32 -0700 (PDT) Date: Mon, 17 Aug 2026 13:47:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a837364.dbb3a75c.20434b.0076.GAE@google.com> Subject: [syzbot] [mmc?] WARNING in cancel_delayed_work_sync (2) From: syzbot To: linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, syzkaller-bugs@googlegroups.com, ulf.hansson@linaro.org, ulfh@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3eb40771c00a Merge tag 'soc-fixes-7.2-3' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14749949580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d67342c314f228d dashboard link: https://syzkaller.appspot.com/bug?extid=c40b1b2a25a7801239d2 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/21569197c3cb/disk-3eb40771.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/09af5299a851/vmlinux-3eb40771.xz kernel image: https://storage.googleapis.com/syzbot-assets/c657b46695b7/bzImage-3eb40771.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c40b1b2a25a7801239d2@syzkaller.appspotmail.com ------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [] snd_rawmidi_write+0x44d/0xc60 sound/core/rawmidi.c:1614 WARNING: kernel/sched/core.c:9120 at __might_sleep+0x94/0xc0 kernel/sched/core.c:9120, CPU#1: syz.2.462/7622 Modules linked in: CPU: 1 UID: 0 PID: 7622 Comm: syz.2.462 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:__might_sleep+0x97/0xc0 kernel/sched/core.c:9120 Code: 8b 94 24 70 18 00 00 48 85 d2 75 14 48 83 c4 08 89 ee 48 89 df 31 d2 5b 5d 41 5c e9 33 fc ff ff 48 8d 3d 0c 81 6f 0f 48 89 d1 <67> 48 0f b9 3a eb db e8 fd 3d a5 00 eb 9f 89 74 24 04 e8 22 3e a5 RSP: 0018:ffffc90000a08be8 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: ffffffff8beddf40 RCX: ffffffff89524b6d RDX: ffffffff89524b6d RSI: 0000000000000001 RDI: ffffffff91454550 RBP: 0000000000001187 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880291d4a80 R13: 1ffff9200014118e R14: ffffffff88b89840 R15: 0000000000000001 FS: 00007faa891ce6c0(0000) GS:ffff888123cde000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000004000 CR3: 000000002dc05000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync kernel/workqueue.c:4487 [inline] cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4568 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700 vub300_delete drivers/mmc/host/vub300.c:379 [inline] kref_put include/linux/kref.h:65 [inline] vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline] vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742 call_timer_fn+0x19a/0x610 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers+0x757/0xb00 kernel/time/timer.c:2374 __run_timer_base kernel/time/timer.c:2386 [inline] __run_timer_base kernel/time/timer.c:2378 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2395 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405 handle_softirqs+0x1ea/0x9b0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:198 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 96 90 26 f6 48 89 df e8 1e e0 26 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 c5 ed 15 f6 65 8b 05 ee a6 c4 08 85 c0 74 16 5b RSP: 0018:ffffc9000209f8e0 EFLAGS: 00000246 RAX: 0000000000000006 RBX: ffff8880b8526280 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8e3aced0 RDI: ffffffff8c600380 RBP: 0000000000000283 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b8526280 R13: 0000000000000000 R14: 00000000ffffffff R15: ffff8880b85262c8 __mod_timer+0x409/0xca0 kernel/time/timer.c:1139 add_timer+0x62/0x90 kernel/time/timer.c:1249 schedule_timeout+0x122/0x280 kernel/time/sleep_timeout.c:98 snd_rawmidi_write+0x492/0xc60 sound/core/rawmidi.c:1616 do_loop_readv_writev fs/read_write.c:851 [inline] do_loop_readv_writev fs/read_write.c:836 [inline] vfs_writev+0x5ed/0xdd0 fs/read_write.c:1060 do_writev+0x28a/0x340 fs/read_write.c:1104 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faa8839e0d9 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:00007faa891ce028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007faa88625fa0 RCX: 00007faa8839e0d9 RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000005 RBP: 00007faa88435024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007faa88626038 R14: 00007faa88625fa0 R15: 00007fff04c4f0a8 ---------------- Code disassembly (best guess): 0: 8b 94 24 70 18 00 00 mov 0x1870(%rsp),%edx 7: 48 85 d2 test %rdx,%rdx a: 75 14 jne 0x20 c: 48 83 c4 08 add $0x8,%rsp 10: 89 ee mov %ebp,%esi 12: 48 89 df mov %rbx,%rdi 15: 31 d2 xor %edx,%edx 17: 5b pop %rbx 18: 5d pop %rbp 19: 41 5c pop %r12 1b: e9 33 fc ff ff jmp 0xfffffc53 20: 48 8d 3d 0c 81 6f 0f lea 0xf6f810c(%rip),%rdi # 0xf6f8133 27: 48 89 d1 mov %rdx,%rcx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: eb db jmp 0xc 31: e8 fd 3d a5 00 call 0xa53e33 36: eb 9f jmp 0xffffffd7 38: 89 74 24 04 mov %esi,0x4(%rsp) 3c: e8 .byte 0xe8 3d: 22 3e and (%rsi),%bh 3f: a5 movsl %ds:(%rsi),%es:(%rdi) --- 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