From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f207.google.com (mail-il1-f207.google.com [209.85.166.207]) (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 4DEE4139B for ; Tue, 3 Jun 2025 15:30:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748964640; cv=none; b=l4PD1pAM6rPvrVenx76HwYeOt3ou87HMejlzlGI7LcY1MDg5hfa9Vh0PAYy0ULkrI6tOBpAvDUlvkxVkefLx1b/bTpB0cnVO6dqYdIr2uLI6HVvtHUuG6Q4C4s3wHg8Fm0+9SBnCiTE7YIUHgyMOsLmVXoLwR2ybm6Et2m+g3V0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748964640; c=relaxed/simple; bh=NgVzIKrV+vT373R7pPrBdnfQ+JbPy3LNrhvewfBlpoY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=J7GaAnKEw2DjydDi7EZxjcbl6CzvNXT8wtEm+w/LLahHLetDCNn8Yv7lrlTqortgjiYA9yWv166MmdnMcHJjJxm6eDwwoMvxF/G+ciheWHTjaxCFXBWqxgQ5JhfQiS8cuY2ddMt0qd63a9e+95UbsC289sf0/f+UZKi/wW0u2jg= 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=209.85.166.207 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-il1-f207.google.com with SMTP id e9e14a558f8ab-3ddaf7f2fcdso24085975ab.0 for ; Tue, 03 Jun 2025 08:30:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1748964637; x=1749569437; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=CdTk/4XrBAuy39KbJJeOpNDNYb42O4c1octVwjpyi+Q=; b=kHScaYtIdw9DCkLmN5j3t8k7X/ADunRoi7fICQdArXxtc3JE9npOmm/ApOEMBLBTSX sp5y8gKI+HzsdWSBkz9+t8MhGtTUA6hGwHwvG7HK0zrwRFtTYgyCxejKeu46Sbhz1op+ /JHx89zkyNDloSV3+nsbFlrzkYIxVMx4h2likDOljWrrPaxQC5EH1jZoKGfBdYCskcc+ LPyGbB7mMj0Q6nwXRCrnbSbmKLUp7WNXezkhSDBjEEuRmpU9B74CYvY1EztoTki77ia4 Iv4Q5+FUqEpmP35WoAbZnGSYGXNwnMDHrARbYcQBSMDpZSK1BLVIsA3BPCEaknoNGjCd 1bFQ== X-Forwarded-Encrypted: i=1; AJvYcCWacVn6SD1nHBs8L6Ttmkha1alxaOtBxuEW53BLvAOdi58VhKdyRjXs2gmd3SWsRLp0HRveHuzhVsaXCcg=@vger.kernel.org X-Gm-Message-State: AOJu0YwIeH8eAi6ot2wIaX8VvVVNjiOkie9qFMsw0FNgNMiPotEpJtPI UoM53r9FuiOPvUY2Bkf5HZY6DdWsMBtK6+FmLjZa/S8cx6buPW/UJYFSVrbShtZQRdjhRbH/uX4 ZjBSZtKEBjV6m5XJrRR/cDa2Eamo2o6tl7q+PP4XT3sEeVBEjdpkUfcs6aQw= X-Google-Smtp-Source: AGHT+IESbnyBV6XlZCYt+k5zSHtdsO6KCiniIvtH0ta7Xbqbk/5TT2jaD91TWXYrgk1NsjL2k1R75FSVdCdjnt23EuWSv+mFTJwy Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2287:b0:3dc:8a53:c9c4 with SMTP id e9e14a558f8ab-3dda3342b6cmr117953985ab.6.1748964634098; Tue, 03 Jun 2025 08:30:34 -0700 (PDT) Date: Tue, 03 Jun 2025 08:30:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <683f151a.050a0220.55ceb.0014.GAE@google.com> Subject: [syzbot] [net?] WARNING in napi_disable From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d7fa1af5b33e Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=14c71170580000 kernel config: https://syzkaller.appspot.com/x/.config?x=89c13de706fbf07a dashboard link: https://syzkaller.appspot.com/bug?extid=406cbe754deca9aeaa82 compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/da97ad659b2c/disk-d7fa1af5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/659e123552a8/vmlinux-d7fa1af5.xz kernel image: https://storage.googleapis.com/syzbot-assets/6ec5dbf4643e/Image-d7fa1af5.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+406cbe754deca9aeaa82@syzkaller.appspotmail.com ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 6666 at kernel/locking/mutex.c:580 __mutex_lock_common+0x1650/0x2190 kernel/locking/mutex.c:580 Modules linked in: CPU: 0 UID: 0 PID: 6666 Comm: kworker/u8:4 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: netns cleanup_net pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x1650/0x2190 kernel/locking/mutex.c:580 lr : __mutex_lock_common+0x1650/0x2190 kernel/locking/mutex.c:580 sp : ffff80009bb27560 x29: ffff80009bb27720 x28: dfff800000000000 x27: ffff80009bb27640 x26: ffff700013764ec8 x25: 0000000000000000 x24: ffff80009bb27680 x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000d446ccd2 x18: 1fffe0003386aa76 x17: 0000000000000000 x16: ffff80008ad27e48 x15: ffff700011e740c0 x14: 1ffff00011e740c0 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011e740c0 x10: 0000000000ff0100 x9 : 120a1682c186fb00 x8 : 120a1682c186fb00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009bb26eb8 x4 : ffff80008f415ba0 x3 : ffff800080548ef0 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: __mutex_lock_common+0x1650/0x2190 kernel/locking/mutex.c:580 (P) __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 netdev_lock include/linux/netdevice.h:2751 [inline] napi_disable+0x4c/0x84 net/core/dev.c:7238 gro_cells_destroy+0xf4/0x374 net/core/gro_cells.c:116 ip_tunnel_dev_free+0x20/0x38 net/ipv4/ip_tunnel.c:1102 netdev_run_todo+0xb44/0xd24 net/core/dev.c:11300 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:157 cleanup_net+0x574/0x9c0 net/core/net_namespace.c:650 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 irq event stamp: 1642461 hardirqs last enabled at (1642461): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1642461): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (1642460): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1642460): [] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:162 softirqs last enabled at (1641216): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (1641216): [] netif_addr_unlock_bh include/linux/netdevice.h:4804 [inline] softirqs last enabled at (1641216): [] dev_mc_flush+0x1b0/0x1f4 net/core/dev_addr_lists.c:1037 softirqs last disabled at (1641214): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address ffff0000d446ccd2 KASAN: maybe wild-memory-access in range [0xfffc0006a2366690-0xfffc0006a2366697] Mem abort info: ESR = 0x0000000096000021 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x21: alignment fault Data abort info: ISV = 0, ISS = 0x00000021, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000002079fa000 [ffff0000d446ccd2] pgd=0000000000000000, p4d=180000023ffff403, pud=180000023f41b403, pmd=180000023f378403, pte=006800011446c707 Internal error: Oops: 0000000096000021 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 6666 Comm: kworker/u8:4 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: netns cleanup_net pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lse__cmpxchg_case_acq_64 arch/arm64/include/asm/atomic_lse.h:272 [inline] pc : __cmpxchg_case_acq_64 arch/arm64/include/asm/cmpxchg.h:121 [inline] pc : __cmpxchg_acq arch/arm64/include/asm/cmpxchg.h:169 [inline] pc : raw_atomic64_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4181 [inline] pc : raw_atomic64_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4299 [inline] pc : raw_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:1482 [inline] pc : atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4458 [inline] pc : __mutex_trylock_common+0x178/0x258 kernel/locking/mutex.c:112 lr : instrument_atomic_read_write include/linux/instrumented.h:96 [inline] lr : atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4457 [inline] lr : __mutex_trylock_common+0x16c/0x258 kernel/locking/mutex.c:112 sp : ffff80009bb27480 x29: ffff80009bb27500 x28: ffff0000d9f59e80 x27: ffff80009bb274a0 x26: 1ffff00013764e94 x25: dfff800000000000 x24: ffff0000d9f59e80 x23: 1ffff00012dee370 x22: ffff80008f32136c x21: ffff0000d9f59e80 x20: ffff0000d446ccd2 x19: 0000000000000000 x18: 1fffe0003386aa76 x17: 0000000000000000 x16: ffff800080514f0c x15: 0000000000000001 x14: 1ffff00013764e98 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700013764e99 x10: dfff800000000000 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000001 x6 : ffff8000890d4c0c x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800080515078 x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001 Call trace: __lse__cmpxchg_case_acq_64 arch/arm64/include/asm/atomic_lse.h:272 [inline] (P) __cmpxchg_case_acq_64 arch/arm64/include/asm/cmpxchg.h:121 [inline] (P) __cmpxchg_acq arch/arm64/include/asm/cmpxchg.h:169 [inline] (P) raw_atomic64_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4181 [inline] (P) raw_atomic64_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:4299 [inline] (P) raw_atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-long.h:1482 [inline] (P) atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:4458 [inline] (P) __mutex_trylock_common+0x178/0x258 kernel/locking/mutex.c:112 (P) __mutex_trylock kernel/locking/mutex.c:135 [inline] __mutex_lock_common+0x1e8/0x2190 kernel/locking/mutex.c:604 __mutex_lock kernel/locking/mutex.c:746 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798 netdev_lock include/linux/netdevice.h:2751 [inline] napi_disable+0x4c/0x84 net/core/dev.c:7238 gro_cells_destroy+0xf4/0x374 net/core/gro_cells.c:116 ip_tunnel_dev_free+0x20/0x38 net/ipv4/ip_tunnel.c:1102 netdev_run_todo+0xb44/0xd24 net/core/dev.c:11300 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:157 cleanup_net+0x574/0x9c0 net/core/net_namespace.c:650 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 Code: 941c570a f94023e9 d503201f aa0903e8 (c8e87e95) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 941c570a bl 0x715c28 4: f94023e9 ldr x9, [sp, #64] 8: d503201f nop c: aa0903e8 mov x8, x9 * 10: c8e87e95 casa x8, x21, [x20] <-- trapping instruction --- 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