From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (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 6F88E84A35 for ; Mon, 14 Jul 2025 21:11:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752527500; cv=none; b=GfEpWwU+whoi4M5gzhiJUMucaavErfFkrW7+OoQ/o1I2BLbLnU/PKi8YEPiKVIO4ae5uvpxNOzTgSc7cO8HA+ff+Xz8UrfTDFq4LNuVo8J/xTlD7ocv0FTs9yRmfrxYr2ZwK2x5X6nyf+SWJZ1kc5lXQtYuc71MeA8dNbag4fm4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752527500; c=relaxed/simple; bh=+ctVWatCu7lgPfwHkdPKCaqXaZhAmGu3JQJ8Ne63Ljw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Y2v2qFsNsQJI/Ltyw/XtfvhbfAFY7NXO5SUghJGTVlxd3y86JH0HFqQEldxniRmY1NO4TwY5vJDhJeF+nfZuEeXNVzdyFd/Oz4HNRJUUpOZ5SKtOTxgvUiz0MN/WDiqEo99IWvTlD2d0Qj85/zQ5IizKeQJd7sxgpbfNuK7XwPc= 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=209.85.166.79 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-io1-f79.google.com with SMTP id ca18e2360f4ac-86d126265baso447056839f.0 for ; Mon, 14 Jul 2025 14:11:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752527496; x=1753132296; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=x5yOpjMiDG72er6VPMXxsfpav3LwFE3KOyDhO2auBsg=; b=O6geUW7JazTEQAfmgS3wh41g5sRFBOjYRVkOYDpCukoZQMz944tpgpzg8H5OsZvyln AC1qS0xyELwZh2uE44TB0pecfU1NqTMo/zXpiqztwOEByP+A5XxL7NIzZjdo8SuqIzOX SQCZz6vkfn8PGaxsZscce/0D+Wlcd75pGNnWFN5T8kPR3b96NhF/Yc7sw4l+nozDTdw/ TNm4w4igjwbzCw0IQg6f9nFZKDtsyEadtRXgFtSwpg42VKTiK3Hpb2xf44KKZfAsM83U QOMJNeXieJKYQ3Hhk4k53Q5BStr1rz9QNjjca7zEXyqlZV/zaHDb83N4LWgTv26sLWGq ky4A== X-Forwarded-Encrypted: i=1; AJvYcCU4LF1qI9wWqZtUFyJZTOLy70//q/K8ysJCN5SxlTJfzXU12yw9B+UnzFetQPj0Gp70nSYC+3Y0nHzT8PY=@vger.kernel.org X-Gm-Message-State: AOJu0Yzf4Flz9EvP4d7rdGogcxSOimWHBO0fznYjKSh60HfNfW1t+m6F trQIf9Cep0WXEbf3a174lNON2g5J4rX20yr4zC1nPNftuuC+VD3vxaISHXOQh/74HDWLMeDmWNY A8GmKjmi9MT12PZcSpxhDxAx+3d128YYPgKk6oupiiaMNsWqF8JA30tIlL28= X-Google-Smtp-Source: AGHT+IEbm+gvwuXrO5B9bMoUZ7tpUzQKFMn94FvpdcvDyzwLrp+i/VTJ1q4Oc8Jrnytjb4I6P5UWpEjWqhBMGBfk7t2X+5IMPr9t Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:15c7:b0:876:a8dc:96cc with SMTP id ca18e2360f4ac-87977f8234emr1765274739f.6.1752527496489; Mon, 14 Jul 2025 14:11:36 -0700 (PDT) Date: Mon, 14 Jul 2025 14:11:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68757288.a70a0220.5f69f.0003.GAE@google.com> Subject: [syzbot] [fs?] WARNING: bad unlock balance in query_matching_vma From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: a62b7a37e6fc Add linux-next specific files for 20250711 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1422dd82580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d42120e19faaef dashboard link: https://syzkaller.appspot.com/bug?extid=d4316c39e84f412115c9 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1222dd82580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1205d0f0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/691b5f8ab5b1/disk-a62b7a37.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/47d1a209784d/vmlinux-a62b7a37.xz kernel image: https://storage.googleapis.com/syzbot-assets/eb70d73c9e55/bzImage-a62b7a37.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d4316c39e84f412115c9@syzkaller.appspotmail.com ===================================== WARNING: bad unlock balance detected! 6.16.0-rc5-next-20250711-syzkaller #0 Not tainted ------------------------------------- syz.0.32/6076 is trying to release lock (vm_lock) at: [] get_next_vma fs/proc/task_mmu.c:181 [inline] [] query_vma_find_by_addr fs/proc/task_mmu.c:512 [inline] [] query_matching_vma+0x2f7/0x5c0 fs/proc/task_mmu.c:544 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz.0.32/6076: #0: ffffffff8e53c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8e53c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #0: ffffffff8e53c5a0 (rcu_read_lock){....}-{1:3}, at: query_vma_find_by_addr fs/proc/task_mmu.c:510 [inline] #0: ffffffff8e53c5a0 (rcu_read_lock){....}-{1:3}, at: query_matching_vma+0x141/0x5c0 fs/proc/task_mmu.c:544 stack backtrace: CPU: 1 UID: 0 PID: 6076 Comm: syz.0.32 Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_unlock_imbalance_bug+0xdc/0xf0 kernel/locking/lockdep.c:5301 __lock_release kernel/locking/lockdep.c:5540 [inline] lock_release+0x269/0x3e0 kernel/locking/lockdep.c:5892 vma_refcount_put include/linux/mmap_lock.h:141 [inline] vma_end_read include/linux/mmap_lock.h:237 [inline] unlock_vma+0x70/0x180 fs/proc/task_mmu.c:135 get_next_vma fs/proc/task_mmu.c:181 [inline] query_vma_find_by_addr fs/proc/task_mmu.c:512 [inline] query_matching_vma+0x2f7/0x5c0 fs/proc/task_mmu.c:544 do_procmap_query fs/proc/task_mmu.c:629 [inline] procfs_procmap_ioctl+0x3f9/0xd50 fs/proc/task_mmu.c:747 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f667ed8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f667fb27038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f667efb6080 RCX: 00007f667ed8e929 RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 0000000000000003 RBP: 00007f667ee10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f667efb6080 R15: 00007fff4a18d328 --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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