From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (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 1B87241C72 for ; Wed, 29 Jul 2026 00:08:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785283714; cv=none; b=fB3500mpuTe7q+FjmvRAE1lxRlchl28Lz4k8mIkzlnK8Qs6cGnUW9rz63Sf/Z/aizi2EwIVxtPv+uabjbKM6HFptxECPY4CGbNPkBrBCxFLvHeuPRB224//2G7sG91ox5eFqY2oh8tsz1DC+ip5JgFC8xALYSKj8IyQh2C1eVNU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785283714; c=relaxed/simple; bh=5KSyUxsSquWaqxJrpQRUYTIFgSOj64jsI3uOOnTrt1w=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Atw7Wp2d8BPDz/anQCLKbFTUJEzn80Ete++4NW6t87jI5hdQ1dtj9S2f/w4t6nYRh6CWaQKhWyA/oxuHe2CdNI07xf4jvg0DX1GD/O3ChgGvohEab9naiI3iy2l43YfepupifshKgB47L5wRYRScFsSlzA2LxSZFhfCZ5nCeXq8= 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=209.85.210.78 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-ot1-f78.google.com with SMTP id 46e09a7af769-7e9fdc2870fso297977a34.2 for ; Tue, 28 Jul 2026 17:08:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785283711; x=1785888511; 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=YA866TGxUMSIjShsMH9itC0w3w6ZSkdHHY4g4DQKNuU=; b=WNWdk5GKf2tIB6aGG7Oc/ZEgqvzzO44eYrqY/p1ngwaEeUhsYIH+Ldvmoj00zxXWLk A7jsQbBzVfGjlo0jjNI3/u1mKBoNb23JdKbjQuUKRkl1ev5lgOQNWEJobAweKD1uaC4P BDI28iHvjoeOjBsG6eg4BUcEy8f7JUsV2+r5XIXLKIt1vD8iwb1eWivZxV8L6NOl84Tf ZhepiL+y5pUb5qJOHvHkuN/Te1IjoDn7ZYZwhsSGA7Lv7NG1E4++e345K6ueW/hd0oBh 69EJ3qAPPh+wONpwphtMpqfIb5kkV4AYlqQv01mFrXr+NJ32Fl9ctHtdDZ9EBSq78Lnj +JLA== X-Forwarded-Encrypted: i=1; AHgh+RopOD8yxN1hFMItRwoLcZ88exWfOjAOqJDpcCX20TiYO23Ur5RG28rhFXp9rlNx+Hlkkxxp4q4T+rFi7Lb9@vger.kernel.org X-Gm-Message-State: AOJu0YxvuPoC/1D4kRwn86ekkJypSzCicoCUSeG317+B3v6+78ZRCkQF 4+8N/RfmkWmtRrkzZ9SwKyKGAbCCAWhOLji7ZGazQxztydkFYIsAFw0rGsnth60n4oVwL1Hml3K xalS03bV+j/TJNxm0dGdfdGhKUCUSHpKlDhfzu2KKT6LGriY3SZOIH5n/zM0= Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:f8e:b0:495:e0a9:8c0 with SMTP id 5614622812f47-4ad5ba6ae70mr2481156b6e.11.1785283710948; Tue, 28 Jul 2026 17:08:30 -0700 (PDT) Date: Tue, 28 Jul 2026 17:08:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a69447e.6bd615f2.c0aa.0001.GAE@google.com> Subject: [syzbot] [fs?] [usb?] KASAN: slab-use-after-free Read in lockref_get (2) From: syzbot To: dakr@kernel.org, driver-core@lists.linux.dev, gregkh@linuxfoundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 48a5a7ab8d6a Merge tag 'v7.2-rc4-smb3-client-fixes' of git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=169761b9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=145fa60d73086782 dashboard link: https://syzkaller.appspot.com/bug?extid=227dbc9afd022922d624 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13cc86b9580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f8109e580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/1eb5b7aa9ec5/disk-48a5a7ab.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/965506e050aa/vmlinux-48a5a7ab.xz kernel image: https://storage.googleapis.com/syzbot-assets/662778208054/bzImage-48a5a7ab.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+227dbc9afd022922d624@syzkaller.appspotmail.com dvb-usb: bulk message failed: -22 (6/0) dvb-usb: bulk message failed: -22 (5/0) ucsi_ccg 1-0008: ucsi_ccg_init failed - -110 ================================================================== BUG: KASAN: slab-use-after-free in __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline] BUG: KASAN: slab-use-after-free in _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158 Read of size 1 at addr ffff888059900c90 by task syz.3.43/6010 CPU: 0 UID: 0 PID: 6010 Comm: syz.3.43 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x13d/0x4b0 mm/kasan/report.c:482 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595 __kasan_check_byte+0x36/0x50 mm/kasan/common.c:574 kasan_check_byte include/linux/kasan.h:402 [inline] lock_acquire kernel/locking/lockdep.c:5842 [inline] lock_acquire+0x132/0x370 kernel/locking/lockdep.c:5825 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:158 spin_lock include/linux/spinlock.h:342 [inline] lockref_get+0x15/0x50 lib/lockref.c:50 dget include/linux/dcache.h:364 [inline] __simple_recursive_removal+0x3d/0x5c0 fs/libfs.c:601 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:781 i2c_device_probe+0x6e2/0xd10 drivers/i2c/i2c-core-base.c:610 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x64/0x160 drivers/base/bus.c:620 device_add+0x121d/0x1970 drivers/base/core.c:3772 i2c_new_client_device+0x660/0xd30 drivers/i2c/i2c-core-base.c:1019 new_device_store+0x20f/0x420 drivers/i2c/i2c-core-base.c:1307 dev_attr_store+0x58/0x80 drivers/base/core.c:2505 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 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: 0033:0x7ff4d2d9de99 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:00007ffcf8ba9808 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff4d3025fa0 RCX: 00007ff4d2d9de99 RDX: 000000000000000f RSI: 0000200000000700 RDI: 0000000000000004 RBP: 00007ff4d2e33eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff4d3025fac R14: 00007ff4d3025fa0 R15: 00007ff4d3025fa0 Allocated by task 6010: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:340 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:366 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4612 [inline] slab_alloc_node mm/slub.c:4945 [inline] kmem_cache_alloc_lru_noprof+0x267/0x6a0 mm/slub.c:4978 __d_alloc+0x35/0xa50 fs/dcache.c:1902 d_alloc+0x4a/0x1e0 fs/dcache.c:1981 lookup_one_qstr_excl+0x171/0x250 fs/namei.c:1806 __start_dirop fs/namei.c:2920 [inline] start_dirop+0x59/0xb0 fs/namei.c:2942 simple_start_creating+0xf9/0x110 fs/libfs.c:2305 debugfs_start_creating.part.0+0x82/0x170 fs/debugfs/inode.c:394 debugfs_start_creating fs/debugfs/inode.c:371 [inline] debugfs_create_dir+0x72/0x440 fs/debugfs/inode.c:572 i2c_device_probe+0x5f5/0xd10 drivers/i2c/i2c-core-base.c:588 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x64/0x160 drivers/base/bus.c:620 device_add+0x121d/0x1970 drivers/base/core.c:3772 i2c_new_client_device+0x660/0xd30 drivers/i2c/i2c-core-base.c:1019 new_device_store+0x20f/0x420 drivers/i2c/i2c-core-base.c:1307 dev_attr_store+0x58/0x80 drivers/base/core.c:2505 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 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 Freed by task 23: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584 poison_slab_object mm/kasan/common.c:253 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:2705 [inline] slab_free mm/slub.c:6405 [inline] kmem_cache_free+0x127/0x6b0 mm/slub.c:6532 rcu_do_batch kernel/rcu/tree.c:2645 [inline] rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2897 handle_softirqs+0x1ea/0x9b0 kernel/softirq.c:622 run_ksoftirqd kernel/softirq.c:1076 [inline] run_ksoftirqd+0x38/0x60 kernel/softirq.c:1068 smpboot_thread_fn+0x3d3/0xaa0 kernel/smpboot.c:160 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Last potentially related work creation: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556 __call_rcu_common.constprop.0+0xa5/0x9b0 kernel/rcu/tree.c:3159 dentry_free+0x145/0x2b0 fs/dcache.c:450 dentry_kill+0x5e8/0xc20 fs/dcache.c:845 finish_dput fs/dcache.c:1001 [inline] dput.part.0+0xd7/0x240 fs/dcache.c:1042 dput+0x1f/0x30 fs/dcache.c:1037 find_next_child+0x18f/0x280 fs/libfs.c:592 __simple_recursive_removal+0x2ab/0x5c0 fs/libfs.c:609 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:781 i2c_del_adapter+0x17f/0x2d0 drivers/i2c/i2c-core-base.c:1829 dvb_usb_i2c_exit+0x9f/0xf0 drivers/media/usb/dvb-usb/dvb-usb-i2c.c:46 dvb_usb_exit drivers/media/usb/dvb-usb/dvb-usb-init.c:144 [inline] dvb_usb_device_exit+0x313/0x520 drivers/media/usb/dvb-usb/dvb-usb-init.c:338 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:618 [inline] device_remove+0x12a/0x180 drivers/base/dd.c:610 __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664 device_del+0x376/0x9b0 drivers/base/core.c:3961 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x1c4f/0x4a60 drivers/usb/core/hub.c:5953 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 The buggy address belongs to the object at ffff888059900bc0 which belongs to the cache dentry of size 312 The buggy address is located 208 bytes inside of freed 312-byte region [ffff888059900bc0, ffff888059900cf8) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x59900 head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888059901ed9 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000040 ffff88801d2de280 dead000000000100 dead000000000122 raw: 0000000000000000 0000000800150015 00000000f5000000 ffff888059901ed9 head: 00fff00000000040 ffff88801d2de280 dead000000000100 dead000000000122 head: 0000000000000000 0000000800150015 00000000f5000000 ffff888059901ed9 head: 00fff00000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Reclaimable, gfp_mask 0xd20d0(__GFP_RECLAIMABLE|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5758, tgid 5758 (syz-executor), ts 89145754316, free_ts 80519981616 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859 prep_new_page mm/page_alloc.c:1867 [inline] get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304 alloc_slab_page mm/slub.c:3294 [inline] allocate_slab mm/slub.c:3408 [inline] new_slab+0xa2/0x650 mm/slub.c:3454 refill_objects+0xe3/0x410 mm/slub.c:7338 refill_sheaf mm/slub.c:2832 [inline] __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4703 alloc_from_pcs mm/slub.c:4801 [inline] slab_alloc_node mm/slub.c:4933 [inline] kmem_cache_alloc_lru_noprof+0x46a/0x6a0 mm/slub.c:4978 __d_alloc+0x35/0xa50 fs/dcache.c:1902 d_alloc_pseudo+0x1c/0xc0 fs/dcache.c:2033 alloc_path_pseudo fs/file_table.c:407 [inline] alloc_file_pseudo+0x118/0x290 fs/file_table.c:423 sock_alloc_file+0x50/0x210 net/socket.c:532 sock_map_fd net/socket.c:562 [inline] __sys_socket+0x1c0/0x260 net/socket.c:1802 __do_sys_socket net/socket.c:1807 [inline] __se_sys_socket net/socket.c:1805 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1805 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 page last free pid 5698 tgid 5698 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1406 [inline] free_pages_prepare+0x586/0xd80 mm/page_alloc.c:1451 __free_contig_range_common+0x14f/0x250 mm/page_alloc.c:6897 __free_contig_range mm/page_alloc.c:6942 [inline] free_pages_bulk+0x12a/0x200 mm/page_alloc.c:5257 vm_area_free_pages+0xad/0x2b0 mm/vmalloc.c:3439 vfree mm/vmalloc.c:3488 [inline] vfree+0x107/0x750 mm/vmalloc.c:3462 kcov_put kernel/kcov.c:447 [inline] kcov_put kernel/kcov.c:443 [inline] kcov_close+0x34/0x60 kernel/kcov.c:554 __fput+0x3ff/0xb50 fs/file_table.c:512 task_work_run+0x150/0x240 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x951/0x2ae0 kernel/exit.c:1009 do_group_exit+0xd5/0x2a0 kernel/exit.c:1152 get_signal+0x1ec7/0x21e0 kernel/signal.c:3046 arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline] exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888059900b80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ffff888059900c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888059900c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ^ ffff888059900d00: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ffff888059900d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- 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