From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 75B4815DBC0 for ; Mon, 27 May 2024 12:16:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716812188; cv=none; b=djsQ75ji/YdMZPSld7mwFl6rzEGAC5FQxzc2WweFK3JgBeETupmx3D2Q+8PhoTXH0Ay6fBKYKW/b+2vWWlXUzISAm+QUpr+asxrN+IfVa3ac+GKXgD8x1ESpQHFZnpYEx5jYM8qAnhycPoimWdFLElVFBiLwecORwtUqdrjc1iQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716812188; c=relaxed/simple; bh=h/cCEDGEjDMZokInJrxDqPxuXuDSHn/PMcav3S+K7M0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=uKzzQBcgqjQ8zQSVbxQYROFM+0Q4FLi/GioF6vDZSECo0496JFlleu88EoCVdzahPvxH+1QriZCuQJu+vaQfl5Frg1HUK7Uwtq2czC8v4EgGzZel2jtX2FFFOFrl8LnvulaTc9noQhOBTA5ouYGnCXjwnsZ3Q3k+ESH7HQn0O/s= 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=209.85.166.77 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-f77.google.com with SMTP id ca18e2360f4ac-7ea87fb4fdfso150225539f.1 for ; Mon, 27 May 2024 05:16:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716812185; x=1717416985; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=rrBiLoAdyCH10N5ozN0LOe9Z9wcZUeZXZWDt75VIcFo=; b=Cok/V5NF1Pren8ciCDFIsLqavcJfrXKACtg6X9JMl77K6anijPy2vWjNJ1ChD0MEYE 0icwjh+87La2tnBZ1nwTol1ywLuPxWhszPsAZ/QpC15MmBFSIOd2+pJ6OXnWc1rEkBFJ rFtpYRVEonY9tecfBO8Wk7qLJuXQ67zPzTlnoQg6lR1cIIgrDhKlp+ZIU93DCQv9Iumu nB8PFQh78PoxLX1YYuRCTfhN85nEU2MLv3srqfwSJpvRamu5jw/6T4x2G3/9P6upjdwr ZdS0LrbmOkzLofSqgbf5Fgdgacghlb4fpTQSBQlsgI8bYgS7ReGb8tkVxwq2thg/RaT8 94OA== X-Forwarded-Encrypted: i=1; AJvYcCWzly6dx6UQslxe86rxdkF4c4VHqjptjyvZrDlI7RgYbhoHbuZtIa2bl+6bLsoT7xLp0oXgtADLoKkMtxzWfI6sIrEXaMgho3ldfUgH X-Gm-Message-State: AOJu0YxUVs14gakiEkoI9J0vLOW4o63BW7Wddt39Y1LUguLXHLCO0ypn QHdm02cxFOTycayU/e20DvemhPxFSpHVKs0FyI5beOwPRlJgueFhYjgIH8qEJXWCRMGJBDka1mh riz02cgzy1boYwnxIfO72/iHeN6ICpROEjTKiJKR0Da8tu3WdRvTehbE= X-Google-Smtp-Source: AGHT+IEbBn/QaySLifpjOdCpj35VHWfvoCsYrtjfXQWB00zO9FUs7RrTkgFqooyZMqp0llCXrixKB0gyVf01EwR74GbtBGJuN8Us Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:27c3:b0:7de:e506:e54a with SMTP id ca18e2360f4ac-7e8c6f10a40mr48872939f.3.1716812185684; Mon, 27 May 2024 05:16:25 -0700 (PDT) Date: Mon, 27 May 2024 05:16:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000795a2506196e7cd5@google.com> Subject: [syzbot] [pm?] INFO: trying to register non-static key in netdev_unregister_kobject From: syzbot To: gregkh@linuxfoundation.org, len.brown@intel.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, pavel@ucw.cz, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e67572cd2204 Linux 6.9-rc6 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15715640980000 kernel config: https://syzkaller.appspot.com/x/.config?x=d2f00edef461175 dashboard link: https://syzkaller.appspot.com/bug?extid=27c3c57b78da2a0995d8 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=152ab240980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13274a87180000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7ece3eebb82c/disk-e67572cd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/81b1e26c57c9/vmlinux-e67572cd.xz kernel image: https://storage.googleapis.com/syzbot-assets/be9561f066e4/bzImage-e67572cd.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/825a80609ef9/mount_4.gz Bisection is inconclusive: the issue happens on the oldest tested release. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1526f2a7180000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1726f2a7180000 console output: https://syzkaller.appspot.com/x/log.txt?x=1326f2a7180000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+27c3c57b78da2a0995d8@syzkaller.appspotmail.com INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 PID: 5076 Comm: kbnepd bnep0 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 assign_lock_key+0x238/0x270 kernel/locking/lockdep.c:976 register_lock_class+0x1cf/0x980 kernel/locking/lockdep.c:1289 __lock_acquire+0xda/0x1fd0 kernel/locking/lockdep.c:5014 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228 netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106 unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11135 unregister_netdevice_many net/core/dev.c:11163 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11042 unregister_netdevice include/linux/netdevice.h:3115 [inline] unregister_netdev+0x1c/0x30 net/core/dev.c:11181 bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ================================================================== BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x299/0x370 kernel/locking/spinlock_debug.c:115 Read of size 4 at addr ffff88801b70970c by task kbnepd bnep0/5076 CPU: 1 PID: 5076 Comm: kbnepd bnep0 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x299/0x370 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline] _raw_spin_lock_irq+0xdf/0x120 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228 netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106 unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11135 unregister_netdevice_many net/core/dev.c:11163 [inline] unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11042 unregister_netdevice include/linux/netdevice.h:3115 [inline] unregister_netdev+0x1c/0x30 net/core/dev.c:11181 bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 4524: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3798 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_node+0x194/0x380 mm/slub.c:3888 kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:577 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:668 netlink_sendmsg+0x637/0xcb0 net/netlink/af_netlink.c:1880 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5097: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2106 [inline] slab_free mm/slub.c:4280 [inline] kmem_cache_free+0x10b/0x2c0 mm/slub.c:4344 skb_kfree_head net/core/skbuff.c:1094 [inline] skb_free_head net/core/skbuff.c:1108 [inline] skb_release_data+0x556/0x870 net/core/skbuff.c:1136 skb_release_all net/core/skbuff.c:1202 [inline] __kfree_skb net/core/skbuff.c:1216 [inline] consume_skb+0xb3/0x160 net/core/skbuff.c:1432 netlink_recvmsg+0x60a/0x11d0 net/netlink/af_netlink.c:1983 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1068 ____sys_recvmsg+0x1db/0x470 net/socket.c:2803 ___sys_recvmsg net/socket.c:2845 [inline] __sys_recvmsg+0x2f0/0x3e0 net/socket.c:2875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88801b709500 which belongs to the cache skbuff_small_head of size 640 The buggy address is located 524 bytes inside of freed 640-byte region [ffff88801b709500, ffff88801b709780) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b708 head: order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff80000000840(slab|head|node=0|zone=1|lastcpupid=0xfff) page_type: 0xffffffff() raw: 00fff80000000840 ffff888019695a00 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080150015 00000001ffffffff 0000000000000000 head: 00fff80000000840 ffff888019695a00 dead000000000122 0000000000000000 head: 0000000000000000 0000000080150015 00000001ffffffff 0000000000000000 head: 00fff80000000002 ffffea00006dc201 dead000000000122 00000000ffffffff head: 0000000400000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5097, tgid 64786829 (udevd), ts 5097, free_ts 60180817158 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534 prep_new_page mm/page_alloc.c:1541 [inline] get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317 __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2175 allocate_slab mm/slub.c:2338 [inline] new_slab+0x84/0x2f0 mm/slub.c:2391 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmem_cache_alloc_node+0x24a/0x380 mm/slub.c:3888 kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:577 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:668 netlink_sendmsg+0x637/0xcb0 net/netlink/af_netlink.c:1880 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5063 tgid 5063 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x97b/0xaa0 mm/page_alloc.c:2347 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487 __folio_put_large+0x168/0x1d0 mm/swap.c:132 __folio_put+0x299/0x390 mm/swap.c:140 folio_put include/linux/mm.h:1508 [inline] free_large_kmalloc+0x105/0x1c0 mm/slub.c:4361 kfree+0x1ca/0x3a0 mm/slub.c:4384 hci_release_dev+0x1516/0x16a0 net/bluetooth/hci_core.c:2833 bt_host_release+0x83/0x90 net/bluetooth/hci_sysfs.c:94 device_release+0x99/0x1c0 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22f/0x480 lib/kobject.c:737 vhci_release+0x8b/0xd0 drivers/bluetooth/hci_vhci.c:675 __fput+0x429/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa1b/0x27e0 kernel/exit.c:878 do_group_exit+0x207/0x2c0 kernel/exit.c:1027 __do_sys_exit_group kernel/exit.c:1038 [inline] __se_sys_exit_group kernel/exit.c:1036 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1036 Memory state around the buggy address: ffff88801b709600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801b709680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88801b709700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801b709780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88801b709800: fa 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection 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