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: 0 PID: 17396 Comm: syz-executor.4 Not tainted 4.19.190-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:728 [inline] register_lock_class+0xe82/0x11c0 kernel/locking/lockdep.c:754 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304 IPv6: ADDRCONF(NETDEV_UP): vlan3: link is not ready lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:152 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2834 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2872 l2cap_chan_del+0x690/0xa50 net/bluetooth/l2cap_core.c:637 l2cap_chan_close+0x1b5/0x950 net/bluetooth/l2cap_core.c:757 l2cap_sock_shutdown+0x339/0xe10 net/bluetooth/l2cap_sock.c:1159 l2cap_sock_release+0x77/0x290 net/bluetooth/l2cap_sock.c:1202 __sock_release+0xcd/0x2a0 net/socket.c:579 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41940b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fffe79dab60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: ffffffffffffffbc RSI: 0000000008c9f4bf RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2de22130 R10: 00007fffe79dac50 R11: 0000000000000293 R12: 00000000000581ba R13: 00000000000003e8 R14: 000000000056bf60 R15: 00000000000581b8 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. IPv6: ADDRCONF(NETDEV_UP): vlan3: link is not ready netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. ptrace attach of "/root/syz-executor.4"[17654] was attempted by "/root/syz-executor.4"[17655] ptrace attach of "/root/syz-executor.4"[17691] was attempted by "/root/syz-executor.4"[17700] ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: Microsoft Joliet Level 0 ptrace attach of "/root/syz-executor.4"[17757] was attempted by "/root/syz-executor.4"[17763] ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: Microsoft Joliet Level 0 binder: 17993:17995 ioctl c018620b 20000740 returned -14 netlink: 'syz-executor.4': attribute type 1 has an invalid length. nla_parse: 7 callbacks suppressed netlink: 119 bytes leftover after parsing attributes in process `syz-executor.4'. binder: 18009:18017 ioctl c018620b 20000740 returned -14 binder: 18025:18028 ioctl c018620b 20000740 returned -14 binder: 18036:18039 ioctl c018620b 20000740 returned -14 netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 119 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 119 bytes leftover after parsing attributes in process `syz-executor.4'. xt_CHECKSUM: CHECKSUM should be avoided. If really needed, restrict with "-p udp" and only use in OUTPUT x_tables: ip6_tables: rpfilter match: used from hooks FORWARD, but only valid from PREROUTING Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18201, addr=000000008adbf40e). netlink: 'syz-executor.4': attribute type 1 has an invalid length. Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18201, addr=000000008adbf40e). netlink: 119 bytes leftover after parsing attributes in process `syz-executor.4'. Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18201, addr=000000008adbf40e). Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18239, addr=000000008adbf40e). EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop2): ext4_empty_dir:2769: inode #12: block 255: comm syz-executor.2: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0, size=1024 netlink: 'syz-executor.4': attribute type 1 has an invalid length. Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18258, addr=000000008adbf40e). netlink: 119 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs warning (device loop2): ext4_empty_dir:2772: inode #12: comm syz-executor.2: directory missing '.' Possible attack attempt. Unexpected rseq signature 0x0, expecting 0x7 (pid=18271, addr=000000008adbf40e). EXT4-fs error (device loop2): ext4_validate_block_bitmap:392: comm syz-executor.2: bg 0: block 3: invalid block bitmap EXT4-fs error (device loop2) in ext4_free_blocks:4972: Corrupt filesystem EXT4-fs error (device loop2): ext4_free_inode:350: comm syz-executor.2: bit already cleared for inode 12 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop2): ext4_empty_dir:2769: inode #12: block 255: comm syz-executor.2: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0, size=1024 EXT4-fs warning (device loop2): ext4_empty_dir:2772: inode #12: comm syz-executor.2: directory missing '.' EXT4-fs error (device loop2): ext4_validate_block_bitmap:392: comm syz-executor.2: bg 0: block 3: invalid block bitmap EXT4-fs error (device loop2) in ext4_free_blocks:4972: Corrupt filesystem EXT4-fs error (device loop2): ext4_free_inode:350: comm syz-executor.2: bit already cleared for inode 12 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs error (device loop2): ext4_empty_dir:2769: inode #12: block 255: comm syz-executor.2: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0, size=1024 EXT4-fs warning (device loop2): ext4_empty_dir:2772: inode #12: comm syz-executor.2: directory missing '.' EXT4-fs error (device loop2): ext4_validate_block_bitmap:392: comm syz-executor.2: bg 0: block 3: invalid block bitmap EXT4-fs error (device loop2) in ext4_free_blocks:4972: Corrupt filesystem EXT4-fs error (device loop2): ext4_free_inode:350: comm syz-executor.2: bit already cleared for inode 12 overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue syz-executor.5 (18415): /proc/18411/oom_adj is deprecated, please use /proc/18411/oom_score_adj instead. EXT4-fs error (device loop2): ext4_empty_dir:2769: inode #12: block 255: comm syz-executor.2: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, name_len=0, size=1024 EXT4-fs warning (device loop2): ext4_empty_dir:2772: inode #12: comm syz-executor.2: directory missing '.' EXT4-fs error (device loop2): ext4_validate_block_bitmap:392: comm syz-executor.2: bg 0: block 3: invalid block bitmap EXT4-fs error (device loop2) in ext4_free_blocks:4972: Corrupt filesystem EXT4-fs error (device loop2): ext4_free_inode:350: comm syz-executor.2: bit already cleared for inode 12