INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 9600 Comm: syz-executor.0 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 register_lock_class+0x32b/0x1320 kernel/locking/lockdep.c:768 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 skb_dequeue+0x1c/0x180 net/core/skbuff.c:2831 skb_queue_purge+0x21/0x30 net/core/skbuff.c:2869 l2cap_chan_del+0x56d/0x950 net/bluetooth/l2cap_core.c:637 l2cap_chan_close+0x103/0x870 net/bluetooth/l2cap_core.c:757 l2cap_sock_shutdown+0x2e7/0xc20 net/bluetooth/l2cap_sock.c:1160 l2cap_sock_release+0x77/0x280 net/bluetooth/l2cap_sock.c:1203 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x41940b RSP: 002b:00007ffce29409f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 000000000041940b RDX: ffffffffffffffbc RSI: 00000000089075c3 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2da21ed4 R10: 00007ffce2940ae0 R11: 0000000000000293 R12: 0000000000027c68 R13: 00000000000003e8 R14: 000000000056bf60 R15: 0000000000027c60 EXT4-fs error (device sda1): mb_free_blocks:1464: group 9, inode 13954: block 296990:freeing already freed block (bit 2078); block bitmap corrupt. EXT4-fs error (device sda1): ext4_mb_generate_buddy:754: group 9, block bitmap and bg descriptor inconsistent: 30688 vs 30699 free clusters EXT4-fs (sda1): pa ffff888051a6baf8: logic 32768, phys. 296960, len 2048 EXT4-fs error (device sda1): ext4_mb_release_inode_pa:3891: group 9, free 2018, pa_free 2007 EXT4-fs error (device sda1): mb_free_blocks:1464: group 11, inode 13954: block 383006:freeing already freed block (bit 22558); block bitmap corrupt. EXT4-fs error (device sda1): ext4_mb_generate_buddy:754: group 11, block bitmap and bg descriptor inconsistent: 4066 vs 4077 free clusters EXT4-fs (sda1): pa ffff888051a6ba20: logic 32768, phys. 382976, len 2048 EXT4-fs error (device sda1): ext4_mb_release_inode_pa:3891: group 11, free 2018, pa_free 2007 EXT4-fs error (device sda1): mb_free_blocks:1464: group 12, inode 13956: block 397342:freeing already freed block (bit 4126); block bitmap corrupt. EXT4-fs (sda1): pa ffff888051a6b948: logic 32768, phys. 397312, len 2048 EXT4-fs (sda1): pa ffff888051a6b6c0: logic 32768, phys. 436224, len 2048 EXT4-fs (sda1): pa ffff888051a6b510: logic 32768, phys. 520192, len 2048 EXT4-fs (sda1): pa ffff888051a6b360: logic 32768, phys. 233472, len 2048 EXT4-fs (sda1): pa ffff888051a6b288: logic 32768, phys. 331776, len 2048 tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n EXT4-fs (sda1): pa ffff888051a19d28: logic 32768, phys. 292864, len 2048 EXT4-fs (sda1): pa ffff888051a19aa0: logic 32768, phys. 149504, len 2048 XFS (loop4): Invalid superblock magic number XFS (loop4): Invalid superblock magic number tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n tmpfs: Bad mount option o .lj9Sy ~ ;/'pG؂@EhH0uo0s^zL(A4ziK`psد!K?0|Co A/Wm͑n hid-generic 0000:0000:0000.0001: ignoring exceeding usage max hid-generic 0000:0000:0000.0001: hidraw0: HID v0.00 Device [syz1] on sz1 hid-generic 0000:0000:0000.0002: ignoring exceeding usage max hid-generic 0000:0000:0000.0002: hidraw0: HID v0.00 Device [syz1] on sz1 ISO 9660 Extensions: Microsoft Joliet Level 0 hid-generic 0000:0000:0000.0003: ignoring exceeding usage max hid-generic 0000:0000:0000.0003: hidraw0: HID v0.00 Device [syz1] on sz1 hid-generic 0000:0000:0000.0004: ignoring exceeding usage max hid-generic 0000:0000:0000.0004: hidraw0: HID v0.00 Device [syz1] on sz1 ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: Microsoft Joliet Level 0 hid-generic 0000:0000:0000.0005: ignoring exceeding usage max hid-generic 0000:0000:0000.0005: hidraw0: HID v0.00 Device [syz1] on sz1 ISO 9660 Extensions: Microsoft Joliet Level 0 hid-generic 0000:0000:0000.0006: ignoring exceeding usage max ISO 9660 Extensions: Microsoft Joliet Level 0 hid-generic 0000:0000:0000.0007: ignoring exceeding usage max hid-generic 0000:0000:0000.0006: hidraw0: HID v0.00 Device [syz1] on sz1 hid-generic 0000:0000:0000.0007: hidraw1: HID v0.00 Device [syz1] on sz1 ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: Microsoft Joliet Level 0 ISO 9660 Extensions: Microsoft Joliet Level 0 hid-generic 0000:0000:0000.0008: ignoring exceeding usage max hid-generic 0000:0000:0000.0008: hidraw0: HID v0.00 Device [syz1] on sz1 hid-generic 0000:0000:0000.0009: ignoring exceeding usage max hid-generic 0000:0000:0000.0009: hidraw0: HID v0.00 Device [syz1] on sz1 overlayfs: failed to resolve './file1': -40 ISO 9660 Extensions: Microsoft Joliet Level 0 overlayfs: failed to resolve './file1': -40 overlayfs: failed to resolve './file1': -40 hid-generic 0000:0000:0000.000A: ignoring exceeding usage max hid-generic 0000:0000:0000.000A: hidraw0: HID v0.00 Device [syz1] on sz1 ISO 9660 Extensions: Microsoft Joliet Level 0 overlayfs: failed to resolve './file1': -40 overlayfs: failed to resolve './file1': -40 invalid argument - start or stop time greater than 23:59:59 gfs2: Invalid superblock size invalid argument - start or stop time greater than 23:59:59 gfs2: Invalid superblock size invalid argument - start or stop time greater than 23:59:59 gfs2: Invalid superblock size ax25_connect(): syz-executor.0 uses autobind, please contact jreuter@yaina.de print_req_error: I/O error, dev loop5, sector 0 ax25_connect(): syz-executor.0 uses autobind, please contact jreuter@yaina.de invalid argument - start or stop time greater than 23:59:59 gfs2: Invalid superblock size ax25_connect(): syz-executor.0 uses autobind, please contact jreuter@yaina.de ax25_connect(): syz-executor.0 uses autobind, please contact jreuter@yaina.de invalid argument - start or stop time greater than 23:59:59 gfs2: Invalid superblock size delete_channel: no stack delete_channel: no stack overlayfs: workdir and upperdir must reside under the same mount audit: type=1326 audit(1620766976.329:4): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10334 comm="syz-executor.0" exe="/root/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0 audit: type=1326 audit(1620766977.149:5): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10334 comm="syz-executor.0" exe="/root/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0 audit: type=1326 audit(1620766977.239:6): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10404 comm="syz-executor.0" exe="/root/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0 audit: type=1326 audit(1620766977.300:7): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10414 comm="syz-executor.4" exe="/root/syz-executor.4" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0 audit: type=1326 audit(1620766977.560:8): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10435 comm="syz-executor.0" exe="/root/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0 overlayfs: workdir and upperdir must reside under the same mount audit: type=1326 audit(1620766977.590:9): auid=4294967295 uid=0 gid=0 ses=4294967295 pid=10433 comm="syz-executor.4" exe="/root/syz-executor.4" sig=9 arch=c000003e syscall=231 compat=0 ip=0x4665f9 code=0x0