EXT4-fs (loop4): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock
EXT4-fs (loop4): ext4_check_descriptors: Inode table for group 0 overlaps superblock
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 362 Comm: kworker/u4:3 Not tainted 4.14.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
task: ffff8880a9138040 task.stack: ffff8880a9140000
RIP: 0010:skb_put+0x31/0x1c0 net/core/skbuff.c:1694
RSP: 0018:ffff8880a9147b48 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880821f1b80 RCX: ffff888099a180c0
RDX: 0000000000000019 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffff8880a9147b70 R08: 0000000000000001 R09: ffff8880a9147948
R10: 0000000000000006 R11: ffff8880a9138040 R12: 0000000000000000
R13: 0000000000000004 R14: ffff8880a0373b60 R15: 00000000000000c8
FS:  0000000000000000(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f94566bb518 CR3: 0000000042a5b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_put_data include/linux/skbuff.h:2095 [inline]
 ll_recv+0x501/0x1010 drivers/bluetooth/hci_ll.c:416
 hci_uart_tty_receive+0x1f4/0x4d0 drivers/bluetooth/hci_ldisc.c:616
 tty_ldisc_receive_buf+0x14d/0x1a0 drivers/tty/tty_buffer.c:459
 tty_port_default_receive_buf+0x73/0xa0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:475 [inline]
 flush_to_ldisc+0x1ec/0x400 drivers/tty/tty_buffer.c:527
 process_one_work+0x863/0x1600 kernel/workqueue.c:2114
 worker_thread+0x5d9/0x1050 kernel/workqueue.c:2248
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 41 56 41 55 41 89 f5 41 54 49 89 fc 4d 8d bc 24 c8 00 00 00 53 e8 80 f0 46 fc 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 
RIP: skb_put+0x31/0x1c0 net/core/skbuff.c:1694 RSP: ffff8880a9147b48
[EXT4 FS bs=2048, gc=1, bpg=16384, ipg=128, mo=e002c01c, mo2=0002]
System zones: 0-7, 112-112
kobject: 'loop4' (ffff8880265dc348): kobject_add_internal: parent: 'ext4', set: 'ext4'
EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
kobject: 'loop4' (ffff8880265dc348): kobject_cleanup, parent           (null)
kobject: 'loop4' (ffff8880265dc348): calling ktype release
kobject: 'loop4': free name
kobject: 'loop5' (ffff8880a42160e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a42160e0): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff888051a2d760): kobject_uevent_env
kobject: 'loop0' (ffff888051a2d760): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (ffff8880a41bf1a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a41bf1a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (ffff8880a41bf1a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a41bf1a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
audit: type=1400 audit(1577336552.257:107): avc:  denied  { map } for  pid=11962 comm="syz-executor.5" path="/dev/fuse" dev="devtmpfs" ino=38 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fuse_device_t:s0 tclass=chr_file permissive=1
kobject: 'loop4' (ffff8880a41bf1a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a41bf1a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a42160e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a42160e0): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a41bf1a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a41bf1a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop4' (ffff8880a41bf1a0): kobject_uevent_env
kobject: 'loop5' (ffff8880a42160e0): kobject_uevent_env
kobject: 'loop4' (ffff8880a41bf1a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a42160e0): fill_kobj_path: path = '/devices/virtual/block/loop5'
---[ end trace 200a75bb34e9ca25 ]---