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+0x138/0x19c lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold+0x10f/0x159 lib/fault-inject.c:149 should_failslab+0xdb/0x130 mm/failslab.c:32 general protection fault: 0000 [#1] PREEMPT SMP KASAN slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3297 [inline] kmem_cache_alloc_node+0x56/0x780 mm/slab.c:3640 Modules linked in: CPU: 0 PID: 7497 Comm: kworker/u4:6 Not tainted 4.14.129 #23 __alloc_skb+0x9c/0x500 net/core/skbuff.c:193 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc alloc_skb include/linux/skbuff.h:980 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:336 [inline] ll_recv+0x3cf/0x1010 drivers/bluetooth/hci_ll.c:516 hci_uart_tty_receive+0x1f4/0x4d0 drivers/bluetooth/hci_ldisc.c:603 task: ffff888093a36540 task.stack: ffff88805e630000 RIP: 0010:skb_put+0x31/0x1c0 net/core/skbuff.c:1694 RSP: 0018:ffff88805e637b48 EFLAGS: 00010202 tiocsti drivers/tty/tty_io.c:2186 [inline] tty_ioctl+0xded/0x1320 drivers/tty/tty_io.c:2572 RAX: dffffc0000000000 RBX: ffff88808b46aac0 RCX: ffff888081744300 RDX: 0000000000000019 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffff88805e637b70 R08: 000000000000379c R09: ffffffff88c94120 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x7ae/0x1060 fs/ioctl.c:684 R10: 0000000000000006 R11: ffff888093a36540 R12: 0000000000000000 R13: 0000000000000003 R14: ffff88808d6036e0 R15: 00000000000000c8 FS: 0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e44c0e000 CR3: 000000009f940000 CR4: 00000000001406f0 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 Call Trace: entry_SYSCALL_64_after_hwframe+0x42/0xb7 skb_put_data include/linux/skbuff.h:2079 [inline] ll_recv+0x501/0x1010 drivers/bluetooth/hci_ll.c:416 RIP: 0033:0x4592c9 RSP: 002b:00007f3f7c60bc78 EFLAGS: 00000246 hci_uart_tty_receive+0x1f4/0x4d0 drivers/bluetooth/hci_ldisc.c:603 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3f7c60bc90 RCX: 00000000004592c9 RDX: 0000000020000080 RSI: 0000000000005412 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 tty_ldisc_receive_buf+0x14d/0x1a0 drivers/tty/tty_buffer.c:459 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f7c60c6d4 R13: 00000000004c3ace R14: 00000000004d7610 R15: 0000000000000004 Bluetooth: Can't allocate mem for new packet tty_port_default_receive_buf+0x73/0xa0 drivers/tty/tty_port.c:37 kobject: 'loop5' (ffff8880a4ae6a60): fill_kobj_path: path = '/devices/virtual/block/loop5' 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 kobject: 'loop5' (ffff8880a4ae6a60): kobject_uevent_env e8 b0 fc 8e fc 4c 89 fa 48 b8 kobject: 'loop5' (ffff8880a4ae6a60): fill_kobj_path: path = '/devices/virtual/block/loop5' 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: ffff88805e637b48 kobject: 'loop5' (ffff8880a4ae6a60): kobject_uevent_env EXT4-fs (loop5): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock kobject: 'loop5' (ffff8880a4ae6a60): fill_kobj_path: path = '/devices/virtual/block/loop5' EXT4-fs (loop5): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock ---[ end trace e9fcc4cd5fb94e8c ]--- EXT4-fs (loop5): ext4_check_descriptors: Inode table for group 0 overlaps superblock kobject: 'loop3' (ffff8880a4a500e0): kobject_uevent_env kobject: 'loop3' (ffff8880a4a500e0): kobject_uevent_env