__dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc_node mm/slab.c:3297 [inline]
 kmem_cache_alloc_node+0x54/0x410 mm/slab.c:3640
 __alloc_skb+0x5c/0x510 net/core/skbuff.c:193
general protection fault: 0000 [#1] PREEMPT SMP KASAN
 alloc_skb include/linux/skbuff.h:980 [inline]
 bt_skb_alloc include/net/bluetooth/bluetooth.h:336 [inline]
 ll_recv+0x590/0x1820 drivers/bluetooth/hci_ll.c:516
Modules linked in:
CPU: 1 PID: 12473 Comm: kworker/u4:7 Not tainted 4.14.231-syzkaller #0
 hci_uart_tty_receive+0x1ec/0x4c0 drivers/bluetooth/hci_ldisc.c:617
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
 tiocsti drivers/tty/tty_io.c:2186 [inline]
 tty_ioctl+0xe5a/0x13c0 drivers/tty/tty_io.c:2572
task: ffff8880a8bc42c0 task.stack: ffff88803ba78000
RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2045 [inline]
RIP: 0010:skb_put+0x29/0x170 net/core/skbuff.c:1703
RSP: 0018:ffff88803ba7fb90 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 1ffffffff10746a5
RDX: 000000000000001a RSI: 0000000000000002 RDI: 00000000000000d0
RBP: 0000000000000000 R08: ffffffff8b9bfc90 R09: 0000000000050a76
R10: ffff8880a8bc4be8 R11: ffff8880a8bc42c0 R12: 0000000000000002
R13: dffffc0000000000 R14: ffff888097bea580 R15: ffff88809e83e4e0
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f94c1a1c718 CR3: 000000004acdd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_put_data include/linux/skbuff.h:2125 [inline]
 ll_recv+0x6e9/0x1820 drivers/bluetooth/hci_ll.c:416
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 hci_uart_tty_receive+0x1ec/0x4c0 drivers/bluetooth/hci_ldisc.c:617
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 tty_ldisc_receive_buf+0x12e/0x170 drivers/tty/tty_buffer.c:459
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
 tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
RIP: 0033:0x466459
 receive_buf drivers/tty/tty_buffer.c:475 [inline]
 flush_to_ldisc+0x1dd/0x3f0 drivers/tty/tty_buffer.c:527
RSP: 002b:00007fd632281188 EFLAGS: 00000246
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 00000000200000c0 RSI: 0000000000005412 RDI: 0000000000000003
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
RBP: 00007fd6322811d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff6a0028cf R14: 00007fd632281300 R15: 0000000000022000
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 00 00 41 55 41 54 41 89 f4 55 48 89 fd 53 e8 6f 1c 97 fb 48 8d bd d0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 24 01 00 00 48 8d bd c8 00 00 00 4c 8b ad d0 
RIP: skb_tail_pointer include/linux/skbuff.h:2045 [inline] RSP: ffff88803ba7fb90
RIP: skb_put+0x29/0x170 net/core/skbuff.c:1703 RSP: ffff88803ba7fb90
Bluetooth: hci10 sending frame failed (-49)
audit: type=1804 audit(1618754148.712:1055): pid=29318 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.1" name="/root/syzkaller-testdir337690364/syzkaller.DrgcMs/578/file0/bus" dev="ramfs" ino=85997 res=1
audit: type=1804 audit(1618754148.732:1056): pid=29306 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir337690364/syzkaller.DrgcMs/578/file0/file0/bus" dev="ramfs" ino=86002 res=1
Bluetooth: Can't allocate mem for new packet
---[ end trace a9c6a5a1f74bf477 ]---