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 CPU: 1 PID: 20506 Comm: kworker/u4:9 Not tainted 4.19.205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2048 [inline] RIP: 0010:skb_put+0x2b/0x190 net/core/skbuff.c:1706 Code: 56 41 55 41 54 41 89 f4 55 48 89 fd 53 e8 fd 43 f2 fa 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 43 01 00 00 48 8d bd c8 00 00 00 4c 8b ad d0 00 RSP: 0018:ffff88803d9e7ad8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888092726780 RCX: ffffffff85d23c50 RDX: 000000000000001a RSI: ffffffff86704ec3 RDI: 00000000000000d0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000000db R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 000000000000000a R14: ffff888092726878 R15: ffff8880927268dc FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30221000 CR3: 000000008f4dd000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_put_data include/linux/skbuff.h:2128 [inline] bcsp_unslip_one_byte drivers/bluetooth/hci_bcsp.c:451 [inline] bcsp_recv+0x948/0x1550 drivers/bluetooth/hci_bcsp.c:613 hci_uart_tty_receive+0x221/0x530 drivers/bluetooth/hci_ldisc.c:621 tty_ldisc_receive_buf+0x14a/0x190 drivers/tty/tty_buffer.c:460 tty_port_default_receive_buf+0x78/0xa0 drivers/tty/tty_port.c:38 receive_buf drivers/tty/tty_buffer.c:476 [inline] flush_to_ldisc+0x21f/0x390 drivers/tty/tty_buffer.c:528 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: Bluetooth: Can't allocate mem for new packet ---[ end trace 1488028beead9b98 ]--- RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2048 [inline] RIP: 0010:skb_put+0x2b/0x190 net/core/skbuff.c:1706 Code: 56 41 55 41 54 41 89 f4 55 48 89 fd 53 e8 fd 43 f2 fa 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 43 01 00 00 48 8d bd c8 00 00 00 4c 8b ad d0 00 RSP: 0018:ffff88803d9e7ad8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888092726780 RCX: ffffffff85d23c50 RDX: 000000000000001a RSI: ffffffff86704ec3 RDI: 00000000000000d0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000000db team0: Device ipvlan1 is VLAN challenged and team device has VLAN set up R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: 000000000000000a R14: ffff888092726878 R15: ffff8880927268dc FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff83feec20 CR3: 00000000475de000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 56 push %rsi 1: 41 55 push %r13 3: 41 54 push %r12 5: 41 89 f4 mov %esi,%r12d 8: 55 push %rbp 9: 48 89 fd mov %rdi,%rbp c: 53 push %rbx d: e8 fd 43 f2 fa callq 0xfaf2440f 12: 48 8d bd d0 00 00 00 lea 0xd0(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 43 01 00 00 jne 0x177 34: 48 8d bd c8 00 00 00 lea 0xc8(%rbp),%rdi 3b: 4c rex.WR 3c: 8b .byte 0x8b 3d: ad lods %ds:(%rsi),%eax 3e: d0 00 rolb (%rax)