divide error: 0000 [#1] SMP KASAN
CPU: 0 PID: 31140 Comm: trinity-c12 Not tainted 4.14.0-rc6-think+ #1
task: ffff8803c0d08040 task.stack: ffff8803df548000
RIP: 0010:__tcp_select_window+0x21f/0x400
RSP: 0018:ffff8803df54f418 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff880458fd3140 RCX: ffffffff82120ea5
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff880458fd3a88
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000098968
R13: 1ffff1007bea9e87 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f76da1db700(0000) GS:ffff88046ae00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000003f67cd002 CR4: 00000000001606f0
DR0: 00007f76d819f000 DR1: 00007f75a29f5000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
? tcp_schedule_loss_probe+0x270/0x270
? lock_acquire+0x12e/0x350
? tcp_recvmsg+0x124/0x1430
? lock_release+0x890/0x890
? do_raw_spin_trylock+0x100/0x100
? do_raw_spin_trylock+0x40/0x100
tcp_cleanup_rbuf+0x27d/0x2a0
? tcp_recv_skb+0x180/0x180
? mark_held_locks+0x70/0xa0
? __local_bh_enable_ip+0x60/0x90
tcp_recvmsg+0x7a9/0x1430
? tcp_recv_timestamp+0x250/0x250
? __free_insn_slot+0x390/0x390
? rcu_is_watching+0x88/0xd0
? entry_SYSCALL64_slow_path+0x25/0x25
? is_bpf_text_address+0x86/0xf0
? kernel_text_address+0xec/0x100
? __kernel_text_address+0xe/0x30
? unwind_get_return_address+0x2f/0x50
? __save_stack_trace+0x92/0x100
? memcmp+0x45/0x70
? match_held_lock+0x93/0x410
? save_trace+0x1c0/0x1c0
? save_stack+0x89/0xb0
? save_stack+0x32/0xb0
? kasan_kmalloc+0xa0/0xd0
? native_sched_clock+0xf9/0x1a0
? rw_copy_check_uvector+0x15e/0x180
inet_recvmsg+0x10b/0x360
? inet_create+0x770/0x770
? sched_clock_cpu+0x14/0xf0
? sched_clock_cpu+0x14/0xf0
sock_read_iter+0x19d/0x240
? sock_recvmsg+0x60/0x60
do_iter_readv_writev+0x2e4/0x320
? vfs_dedupe_file_range+0x3e0/0x3e0
do_iter_read+0x149/0x280
vfs_readv+0x107/0x180
? compat_rw_copy_check_uvector+0x1d0/0x1d0
? fget_raw+0x10/0x10
? __lock_is_held+0x2e/0xd0
? do_preadv+0xf0/0xf0
? __fdget_pos+0x82/0x110
? __fdget_raw+0x10/0x10
? do_readv+0xc0/0x1b0
do_readv+0xc0/0x1b0
? vfs_readv+0x180/0x180
? mark_held_locks+0x1b/0xa0
? do_syscall_64+0xae/0x400
? do_preadv+0xf0/0xf0
do_syscall_64+0x182/0x400
? syscall_return_slowpath+0x270/0x270
? rcu_read_lock_sched_held+0x90/0xa0
? __context_tracking_exit.part.4+0x223/0x290
? mark_held_locks+0x1b/0xa0
? return_from_SYSCALL_64+0x2d/0x7a
? trace_hardirqs_on_caller+0x17a/0x250
? trace_hardirqs_on_thunk+0x1a/0x1c
entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:0x7f76d9b05219
RSP: 002b:00007ffd41fd30d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000013
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007f76d9b05219
RDX: 0000000000000016 RSI: 00005611ca731c70 RDI: 0000000000000179
RBP: 00007ffd41fd3180 R08: 0000000000a07395 R09: 0000000a10d65a68
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f76da180058 R14: 00007f76da1db698 R15: 00007f76da180000
Code: 41 5e 41 5f c3 48 8d bb 48 09 00 00 e8 4b 2b 30 ff 8b 83 48 09 00 00 89
ea 44 29 f2 39 c2 7d 08 39 c5 0f 8d 86 01 00 00 89 e8 99 <41> f7 fe 89 e8 29 d0
eb 8c 41 f7 df 48 89 c7 44 89 f9 d3 fd e8
RIP: __tcp_select_window+0x21f/0x400 RSP: ffff8803df54f418
window = rounddown(free_space, mss);
45ec: 89 e8 mov %ebp,%eax
45ee: 99 cltd
45ef: 41 f7 fe idiv %r14d
45f2: 89 e8 mov %ebp,%eax
45f4: 29 d0 sub %edx,%eax
45f6: eb 8c jmp 4584 <__tcp_select_window+0x1b4>
45f8: 41 f7 df neg %r15d
