IPVS: ftp: loaded support on port[0] = 21
watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.2:22540]
Modules linked in:
irq event stamp: 255487
hardirqs last  enabled at (255486): [<ffffffff81549445>] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
hardirqs last  enabled at (255486): [<ffffffff81549445>] read_seqcount_begin include/linux/seqlock.h:164 [inline]
hardirqs last  enabled at (255486): [<ffffffff81549445>] ktime_get+0x235/0x2f0 kernel/time/timekeeping.c:756
hardirqs last disabled at (255487): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (0): [<ffffffff81370d39>] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856
softirqs last disabled at (18): [<ffffffff86766bf2>] __dev_queue_xmit+0x1e2/0x2e00 net/core/dev.c:3773
CPU: 1 PID: 22540 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cake_heap_get_backlog net/sched/sch_cake.c:1369 [inline]
RIP: 0010:cake_heapify+0x1a6/0x340 net/sched/sch_cake.c:1383
Code: 44 54 08 41 0f b7 54 54 08 83 e0 07 48 69 c0 d8 98 01 00 66 c1 ea 03 49 03 44 24 10 81 e2 ff 03 00 00 48 8d bc 90 00 40 01 00 <48> 89 f9 48 c1 e9 03 42 0f b6 34 39 48 89 f9 83 e1 07 83 c1 03 40
RSP: 0018:ffff88804e007630 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffff88804dc4cbc8 RBX: 0000000000000464 RCX: 0000000000000000
RDX: 000000000000008c RSI: ffffffff86985d0c RDI: ffff88804dc60df8
RBP: 0000000000000231 R08: ffffffff8c665058 R09: 0000000000001fff
R10: 0000000000000005 R11: ffffffff8c66505b R12: ffff88804e350dc0
R13: 0000000000000463 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f9599ab5700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9599ab5718 CR3: 00000000af9f4000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cake_drop net/sched/sch_cake.c:1472 [inline]
 cake_enqueue+0x1296/0x33d0 net/sched/sch_cake.c:1848
 __dev_xmit_skb net/core/dev.c:3494 [inline]
 __dev_queue_xmit+0x140a/0x2e00 net/core/dev.c:3807
 __netlink_deliver_tap_skb net/netlink/af_netlink.c:303 [inline]
 __netlink_deliver_tap net/netlink/af_netlink.c:321 [inline]
 netlink_deliver_tap+0x8fb/0xb00 net/netlink/af_netlink.c:334
 netlink_deliver_tap_kernel net/netlink/af_netlink.c:343 [inline]
 netlink_unicast_kernel net/netlink/af_netlink.c:1324 [inline]
 netlink_unicast+0x545/0x690 net/netlink/af_netlink.c:1351
 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:661
 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227
 __sys_sendmsg net/socket.c:2265 [inline]
 __do_sys_sendmsg net/socket.c:2274 [inline]
 __se_sys_sendmsg net/socket.c:2272 [inline]
 __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f959b1a30e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9599ab5168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f959b2b61d0 RCX: 00007f959b1a30e9
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007f959b1fd08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe531b521f R14: 00007f9599ab5300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
----------------
Code disassembly (best guess):
   0:	44 54                	rex.R push %rsp
   2:	08 41 0f             	or     %al,0xf(%rcx)
   5:	b7 54                	mov    $0x54,%bh
   7:	54                   	push   %rsp
   8:	08 83 e0 07 48 69    	or     %al,0x694807e0(%rbx)
   e:	c0 d8 98             	rcr    $0x98,%al
  11:	01 00                	add    %eax,(%rax)
  13:	66 c1 ea 03          	shr    $0x3,%dx
  17:	49 03 44 24 10       	add    0x10(%r12),%rax
  1c:	81 e2 ff 03 00 00    	and    $0x3ff,%edx
  22:	48 8d bc 90 00 40 01 	lea    0x14000(%rax,%rdx,4),%rdi
  29:	00
* 2a:	48 89 f9             	mov    %rdi,%rcx <-- trapping instruction
  2d:	48 c1 e9 03          	shr    $0x3,%rcx
  31:	42 0f b6 34 39       	movzbl (%rcx,%r15,1),%esi
  36:	48 89 f9             	mov    %rdi,%rcx
  39:	83 e1 07             	and    $0x7,%ecx
  3c:	83 c1 03             	add    $0x3,%ecx
  3f:	40                   	rex