rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=7e2c/1/0x4000000000000000 softirq=13968/13969 fqs=4616
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1041535          0            0
rcu: 	cputime:    24078      28401           83   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=5865 q=2548 ncpus=2)
CPU: 0 UID: 0 PID: 5965 Comm: syz.2.36 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:unwind_next_frame+0x0/0x2390
Code: 09 cc 89 d9 80 e1 07 80 c1 03 38 c1 7c 92 48 89 df e8 04 97 b0 00 eb 88 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 81 ec 98 00 00 00 49
RSP: 0018:ffffc900000078a0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90000007960 RCX: f72e01f57b954100
RDX: dffffc0000000000 RSI: ffffffff894b992b RDI: ffffc900000078a8
RBP: ffffc90000007930 R08: ffffc90000007970 R09: 0000000000000012
R10: dffffc0000000000 R11: ffffffff81acf520 R12: ffff88810aa71cc0
R13: ffffffff81a8b724 R14: ffffffff81acf520 R15: ffffc900000078a8
FS:  00007f250ebe76c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe57d4a8fc8 CR3: 00000000291f8000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 slab_free_after_rcu_debug+0x129/0x2a0
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 do_softirq+0xec/0x180
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0
 mptcp_pm_nl_set_limits_doit+0x444/0x560
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x75c/0x8e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f250dd8eb69
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f250ebe7038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f250dfb5fa0 RCX: 00007f250dd8eb69
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 000000000000000b
RBP: 00007f250de11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f250dfb5fa0 R15: 00007fff4f64af48
 </TASK>
sched: DL replenish lagged too much
