rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=e22c/1/0x4000000000000000 softirq=14072/14072 fqs=4813
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   936600          0            0
rcu: 	cputime:    24301      28188           94   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=6969 q=3553 ncpus=2)
CPU: 0 UID: 0 PID: 5933 Comm: syz.0.13 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #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:rcu_read_unlock_special+0x87/0x4c0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 62 2c f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900000075a0 EFLAGS: 00000206
RAX: bebff17a5cd62000 RBX: 1ffff92000000ebc RCX: bebff17a5cd62000
RDX: 0000000000000000 RSI: ffffffff8d99883e RDI: ffffffff8be29f40
RBP: ffffc90000007698 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
FS:  00007f9dc16a16c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000200 CR3: 000000002520e000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 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
 kmem_cache_free+0x18f/0x400
 dst_destroy+0x235/0x350
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:get_stack_info_noinstr+0x6/0x130
Code: e0 49 00 00 65 c6 05 c2 b6 31 07 00 eb 9a cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 41 57 <41> 56 41 55 41 54 53 49 89 d6 49 89 f4 49 89 ff e8 25 01 00 00 b3
RSP: 0018:ffffc90003a2f888 EFLAGS: 00000282
RAX: 1ffff92000745f2c RBX: ffffc90003a2f948 RCX: ffffc90003a2f948
RDX: ffffc90003a2f928 RSI: ffff88810c873980 RDI: ffffc90003a2f8c8
RBP: ffffc90003a2f901 R08: ffffc90003a2f987 R09: 0000000000000000
R10: ffffc90003a2f928 R11: fffff52000745f31 R12: ffffc90003a2f8c8
R13: ffffc90003a2f948 R14: ffffc90003a2f928 R15: ffff88810c873980
 get_stack_info+0x3b/0xf0
 __unwind_start+0x43f/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 ref_tracker_alloc+0x17d/0x460
 sk_alloc+0x1b1/0x370
 tipc_sk_create+0x164/0x28e0
 __sock_create+0x4b3/0x9f0
 __sys_socketpair+0x23a/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9dc078e9a9
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:00007f9dc16a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f9dc09b6080 RCX: 00007f9dc078e9a9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001e
RBP: 00007f9dc0810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9dc09b6080 R15: 00007fff0da14848
 </TASK>
sched: DL replenish lagged too much
