rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=cf84/1/0x4000000000000000 softirq=13916/13916 fqs=4464
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1056002          0            0
rcu: 	cputime:    23429      29060           80   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=5673 q=1979 ncpus=2)
CPU: 0 UID: 0 PID: 5952 Comm: syz.2.27 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:vmalloc_to_page+0x46/0x6d0
Code: e8 6f a9 ad ff 48 c7 c0 78 90 24 8e 48 c1 e8 03 42 80 3c 28 00 74 0c 48 c7 c7 78 90 24 8e e8 91 cc 10 00 4c 8b 3d d2 10 12 0c <48> c7 c0 20 64 bb 8d 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 5c 05
RSP: 0018:ffffc90000007b08 EFLAGS: 00000246
RAX: 1ffffffff1c4920f RBX: ffffe8ff14679060 RCX: ffff8880221f5640
RDX: 0000000000000100 RSI: ffffffff8d998940 RDI: ffffe8ff14679060
RBP: ffffe8ff14679060 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88804b03e308 R15: ffffffff8df38000
FS:  00007fe8ccd426c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002d5000 CR3: 0000000027708000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 free_percpu+0x209/0xf50
 qdisc_free_cb+0xa2/0xe0
 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: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:ffffc90003cdf280 EFLAGS: 00000206
RAX: aa4b1828001b7a00 RBX: 1ffff9200079be58 RCX: aa4b1828001b7a00
RDX: 0000000000000007 RSI: ffffffff8d998940 RDI: ffffffff8be29f40
RBP: ffffc90003cdf370 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x84/0xe0
 cgroup_id_from_mm+0x26a/0x2c0
 perf_trace_mmap_lock+0x247/0x350
 __mmap_lock_do_trace_released+0x17a/0x1d0
 do_user_addr_fault+0x1376/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 e9 fd 00 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc90003cdf698 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888124f600e8 RCX: 00000000000000b2
RDX: 0000000000000000 RSI: ffff888124f6fd28 RDI: 00002000002d5000
RBP: ffffc90003cdf800 R08: ffff888124f702b7 R09: 1ffff110249ee056
R10: dffffc0000000000 R11: ffffed10249ee057 R12: 1ffff9200079bfbf
R13: 00002000002c53c0 R14: ffffc90003cdfe08 R15: 00000000000101d0
 _copy_to_iter+0x24c/0x16f0
 __skb_datagram_iter+0xf8/0x990
 skb_copy_datagram_iter+0xc5/0x230
 tipc_recvstream+0x72d/0xe70
 sock_recvmsg+0x22c/0x270
 ____sys_recvmsg+0x1c9/0x460
 ___sys_recvmsg+0x1b5/0x510
 __x64_sys_recvmsg+0x198/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8cbf8e9a9
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:00007fe8ccd42038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007fe8cc1b5fa0 RCX: 00007fe8cbf8e9a9
RDX: 0000000000001f00 RSI: 0000200000000500 RDI: 0000000000000009
RBP: 00007fe8cc010d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe8cc1b5fa0 R15: 00007ffe3cf3a658
 </TASK>
sched: DL replenish lagged too much
