rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=2d64/1/0x4000000000000000 softirq=23488/23558 fqs=5230
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1117042        162            0
rcu: 	cputime:    24167      28331           87   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=15601 q=2929 ncpus=2)
CPU: 0 UID: 0 PID: 7923 Comm: syz.0.657 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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+0x40/0x2390
Code: 89 fe 48 bd 00 00 00 00 00 fc ff df 48 8d 5f 48 48 89 d8 48 c1 e8 03 48 89 44 24 30 80 3c 28 00 74 08 48 89 df e8 b0 a1 b0 00 <48> 89 5c 24 18 49 8b 5e 48 4d 8d 6e 38 4c 89 e8 48 c1 e8 03 48 89
RSP: 0018:ffffc90000007718 EFLAGS: 00000246
RAX: 1ffff92000000f06 RBX: ffffc90000007830 RCX: 5708cb901dfeba00
RDX: dffffc0000000000 RSI: ffffffff894e33cd RDI: ffffc900000077e8
RBP: dffffc0000000000 R08: ffffc900000078b0 R09: 000000000000000e
R10: dffffc0000000000 R11: ffffffff81ad0050 R12: ffff888107595640
R13: 0000000000000000 R14: ffffc900000077e8 R15: ffffc900000077e8
FS:  00007f14c2c626c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed266c7580 CR3: 000000011008e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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
 kmem_cache_free+0x18f/0x400
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000345ed40 EFLAGS: 00000286
RAX: 5708cb901dfeba00 RBX: 0000000000000000 RCX: 5708cb901dfeba00
RDX: 0000000000000006 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc9000345edf0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200068bda8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kmem_cache_alloc_node_noprof+0x1f7/0x3c0
Code: 40 08 c5 75 0d 44 89 e2 48 89 df 31 f6 e8 f1 45 56 09 8b 6c 24 0c 66 90 41 f7 c6 00 00 40 00 0f 85 b4 00 00 00 41 f6 47 09 80 <0f> 85 a9 00 00 00 f3 0f 1e fa 48 8b 7c 24 10 48 89 de 4c 89 fa 44
RSP: 0018:ffffc9000345eeb0 EFLAGS: 00000246
RAX: ffff88803998f800 RBX: ffff88803998f800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88803998fac0
RBP: 00000000ffffffff R08: 00000000138b8585 R09: 0000000000000000
R10: ffff88803998f800 R11: ffffffff81ad0050 R12: 00000000000002c0
R13: ffff88803998f800 R14: 0000000000082cc0 R15: ffff88801caf6c80
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 tcp_stream_alloc_skb+0x3d/0x340
 tcp_connect+0x146f/0x4ef0
 tcp_v4_connect+0x10e7/0x19d0
 __inet_stream_connect+0x2ae/0xe80
 tcp_sendmsg_fastopen+0x3a7/0x5e0
 tcp_sendmsg_locked+0x4dc7/0x5650
 tcp_sendmsg+0x2f/0x50
 smc_sendmsg+0x250/0x4d0
 __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: 0033:0x7f14c1d8e9a9
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:00007f14c2c62038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f14c1fb6080 RCX: 00007f14c1d8e9a9
RDX: 0000000020044818 RSI: 00002000000009c0 RDI: 0000000000000008
RBP: 00007f14c1e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f14c1fb6080 R15: 00007ffce1da4668
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7923 Comm: syz.0.657 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:arch_stack_walk+0x123/0x150
Code: 29 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 a0 d9 07 0a 84 c0 74 11 4c 89 ff e8 14 2b 09 00 83 bd 78 ff ff ff 00 <75> cf 65 48 8b 05 e3 90 36 11 48 3b 45 d8 75 12 48 83 c4 68 5b 41
RSP: 0018:ffffc900000077a8 EFLAGS: 00000202
RAX: 0000000000007701 RBX: ffffc90000007860 RCX: 5708cb901dfeba00
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc90000007830 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffff888107595640
R13: 0000000000000000 R14: ffffffff81ad0050 R15: ffffc900000077a8
FS:  00007f14c2c626c0(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed266c7580 CR3: 000000011008e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kfree+0x18e/0x440
 slab_free_after_rcu_debug+0x60/0x2a0
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_call_function_single+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 8b 2d 21 f6 e8 c6 00 58 f6 fb bf 01 00 00 00 <e8> 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000345ed40 EFLAGS: 00000286
RAX: 5708cb901dfeba00 RBX: 0000000000000000 RCX: 5708cb901dfeba00
RDX: 0000000000000006 RSI: ffffffff8d998836 RDI: 0000000000000001
RBP: ffffc9000345edf0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200068bda8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kmem_cache_alloc_node_noprof+0x1f7/0x3c0
Code: 40 08 c5 75 0d 44 89 e2 48 89 df 31 f6 e8 f1 45 56 09 8b 6c 24 0c 66 90 41 f7 c6 00 00 40 00 0f 85 b4 00 00 00 41 f6 47 09 80 <0f> 85 a9 00 00 00 f3 0f 1e fa 48 8b 7c 24 10 48 89 de 4c 89 fa 44
RSP: 0018:ffffc9000345eeb0 EFLAGS: 00000246
RAX: ffff88803998f800 RBX: ffff88803998f800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88803998fac0
RBP: 00000000ffffffff R08: 00000000138b8585 R09: 0000000000000000
R10: ffff88803998f800 R11: ffffffff81ad0050 R12: 00000000000002c0
R13: ffff88803998f800 R14: 0000000000082cc0 R15: ffff88801caf6c80
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 tcp_stream_alloc_skb+0x3d/0x340
 tcp_connect+0x146f/0x4ef0
 tcp_v4_connect+0x10e7/0x19d0
 __inet_stream_connect+0x2ae/0xe80
 tcp_sendmsg_fastopen+0x3a7/0x5e0
 tcp_sendmsg_locked+0x4dc7/0x5650
 tcp_sendmsg+0x2f/0x50
 smc_sendmsg+0x250/0x4d0
 __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: 0033:0x7f14c1d8e9a9
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:00007f14c2c62038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f14c1fb6080 RCX: 00007f14c1d8e9a9
RDX: 0000000020044818 RSI: 00002000000009c0 RDI: 0000000000000008
RBP: 00007f14c1e10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f14c1fb6080 R15: 00007ffce1da4668
 </TASK>
