rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=afd/1/0x4000000000000000 softirq=10114/10116 fqs=2100 
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5447
	(detected by 1, t=10506 jiffies, g=12149, q=1586)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5447 Comm: syz.2.316 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:check_preemption_disabled+0x1/0x110 lib/smp_processor_id.c:13
Code: 00 48 c7 c7 60 e9 32 8a e8 2c 01 00 00 65 ff 0d f1 6d 49 76 5b c3 00 00 cc 48 c7 c7 20 c9 79 8a 48 c7 c6 60 c9 79 8a eb 00 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc90000007d18 EFLAGS: 00000046
RAX: 0d849ae238c23200 RBX: ffffffff8be2d820 RCX: ffff88805ae41dc0
RDX: 0000000000010100 RSI: ffffffff8a79c960 RDI: ffffffff8a79c920
RBP: 0000000000000000 R08: ffff8880b903b1fb R09: 1ffff1101720763f
R10: dffffc0000000000 R11: ffffed1017207640 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f688d7876c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5f1c52d58 CR3: 000000004f935000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irq_work_run+0x68/0xe0 kernel/irq_work.c:187
 __sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:handle_softirqs+0x325/0x830 kernel/softirq.c:576
Code: 00 00 e8 7e e7 74 00 48 0f a3 1d 7e b3 40 0c 73 0d e8 8f 70 1b 00 84 c0 0f 84 6c 01 00 00 4c 89 eb 48 c1 eb 03 42 80 3c 3b 00 <74> 08 4c 89 ef e8 c1 e5 74 00 4c 89 ef 41 ff 55 00 0f 1f 44 00 00
RSP: 0018:ffffc90000007e20 EFLAGS: 00000246
RAX: 0000000000007a01 RBX: 1ffffffff1801421 RCX: 0d849ae238c23200
RDX: 0000000000000000 RSI: ffffffff8a79c960 RDI: ffffffff8a79c920
RBP: ffffc90000007f30 R08: ffffffff8d89e06f R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: 0000000000000009
R13: ffffffff8c00a108 R14: 000000000000000a R15: dffffc0000000000
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_read_unlock_special+0x0/0x4a0 kernel/rcu/tree_plugin.h:625
Code: 56 c6 58 00 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 94 49 89 fd 4c 89 f7 e8 3c c6 58 00 4c 89 ef eb 84 0f 1f 80 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00
RSP: 0018:ffffc900031cfc38 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88805ae421fc RCX: 0d849ae238c23200
RDX: 0000000000000001 RSI: ffffffff8a79c960 RDI: ffff88805ae41dc0
RBP: 0000000000000cc0 R08: ffffffff8d89e06f R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: 1ffff1100b5c843f
R13: dffffc0000000000 R14: ffff88805ae42200 R15: dffffc0000000000
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 get_obj_cgroup_from_current+0x2ba/0x2f0 mm/memcontrol.c:2934
 memcg_slab_pre_alloc_hook mm/slab.h:283 [inline]
 slab_pre_alloc_hook+0x7d/0xc0 mm/slab.h:497
 slab_alloc_node mm/slub.c:3139 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x3d/0x280 mm/slub.c:3238
 sk_prot_alloc+0x57/0x210 net/core/sock.c:1860
 sk_alloc+0x2f/0x310 net/core/sock.c:1922
 unix_create1+0xad/0x610 net/unix/af_unix.c:-1
 unix_create+0x139/0x1f0 net/unix/af_unix.c:929
 __sock_create+0x473/0x910 net/socket.c:1496
 sock_create net/socket.c:1552 [inline]
 __sys_socketpair+0x1bd/0x540 net/socket.c:1652
 __do_sys_socketpair net/socket.c:1705 [inline]
 __se_sys_socketpair net/socket.c:1702 [inline]
 __x64_sys_socketpair+0x97/0xb0 net/socket.c:1702
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f688f52de59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f688d787028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f688f7a6fa0 RCX: 00007f688f52de59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f688f5c3e6f R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f688f7a7038 R14: 00007f688f7a6fa0 R15: 00007fffd3d7b808
 </TASK>
task:syz.2.316       state:R  running task     stack:24304 pid: 5447 ppid:  4201 flags:0x0000400c
Call Trace:
 <TASK>
 </TASK>