rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2667 jiffies s: 28621 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5840 Comm: syz.3.466 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_acquire+0x1cb/0x4a0 kernel/locking/lockdep.c:5664
Code: 48 8b 4c 24 28 4c 8b 44 24 30 6a 00 6a 00 ff 75 10 ff 74 24 30 e8 25 04 00 00 48 83 c4 20 48 c7 c7 20 22 8c 8a e8 c5 9c c9 08 <b8> ff ff ff ff 65 0f c1 05 98 3b 9e 7e 83 f8 01 0f 85 03 01 00 00
RSP: 0018:ffffc900001e0260 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000000 RCX: f7dc11b100fae600
RDX: 0000000000000000 RSI: ffffffff8a8c2220 RDI: ffffffff8adf0d20
RBP: ffffc900001e0368 R08: dffffc0000000000 R09: 1ffffffff215ee48
R10: dffffc0000000000 R11: fffffbfff215ee49 R12: 0000000000000001
R13: 1ffff9200003c058 R14: 0000000000000046 R15: dffffc0000000000
FS:  00007f3886c856c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7dd0de92f8 CR3: 000000007e5c6000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:883 [inline]
 pfn_valid include/linux/mmzone.h:1857 [inline]
 __virt_addr_valid+0x1a5/0x540 arch/x86/mm/physaddr.c:65
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140
 rcu_read_unlock_special+0x3c9/0x510 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0880 EFLAGS: 00000206
RAX: f7dc11b100fae600 RBX: 1ffff9200003c118 RCX: f7dc11b100fae600
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffffffff8adf0d20
RBP: ffffc900001e0968 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline]
 percpu_ref_put+0xef/0x180 include/linux/percpu-refcount.h:351
 css_put include/linux/cgroup.h:407 [inline]
 obj_cgroup_uncharge_pages mm/memcontrol.c:3080 [inline]
 refill_obj_stock+0x456/0x6a0 mm/memcontrol.c:3350
 memcg_slab_free_hook+0x125/0x1f0 mm/slab.h:569
 slab_free mm/slub.c:3682 [inline]
 kmem_cache_free+0xe0/0x290 mm/slub.c:3709
 rcu_do_batch kernel/rcu/tree.c:2297 [inline]
 rcu_core+0xa99/0x1740 kernel/rcu/tree.c:2557
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:refill_obj_stock+0x3f8/0x6a0 mm/memcontrol.c:3346
Code: 24 80 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 25 08 f8 0f 85 ad 00 00 00 f7 c3 00 02 00 00 74 01 fb 48 8b 7c 24 20 <48> 85 ff 74 05 e8 ae 8f 00 00 45 85 f6 74 4f 48 8b 7c 24 08 e8 0f
RSP: 0018:ffffc9001c3bfb20 EFLAGS: 00000206
RAX: f7dc11b100fae600 RBX: 0000000000000a06 RCX: f7dc11b100fae600
RDX: dffffc0000000000 RSI: ffffffff8a8c10a0 RDI: ffff888026b73300
RBP: ffffc9001c3bfc10 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000
R13: 1ffff92003877f6c R14: 0000000000000000 R15: ffff8880b8f36978
 obj_cgroup_charge+0x3d5/0x620 mm/memcontrol.c:3392
 memcg_slab_pre_alloc_hook mm/slab.h:501 [inline]
 slab_pre_alloc_hook+0x2e7/0x310 mm/slab.h:715
 slab_alloc_node mm/slub.c:3279 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc_lru+0x49/0x2e0 mm/slub.c:3390
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 sock_alloc_inode+0x24/0xc0 net/socket.c:306
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x5f/0x1c0 fs/inode.c:1063
 sock_alloc net/socket.c:631 [inline]
 __sock_create+0x129/0x940 net/socket.c:1513
 sock_create net/socket.c:1605 [inline]
 __sys_socketpair+0x1bd/0x540 net/socket.c:1732
 __do_sys_socketpair net/socket.c:1785 [inline]
 __se_sys_socketpair net/socket.c:1782 [inline]
 __x64_sys_socketpair+0x97/0xb0 net/socket.c:1782
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3885d9c799
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:00007f3886c85028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f3886015fa0 RCX: 00007f3885d9c799
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 00007f3885e32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000001480 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3886016038 R14: 00007f3886015fa0 R15: 00007ffc190b2348
 </TASK>