rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2666 jiffies s: 5833 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: 6324 Comm: syz.4.563 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline]
RIP: 0010:tracing_gen_ctx_irq_test+0x4e/0x150 kernel/trace/trace.c:2648
Code: 48 8b 1d 85 73 7c 7e 48 89 df be 08 00 00 00 e8 78 63 4d 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 d2 61 4d 00 <4c> 8b 23 45 89 ef 89 e8 83 c8 40 4d 89 fe 49 81 e6 00 00 f0 00 0f
RSP: 0018:ffffc900001e03c8 EFLAGS: 00000046
RAX: 1ffff11004ed4b28 RBX: ffff8880276a5940 RCX: ffffffff8185fbc8
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880276a5940
RBP: 0000000000000001 R08: ffff8880276a5947 R09: 1ffff11004ed4b28
R10: dffffc0000000000 R11: ffffed1004ed4b29 R12: dffffc0000000000
R13: 0000000000000102 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f1600c366c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001db000 CR3: 000000005254f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 tracing_gen_ctx_flags include/linux/trace_events.h:185 [inline]
 tracing_gen_ctx include/linux/trace_events.h:192 [inline]
 perf_trace_buf_update+0xa8/0x230 kernel/trace/trace_event_perf.c:433
 perf_tp_event+0x189/0xc00 kernel/events/core.c:10025
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10002
 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 e2 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:ffffc900001e0980 EFLAGS: 00000206
RAX: 067d8be7e7097100 RBX: 1ffff9200003c138 RCX: 067d8be7e7097100
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0f60
RBP: ffffc900001e0a80 R08: ffffffff90af632f R09: 1ffffffff215ec65
R10: dffffc0000000000 R11: fffffbfff215ec66 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]
 hsr_announce+0x2ca/0x340 net/hsr/hsr_device.c:407
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 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:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5124
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 d0 6d dd 08 e8 0b 2c 2f 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900035277b8 EFLAGS: 00000286
RAX: 067d8be7e7097100 RBX: 0000000000000000 RCX: 067d8be7e7097100
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffffffff8adf0f60
RBP: ffffc90003527810 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: ffff8880276a5940
R13: dffffc0000000000 R14: ffff88802def3b80 R15: ffff8880b8f3b5d0
 context_switch kernel/sched/core.c:5248 [inline]
 __schedule+0x11d9/0x40e0 kernel/sched/core.c:6562
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6874
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 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:ffffc90003527b20 EFLAGS: 00000206
RAX: 067d8be7e7097100 RBX: 0000000000000a06 RCX: 067d8be7e7097100
RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: ffff88807944a100
RBP: ffffc90003527c10 R08: ffff8880b8f3580b R09: 1ffff110171e6b01
R10: dffffc0000000000 R11: ffffed10171e6b02 R12: dffffc0000000000
R13: 1ffff920006a4f6c R14: 0000000000000001 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: 0033:0x7f15ffd9c799
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:00007f1600c36028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f1600015fa0 RCX: 00007f15ffd9c799
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 000000000000000b
RBP: 00007f15ffe32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000007c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1600016038 R14: 00007f1600015fa0 R15: 00007ffe4fd9f118
 </TASK>