INFO: rcu detected stall in __sock

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in __sock_create (3) mm	21	91d	326d	0/29	auto-obsoleted due to no activity on 2025/06/20 21:57
upstream	INFO: rcu detected stall in __sock_create (2) kernel	2	1992d	1992d	0/29	closed as invalid on 2020/01/08 05:33
linux-5.15	INFO: rcu detected stall in __sock_create	1	395d	395d	0/3	auto-obsoleted due to no activity on 2024/08/30 14:48
linux-6.1	INFO: rcu detected stall in __sock_create	3	263d	365d	0/3	auto-obsoleted due to no activity on 2025/01/09 18:19
linux-6.1	INFO: rcu detected stall in __sock_create (2)	2	100d	133d	0/3	auto-obsoleted due to no activity on 2025/06/22 07:20

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8233 (detected by 0, t=10503 jiffies, g=6533, q=115) syz-executor.0 R running task 29000 8233 8210 0x0000400a Call Trace: <IRQ> sched_show_task+0x40f/0x560 kernel/sched/core.c:5954 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:190 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:398 [inline] check_cpu_stall kernel/rcu/tree_stall.h:538 [inline] rcu_pending kernel/rcu/tree.c:2827 [inline] rcu_sched_clock_irq+0x16b1/0x1ad0 kernel/rcu/tree.c:2271 update_process_times+0x12d/0x180 kernel/time/timer.c:1726 tick_sched_handle kernel/time/tick-sched.c:167 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1310 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x403/0x840 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x50 kernel/kcov.c:107 Code: 0c 25 c0 1d 02 00 65 8b 15 38 84 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 <48> 8d 7e 01 8b 89 84 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 RSP: 0018:ffffc900020979f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81487433 RBX: 0000000000000000 RCX: ffff8880a9168040 RDX: ffffc90002f09000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90002097a18 R08: 000000000003a728 R09: ffffed10151fce9f R10: ffffed10151fce9f R11: 0000000000000000 R12: dffffc0000000000 R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a8fe74e8 free_thread_stack+0x168/0x590 kernel/fork.c:280 release_task_stack kernel/fork.c:440 [inline] put_task_stack+0xa3/0x130 kernel/fork.c:451 finish_task_switch+0x3f1/0x550 kernel/sched/core.c:3256 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x9a8/0xcc0 kernel/sched/core.c:4081 preempt_schedule_notrace+0xdb/0x120 kernel/sched/core.c:4309 ___preempt_schedule_notrace+0x16/0x27 arch/x86/entry/thunk_64.S:51 rcu_is_watching+0x82/0xa0 kernel/rcu/tree.c:923 rcu_read_unlock include/linux/rcupdate.h:667 [inline] memcg_kmem_get_cache+0x2e8/0x570 mm/memcontrol.c:2808 slab_pre_alloc_hook mm/slab.h:572 [inline] slab_alloc mm/slab.c:3306 [inline] kmem_cache_alloc+0x86/0x2e0 mm/slab.c:3484 sk_prot_alloc+0x60/0x290 net/core/sock.c:1597 sk_alloc+0x38/0x9c0 net/core/sock.c:1657 unix_create1+0x91/0x560 net/unix/af_unix.c:771 unix_create+0x136/0x1c0 net/unix/af_unix.c:832 __sock_create+0x5cc/0x910 net/socket.c:1420 sock_create net/socket.c:1471 [inline] __sys_socketpair+0x195/0xc90 net/socket.c:1571 __do_sys_socketpair net/socket.c:1624 [inline] __se_sys_socketpair net/socket.c:1621 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1621 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a679 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f615e6d2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a679 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000300 R11: 0000000000000246 R12: 00007f615e6d36d4 R13: 00000000004ca7a6 R14: 00000000004e3a20 R15: 00000000ffffffff rcu: rcu_preempt kthread starved for 10532 jiffies! g6533 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29104 10 2 0x80004000 Call Trace: context_switch kernel/sched/core.c:3385 [inline] __schedule+0x9a0/0xcc0 kernel/sched/core.c:4081 schedule+0x181/0x210 kernel/sched/core.c:4155 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895 rcu_gp_fqs_loop kernel/rcu/tree.c:1661 [inline] rcu_gp_kthread+0xed8/0x1770 kernel/rcu/tree.c:1821 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352