rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P3751/1:b..l
(detected by 1, t=10503 jiffies, g=7561, q=823 ncpus=2)
task:syz.1.13 state:R running task stack:25832 pid:3751 ppid:3640 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:lock_release+0x6/0xa20 kernel/locking/lockdep.c:5670
Code: ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 73 fd ff ff 4c 89 ef e8 2a 88 77 00 e9 66 fd ff ff 0f 1f 44 00 00 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 00 01 00 00 49 89 f5 48
RSP: 0018:ffffc9000451f8d8 EFLAGS: 00000283
RAX: 0000000000000001 RBX: ffff88807a803301 RCX: ffff88802cae9dc0
RDX: dffffc0000000000 RSI: ffffffff81e9e164 RDI: ffffffff8d32b000
RBP: ffffc9000451f8e0 R08: dffffc0000000000 R09: fffffbfff223b845
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000cc0
R13: dffffc0000000000 R14: ffffffff81e9e164 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:355 [inline]
rcu_read_unlock include/linux/rcupdate.h:824 [inline]
percpu_ref_tryget_many include/linux/percpu-refcount.h:250 [inline]
percpu_ref_tryget+0xfc/0x170 include/linux/percpu-refcount.h:266
obj_cgroup_tryget include/linux/memcontrol.h:779 [inline]
__get_obj_cgroup_from_memcg+0x70/0xe0 mm/memcontrol.c:3001
get_obj_cgroup_from_current mm/memcontrol.c:3021 [inline]
__memcg_kmem_charge_page+0x1ab/0x3b0 mm/memcontrol.c:3120
memcg_kmem_charge_page include/linux/memcontrol.h:1762 [inline]
memcg_charge_kernel_stack+0x159/0x710 kernel/fork.c:258
alloc_thread_stack_node kernel/fork.c:320 [inline]
dup_task_struct+0x408/0x6d0 kernel/fork.c:988
copy_process+0x637/0x4060 kernel/fork.c:2098
kernel_clone+0x222/0x920 kernel/fork.c:2682
__do_sys_clone3 kernel/fork.c:2981 [inline]
__se_sys_clone3+0x373/0x410 kernel/fork.c:2965
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8f53fb1f69
RSP: 002b:00007fff43c9f758 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f8f53f348b0 RCX: 00007f8f53fb1f69
RDX: 00007f8f53f348b0 RSI: 0000000000000058 RDI: 00007fff43c9f7a0
RBP: 00007f8f54ccf6c0 R08: 00007f8f54ccf6c0 R09: 00007fff43c9f887
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007fff43c9f7a0 R15: 00007fff43c9f888
rcu: rcu_preempt kthread starved for 4535 jiffies! g7561 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26712 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 3749 Comm: syz.0.11 Not tainted 6.1.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ip6_mc_input+0x96e/0xbd0
Code: 30 00 74 05 e8 03 a3 81 f8 48 8b b3 50 06 00 00 bf 01 00 00 00 4c 89 e2 48 89 d9 49 c7 c0 70 82 60 89 e8 15 be ff ff 45 31 ff <48> 8b 5c 24 10 48 c7 44 24 40 0e 36 e0 45 49 c7 04 1e 00 00 00 00
RSP: 0018:ffffc900001e07a0 EFLAGS: 00000282
RAX: 1a9ae3d08a53c601 RBX: 0000000000000000 RCX: ffffffff97333103
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5d6dc0
RBP: ffffc900001e0870 R08: ffffffff81b659cc R09: ffffed10171e6ad6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888076abab40
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007f2bc7d8e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffff6d04108 CR3: 000000001ca70000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302
__netif_receive_skb_one_core net/core/dev.c:5528 [inline]
__netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642
process_backlog+0x381/0x760 net/core/dev.c:5970
__napi_poll+0xc7/0x470 net/core/dev.c:6537
napi_poll net/core/dev.c:6604 [inline]
net_rx_action+0x70f/0xeb0 net/core/dev.c:6718
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__schedule+0x145d/0x4570 kernel/sched/core.c:6566
Code: 89 33 48 8b 7c 24 30 e8 61 0c 51 f6 48 89 c7 e8 59 03 b0 f6 48 c7 84 24 00 01 00 00 0e 36 e0 45 48 b8 00 00 00 00 00 fc ff df <48> 8b 8c 24 f8 00 00 00 48 c7 04 08 00 00 00 00 66 c7 44 08 0a 00
RSP: 0018:ffffc9000458f960 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: ffff8880b8f3a9d0 RCX: ffffffff97333103
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffff88807cc695f8
RBP: ffffc9000458fb10 R08: ffffffff81b659cc R09: ffffed10171e6ad6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807cc68530
R13: 1ffff11005a4445d R14: dffffc0000000000 R15: 1ffff1100f98d0a6
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:alloc_file+0x5c/0x5e0 fs/file_table.c:229
Code: 11 7e 48 81 c5 a0 08 00 00 48 89 e8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 ef e8 3f c8 f0 ff 48 8b 75 00 89 df e8 84 f8 ff ff <49> 89 c5 48 3d 01 f0 ff ff 72 0a e8 e4 45 99 ff e9 18 04 00 00 49
RSP: 0018:ffffc9000458fca8 EFLAGS: 00000282
RAX: ffff88807ed0a780 RBX: 0000000000000002 RCX: 0000000000040000
RDX: ffffc90004bf9000 RSI: 00000000000042e5 RDI: 00000000000042e6
RBP: ffff88807cc688a0 R08: ffffffff84606d19 R09: ffff88807ed0a870
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffc9000458fd80 R14: dffffc0000000000 R15: ffffc9000458fd80
alloc_file_pseudo+0x259/0x2f0 fs/file_table.c:272
sock_alloc_file+0xb4/0x240 net/socket.c:467
sock_map_fd net/socket.c:491 [inline]
__sys_socket+0x1ca/0x3a0 net/socket.c:1674
__do_sys_socket net/socket.c:1679 [inline]
__se_sys_socket net/socket.c:1677 [inline]
__x64_sys_socket+0x76/0x80 net/socket.c:1677
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2bc6f7df39
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:00007f2bc7d8e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f2bc7135f80 RCX: 00007f2bc6f7df39
RDX: 0000000000000300 RSI: 0200000000000002 RDI: 0000000000000011
RBP: 00007f2bc6ff0216 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2bc7135f80 R15: 00007ffdfe6b1dd8