rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (1 ticks this GP) idle=cf3c/1/0x4000000000000000 softirq=67348/67348 fqs=0 rcu: (detected by 1, t=10502 jiffies, g=67437, q=182 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 17384 Comm: syz.2.3287 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__remove_hrtimer+0x16/0x290 kernel/time/hrtimer.c:1101 Code: fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 89 d7 41 56 41 55 41 89 cd 41 54 55 48 89 f5 53 48 89 fb 35 e1 12 00 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 RSP: 0018:ffffc90000007df8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888059bd6340 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8880b862cb00 RDI: ffff888059bd6340 RBP: ffff8880b862cb00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000006 R12: ffff888059bd6340 R13: 0000000000000000 R14: ffff8880b862ca00 R15: 0000000000000000 FS: 00007fb2084dc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde45d94f90 CR3: 000000002b39e000 CR4: 00000000003526f0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1719 [inline] __hrtimer_run_queues+0x50b/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211 Code: 00 e8 b0 16 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 6e 67 20 00 48 85 db 0f 85 55 01 00 00 e8 f0 64 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 25 4d 83 RSP: 0018:ffffc9000357ec38 EFLAGS: 00000246 RAX: ffffffff8ee915f8 RBX: 0000000000000000 RCX: ffffc90012ab1000 RDX: 0000000000080000 RSI: ffffffff8179a150 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8ee915f8 R13: ffffffff8ee915a0 R14: ffffc9000357ecc8 R15: dffffc0000000000 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0xd9/0x210 kernel/printk/printk.c:3309 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86 _printk+0xc8/0x100 kernel/printk/printk.c:2457 __netdev_printk+0x376/0x500 net/core/dev.c:11946 netdev_info+0xe5/0x120 net/core/dev.c:11993 __dev_set_allmulti+0x1a5/0x3d0 net/core/dev.c:8809 vlan_dev_change_rx_flags+0xd9/0x170 net/8021q/vlan_dev.c:495 dev_change_rx_flags net/core/dev.c:8709 [inline] __dev_set_allmulti+0x1ff/0x3d0 net/core/dev.c:8811 vlan_dev_open+0x719/0x940 net/8021q/vlan_dev.c:277 __dev_open+0x2d4/0x4e0 net/core/dev.c:1476 dev_open net/core/dev.c:1512 [inline] dev_open+0xf4/0x160 net/core/dev.c:1505 team_port_add drivers/net/team/team_core.c:1216 [inline] team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1975 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2917 rtnl_newlink_create net/core/rtnetlink.c:3803 [inline] __rtnl_newlink net/core/rtnetlink.c:3896 [inline] rtnl_newlink+0xc70/0x1ce0 net/core/rtnetlink.c:4009 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6919 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637 __sys_sendmsg+0x16e/0x220 net/socket.c:2669 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb20777fed9 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:00007fb2084dc058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb207945fa0 RCX: 00007fb20777fed9 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000006 RBP: 00007fb2077f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb207945fa0 R15: 00007ffdb431f1d8 rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g67437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=89443 rcu: rcu_preempt kthread starved for 10502 jiffies! g67437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 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:I stack:27600 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [kworker/u8:1:13764] Modules linked in: irq event stamp: 8570676 hardirqs last enabled at (8570675): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:357 hardirqs last disabled at (8570676): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (8570670): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (8570670): [] handle_softirqs+0x5bb/0x8f0 kernel/softirq.c:582 softirqs last disabled at (8570613): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (8570613): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (8570613): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:655 CPU: 1 UID: 0 PID: 13764 Comm: kworker/u8:1 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:write_comp_data+0x18/0x90 kernel/kcov.c:246 Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 2f d2 69 7e 65 8b 05 30 d2 69 7e 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00 0f 00 75 60 a9 00 00 RSP: 0018:ffffc9001b95f990 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffff8880b86469c0 RCX: ffffffff818df8bc RDX: ffff888028188000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000006 R12: ffffed10170c8d39 R13: 0000000000000001 R14: ffff8880b86469c8 R15: ffff8880b873fe40 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33a02ff8 CR3: 000000000df7e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:340 [inline] smp_call_function_many_cond+0x47c/0x1300 kernel/smp.c:884 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2114 [inline] text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2324 text_poke_flush arch/x86/kernel/alternative.c:2515 [inline] text_poke_flush arch/x86/kernel/alternative.c:2512 [inline] text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2522 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:849 [inline] toggle_allocation_gate+0xfc/0x260 mm/kfence/core.c:841 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 17384 Comm: syz.2.3287 Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:130 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x5a/0x1a0 mm/kasan/generic.c:189 Code: b3 00 00 00 4c 8d 54 37 ff 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 d1 48 c1 ed 03 49 c1 e9 03 48 01 c5 49 01 c1 48 89 e8 <49> 8d 59 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e 8d 00 00 00 41 89 RSP: 0018:ffffc90000007bb8 EFLAGS: 00000086 RAX: fffffbfff2dca599 RBX: 0000000000000070 RCX: ffffffff8175c37e RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff96e52cc8 RBP: fffffbfff2dca599 R08: 0000000000000000 R09: fffffbfff2dca599 R10: ffffffff96e52ccf R11: 0000000000000005 R12: 0000000000000002 R13: ffff88802b12a440 R14: 0000000000000070 R15: ffff88802b12afe8 FS: 00007fb2084dc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fde45d94f90 CR3: 000000002b39e000 CR4: 00000000003526f0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class+0x4e/0x130 kernel/locking/lockdep.c:228 check_wait_context kernel/locking/lockdep.c:4851 [inline] __lock_acquire+0x44d/0x3c40 kernel/locking/lockdep.c:5176 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1743 [inline] __hrtimer_run_queues+0x2be/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211 Code: 00 e8 b0 16 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 6e 67 20 00 48 85 db 0f 85 55 01 00 00 e8 f0 64 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 25 4d 83 RSP: 0018:ffffc9000357ec38 EFLAGS: 00000246 RAX: ffffffff8ee915f8 RBX: 0000000000000000 RCX: ffffc90012ab1000 RDX: 0000000000080000 RSI: ffffffff8179a150 RDI: 0000000000000007 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8ee915f8 R13: ffffffff8ee915a0 R14: ffffc9000357ecc8 R15: dffffc0000000000 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline] console_unlock+0xd9/0x210 kernel/printk/printk.c:3309 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:86 _printk+0xc8/0x100 kernel/printk/printk.c:2457 __netdev_printk+0x376/0x500 net/core/dev.c:11946 netdev_info+0xe5/0x120 net/core/dev.c:11993 __dev_set_allmulti+0x1a5/0x3d0 net/core/dev.c:8809 vlan_dev_change_rx_flags+0xd9/0x170 net/8021q/vlan_dev.c:495 dev_change_rx_flags net/core/dev.c:8709 [inline] __dev_set_allmulti+0x1ff/0x3d0 net/core/dev.c:8811 vlan_dev_open+0x719/0x940 net/8021q/vlan_dev.c:277 __dev_open+0x2d4/0x4e0 net/core/dev.c:1476 dev_open net/core/dev.c:1512 [inline] dev_open+0xf4/0x160 net/core/dev.c:1505 team_port_add drivers/net/team/team_core.c:1216 [inline] team_add_slave+0xacd/0x20e0 drivers/net/team/team_core.c:1975 do_set_master+0x1bc/0x230 net/core/rtnetlink.c:2917 rtnl_newlink_create net/core/rtnetlink.c:3803 [inline] __rtnl_newlink net/core/rtnetlink.c:3896 [inline] rtnl_newlink+0xc70/0x1ce0 net/core/rtnetlink.c:4009 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6919 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637 __sys_sendmsg+0x16e/0x220 net/socket.c:2669 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb20777fed9 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:00007fb2084dc058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb207945fa0 RCX: 00007fb20777fed9 RDX: 0000000000000000 RSI: 0000000020000440 RDI: 0000000000000006 RBP: 00007fb2077f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb207945fa0 R15: 00007ffdb431f1d8