rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P12217/1:b..l (detected by 0, t=10505 jiffies, g=32689, q=1090 ncpus=2) task:syz-executor.5 state:R running task stack:23000 pid:12217 ppid:3592 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5241 [inline] __schedule+0x132c/0x4330 kernel/sched/core.c:6554 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6723 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6747 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34 vprintk_emit+0x1ba/0x1f0 kernel/printk/printk.c:2269 _printk+0xd1/0x111 kernel/printk/printk.c:2289 __dev_set_promiscuity+0x1df/0x5d0 net/core/dev.c:8342 dev_set_promiscuity+0x4d/0xd0 net/core/dev.c:8381 team_change_rx_flags+0x1df/0x300 drivers/net/team/team.c:1780 dev_change_rx_flags net/core/dev.c:8315 [inline] __dev_set_promiscuity+0x426/0x5d0 net/core/dev.c:8358 dev_set_promiscuity+0x4d/0xd0 net/core/dev.c:8381 br_port_set_promisc net/bridge/br_if.c:108 [inline] br_manage_promisc+0x15f/0x530 net/bridge/br_if.c:157 br_add_if+0x68f/0xed0 net/bridge/br_if.c:639 do_set_master net/core/rtnetlink.c:2578 [inline] do_setlink+0xd92/0x3e60 net/core/rtnetlink.c:2781 __rtnl_newlink net/core/rtnetlink.c:3553 [inline] rtnl_newlink+0x16f7/0x1fa0 net/core/rtnetlink.c:3600 rtnetlink_rcv_msg+0x776/0xf00 net/core/rtnetlink.c:6097 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2524 netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline] netlink_unicast+0x7bf/0x990 net/netlink/af_netlink.c:1354 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1902 sock_sendmsg_nosec net/socket.c:716 [inline] sock_sendmsg net/socket.c:736 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fba7308c389 RSP: 002b:00007fba73dae168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fba731ac050 RCX: 00007fba7308c389 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 00007fba730d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea0ae363f R14: 00007fba73dae300 R15: 0000000000022000 rcu: rcu_preempt kthread timer wakeup didn't happen for 10490 jiffies! g32689 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=23778 rcu: rcu_preempt kthread starved for 10491 jiffies! g32689 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26712 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5241 [inline] __schedule+0x132c/0x4330 kernel/sched/core.c:6554 schedule+0xbf/0x180 kernel/sched/core.c:6630 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x2c2/0x1010 kernel/rcu/tree.c:1661 rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1860 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12230 Comm: syz-executor.3 Not tainted 6.1.38-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4585 [inline] RIP: 0010:__lock_acquire+0xd9b/0x1f80 kernel/locking/lockdep.c:5040 Code: 84 c0 0f 85 36 0b 00 00 41 8b 1c 24 48 85 db 74 58 83 fb 31 0f 83 0e 10 00 00 48 8d 04 9b 48 8b 0c 24 48 8d 5c c1 f8 48 89 d8 <48> c1 e8 03 0f b6 04 38 84 c0 0f 85 62 0c 00 00 8b 1b 48 8b 44 24 RSP: 0018:ffffc900001e0a00 EFLAGS: 00000087 RAX: ffff888028a1c6a8 RBX: ffff888028a1c6a8 RCX: ffff888028a1c660 RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000 RBP: ffff888028a1c6b0 R08: dffffc0000000000 R09: fffffbfff2052845 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888028a1c658 R13: 0000000000000000 R14: ffff888028a1c6d0 R15: b4f6a874e194f063 FS: 00007f1775891700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f21ceab7440 CR3: 000000001ecc2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 debug_object_deactivate+0x61/0x3f0 lib/debugobjects.c:763 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline] debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:481 __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 82 61 52 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 27 13 d0 f6 65 8b 05 a8 8f 74 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc9001629fb60 EFLAGS: 00000206 RAX: 97161b1f6a042400 RBX: 1ffff92002c53f70 RCX: ffffffff816a3f0a RDX: dffffc0000000000 RSI: ffffffff8aebd320 RDI: 0000000000000001 RBP: ffffc9001629fbf0 R08: dffffc0000000000 R09: fffffbfff2052845 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff92002c53f6c R14: ffffc9001629fb80 R15: 0000000000000246 clock_was_set+0x179/0x900 kernel/time/hrtimer.c:970 do_settimeofday64+0x673/0x7e0 kernel/time/timekeeping.c:1345 __do_sys_clock_settime kernel/time/posix-timers.c:1092 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1080 [inline] __x64_sys_clock_settime+0x232/0x270 kernel/time/posix-timers.c:1080 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1774a8c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1775891168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007f1774babf80 RCX: 00007f1774a8c389 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f1774ad7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0f8d995f R14: 00007f1775891300 R15: 0000000000022000