rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5403/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=10393, q=935 ncpus=2)
task:syz-executor.5 state:R running task stack:20296 pid:5403 ppid:5399 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x19b9/0x4b10 kernel/sched/core.c:6695
preempt_schedule_common+0x83/0xc0 kernel/sched/core.c:6864
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6888
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk_64.S:45
vprintk_emit+0x664/0x720 kernel/printk/printk.c:2308
_printk+0xd1/0x120 kernel/printk/printk.c:2332
batadv_check_known_mac_addr+0x2aa/0x400 net/batman-adv/hard-interface.c:526
batadv_hard_if_event+0x300/0x1540 net/batman-adv/hard-interface.c:998
notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93
call_netdevice_notifiers_info net/core/dev.c:1970 [inline]
call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
call_netdevice_notifiers net/core/dev.c:2022 [inline]
dev_set_mac_address+0x3c4/0x520 net/core/dev.c:8860
dev_set_mac_address_user+0x2d/0x50 net/core/dev.c:8874
do_setlink+0x8eb/0x4340 net/core/rtnetlink.c:2828
__rtnl_newlink net/core/rtnetlink.c:3671 [inline]
rtnl_newlink+0x17f2/0x2070 net/core/rtnetlink.c:3718
rtnetlink_rcv_msg+0x87a/0x1020 net/core/rtnetlink.c:6444
netlink_rcv_skb+0x1db/0x420 net/netlink/af_netlink.c:2545
netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1368
netlink_sendmsg+0xa33/0xd70 net/netlink/af_netlink.c:1910
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
__sys_sendto+0x480/0x640 net/socket.c:2177
__do_sys_sendto net/socket.c:2189 [inline]
__se_sys_sendto net/socket.c:2185 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2185
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: 0033:0x7ff8fa47e7dc
RSP: 002b:00007fff1aff22c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007ff8fb0c4620 RCX: 00007ff8fa47e7dc
RDX: 000000000000002c RSI: 00007ff8fb0c4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff1aff2314 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 0000000000000000 R14: 00007ff8fb0c4670 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10556 jiffies! g10393 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:25256 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x19b9/0x4b10 kernel/sched/core.c:6695
schedule+0xbf/0x180 kernel/sched/core.c:6771
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x2c2/0x1010 kernel/rcu/tree.c:1613
rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1812
kthread+0x2cf/0x360 kernel/kthread.c:388
ret_from_fork+0x44/0x70 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5582 Comm: syz-executor.3 Not tainted 6.6.0-rc1-syzkaller-00269-ge789286468a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:finish_task_switch+0x1d3/0x800 kernel/sched/core.c:5254
Code: 7a 0b 00 48 83 c4 08 4c 89 f7 e8 c8 30 00 00 0f 1f 44 00 00 4c 89 f7 e8 ab 86 6a 09 e8 a6 21 33 00 fb 49 8d bc 24 e0 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90005ccf1c8 EFLAGS: 00000282
RAX: b5218e1867c8d800 RBX: ffff88807bd69df4 RCX: ffffffff816d2a9a
RDX: dffffc0000000000 RSI: ffffffff8b0c1500 RDI: ffff888019f05160
RBP: ffffc90005ccf210 R08: ffffffff906e942f R09: 1ffffffff20dd285
R10: dffffc0000000000 R11: fffffbfff20dd286 R12: ffff888019f03b80
R13: 1ffff1101730780b R14: ffff8880b983b300 R15: ffff8880b983c058
FS: 00007f71287e46c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000021000000 CR3: 000000007dff6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
context_switch kernel/sched/core.c:5385 [inline]
__schedule+0x19c1/0x4b10 kernel/sched/core.c:6695
preempt_schedule_common+0x83/0xc0 kernel/sched/core.c:6864
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6888
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x128/0x130 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up_sync_key+0x121/0x1c0 kernel/sched/wait.c:213
__unix_dgram_recvmsg+0x5fe/0x1260 net/unix/af_unix.c:2389
sock_recvmsg_nosec+0x86/0xd0 net/socket.c:1027
____sys_recvmsg+0x47f/0x570 net/socket.c:2758
___sys_recvmsg net/socket.c:2802 [inline]
do_recvmmsg+0x470/0xad0 net/socket.c:2896
__sys_recvmmsg net/socket.c:2975 [inline]
__do_sys_recvmmsg net/socket.c:2998 [inline]
__se_sys_recvmmsg net/socket.c:2991 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2991
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: 0033:0x7f7127a7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f71287e40c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f7127b9c050 RCX: 00007f7127a7cae9
RDX: 00000000040002db RSI: 0000000020000740 RDI: 0000000000000003
RBP: 00007f7127ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7127b9c050 R15: 00007fffd5328518