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Voluntary context switch within RCU read-side critical section!
WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0xba8/0xeb8 kernel/rcu/tree_plugin.h:332, CPU#0: syz.2.398/6556
Modules linked in:
CPU: 0 UID: 0 PID: 6556 Comm: syz.2.398 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : rcu_note_context_switch+0xba8/0xeb8 kernel/rcu/tree_plugin.h:332
lr : rcu_note_context_switch+0xba8/0xeb8 kernel/rcu/tree_plugin.h:332
sp : ffff8000970a6aa0
x29: ffff8000970a6b20 x28: dfff800000000000 x27: dfff800000000000
x26: ffff0000cfccd700 x25: 1ffff0001111dd74 x24: 0000000000000000
x23: 1fffe00019f99ae1 x22: ffff800125865000 x21: ffff0000cfccd708
x20: ffff0000cfccdb84 x19: ffff0000cfccd700 x18: 00000000ffffffff
x17: ffff80008a0e0c80 x16: ffff80008a4bc418 x15: ffff0000cfcce250
x14: ffff0000cfcce230 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000080000 x9 : 23180003ed4ab400
x8 : 23180003ed4ab400 x7 : ffff80008047caa0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f1374
x2 : 0000000100000001 x1 : ffff0000cfccd700 x0 : 0000000000000001
Call trace:
 rcu_note_context_switch+0xba8/0xeb8 kernel/rcu/tree_plugin.h:332 (P)
 __schedule+0x310/0x2dcc kernel/sched/core.c:7044
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x140/0x218 kernel/sched/core.c:7283
 do_sched_yield+0x160/0x1e8 kernel/sched/syscalls.c:1349
 yield+0x64/0xa0 kernel/sched/syscalls.c:1391
 netlink_broadcast_filtered+0xc5c/0xd00 net/netlink/af_netlink.c:1547
 nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
 nlmsg_multicast include/net/netlink.h:1184 [inline]
 nlmsg_notify+0x100/0x1d8 net/netlink/af_netlink.c:2593
 rtnl_notify+0xa0/0xd8 net/core/rtnetlink.c:964
 __ip6_del_rt_siblings+0x208/0x774 net/ipv6/route.c:4075
 ip6_route_del+0xd34/0xdc8 net/ipv6/route.c:4215
 inet6_rtm_delroute+0x4f8/0x5e0 net/ipv6/route.c:5649
 rtnetlink_rcv_msg+0x66c/0x9c8 net/core/rtnetlink.c:6996
 netlink_rcv_skb+0x22c/0x410 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7023
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x610/0x800 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x63c/0x920 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:787 [inline]
 __sock_sendmsg+0xc8/0x138 net/socket.c:802
 ____sys_sendmsg+0x418/0x70c net/socket.c:2698
 ___sys_sendmsg+0x198/0x224 net/socket.c:2752
 __sys_sendmsg+0x160/0x214 net/socket.c:2784
 __do_sys_sendmsg net/socket.c:2789 [inline]
 __se_sys_sendmsg net/socket.c:2787 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2787
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:740
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:759
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 724
hardirqs last  enabled at (723): [<ffff800080412f44>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1644 [inline]
hardirqs last  enabled at (723): [<ffff800080412f44>] rq_unlock_irq kernel/sched/sched.h:1983 [inline]
hardirqs last  enabled at (723): [<ffff800080412f44>] do_sched_yield+0x150/0x1e8 kernel/sched/syscalls.c:1346
hardirqs last disabled at (724): [<ffff800086749b58>] __schedule+0x304/0x2dcc kernel/sched/core.c:7043
softirqs last  enabled at (716): [<ffff800084b2fa34>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (716): [<ffff800084b2fa34>] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline]
softirqs last  enabled at (716): [<ffff800084b2fa34>] __dev_queue_xmit+0x11d4/0x2c18 net/core/dev.c:4905
softirqs last disabled at (708): [<ffff800084b2ea70>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (708): [<ffff800084b2ea70>] rcu_read_lock_bh include/linux/rcupdate.h:891 [inline]
softirqs last disabled at (708): [<ffff800084b2ea70>] __dev_queue_xmit+0x210/0x2c18 net/core/dev.c:4791
---[ end trace 0000000000000000 ]---