rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2158 jiffies s: 333 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3138 Comm: syz-executor.1 Not tainted 6.7.0-rc3-syzkaller-00033-g3b47bc037bd4 #0
Hardware name: linux,dummy-virt (DT)
pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : gfp_zonelist include/linux/gfp.h:151 [inline]
pc : node_zonelist include/linux/gfp.h:168 [inline]
pc : get_any_partial mm/slub.c:2367 [inline]
pc : get_partial mm/slub.c:2408 [inline]
pc : ___slab_alloc+0x2a4/0x8f0 mm/slub.c:3218
lr : get_any_partial mm/slub.c:2367 [inline]
lr : get_partial mm/slub.c:2408 [inline]
lr : ___slab_alloc+0x2a4/0x8f0 mm/slub.c:3218
sp : ffff80008000bad0
x29: ffff80008000bad0 x28: ffff00007f9f61d0 x27: 0000000000000002
x26: 00000000000021c0 x25: f2ff000004cf8fc0 x24: f2ff000004cf8fc0
x23: f3ff000002c39a40 x22: f2ff000002e94900 x21: ffff00007f9ddda0
x20: 00000000ffffffff x19: 0000000000000000 x18: ffffffffffffffff
x17: ffff7ffffd554000 x16: ffff800080008000 x15: ffff800080319000
x14: 00000000000001b7 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000009 x10: 0000000000000005 x9 : 0000000000000000
x8 : ffff80008000bdb8 x7 : 0000000000000000 x6 : f2ff000004cf8fc0
x5 : 0000000000000100 x4 : 0000000001320122 x3 : ffff7ffffd554000
x2 : f2ff000004cf8fc0 x1 : 0000000000000100 x0 : 0000000000000000
Call trace:
 get_any_partial mm/slub.c:2367 [inline]
 get_partial mm/slub.c:2408 [inline]
 ___slab_alloc+0x2a4/0x8f0 mm/slub.c:3218
 __slab_alloc.constprop.0+0x34/0x68 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x27c/0x288 mm/slub.c:3502
 dst_alloc+0x40/0x98 net/core/dst.c:89
 ip6_dst_alloc+0x24/0x90 net/ipv6/route.c:343
 icmp6_dst_alloc+0x64/0x1e0 net/ipv6/route.c:3263
 ndisc_send_skb+0x32c/0x3d4 net/ipv6/ndisc.c:489
 ndisc_send_rs+0x5c/0x1b0 net/ipv6/ndisc.c:719
 addrconf_rs_timer+0x158/0x2b0 net/ipv6/addrconf.c:3985
 call_timer_fn.constprop.0+0x24/0x80 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x224/0x270 kernel/time/timer.c:2022
 run_timer_softirq+0x20/0x40 kernel/time/timer.c:2035
 __do_softirq+0x10c/0x26c kernel/softirq.c:553
 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:886
 do_softirq_own_stack+0x1c/0x28 arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:434 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xc0/0xdc kernel/softirq.c:644
 __el1_irq arch/arm64/kernel/entry-common.c:503 [inline]
 el1_interrupt+0x38/0x64 arch/arm64/kernel/entry-common.c:517
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:591
 get_any_partial mm/slub.c:2367 [inline]
 get_partial mm/slub.c:2408 [inline]
 ___slab_alloc+0x2a4/0x8f0 mm/slub.c:3218
 __slab_alloc.constprop.0+0x34/0x68 mm/slub.c:3322
 __slab_alloc_node mm/slub.c:3375 [inline]
 slab_alloc_node mm/slub.c:3468 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x27c/0x288 mm/slub.c:3502
 radix_tree_node_alloc.constprop.0+0xb4/0xec lib/radix-tree.c:253
 idr_get_free+0x228/0x2b8 lib/radix-tree.c:1506
 idr_alloc_u32+0x6c/0xf4 lib/idr.c:46
 idr_alloc_cyclic+0x68/0xe4 lib/idr.c:125
 __kernfs_new_node+0xb0/0x234 fs/kernfs/dir.c:621
 kernfs_new_node+0x48/0x70 fs/kernfs/dir.c:679
 __kernfs_create_file+0x30/0xf0 fs/kernfs/file.c:1025
 cgroup_add_file kernel/cgroup/cgroup.c:4203 [inline]
 cgroup_addrm_files+0x14c/0x30c kernel/cgroup/cgroup.c:4263
 css_populate_dir+0x6c/0x1a8 kernel/cgroup/cgroup.c:1745
 cgroup_apply_control_enable+0xf0/0x320 kernel/cgroup/cgroup.c:3212
 cgroup_mkdir+0x258/0x4ac kernel/cgroup/cgroup.c:5772
 kernfs_iop_mkdir+0x5c/0x8c fs/kernfs/dir.c:1225
 vfs_mkdir+0x198/0x228 fs/namei.c:4106
 do_mkdirat+0x144/0x16c fs/namei.c:4129
 __do_sys_mkdirat fs/namei.c:4144 [inline]
 __se_sys_mkdirat fs/namei.c:4142 [inline]
 __arm64_sys_mkdirat+0x50/0x7c fs/namei.c:4142
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:51
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:155
 el0_svc+0x34/0xd8 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:595