rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5232/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=7901, q=2161842 ncpus=2)
task:syz-executor state:R running task stack:19536 pid:5232 tgid:5232 ppid:5229 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7004
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5850
Code: 3c 3b 00 74 08 4c 89 f7 e8 85 14 8e 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90003f77c20 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920007eef96 RCX: ffffc90003f77c03
RDX: 0000000000000001 RSI: ffffffff8c0adc40 RDI: ffffffff8c60fb20
RBP: ffffc90003f77d58 R08: ffffffff901d082f R09: 1ffffffff203a105
R10: dffffc0000000000 R11: fffffbfff203a106 R12: 1ffff920007eef90
R13: 0000000000000246 R14: ffffc90003f77cb0 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
netlink_has_listeners+0x2e5/0x3a0 net/netlink/af_netlink.c:1389
sock_diag_has_destroy_listeners include/linux/sock_diag.h:94 [inline]
__sk_free+0x291/0x460 net/core/sock.c:2313
inet_release+0x17d/0x200 net/ipv4/af_inet.c:437
__sock_release net/socket.c:658 [inline]
sock_close+0xbc/0x240 net/socket.c:1426
__fput+0x23f/0x880 fs/file_table.c:431
__do_sys_close fs/open.c:1565 [inline]
__se_sys_close fs/open.c:1550 [inline]
__x64_sys_close+0x7f/0x110 fs/open.c:1550
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff3eb17cc8a
RSP: 002b:00007ffc40bbbc60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff3eb17cc8a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffc40bbbcac R08: 00000000000003b8 R09: 0079746972756365
R10: 00007ff3eb3087e0 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000135e2 R14: 00000000000132c2 R15: 00007ffc40bbbd00
rcu: rcu_preempt kthread starved for 10530 jiffies! g7901 f0x2 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:23728 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5314 Comm: kworker/0:7 Not tainted 6.12.0-rc2-syzkaller-00501-gd677aebd663d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:debug_lockdep_rcu_enabled+0x2a/0x40 kernel/rcu/update.c:321
Code: f3 0f 1e fa 31 c0 83 3d cf 5a 56 04 00 74 1e 83 3d 26 8c 56 04 00 74 15 65 48 8b 0c 25 c0 d7 03 00 31 c0 83 b9 dc 0a 00 00 00 <0f> 94 c0 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00
RSP: 0018:ffffc90000007390 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88802dc59e00
RDX: 0000000000000100 RSI: 0000000000000008 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8143028b R09: 1ffffffff2859900
R10: dffffc0000000000 R11: fffffbfff2859901 R12: 0000000199f50b00
R13: 1ffff92000000e8c R14: ffffffff81430173 R15: ffff88813fffaba0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32e1aff8 CR3: 000000005f9d2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock_sched include/linux/rcupdate.h:960 [inline]
pfn_valid include/linux/mmzone.h:2053 [inline]
__virt_addr_valid+0x3ab/0x530 arch/x86/mm/physaddr.c:65
kasan_addr_to_slab+0xd/0x80 mm/kasan/common.c:37
__kasan_record_aux_stack+0x11/0xc0 mm/kasan/generic.c:526
__call_rcu_common kernel/rcu/tree.c:3086 [inline]
call_rcu+0x167/0xa70 kernel/rcu/tree.c:3190
slab_free_hook mm/slub.c:2306 [inline]
slab_free mm/slub.c:4579 [inline]
kmem_cache_free+0x2fc/0x420 mm/slub.c:4681
nf_conntrack_free+0x2fd/0x390 net/netfilter/nf_conntrack_core.c:1735
nf_ct_put include/net/netfilter/nf_conntrack.h:186 [inline]
nf_conntrack_in+0xb51/0x1890 net/netfilter/nf_conntrack_core.c:2061
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5668 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5781
process_backlog+0x662/0x15b0 net/core/dev.c:6113
__napi_poll+0xcb/0x490 net/core/dev.c:6777
napi_poll net/core/dev.c:6846 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6968
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
nsim_dev_trap_report_work+0x75d/0xaa0 drivers/net/netdevsim/dev.c:850
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244