rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8836/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=27045, q=1097970 ncpus=2)
task:syz.3.857 state:R running task stack:23808 pid:8836 tgid:8836 ppid:6089 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
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:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:389
Code: 8c e8 74 e0 6d 0a 65 66 8b 05 e4 52 ac 7e 66 85 c0 75 5d bf 01 00 00 00 e8 bd ae 0b 00 e8 98 1a 45 00 fb 65 8b 05 a8 52 ac 7e <85> c0 75 05 e8 47 31 a9 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90002ebfa00 EFLAGS: 00000286
RAX: 0000000000000000 RBX: 1ffff920005d7f44 RCX: ffffffff8170bc6a
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: ffffffff8c60f860
RBP: ffffc90002ebfab8 R08: ffffffff942c583f R09: 1ffffffff2858b07
R10: dffffc0000000000 R11: fffffbfff2858b08 R12: dffffc0000000000
R13: 1ffff920005d7f48 R14: ffffc90002ebfa40 R15: 0000000000000201
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nl80211_netlink_notify+0x6e6/0x840 net/wireless/nl80211.c:20145
notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93
blocking_notifier_call_chain+0x69/0x90 kernel/notifier.c:388
netlink_release+0x11a6/0x1b10 net/netlink/af_netlink.c:787
__sock_release net/socket.c:658 [inline]
sock_close+0xbc/0x240 net/socket.c:1426
__fput+0x23f/0x880 fs/file_table.c:431
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f22e277dff9
RSP: 002b:00007ffd739f8638 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f22e2937a80 RCX: 00007f22e277dff9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f22e2937a80 R08: 0000000000000006 R09: 00007ffd739f892f
R10: 00000000003ffbb8 R11: 0000000000000246 R12: 0000000000030198
R13: 00007ffd739f8740 R14: 0000000000000032 R15: ffffffffffffffff
rcu: rcu_preempt kthread starved for 4559 jiffies! g27045 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:25952 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5281 Comm: kworker/0:4 Not tainted 6.12.0-rc1-syzkaller-00147-g9234a2549cb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x86/0x290 mm/kasan/generic.c:189
Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc
RSP: 0018:ffffc90000006538 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffffffff2858b01 RCX: ffffffff8170bc6a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942c5808
RBP: ffffffffffffffff R08: ffffffff942c580f R09: 1ffffffff2858b01
R10: dffffc0000000000 R11: fffffbfff2858b01 R12: ffff88802dca3c00
R13: dffffc0000000000 R14: dffffc0000000001 R15: fffffbfff2858b02
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e68000 CR3: 000000002fdb6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
mark_lock+0x9a/0x360 kernel/locking/lockdep.c:4703
mark_usage kernel/locking/lockdep.c:4646 [inline]
__lock_acquire+0xc35/0x2050 kernel/locking/lockdep.c:5156
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
seqcount_lockdep_reader_access+0x13f/0x220 include/linux/seqlock.h:73
timekeeping_debug_get_ns kernel/time/timekeeping.c:256 [inline]
timekeeping_get_ns+0x5c/0x420 kernel/time/timekeeping.c:401
ktime_get+0x89/0xb0 kernel/time/timekeeping.c:850
ktime_get_ns include/linux/timekeeping.h:169 [inline]
netem_dequeue+0x4df/0x1640 net/sched/sch_netem.c:712
dequeue_skb net/sched/sch_generic.c:293 [inline]
qdisc_restart net/sched/sch_generic.c:398 [inline]
__qdisc_run+0x272/0x2170 net/sched/sch_generic.c:416
__dev_xmit_skb net/core/dev.c:3890 [inline]
__dev_queue_xmit+0x10c0/0x3ed0 net/core/dev.c:4394
dev_queue_xmit include/linux/netdevice.h:3094 [inline]
neigh_hh_output include/net/neighbour.h:526 [inline]
neigh_output include/net/neighbour.h:540 [inline]
ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:236
synproxy_send_client_synack+0x8b8/0xf30 net/netfilter/nf_synproxy_core.c:484
nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59
nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288
nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161
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
NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
__netif_receive_skb_one_core net/core/dev.c:5666 [inline]
__netif_receive_skb+0x2bf/0x650 net/core/dev.c:5779
process_backlog+0x662/0x15b0 net/core/dev.c:6111
__napi_poll+0xcb/0x490 net/core/dev.c:6775
napi_poll net/core/dev.c:6844 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6966
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