rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=92cc/1/0x4000000000000000 softirq=62580/62585 fqs=0
rcu: (detected by 1, t=10506 jiffies, g=63705, q=225 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15105 Comm: syz.6.2239 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x1a/0x1a0 mm/kasan/generic.c:188
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 50 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 <53> 0f 82 c6 00 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 f8 0f 83
RSP: 0018:ffffc90000007ac8 EFLAGS: 00000082
RAX: ffffffff96e49cc8 RBX: 0000000000000000 RCX: ffffffff816a7e9e
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff96e49cc0
RBP: ffffffff96e4f860 R08: 0000000000000000 R09: fffffbfff2dc9398
R10: ffffffff96e49cc7 R11: 0000000000000002 R12: ffffed100ceef5e3
R13: ffff88806777a440 R14: 0000000000000002 R15: ffff88806777af70
FS: 00007f24123666c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c30c9b3 CR3: 000000002415a000 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+0x4e/0x130 kernel/locking/lockdep.c:228
lookup_chain_cache_add kernel/locking/lockdep.c:3816 [inline]
validate_chain kernel/locking/lockdep.c:3872 [inline]
__lock_acquire+0x15a9/0x3c40 kernel/locking/lockdep.c:5226
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
debug_object_deactivate+0x13b/0x370 lib/debugobjects.c:873
debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
debug_deactivate kernel/time/hrtimer.c:475 [inline]
__run_hrtimer kernel/time/hrtimer.c:1707 [inline]
__hrtimer_run_queues+0x47c/0xae0 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x55/0x380 kernel/locking/lockdep.c:5814
Code: 08 b3 8a b5 41 48 8d 5c 24 08 48 c7 44 24 10 74 e2 93 8d 48 c1 eb 03 48 c7 44 24 18 c0 73 6b 81 48 8d 04 13 c7 00 f1 f1 f1 f1 40 04 f1 f1 00 00 c7 40 08 00 00 00 f3 c7 40 0c f3 f3 f3 f3 65
RSP: 0018:ffffc900030a7570 EFLAGS: 00000a06
RAX: fffff52000614eaf RBX: 1ffff92000614eaf RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8e1bba20
RBP: ffff88803326fa10 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff905f5c17 R11: 00000000ffff0000 R12: 0000000000000000
R13: ffffffff8e1bba20 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock_bh include/linux/rcupdate.h:903 [inline]
__dev_queue_xmit+0x29c/0x43e0 net/core/dev.c:4359
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
__netlink_deliver_tap_skb net/netlink/af_netlink.c:307 [inline]
__netlink_deliver_tap net/netlink/af_netlink.c:325 [inline]
netlink_deliver_tap+0xa87/0xd30 net/netlink/af_netlink.c:338
netlink_deliver_tap_kernel net/netlink/af_netlink.c:347 [inline]
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x5e1/0x7f0 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891
sock_sendmsg_nosec net/socket.c:711 [inline]
__sock_sendmsg net/socket.c:726 [inline]
____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583
___sys_sendmsg+0x135/0x1e0 net/socket.c:2637
__sys_sendmsg+0x16e/0x220 net/socket.c:2669
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f241157e819
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2412366038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2411735fa0 RCX: 00007f241157e819
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f24115f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2411735fa0 R15: 00007fff8d7c3308
rcu: rcu_preempt kthread starved for 10506 jiffies! g63705 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:27232 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 1 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x458/0x1300 kernel/smp.c:884
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 ba 11 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 a7 0c 00 00 8b 43 08 31
RSP: 0018:ffffc90000107998 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b86469c0 RCX: ffffffff8182a93c
RDX: ffff88801cef2440 RSI: ffffffff8182a916 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffed10170c8d39
R13: 0000000000000001 R14: ffff8880b86469c8 R15: ffff8880b873fe40
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e0e05f270 CR3: 000000000df7e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2324
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2512 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d7/0x400 kernel/jump_label.c:920
static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate mm/kfence/core.c:849 [inline]
toggle_allocation_gate+0xfc/0x260 mm/kfence/core.c:841
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244