rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=033c/1/0x4000000000000000 softirq=53020/53020 fqs=1
rcu: (detected by 0, t=10502 jiffies, g=76377, q=220 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15906 Comm: syz-executor.5 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x477/0x530 kernel/locking/lockdep.c:5725
Code: 44 24 14 8b 54 24 10 e8 07 4b fe ff 5e 5f 65 ff 0d 06 49 9b 7e 0f 85 24 fc ff ff e8 83 07 98 ff e9 21 fc ff ff e8 09 d7 07 00 <84> c0 0f 85 4a fc ff ff 90 0f 0b 90 e9 41 fc ff ff 90 0f 0b 90 e9
RSP: 0018:ffffc900001f0c38 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 1ffff9200003e189 RCX: ffffffff8168761b
RDX: 0000000000000000 RSI: ffffffff8b2f95c0 RDI: ffffffff8ca8ba68
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1e74b62
R10: ffffffff8f3a5b17 R11: ffffffff8acf3060 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff92c4f7d8 R15: 0000000000000000
FS: 00005555570dd480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003bc0 CR3: 0000000021e39000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
debug_object_deactivate+0x138/0x370 lib/debugobjects.c:763
debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
debug_deactivate kernel/time/hrtimer.c:483 [inline]
__run_hrtimer kernel/time/hrtimer.c:1656 [inline]
__hrtimer_run_queues+0x47a/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2d/0x60 kernel/kcov.c:207
Code: fa 65 48 8b 15 f4 ae 7b 7e 65 8b 05 f5 ae 7b 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b <8b> 82 d8 15 00 00 83 f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15
RSP: 0018:ffffc9000375f4e0 EFLAGS: 00000246
RAX: 0000000080000002 RBX: ffffc9000375f568 RCX: ffffffff813a4711
RDX: ffff888023ef3b80 RSI: ffffffff813a471f RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000004 R09: 000000000000df40
R10: 000000000009c000 R11: dffffc0000000000 R12: ffffffff81df4063
R13: 000000000000df40 R14: 000000000009c000 R15: ffffc9000375f59d
orc_find arch/x86/kernel/unwind_orc.c:217 [inline]
unwind_next_frame+0x23f/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:47
kasan_set_track+0x24/0x30 mm/kasan/common.c:61
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582
poison_slab_object+0x119/0x190 mm/kasan/common.c:233
__kasan_slab_free+0x14/0x30 mm/kasan/common.c:241
kasan_slab_free include/linux/kasan.h:183 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4303 [inline]
kmem_cache_free+0x12e/0x360 mm/slub.c:4367
__merge_or_add_vmap_area mm/vmalloc.c:1188 [inline]
merge_or_add_vmap_area mm/vmalloc.c:1207 [inline]
free_vmap_area_noflush+0xaa5/0xda0 mm/vmalloc.c:1833
free_unmap_vmap_area mm/vmalloc.c:1854 [inline]
remove_vm_area+0x28a/0x3f0 mm/vmalloc.c:2705
vfree+0x90/0x7a0 mm/vmalloc.c:2824
copy_entries_to_user net/ipv4/netfilter/ip_tables.c:866 [inline]
get_entries net/ipv4/netfilter/ip_tables.c:1022 [inline]
do_ipt_get_ctl+0x8ac/0xaa0 net/ipv4/netfilter/ip_tables.c:1660
nf_getsockopt+0x76/0xe0 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x186/0x1d0 net/ipv4/ip_sockglue.c:1780
tcp_getsockopt+0x97/0xf0 net/ipv4/tcp.c:4361
do_sock_getsockopt+0x2e1/0x6c0 net/socket.c:2371
__sys_getsockopt+0x1a1/0x270 net/socket.c:2400
__do_sys_getsockopt net/socket.c:2410 [inline]
__se_sys_getsockopt net/socket.c:2407 [inline]
__x64_sys_getsockopt+0xbd/0x150 net/socket.c:2407
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f2e98c7e88a
Code: c4 c1 e0 1a 0d 00 00 04 00 89 01 e9 e0 fe ff ff e8 3b 05 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffd4f275aa8 EFLAGS: 00000216 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffd4f275b30 RCX: 00007f2e98c7e88a
RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffd4f275acc R09: 00007ffd4f275ee7
R10: 00007ffd4f275b30 R11: 0000000000000216 R12: 00007f2e98d7ad00
R13: 00007ffd4f275acc R14: 0000000000000000 R15: 00007f2e98d7cec0
rcu: rcu_preempt kthread starved for 10495 jiffies! g76377 f0x0 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:28256 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6817
schedule_timeout+0x136/0x290 kernel/time/timer.c:2183
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1830
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 22957 Comm: kworker/u4:14 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4dd/0x1570 kernel/smp.c:855
Code: e5 01 89 ee e8 14 c1 0b 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 7e c5 0b 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 44
RSP: 0018:ffffc9000d437920 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8880b9942060 RCX: ffffffff817c4e68
RDX: ffff888084c3d940 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed101732840d
R13: 0000000000000001 R14: ffff8880b9942068 R15: ffff8880b983dec0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c028cee000 CR3: 000000000cf78000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2086 [inline]
text_poke_bp_batch+0x22b/0x750 arch/x86/kernel/alternative.c:2296
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2484 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d7/0x400 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:826 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:818
process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242