rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=b75c/1/0x4000000000000000 softirq=44809/44810 fqs=2
rcu: (detected by 1, t=10502 jiffies, g=70173, q=188 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5099 Comm: syz-executor.1 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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:5842 [inline]
RIP: 0010:preempt_count_add+0x52/0x140 kernel/sched/core.c:5868
Code: 3d eb ee a8 7e 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 d5 00 00 00 8b 15 ad a2 47 11 85 d2 75 0b 65 8b 05 ca ee a8 7e 3c f4 77 63 <65> 8b 05 bf ee a8 7e 25 ff ff ff 7f 39 c3 74 03 5b 5d c3 48 8b 5c
RSP: 0018:ffffc90000007e08 EFLAGS: 00000013
RAX: 0000000080010001 RBX: 0000000000000001 RCX: 1ffffffff2544ed4
RDX: 0000000000000000 RSI: ffffffff8176b755 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff8acf3060 R12: ffff8880b982bbc0
R13: ffff888027118340 R14: ffff8880b982bac0 R15: ffffffff88ad04f0
FS: 000055555613d480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01a0f9000 CR3: 00000000835e8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:118 [inline]
_raw_spin_lock_irq+0x1a/0x50 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x2bd/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:stack_trace_consume_entry+0x4/0x160 kernel/stacktrace.c:86
Code: ff ff e8 0f 08 6a 00 e9 bf fc ff ff e8 45 1b 17 09 48 89 df e8 dd 07 6a 00 e9 df fc ff ff 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <48> b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 10 48 89 fa
RSP: 0018:ffffc90003bdf708 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff8aa00087 RCX: ffffffff8132152b
RDX: ffff888027531dc0 RSI: ffffffff8aa00087 RDI: ffffc90003bdf7d8
RBP: ffffc90003bdf7a8 R08: 0000000000000007 R09: 0000000000000000
R10: ffffffff8aa00087 R11: 0000000000000000 R12: ffffc90003bdf718
R13: ffffffff817562b0 R14: ffffc90003bdf7d8 R15: ffff888027531dc0
arch_stack_walk+0xde/0x170 arch/x86/kernel/stacktrace.c:27
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
jbd2_free_handle include/linux/jbd2.h:1600 [inline]
jbd2_journal_stop+0x70d/0xe20 fs/jbd2/transaction.c:1959
__ext4_journal_stop+0xdd/0x200 fs/ext4/ext4_jbd2.c:134
__ext4_unlink+0x66b/0xcb0 fs/ext4/namei.c:3299
ext4_unlink+0x41e/0x5a0 fs/ext4/namei.c:3324
vfs_unlink+0x2f1/0x900 fs/namei.c:4334
do_unlinkat+0x5bc/0x740 fs/namei.c:4398
__do_sys_unlink fs/namei.c:4446 [inline]
__se_sys_unlink fs/namei.c:4444 [inline]
__x64_sys_unlink+0xc7/0x110 fs/namei.c:4444
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: 0033:0x7fc0edc7c497
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe01fddbe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc0edc7c497
RDX: 00007ffe01fddc10 RSI: 00007ffe01fddca0 RDI: 00007ffe01fddca0
RBP: 00007ffe01fddca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe01fded60
R13: 00007fc0edcc83b9 R14: 00000000000b7440 R15: 0000000000000003
rcu: rcu_preempt kthread starved for 10498 jiffies! g70173 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:28352 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: 1 PID: 17441 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:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e4/0x1570 kernel/smp.c:855
Code: 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 e8 7e c5 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 44 0e 00 00 8b 43 08 31
RSP: 0018:ffffc90003227aa0 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8880b9844840 RCX: ffffc9000a34b000
RDX: 0000000000040000 RSI: ffffffff817c4e42 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017308909
R13: 0000000000000001 R14: ffff8880b9844848 R15: ffff8880b993dec0
FS: 00007f06cfbc06c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71206c66e4 CR3: 000000007ef4f000 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: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_slow_inc_cpuslocked+0xe1/0x190 kernel/jump_label.c:165
static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:186
kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1295 [inline]
kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5437 [inline]
kvm_dev_ioctl+0x10c6/0x1bd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5479
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
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: 0033:0x7f06cee7cce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f06cfbc00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f06cef9bf80 RCX: 00007f06cee7cce9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
RBP: 00007f06ceec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f06cef9bf80 R15: 00007ffdf51ea9a8