rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=d464/1/0x4000000000000000 softirq=20096/20097 fqs=29
rcu: (detected by 1, t=10502 jiffies, g=26213, q=977 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8930 Comm: modprobe Not tainted 6.9.0-rc6-syzkaller-00132-g9adcac650618 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lock_release+0x21a/0x9f0 kernel/locking/lockdep.c:5774
Code: 48 c1 e8 03 48 89 44 24 48 42 0f b6 04 38 84 c0 0f 85 76 05 00 00 41 8b 06 85 c0 0f 84 40 02 00 00 4c 89 34 24 48 89 54 24 10 <48> 89 5c 24 28 4c 89 64 24 08 48 89 44 24 38 8d 58 ff 4d 8d b5 d8
RSP: 0018:ffffc90000007b40 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000046 RCX: ffffc90000007b03
RDX: 1ffff92000000f78 RSI: ffffffff8bcac580 RDI: ffffffff8c1f7ee0
RBP: ffffc90000007c70 R08: ffffffff8fa8fa2f R09: 1ffffffff1f51f45
R10: dffffc0000000000 R11: fffffbfff1f51f46 R12: 1ffff92000000f74
R13: ffff88802d7c5a00 R14: ffff88802d7c64d0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd5b71ff7c CR3: 0000000065f9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
advance_sched+0x9b4/0xca0 net/sched/sch_taprio.c:981
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:206
Code: 8b 3d 0c f1 3e 0c 48 89 de 5b e9 73 2b 59 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 c0 d3 03 00 65 8b 15 f0 c2 6d 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc900138077c0 EFLAGS: 00000202
RAX: ffffffff81416a31 RBX: ffffffff90383e20 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc90013807e10
RBP: ffffc900138078a0 R08: ffffffff81417d6b R09: ffffffff814168df
R10: 0000000000000003 R11: ffff88802d7c5a00 R12: ffffc90013807e18
R13: dffffc0000000000 R14: ffffc900138078f0 R15: 1ffff92002700f14
unwind_next_frame+0x1ac1/0x2a00 arch/x86/kernel/unwind_orc.c:648
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
getname_flags+0xbd/0x4f0 fs/namei.c:139
do_sys_openat2+0xd2/0x1d0 fs/open.c:1400
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff42f4eda46
Code: 10 00 00 00 44 8b 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 0a 48 01 00 48 83 c8 ff c3 31
RSP: 002b:00007ffd5b71f818 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffd5b71fa78 RCX: 00007ff42f4eda46
RDX: 0000000000080000 RSI: 00007ffd5b71f890 RDI: 00000000ffffff9c
RBP: 00007ffd5b71f880 R08: 0000000000080000 R09: 00007ffd5b71f890
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd5b71f890
R13: 0000000000000001 R14: 00007ffd5b71fa5f R15: 00000000ffffffff
rcu: rcu_preempt kthread starved for 10435 jiffies! g26213 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:25296 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
kthread+0x2f0/0x390 kernel/kthread.c:388
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: 1 PID: 8942 Comm: syz-executor.2 Not tainted 6.9.0-rc6-syzkaller-00132-g9adcac650618 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 15 db 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 c0 d6 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 a4 d6
RSP: 0018:ffffc900133c7960 EFLAGS: 00000246
RAX: ffffffff818a3a1c RBX: 1ffff11017288c45 RCX: 0000000000040000
RDX: ffffc90003549000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900133c7b60 R08: ffffffff818a39eb R09: 1ffffffff25e6aa0
R10: dffffc0000000000 R11: fffffbfff25e6aa1 R12: dffffc0000000000
R13: ffff8880b9446228 R14: ffff8880b953f7c0 R15: 0000000000000000
FS: 00007f780e76c6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f780dadd950 CR3: 0000000066bec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 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+0x352/0xb30 arch/x86/kernel/alternative.c:2296
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_slow_inc_cpuslocked+0xb3/0x150 kernel/jump_label.c:165
static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:186
bpf_enable_runtime_stats kernel/bpf/syscall.c:5491 [inline]
bpf_enable_stats+0xfe/0x140 kernel/bpf/syscall.c:5510
__sys_bpf+0x75b/0x810 kernel/bpf/syscall.c:5743
__do_sys_bpf kernel/bpf/syscall.c:5767 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5765 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5765
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f780da7dca9
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:00007f780e76c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f780dbabf80 RCX: 00007f780da7dca9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00007f780dac947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000004d R14: 00007f780dbabf80 R15: 00007ffef7909a58