rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8953/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=38673, q=355 ncpus=2)
task:syz-executor.2 state:R running task stack:20240 pid:8953 tgid:8953 ppid:8937 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6925
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6949
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1177 [inline]
copy_pmd_range mm/memory.c:1238 [inline]
copy_pud_range mm/memory.c:1275 [inline]
copy_p4d_range mm/memory.c:1299 [inline]
copy_page_range+0x502f/0x5c40 mm/memory.c:1397
dup_mmap kernel/fork.c:747 [inline]
dup_mm kernel/fork.c:1687 [inline]
copy_mm+0x120d/0x1fd0 kernel/fork.c:1736
copy_process+0x187a/0x3dc0 kernel/fork.c:2389
kernel_clone+0x226/0x8f0 kernel/fork.c:2796
__do_sys_clone kernel/fork.c:2939 [inline]
__se_sys_clone kernel/fork.c:2923 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:2923
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x72/0x7a
RIP: 0033:0x7f64bce7ae93
RSP: 002b:00007ffed6ed86c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64bce7ae93
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000555567164750 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g38673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=16527
rcu: rcu_preempt kthread starved for 10502 jiffies! g38673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:24592 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:1683
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1882
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:243
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9826 Comm: syz-executor.4 Not tainted 6.9.0-rc2-next-20240405-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x5a/0xb0 kernel/rcu/tree.c:721
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 ec bc 7e 00 48 c7 c3 c8 7c 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 22 8b 03 65 ff 0d 71 f3 87 7e 74 10 83 e0 04 c1 e8 02 5b
RSP: 0018:ffffc90000a08a00 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff8880b9537cc8 RCX: ffffffff81722be0
RDX: 0000000000000000 RSI: ffffffff8c1f9f40 RDI: ffffffff8c1f9f00
RBP: ffffc90000a08b50 R08: ffffffff8fac016f R09: 1ffffffff1f5802d
R10: dffffc0000000000 R11: fffffbfff1f5802e R12: 1ffff92000141150
R13: ffffffff84b62ba4 R14: ffffffff8dd8d9d8 R15: dffffc0000000000
FS: 00007f8d01e606c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f64bdad56c6 CR3: 0000000024c66000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xbf/0x9f0 kernel/locking/lockdep.c:5765
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
debug_object_activate+0x3e4/0x510 lib/debugobjects.c:726
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090
__run_hrtimer kernel/time/hrtimer.c:1709 [inline]
__hrtimer_run_queues+0x6d5/0xd50 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 5e 0e 6c f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 b3 c5 d6 f5 65 8b 05 e4 44 75 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90003397900 EFLAGS: 00000206
RAX: 2f037e5e0841d300 RBX: 1ffff92000672f24 RCX: ffffffff817277aa
RDX: dffffc0000000000 RSI: ffffffff8bcad640 RDI: 0000000000000001
RBP: ffffc90003397990 R08: ffffffff92f73527 R09: 1ffffffff25ee6a4
R10: dffffc0000000000 R11: fffffbfff25ee6a5 R12: dffffc0000000000
R13: 1ffff92000672f20 R14: ffffc90003397920 R15: 0000000000000246
clock_was_set+0x6a4/0x830 kernel/time/hrtimer.c:973
timekeeping_inject_offset+0x4e8/0x580 kernel/time/timekeeping.c:1396
do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2445
do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
__do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
__se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
__x64_sys_clock_adjtime+0x1e1/0x290 kernel/time/posix-timers.c:1162
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x72/0x7a
RIP: 0033:0x7f8d0107de69
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:00007f8d01e600c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f8d011ac1f0 RCX: 00007f8d0107de69
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f8d010ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8d011ac1f0 R15: 00007ffc17e36128