rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P22018/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=116237, q=115 ncpus=2)
task:syz.2.7151 state:R running task stack:24672 pid:22018 tgid:22018 ppid:11066 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.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]
zap_pte_range mm/memory.c:1688 [inline]
zap_pmd_range mm/memory.c:1736 [inline]
zap_pud_range mm/memory.c:1765 [inline]
zap_p4d_range mm/memory.c:1786 [inline]
unmap_page_range+0x3818/0x42c0 mm/memory.c:1807
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897
exit_mmap+0x264/0xc80 mm/mmap.c:3412
__mmput+0x115/0x380 kernel/fork.c:1345
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x27f0 kernel/exit.c:869
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
__do_sys_exit_group kernel/exit.c:1042 [inline]
__se_sys_exit_group kernel/exit.c:1040 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f54beb79e79
RSP: 002b:00007ffddb7126a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54beb79e79
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffddb7126fc R08: 00007ffddb71278f R09: 00000000000bab4e
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000032
R13: 00000000000bab4e R14: 00000000000bab07 R15: 00007ffddb712750
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g116237 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=55424
rcu: rcu_preempt kthread starved for 10502 jiffies! g116237 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:25816 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f0/0x390 kernel/kthread.c:389
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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10339 Comm: syz.3.2186 Not tainted 6.11.0-rc4-syzkaller-00143-g3d5f968a177d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:lock_is_held_type+0x11f/0x190 kernel/locking/lockdep.c:5833
Code: 48 c7 c7 e0 e6 ea 8b e8 cf 1a 00 00 b8 ff ff ff ff 65 0f c1 05 e2 5b 54 74 83 f8 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b
RSP: 0018:ffffc90000007c48 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff8880291fbc00
RDX: ffff8880291fbc00 RSI: ffffffff8beae6e0 RDI: ffffffff8c3f9980
RBP: 0000000000000001 R08: ffffffff89b4f86b R09: fffff52000000f80
R10: dffffc0000000000 R11: fffff52000000f80 R12: 0000000000000046
R13: ffff8880291fbc00 R14: 00000000ffffffff R15: ffff88807bef6300
FS: 00007fb4747f86c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f04c8ef98 CR3: 000000002dfee000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
advance_sched+0x1c2/0xca0 net/sched/sch_taprio.c:929
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
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 3e 65 3f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 e3 c0 aa f5 65 8b 05 54 95 4b 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90002d5fa60 EFLAGS: 00000206
RAX: c8df0d7659b0f800 RBX: 1ffff920005abf50 RCX: ffffffff8170410a
RDX: dffffc0000000000 RSI: ffffffff8bead560 RDI: 0000000000000001
RBP: ffffc90002d5faf0 R08: ffffffff934f494f R09: 1ffffffff269e929
R10: dffffc0000000000 R11: fffffbfff269e92a R12: dffffc0000000000
R13: 1ffff920005abf4c R14: ffffc90002d5fa80 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock+0x18c/0x1e0 kernel/sched/wait.c:108
io_cqring_wake io_uring/io_uring.h:274 [inline]
io_cq_unlock_post io_uring/io_uring.c:595 [inline]
__io_cqring_overflow_flush+0x504/0x690 io_uring/io_uring.c:633
io_cqring_do_overflow_flush io_uring/io_uring.c:645 [inline]
io_cqring_wait io_uring/io_uring.c:2486 [inline]
__do_sys_io_uring_enter io_uring/io_uring.c:3255 [inline]
__se_sys_io_uring_enter+0x1c36/0x2670 io_uring/io_uring.c:3147
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb474979e79
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:00007fb4747f8038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007fb474b15f80 RCX: 00007fb474979e79
RDX: 0000000000400000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fb4749e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb474b15f80 R15: 00007ffdf72b1fc8