sched: DL replenish lagged too much
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10500 ticks this GP) idle=2c5c/1/0x4000000000000000 softirq=21024/3743547 fqs=0
rcu: (t=10500 jiffies g=17965 q=357 ncpus=2)
rcu: rcu_preempt kthread starved for 10500 jiffies! g17965 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:25440 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
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: 7751 Comm: syz.4.535 Not tainted 6.12.0-syzkaller-09084-gef3ba8c258ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:122 [inline]
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:431 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x758/0xdb0 kernel/locking/qspinlock.c:508
Code: 85 a3 01 00 00 48 8b 44 24 28 c6 00 00 48 8b 44 24 10 42 0f b6 04 28 84 c0 0f 85 a8 01 00 00 41 c6 04 24 01 41 bc 00 80 ff ff <42> 0f b6 04 2b 84 c0 75 6c 66 c7 84 24 b0 00 00 00 00 01 48 8b 44
RSP: 0018:ffffc90003577ac0 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 1ffff920006aef6e RCX: ffffc90003577b01
RDX: 0000000000000000 RSI: ffffffff8c0ad8a0 RDI: ffffffff8c6154a0
RBP: ffffc90003577bf8 R08: ffffffff9431f8bf R09: 1ffffffff2863f17
R10: dffffc0000000000 R11: fffffbfff2863f18 R12: 00000000ffffc4c4
R13: dffffc0000000000 R14: ffff8880234094a0 R15: ffffc90003577b80
FS: 00005555624d2500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b315fbff8 CR3: 00000000352fc000 CR4: 00000000003526f0
DR0: 0100000000000000 DR1: 0100000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
spin_lock include/linux/spinlock.h:351 [inline]
lock_for_kill+0xdc/0x210 fs/dcache.c:675
dput+0x18a/0x2b0 fs/dcache.c:865
__fput+0x5ba/0xa50 fs/file_table.c:458
task_work_run+0x24f/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd92fd7e819
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:00007ffd4c84f8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fd92ff37ba0 RCX: 00007fd92fd7e819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fd92ff37ba0 R08: 0000000000023a94 R09: 00007ffd4c84fbaf
R10: 00007fd92ff37ac0 R11: 0000000000000246 R12: 0000000000023b56
R13: 00007fd92ff36400 R14: 0000000000000032 R15: ffffffffffffffff
CPU: 1 UID: 0 PID: 7749 Comm: syz.2.533 Not tainted 6.12.0-syzkaller-09084-gef3ba8c258ee #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5874
Code: 3c 3b 00 74 08 4c 89 f7 e8 a5 7e 8f 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000a189a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000143146 RCX: ffffc90000a18a03
RDX: 0000000000000002 RSI: ffffffff8c0aea80 RDI: ffffffff8c6154a0
RBP: ffffc90000a18ad0 R08: ffffffff901e4037 R09: 1ffffffff203c806
R10: dffffc0000000000 R11: fffffbfff203c807 R12: 1ffff92000143140
R13: 0000000000000246 R14: ffffc90000a18a30 R15: dffffc0000000000
FS: 000055555b25c500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000030bd2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2352 [inline]
bpf_trace_run1+0x370/0x520 kernel/trace/bpf_trace.c:2391
trace_rcu_utilization+0x1b4/0x1e0 include/trace/events/rcu.h:27
rcu_core+0x133/0x17a0 kernel/rcu/tree.c:2795
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:rcu_read_unlock_special+0x88/0x570 kernel/rcu/tree_plugin.h:693
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 19 7b 87 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22
RSP: 0018:ffffc90003e5fc20 EFLAGS: 00000206
RAX: acce8ec18e325000 RBX: 1ffff920007cbf8c RCX: ffffffff81718eba
RDX: dffffc0000000000 RSI: ffffffff8c0ad8a0 RDI: ffffffff8c6154a0
RBP: ffffc90003e5fcf8 R08: ffffffff9431f8bf R09: 1ffffffff2863f17
R10: dffffc0000000000 R11: fffffbfff2863f18 R12: 1ffff920007cbf88
R13: ffff8880303f5e60 R14: ffffc90003e5fc60 R15: 0000000000000000
__rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437
dput+0x197/0x2b0 fs/dcache.c:866
__fput+0x5ba/0xa50 fs/file_table.c:458
task_work_run+0x24f/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7c8997e819
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:00007ffc9a04a5c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f7c89b37ba0 RCX: 00007f7c8997e819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7c89b37ba0 R08: 0000000000018474 R09: 00007ffc9a04a8bf
R10: 00000000005e646c R11: 0000000000000246 R12: 0000000000023b04
R13: 00007f7c89b36080 R14: 0000000000000032 R15: ffffffffffffffff