rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10500 ticks this GP) idle=6ab4/1/0x4000000000000000 softirq=27484/27484 fqs=8
(t=10502 jiffies g=35201 q=132 ncpus=2)
rcu: rcu_preempt kthread starved for 10487 jiffies! g35201 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:26048 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
irqentry_exit+0x53/0x80 kernel/entry/common.c:439
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:schedule+0xae/0x180 kernel/sched/core.c:6633
Code: e8 47 79 4e f7 49 8b 3e 48 85 ff 74 0a be 01 00 00 00 e8 75 a8 87 f9 4c 89 e3 48 c1 eb 03 eb 0a 49 f7 04 24 08 00 00 00 74 39 01 00 00 00 e8 48 c6 ca f6 31 ff e8 f1 b9 ff ff bf 01 00 00 00
RSP: 0018:ffffc90000157b98 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff11027fddb28 RCX: ffffffff8a939aa6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813feed940
RBP: ffffc90000157cb0 R08: dffffc0000000000 R09: ffffed1027fddb29
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88813feed940
R13: 1ffff9200002af78 R14: ffff88813feeebb8 R15: dffffc0000000000
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6119 Comm: syz-executor.4 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:trace_irq_disable include/trace/events/preemptirq.h:36 [inline]
RIP: 0010:trace_hardirqs_off_finish+0x83/0x1a0 kernel/trace/trace_preemptirq.c:67
Code: 1d 6a 34 e2 0c 76 35 89 db 48 89 d8 48 c1 e8 06 48 8d 3c c5 28 8a 73 8e be 08 00 00 00 e8 45 bd 50 00 48 0f a3 1d 35 32 e2 0c <73> 09 e8 36 f3 e1 ff 84 c0 74 0b 5b 41 5e 41 5f 5d c3 0f 0b eb c7
RSP: 0018:ffffc9000553fed0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff819157eb
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e738a28
RBP: ffffc9000553ff48 R08: dffffc0000000000 R09: fffffbfff1ce7146
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000027 R14: ffffc9000553ff58 R15: 0000000000000000
FS: 00007f624ad346c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d229000 CR3: 0000000027820000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__enter_from_user_mode kernel/entry/common.c:29 [inline]
syscall_enter_from_user_mode+0x29/0x230 kernel/entry/common.c:114
do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:77
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f624a07a6a7
Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d b2 01 c7 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b3 68 fd ff 0f 1f 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 66 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007f624ad33b88 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 00007f624ad33cf0 RCX: 00007f624a07a6a7
RDX: 00007f624ad33bc0 RSI: 00007f624ad33cf0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007f624ad346c0 R09: 00007f624ad346c0
R10: 0000000000000000 R11: 0000000000000206 R12: 00007f624a1b405c
R13: 000000000000006e R14: 00007ffd9e4793d0 R15: 00007ffd9e4794b8
CPU: 1 PID: 6115 Comm: syz-executor.4 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5124
Code: 2e 0b 00 48 83 c4 08 4c 89 f7 e8 98 30 00 00 0f 1f 44 00 00 4c 89 f7 e8 7b 23 36 09 e8 06 1e 32 00 fb 49 8d bc 24 f8 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90005ac78a8 EFLAGS: 00000286
RAX: 01efcea135c90f00 RBX: ffff88801fa78034 RCX: ffffffff91c95103
RDX: dffffc0000000000 RSI: ffffffff8aec0240 RDI: ffff88802113d178
RBP: ffffc90005ac78f0 R08: dffffc0000000000 R09: ffffed1017327541
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802113bb80
R13: 1ffff110173276eb R14: ffff8880b993aa00 R15: ffff8880b993b758
FS: 00007f624ad556c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f624ad54f80 CR3: 0000000027820000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x1435/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
futex_wait_queue+0x149/0x1d0 kernel/futex/waitwake.c:355
futex_wait+0x203/0x5c0 kernel/futex/waitwake.c:656
do_futex+0x3b5/0x490 kernel/futex/syscalls.c:106
__do_sys_futex kernel/futex/syscalls.c:183 [inline]
__se_sys_futex+0x3d7/0x460 kernel/futex/syscalls.c:164
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f624a07cf29
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:00007f624ad55178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f624a1b3f88 RCX: 00007f624a07cf29
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f624a1b3f88
RBP: 00007f624a1b3f80 R08: 00007f624ad556c0 R09: 00007f624ad556c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f624a1b3f8c
R13: 000000000000000b R14: 00007ffd9e4793d0 R15: 00007ffd9e4794b8