rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=ea9c/1/0x4000000000000000 softirq=27512/27512 fqs=7
(t=10501 jiffies g=37865 q=98 ncpus=2)
rcu: rcu_preempt kthread starved for 10488 jiffies! g37865 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:26680 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8575 Comm: syz-executor.0 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:lockdep_hardirqs_off+0x1c/0x100 kernel/locking/lockdep.c:4389
Code: c7 f6 0f 0b e9 5d ff ff ff e8 a0 fe ff ff 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 83 3d 98 b4 e8 03 00 <0f> 84 8d 00 00 00 49 89 fe 65 8b 05 ac 65 77 75 a9 00 00 f0 00 74
RSP: 0018:ffffc90003fcfe80 EFLAGS: 00000002
RAX: ec5332f3b69e0100 RBX: ffffffff81762204 RCX: 0000000000040000
RDX: ffffc90009f3a000 RSI: 000000000003ffff RDI: ffffffff81762204
RBP: ffffc90003fcff48 R08: ffffffff81b64e6b R09: fffffbfff1ce712e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90003fcff58 R15: ffff8880519b9dc0
FS: 00007f792008c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79200acf00 CR3: 000000005b7d6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_off+0xe/0x40 kernel/trace/trace_preemptirq.c:76
local_irq_disable_exit_to_user include/linux/entry-common.h:191 [inline]
exit_to_user_mode_loop+0xd4/0x100 kernel/entry/common.c:187
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f791f2a46f0
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 9a 9a 04 00 e8 25 78 fa ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f792008bbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f791f3b4128 RCX: 00007f791f27cf69
RDX: 00007f792008bbc0 RSI: 00007f792008bcf0 RDI: 0000000000000021
RBP: 00007f791f3b4120 R08: 00007f792008c6c0 R09: 00007f792008c6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f791f3b412c
R13: 000000000000006e R14: 00007fff56a41c60 R15: 00007fff56a41d48
CPU: 0 PID: 8563 Comm: syz-executor.0 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5124
Code: 37 0b 00 48 83 c4 08 4c 89 f7 e8 98 30 00 00 0f 1f 44 00 00 4c 89 f7 e8 7b 20 36 09 e8 36 26 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:ffffc90003ebf888 EFLAGS: 00000282
RAX: f2cd6dc4f4145300 RBX: ffff888017f8bbb4 RCX: ffffffff91c94103
RDX: dffffc0000000000 RSI: ffffffff8aec01c0 RDI: ffff88802274b3b8
RBP: ffffc90003ebf8d0 R08: dffffc0000000000 R09: ffffed1017307541
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888022749dc0
R13: 1ffff110173076eb R14: ffff8880b983aa00 R15: ffff8880b983b758
FS: 0000555555c52480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79200cdf00 CR3: 000000005b7d6000 CR4: 00000000003506f0
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
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+0xac/0x180 kernel/sched/core.c:6636
Code: 89 f7 e8 f7 83 4e f7 49 8b 3e 48 85 ff 74 0a be 01 00 00 00 e8 65 a5 87 f9 4c 89 e3 48 c1 eb 03 eb 0a 49 f7 04 24 08 00 00 00 <74> 39 bf 01 00 00 00 e8 48 c9 ca f6 31 ff e8 f1 b9 ff ff bf 01 00
RSP: 0018:ffffc90003ebfc18 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff110044e93b8 RCX: ffffffff8a938926
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888022749dc0
RBP: ffffc90003ebfd30 R08: dffffc0000000000 R09: ffffed10044e93b9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888022749dc0
R13: ffffc90003ebfdc0 R14: ffff88802274b038 R15: dffffc0000000000
do_nanosleep+0x192/0x5f0 kernel/time/hrtimer.c:2045
hrtimer_nanosleep+0x24d/0x490 kernel/time/hrtimer.c:2098
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1308 [inline]
__se_sys_clock_nanosleep+0x323/0x3b0 kernel/time/posix-timers.c:1285
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: 0033:0x7f791f2a8375
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fff56a41dc0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007f791f3b3f80 RCX: 00007f791f2a8375
RDX: 00007fff56a41e00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f791f3b5980 R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000050e7b
R13: 00007f791f3b412c R14: 0000000000000032 R15: 00007f791f3b5980