rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8478/2:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=34749, q=290 ncpus=2)
task:syz-executor.3  state:R  running task     stack:28736 pid:8478  tgid:8476  ppid:5622   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:225
Code: 82 f8 15 00 00 83 f8 02 75 20 48 8b 8a 00 16 00 00 8b 92 fc 15 00 00 48 8b 01 48 83 c0 01 48 39 d0 73 07 48 89 01 48 89 34 c1 <c3> cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000398fa00 EFLAGS: 00000287
RAX: 00000000000056be RBX: ffff88801db91028 RCX: ffffc90013201000
RDX: 0000000000040000 RSI: ffffffff8209ef80 RDI: ffff88801db91078
RBP: ffffc9000398fb08 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000ff3 R11: 0000000000000003 R12: ffff88801ed71c00
R13: ffff88801db70758 R14: ffff88801ed71c20 R15: dffffc0000000000
 __prepend_path fs/d_path.c:132 [inline]
 prepend_path+0x500/0xf50 fs/d_path.c:172
 d_absolute_path+0xff/0x1b0 fs/d_path.c:234
 tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline]
 tomoyo_realpath_from_path+0x36a/0x720 security/tomoyo/realpath.c:271
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x245/0x590 security/tomoyo/file.c:723
 security_file_ioctl+0x75/0xc0 security/security.c:2765
 __do_sys_ioctl fs/ioctl.c:901 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0xbb/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4697e7ce0b
RSP: 002b:00007f4698b47fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4697e7ce0b
RDX: 00007f4698b49070 RSI: 0000000041015500 RDI: 0000000000000003
RBP: 00007f4698b49070 R08: 0000000000000010 R09: 00332e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4698b48040 R14: 0000000020000080 R15: 00007f46980e0320
 </TASK>
rcu: rcu_preempt kthread starved for 10532 jiffies! g34749 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:26144 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
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: 4476 Comm: kworker/u9:1 Not tainted 6.10.0-rc4-syzkaller-00164-g66cc544fd75c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue:  0x0 (krxrpcd)
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:782 [inline]
RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
RIP: 0010:bpf_trace_run1+0x3c4/0x580 kernel/trace/bpf_trace.c:2443
Code: 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 9a 01 00 00 4c 03 2c c5 40 db 4c 8d 49 ff 45 00 4d 01 7d 08 e9 6d fe ff ff e8 6c bb f4 ff <e8> 67 0e db ff 31 ff 41 89 c5 89 c6 e8 fb b5 f4 ff 45 84 ed 0f 85
RSP: 0018:ffffc9000d107988 EFLAGS: 00000093
RAX: 0000000000000000 RBX: ffffc9000304a000 RCX: ffffffff81992681
RDX: ffff88802f250000 RSI: ffffffff81992874 RDI: 0000000000000005
RBP: 1ffff92001a20f32 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc9000304a028 R15: ffffc9000d1079b0
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01a5647f00 CR3: 00000000615da000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __bpf_trace_rcu_utilization+0x8e/0xc0 include/trace/events/rcu.h:27
 trace_rcu_utilization+0xe4/0x160 include/trace/events/rcu.h:27
 rcu_note_context_switch+0x6b/0x1ae0 kernel/rcu/tree_plugin.h:318
 __schedule+0x293/0x5d00 kernel/sched/core.c:6634
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count_add+0x0/0x150 kernel/sched/core.c:5860
Code: 5d c3 cc cc cc cc e8 bf 47 89 09 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 c7 c0 e0 4b b4 94 55 48 ba 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000d107df8 EFLAGS: 00000202
RAX: 0000000000004008 RBX: ffff88802f250000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8b2caf60 RDI: 0000000000000001
RBP: ffffed1005e4a000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8fe43c17 R11: 0000000000000000 R12: ffff88802f25002c
R13: ffff88802f250000 R14: ffffed1005364408 R15: fffffbfff1b01e40
 __schedule_loop kernel/sched/core.c:6821 [inline]
 schedule+0xe0/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>