rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=c75c/1/0x4000000000000000 softirq=42130/42131 fqs=0
rcu: 	(detected by 1, t=10506 jiffies, g=37169, q=186 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7983 Comm: udevd Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1657 [inline]
RIP: 0010:__hrtimer_run_queues+0x43a/0xae0 kernel/time/hrtimer.c:1755
Code: e8 5b c6 12 00 48 39 dd 0f 8f ea 04 00 00 e8 9d c4 12 00 48 c7 c0 98 83 5f 90 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 <48> c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 d8 05 00
RSP: 0018:ffffc90000007e30 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1bc16d674ec86baf RCX: ffffffff905f8398
RDX: dffffc0000000000 RSI: ffffffff817ab7a3 RDI: 0000000000000006
RBP: 180c72a088000000 R08: 0000000000000006 R09: 180c72a088000000
R10: 1bc16d674ec86baf R11: ffffffff8b6f8740 R12: ffff88807b907340
R13: ffff8880b862cac0 R14: ffff8880b862c9c0 R15: ffffffff89320c20
FS:  00007f5f4cb94280(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2a27dc CR3: 00000000314be000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:htab_unlock_bucket kernel/bpf/hashtab.c:181 [inline]
RIP: 0010:htab_lru_map_delete_elem+0x352/0x790 kernel/bpf/hashtab.c:1477
Code: 85 ed 0f 85 1d 02 00 00 e8 cb 2d e1 ff 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 27 30 e1 ff 4d 85 e4 0f 85 f9 02 00 00 <e8> a9 2d e1 ff bf 01 00 00 00 e8 2f d3 af ff 31 ff 65 44 8b 25 1d
RSP: 0018:ffffc900035ef7a8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880500b1000 RCX: ffffffff81ac50ab
RDX: ffff88802c480000 RSI: ffffffff81ac50b9 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000200 R14: fffffffffffffffe R15: 0000000000000004
 bpf_prog_18062990963791d1+0x66/0x6a
 bpf_dispatcher_nop_func include/linux/bpf.h:1265 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2316 [inline]
 bpf_trace_run2+0x231/0x590 kernel/trace/bpf_trace.c:2357
 __traceiter_kfree+0x2d/0x50 include/trace/events/kmem.h:94
 trace_kfree include/trace/events/kmem.h:94 [inline]
 kfree+0x258/0x4b0 mm/slub.c:4714
 tomoyo_realpath_from_path+0xad/0x720 security/tomoyo/realpath.c:250
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path2_perm+0x369/0x710 security/tomoyo/file.c:923
 tomoyo_path_rename+0x102/0x1b0 security/tomoyo/tomoyo.c:300
 security_path_rename+0x18e/0x3c0 security/security.c:2022
 do_renameat2+0x7a0/0xdd0 fs/namei.c:5157
 __do_sys_rename fs/namei.c:5217 [inline]
 __se_sys_rename fs/namei.c:5215 [inline]
 __x64_sys_rename+0x7d/0xa0 fs/namei.c:5215
 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: 0033:0x7f5f4c69a93b
Code: 48 8b 15 f0 64 15 00 83 c8 ff 64 83 3a 15 75 0e 48 8b 7c 24 08 e8 d5 d4 07 00 f7 d8 19 c0 48 83 c4 18 c3 b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 10 48 8b 15 be 64 15 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fffc1897308 EFLAGS: 00000202 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 000055b0d5b42101 RCX: 00007f5f4c69a93b
RDX: 000055b5b4668e46 RSI: 00007fffc1897328 RDI: 00007fffc1897728
RBP: 000055b0ef6bb410 R08: 0000000000000006 R09: b20a1ce5de40633b
R10: 000000000000010f R11: 0000000000000202 R12: 000055b0ef686510
R13: 00007fffc1897328 R14: 00007fffc1897728 R15: 000055b0d5b2cec8
 </TASK>
rcu: rcu_preempt kthread starved for 10506 jiffies! g37169 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:27504 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0xe55/0x5730 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6782
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
 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:
CPU: 1 UID: 0 PID: 11367 Comm: syz.7.1344 Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x45d/0x1300 kernel/smp.c:884
Code: 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 8a 1b 0c 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 a4 0c 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc9000cf4f868 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b8646b80 RCX: ffffffff818160dc
RDX: ffff888050c50000 RSI: ffffffff818160b6 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed10170c8d71
R13: 0000000000000001 R14: ffff8880b8646b88 R15: ffff8880b8740100
FS:  000055558a8c7500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 000000007bbe2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
 text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2295
 text_poke_bp+0xa3/0xd0 arch/x86/kernel/alternative.c:2522
 __static_call_transform+0x34d/0x770 arch/x86/kernel/static_call.c:111
 arch_static_call_transform+0x5d/0xb0 arch/x86/kernel/static_call.c:163
 __static_call_update+0xee/0x660 kernel/static_call_inline.c:147
 tracepoint_update_call kernel/tracepoint.c:317 [inline]
 tracepoint_remove_func kernel/tracepoint.c:441 [inline]
 tracepoint_probe_unregister+0xaaa/0xd30 kernel/tracepoint.c:551
 bpf_raw_tp_link_release+0x35/0x70 kernel/bpf/syscall.c:3479
 bpf_link_free+0x12c/0x2b0 kernel/bpf/syscall.c:3005
 bpf_link_put_direct kernel/bpf/syscall.c:3045 [inline]
 bpf_link_release+0x5d/0x80 kernel/bpf/syscall.c:3052
 __fput+0x3f6/0xb60 fs/file_table.c:431
 task_work_run+0x14e/0x250 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:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f7317e719
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:00007fff6c8bb958 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000006f738 RCX: 00007f9f7317e719
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f9f73337a80 R08: 0000000000000001 R09: 00007fff6c8bbc4f
R10: 00007f9f73000000 R11: 0000000000000246 R12: 000000000006f779
R13: 00007fff6c8bba60 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>