rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=81ec/1/0x4000000000000000 softirq=100108/100109 fqs=0
rcu: 	(detected by 0, t=10505 jiffies, g=147617, q=198 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 23343 Comm: sed Not tainted 6.11.0-rc1-syzkaller-00062-ge4fc196f5ba3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:hlock_id kernel/locking/lockdep.c:429 [inline]
RIP: 0010:__lock_acquire+0xac7/0x3cb0 kernel/locking/lockdep.c:5130
Code: 04 02 84 c0 74 08 3c 03 0f 8e 2b 2c 00 00 41 0f b7 45 20 66 25 ff 1f 66 89 44 24 20 41 0f b6 45 22 83 e0 03 48 83 7c 24 10 00 <88> 44 24 38 0f 84 b8 00 00 00 65 4c 8b 25 d7 ab 9b 7e 4d 8d 84 24
RSP: 0018:ffffc90000a18b30 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ebf5dd3ec2bf753a RCX: ffffffff816832a8
RDX: 1ffff11004ba152f RSI: 0000000000000008 RDI: ffff888025d0a979
RBP: 0000000000000040 R08: 0000000000000000 R09: fffffbfff28c510f
R10: ffffffff9462887f R11: 0000000000000000 R12: ffff888025d0a951
R13: ffff888025d0a958 R14: 0000000000000002 R15: ffff888025d09e00
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003c80 CR3: 000000002ee9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5759 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5724
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0xd8/0xc60 net/sched/sch_taprio.c:924
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 d6 11 54 f6 48 89 df e8 ee 8e 54 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 35 05 46 f6 65 8b 05 d6 86 ef 74 85 c0 74 16 5b
RSP: 0018:ffffc90003caf260 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff8e89de40 RCX: 1ffffffff28cd570
RDX: 0000000000000000 RSI: ffffffff8b4cc580 RDI: ffffffff8bb08480
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff28c50ed
R10: ffffffff9462876f R11: ffffffff81e77054 R12: 0000000000000000
R13: ffffc90003caf2d8 R14: 0000000000000019 R15: 00000000000000f0
 stack_depot_save_flags+0x31b/0x8f0 lib/stackdepot.c:662
 kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
 journal_alloc_journal_head fs/jbd2/journal.c:2862 [inline]
 jbd2_journal_add_journal_head+0x1e0/0x680 fs/jbd2/journal.c:2931
 jbd2_journal_get_write_access+0x1c6/0x280 fs/jbd2/transaction.c:1241
 __ext4_journal_get_write_access+0x6a/0x390 fs/ext4/ext4_jbd2.c:239
 ext4_reserve_inode_write+0x13b/0x270 fs/ext4/inode.c:5803
 __ext4_mark_inode_dirty+0x1a6/0x890 fs/ext4/inode.c:5977
 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6014
 __mark_inode_dirty+0x1f0/0xe70 fs/fs-writeback.c:2486
 generic_update_time+0xcf/0xf0 fs/inode.c:1969
 inode_update_time fs/inode.c:1982 [inline]
 touch_atime+0x4ee/0x5d0 fs/inode.c:2054
 file_accessed include/linux/fs.h:2480 [inline]
 ext4_file_mmap+0x514/0x6c0 fs/ext4/file.c:797
 call_mmap include/linux/fs.h:2129 [inline]
 mmap_region+0x757/0x2760 mm/mmap.c:2957
 do_mmap+0xbfb/0xfb0 mm/mmap.c:1468
 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588
 vm_mmap+0x8e/0xc0 mm/util.c:607
 elf_map fs/binfmt_elf.c:385 [inline]
 elf_load+0x19a/0x880 fs/binfmt_elf.c:408
 load_elf_interp fs/binfmt_elf.c:675 [inline]
 load_elf_binary+0x339e/0x4d90 fs/binfmt_elf.c:1235
 search_binary_handler fs/exec.c:1821 [inline]
 exec_binprm fs/exec.c:1863 [inline]
 bprm_execve fs/exec.c:1914 [inline]
 bprm_execve+0x703/0x1960 fs/exec.c:1890
 do_execveat_common.isra.0+0x4f1/0x630 fs/exec.c:2021
 do_execve fs/exec.c:2095 [inline]
 __do_sys_execve fs/exec.c:2171 [inline]
 __se_sys_execve fs/exec.c:2166 [inline]
 __x64_sys_execve+0x8c/0xb0 fs/exec.c:2166
 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: 0033:0x7f09d4c04ef7
Code: Unable to access opcode bytes at 0x7f09d4c04ecd.
RSP: 002b:00007ffc8de889c8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 000055ade46eac80 RCX: 00007f09d4c04ef7
RDX: 000055ade46eacc8 RSI: 000055ade46eac80 RDI: 000055ade46ead58
RBP: 000055ade46ead58 R08: 000055ade46ead5d R09: 00007ffc8de8cea6
R10: 00007f09d4e03088 R11: 0000000000000246 R12: 000055ade46eacc8
R13: 00007f09d4db2904 R14: 000055ade46eacc8 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10505 jiffies! g147617 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:26144 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 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: 0 UID: 0 PID: 2502 Comm: kworker/u8:7 Not tainted 6.11.0-rc1-syzkaller-00062-ge4fc196f5ba3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:312 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e7/0x1420 kernel/smp.c:856
Code: 0c 00 85 ed 74 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 4b 39 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 f7 0c 00 00 8b 43 08 31
RSP: 0018:ffffc900092e7908 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9344b80 RCX: ffffffff817e420b
RDX: ffff88802a3e9e00 RSI: ffffffff817e41e5 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017268971
R13: 0000000000000001 R14: ffff8880b9344b88 R15: ffff8880b923ffc0
FS:  0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000209ea000 CR3: 000000000db7c000 CR4: 00000000003506f0
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:1023
 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_flush arch/x86/kernel/alternative.c:2486 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2483 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2493
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x1d7/0x400 kernel/jump_label.c:900
 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210
 static_key_enable+0x1a/0x20 kernel/jump_label.c:223
 toggle_allocation_gate mm/kfence/core.c:833 [inline]
 toggle_allocation_gate+0xf8/0x250 mm/kfence/core.c:825
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 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>