INFO: rcu detected stall in sys

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in sys_getdents (2) bfs ntfs3	1				2	360d	367d	0/29	auto-obsoleted due to no activity on 2024/09/20 03:19

hrtimer: interrupt took 8324755138 ns rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (1 GPs behind) idle=efb/1/0x4000000000000000 softirq=78157/78158 fqs=1 (t=12476 jiffies g=138125 q=1706) rcu: rcu_preempt kthread timer wakeup didn't happen for 11693 jiffies! g138125 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=50028 rcu: rcu_preempt kthread starved for 11694 jiffies! g138125 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28008 pid: 14 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> 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: 9233 Comm: kworker/0:11 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events fqdir_free_fn RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_single+0x1b5/0x4b0 kernel/smp.c:758 Code: 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 bc fa ff ff 41 89 c5 eb 07 e8 72 6e 0b 00 f3 90 44 8b 64 24 48 <31> ff 41 83 e4 01 44 89 e6 e8 9d 75 0b 00 45 85 e4 75 e1 e8 53 6e RSP: 0018:ffffc90004e2fbc0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff920009c5f7c RCX: 0000000000000000 RDX: ffff8880184a1d00 RSI: ffffffff816c041e RDI: 0000000000000003 RBP: ffffc90004e2fc90 R08: 0000000000000000 R09: ffffffff8fd38a07 R10: ffffffff816c0433 R11: 0000000000000000 R12: 0000000000000011 R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880b9d3a900 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556234848 CR3: 000000007313d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> rcu_barrier+0x2a6/0x440 kernel/rcu/tree.c:4024 fqdir_free_fn+0x2e/0x160 net/ipv4/inet_fragment.c:163 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> NMI backtrace for cpu 1 CPU: 1 PID: 2941 Comm: systemd-udevd Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline] check_cpu_stall kernel/rcu/tree_stall.h:711 [inline] rcu_pending kernel/rcu/tree.c:3878 [inline] rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597 update_process_times+0x16d/0x200 kernel/time/timer.c:1785 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 5a 6d 22 f8 48 89 ef e8 a2 e3 22 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 43 ab 15 f8 65 8b 05 1c 42 c8 76 85 c0 74 0a 5b 5d c3 e8 40 7f RSP: 0018:ffffc90002b8fc30 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1fae6ce RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff8bb56ef8 R08: 0000000000000001 R09: ffffffff8fd38a9f R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000246 R13: ffffc90002b8fc68 R14: ffffffff8bb56f38 R15: ffffffff8bb56ef8 rwsem_wake.isra.0+0xbb/0x110 kernel/locking/rwsem.c:1189 __up_read+0x2b5/0x720 kernel/locking/rwsem.c:1311 kernfs_fop_readdir+0x481/0x890 fs/kernfs/dir.c:1723 iterate_dir+0x576/0x700 fs/readdir.c:65 __do_sys_getdents fs/readdir.c:286 [inline] __se_sys_getdents fs/readdir.c:271 [inline] __x64_sys_getdents+0x13a/0x2b0 fs/readdir.c:271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0c44ae8f2b Code: fc ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 57 41 56 48 63 ff 41 55 41 54 b8 4e 00 00 00 55 53 48 89 f3 48 83 ec 08 0f 05 <48> 3d 00 f0 ff ff 77 55 48 8d 2c 06 49 89 c4 48 39 ee 73 34 90 44 RSP: 002b:00007ffdb0bd1be0 EFLAGS: 00000202 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 000055f60d82d7f0 RCX: 00007f0c44ae8f2b RDX: 0000000000008000 RSI: 000055f60d82d7f0 RDI: 000000000000000f RBP: 000055f60d82d7f0 R08: 00007f0c44dcf308 R09: 0000000000008040 R10: 00007f0c44dceb58 R11: 0000000000000202 R12: fffffffffffffe50 R13: 0000000000000000 R14: 00000000000000ff R15: 000055f60d814400 </TASK> ---------------- Code disassembly (best guess): 0: 48 8d 74 24 40 lea 0x40(%rsp),%rsi 5: 48 89 44 24 50 mov %rax,0x50(%rsp) a: 48 8b 44 24 08 mov 0x8(%rsp),%rax f: 48 89 44 24 58 mov %rax,0x58(%rsp) 14: e8 bc fa ff ff callq 0xfffffad5 19: 41 89 c5 mov %eax,%r13d 1c: eb 07 jmp 0x25 1e: e8 72 6e 0b 00 callq 0xb6e95 23: f3 90 pause 25: 44 8b 64 24 48 mov 0x48(%rsp),%r12d * 2a: 31 ff xor %edi,%edi <-- trapping instruction 2c: 41 83 e4 01 and $0x1,%r12d 30: 44 89 e6 mov %r12d,%esi 33: e8 9d 75 0b 00 callq 0xb75d5 38: 45 85 e4 test %r12d,%r12d 3b: 75 e1 jne 0x1e 3d: e8 .byte 0xe8 3e: 53 push %rbx 3f: 6e outsb %ds:(%rsi),(%dx)