INFO: rcu detected stall in write_comp

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in write_comp_data (2) kernel	1				2	392d	395d	0/29	auto-obsoleted due to no activity on 2024/10/31 20:16
upstream	INFO: rcu detected stall in write_comp_data fs	1	C	done		1	2260d	2258d	0/29	closed as invalid on 2019/08/23 00:21

8021q: adding VLAN 0 to HW filter on device bond451 rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (1 GPs behind) idle=2b6/1/0x4000000000000004 softirq=117498/117501 fqs=0 rcu: (t=10500 jiffies g=162797 q=80) rcu: rcu_preempt kthread starved for 10500 jiffies! g162797 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 29136 10 2 0x80000000 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3559 schedule_timeout+0x4d1/0xf20 kernel/time/timer.c:1806 rcu_gp_kthread+0xcee/0x2060 kernel/rcu/tree.c:2202 kthread+0x34a/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 NMI backtrace for cpu 0 CPU: 0 PID: 1330 Comm: syz-executor.5 Not tainted 4.19.118-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:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x170/0x1bb kernel/rcu/tree.c:1340 print_cpu_stall kernel/rcu/tree.c:1478 [inline] check_cpu_stall kernel/rcu/tree.c:1550 [inline] __rcu_pending kernel/rcu/tree.c:3293 [inline] rcu_pending kernel/rcu/tree.c:3336 [inline] rcu_check_callbacks.cold+0x634/0xddc kernel/rcu/tree.c:2682 update_process_times+0x2a/0x70 kernel/time/timer.c:1638 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168 tick_sched_timer+0x42/0x130 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x2fc/0xd50 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1521 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data+0x0/0x70 kernel/kcov.c:121 Code: 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 <65> 4c 8b 04 25 40 ee 01 00 65 8b 05 d0 43 9a 7e a9 00 01 1f 00 75 RSP: 0018:ffff8880ae607d38 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff81587944 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000004 RBP: 0000000000000100 R08: 0000000000000000 R09: 0000000000000001 R10: ffffed1015cc4732 R11: ffff8880ae623993 R12: ffff8880ae607d70 R13: 1ffff11015cc0faa R14: 0000000000000000 R15: ffff88803e698010 call_timer_fn+0x1f4/0x700 kernel/time/timer.c:1331 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1684 [inline] __run_timers kernel/time/timer.c:1652 [inline] run_timer_softirq+0x5d0/0x1540 kernel/time/timer.c:1697 __do_softirq+0x26c/0x93c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17b/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 </IRQ> RIP: 0010:skip_atoi+0x82/0xe0 lib/vsprintf.c:130 Code: 48 c1 e8 03 83 e2 07 42 0f b6 04 20 38 d0 7f 04 84 c0 75 4b 0f be 43 ff 48 89 da 83 e2 07 44 8d 74 05 d0 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 38 d0 7f 04 84 c0 75 2f 0f be 2b bf 09 00 00 00 83 RSP: 0018:ffff888059b0f878 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff0f1a589 RBX: ffffffff878d2c48 RCX: ffffc90010525000 RDX: 0000000000000000 RSI: ffffffff871b2281 RDI: ffffffff878d2c47 RBP: 000000000000000a R08: ffff88808387e400 R09: ffffed1004016932 R10: ffffed1004016931 R11: ffff8880200b498a R12: dffffc0000000000 R13: ffff888059b0f8e0 R14: 000000000000000a R15: 0000000000000031 format_decode+0x87f/0xad0 lib/vsprintf.c:2062 vsnprintf+0x155/0x14f0 lib/vsprintf.c:2245 seq_vprintf+0xe2/0x1a0 fs/seq_file.c:391 seq_printf+0xbb/0xf0 fs/seq_file.c:406 projid_m_show+0x174/0x220 kernel/user_namespace.c:638 seq_read+0x4b9/0x10f0 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x46b/0x640 fs/read_write.c:925 vfs_readv+0xf0/0x160 fs/read_write.c:987 do_preadv+0x1b6/0x270 fs/read_write.c:1071 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c829 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f11899d2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000004fa1c0 RCX: 000000000045c829 RDX: 00000000000000f2 RSI: 00000000200017c0 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000085c R14: 00000000004cb1c7 R15: 00007f11899d36d4 netlink: 20 bytes leftover after parsing attributes in process `syz-executor.1'.