netlink: 'syz-executor.5': attribute type 9 has an invalid length. HTB: quantum of class FFFF0004 is big. Consider r2q change. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10500 ticks this GP) idle=13a/1/0x4000000000000004 softirq=113896/113896 fqs=5007 rcu: (t=10500 jiffies g=157645 q=5429) NMI backtrace for cpu 0 CPU: 0 PID: 8584 Comm: syz-executor.2 Not tainted 4.19.131-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe 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+0x15f/0x19c 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+0x62d/0xe19 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+0xfc/0x290 kernel/time/tick-sched.c:1278 __run_hrtimer kernel/time/hrtimer.c:1401 [inline] __hrtimer_run_queues+0x3f6/0xe60 kernel/time/hrtimer.c:1463 hrtimer_interrupt+0x32a/0x930 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:894 RIP: 0010:rcu_read_unlock_sched_notrace include/linux/rcupdate.h:771 [inline] RIP: 0010:trace_timer_expire_entry include/trace/events/timer.h:90 [inline] RIP: 0010:call_timer_fn+0x579/0x700 kernel/time/timer.c:1325 Code: e8 2c 08 0f 00 45 85 f6 74 20 e8 b2 06 0f 00 44 0f b6 35 82 4b 4c 08 31 ff 44 89 f6 e8 d0 07 0f 00 45 84 f6 0f 84 da 00 00 00 92 06 0f 00 65 ff 0d 1b 4c a7 7e 41 0f 94 c6 31 ff 44 89 f6 e8 RSP: 0018:ffff8880ae607d18 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000103 RBX: ffff88809ab80330 RCX: ffffffff815aa299 RDX: 0000000000000001 RSI: ffff888029334600 RDI: 0000000000000005 RBP: 0000000000000102 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae607d48 R13: 1ffff11015cc0fa5 R14: 0000000000000001 R15: 0000000000000000 expire_timers+0x243/0x4e0 kernel/time/timer.c:1363 __run_timers kernel/time/timer.c:1684 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1697 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 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:894 RIP: 0010:lock_release+0x42e/0x8b0 kernel/locking/lockdep.c:3916 Code: 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 95 03 00 00 48 83 3d 1b d0 80 07 00 0f 84 cc 01 00 00 48 8b 3c 24 57 9d 0f 1f 44 00 00 <48> b8 00 00 00 00 00 fc ff df 49 c7 04 04 00 00 00 00 48 8b 44 24 RSP: 0018:ffff888035d17960 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11a4b69 RBX: ffff888029334600 RCX: 1ffff110052669e5 RDX: dffffc0000000000 RSI: 0000000000000005 RDI: 0000000000000286 RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000000 R11: 00000000d6ea2d8d R12: 1ffff11006ba2f2f R13: 1bc287efd74fb81f R14: ffff888029334600 R15: 0000000000000005 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x17/0x40 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] copy_pte_range mm/memory.c:1110 [inline] copy_pmd_range mm/memory.c:1153 [inline] copy_pud_range mm/memory.c:1187 [inline] copy_p4d_range mm/memory.c:1209 [inline] copy_page_range+0x1304/0x2ff0 mm/memory.c:1271 dup_mmap kernel/fork.c:549 [inline] dup_mm kernel/fork.c:1288 [inline] copy_mm kernel/fork.c:1344 [inline] copy_process.part.0+0x5c40/0x7f40 kernel/fork.c:1897 copy_process kernel/fork.c:1694 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2207 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45cb29 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:00007f83ddea4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00000000004db560 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000044842400 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007c R14: 00000000004c34ba R15: 00007f83ddea56d4