rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 0, t=10502 jiffies, g=23001, q=174) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294989238-4294978736), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g23001 f0x2 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:29184 pid: 13 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4324 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5075 schedule+0xcf/0x270 kernel/sched/core.c:5154 schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892 rcu_gp_fqs_loop kernel/rcu/tree.c:2005 [inline] rcu_gp_kthread+0xd07/0x2250 kernel/rcu/tree.c:2178 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 13495 Comm: syz-executor.4 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0xfa/0x151 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_check_gp_kthread_starvation+0x1c7/0x1e4 kernel/rcu/tree_stall.h:478 print_other_cpu_stall kernel/rcu/tree_stall.h:582 [inline] check_cpu_stall kernel/rcu/tree_stall.h:706 [inline] rcu_pending kernel/rcu/tree.c:3830 [inline] rcu_sched_clock_irq.cold+0x9a3/0x11dd kernel/rcu/tree.c:2650 update_process_times+0x16d/0x200 kernel/time/timer.c:1796 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1369 __run_hrtimer kernel/time/hrtimer.c:1519 [inline] __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1583 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline] __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:skb_update_prio net/core/dev.c:3864 [inline] RIP: 0010:__dev_queue_xmit+0x1000/0x2e00 net/core/dev.c:4124 Code: 80 3c 02 00 0f 85 99 1a 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 10 48 8d bb 38 0b 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 4e 1a 00 00 4c 8b b3 38 0b 00 00 e8 ce 62 04 02 31 ff 89 c3 RSP: 0018:ffffc900000077e0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806c3bc000 RCX: 0000000000000100 RDX: 1ffff1100d877967 RSI: ffffffff86fcfe15 RDI: ffff88806c3bcb38 RBP: ffff888012e738c0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff86fcf0da R11: 0000000000000000 R12: ffff888012e73976 R13: ffff888012e7394c R14: ffff888012e738d0 R15: 000000000000000e neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0x8d5/0x16b0 net/ipv6/ip6_output.c:117 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ndisc_send_skb+0xa99/0x1750 net/ipv6/ndisc.c:508 ndisc_send_rs+0x12e/0x6f0 net/ipv6/ndisc.c:702 addrconf_rs_timer+0x3f2/0x820 net/ipv6/addrconf.c:3877 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1431 expire_timers kernel/time/timer.c:1476 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1745 __run_timers kernel/time/timer.c:1726 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:mm_update_next_owner+0x44e/0x7a0 kernel/exit.c:388 Code: fb ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 02 00 00 44 8b b5 dc fb ff ff <31> ff 41 81 e6 00 00 20 00 44 89 f6 e8 61 eb 2e 00 45 85 f6 0f 85 RSP: 0018:ffffc9000202fb18 EFLAGS: 00000246 RAX: 0000000000000007 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81447020 RDI: ffff88801d94d36c RBP: ffff88801d94d790 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff8144705f R11: 0000000000000001 R12: ffff888022e8b100 R13: ffff88801d94d340 R14: 0000000000208040 R15: ffff888140760010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb67/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x42c/0x2100 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ef9 Code: Unable to access opcode bytes at RIP 0x465ecf. RSP: 002b:00007f219b473218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000056bf68 RCX: 0000000000465ef9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007ffe1b363fdf R14: 00007f219b473300 R15: 0000000000022000 ================================ WARNING: inconsistent lock state 5.11.0-syzkaller #0 Not tainted -------------------------------- inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. syz-executor.4/13495 [HC0[0]:SC1[5]:HE0:SE0] takes: ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: print_other_cpu_stall kernel/rcu/tree_stall.h:541 [inline] ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: check_cpu_stall kernel/rcu/tree_stall.h:706 [inline] ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: rcu_pending kernel/rcu/tree.c:3830 [inline] ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: rcu_sched_clock_irq.cold+0x2b9/0x11dd kernel/rcu/tree.c:2650 {IN-HARDIRQ-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5510 [inline] lock_acquire+0x1ab/0x730 kernel/locking/lockdep.c:5475 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159 rcu_report_exp_cpu_mult+0x73/0x3a0 kernel/rcu/tree_exp.h:237 flush_smp_call_function_queue+0x34b/0x640 kernel/smp.c:426 __sysvec_call_function_single+0x95/0x3d0 arch/x86/kernel/smp.c:248 asm_call_irq_on_stack+0xf/0x20 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline] run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline] sysvec_call_function_single+0xbd/0x100 arch/x86/kernel/smp.c:243 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:643 allocate_slab+0x2d/0x4a0 mm/slub.c:1745 new_slab mm/slub.c:1821 [inline] new_slab_objects mm/slub.c:2578 [inline] ___slab_alloc+0x476/0x790 mm/slub.c:2741 __slab_alloc.constprop.0+0x8a/0xd0 mm/slub.c:2781 slab_alloc_node mm/slub.c:2857 [inline] slab_alloc mm/slub.c:2900 [inline] kmem_cache_alloc+0x373/0x440 mm/slub.c:2905 vm_area_alloc+0x1c/0x110 kernel/fork.c:348 __bprm_mm_init fs/exec.c:255 [inline] bprm_mm_init fs/exec.c:379 [inline] alloc_bprm+0x33e/0x8f0 fs/exec.c:1519 kernel_execve+0x55/0x460 fs/exec.c:1936 call_usermodehelper_exec_async+0x2de/0x580 kernel/umh.c:110 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 irq event stamp: 14909931 hardirqs last enabled at (14909930): [] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:661 hardirqs last disabled at (14909931): [] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1100 softirqs last enabled at (14432950): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (14432953): [] asm_call_irq_on_stack+0xf/0x20 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rcu_node_0); lock(rcu_node_0); *** DEADLOCK *** 6 locks held by syz-executor.4/13495: #0: ffffffff8bc0a098 (tasklist_lock){.+.+}-{2:2}, at: mm_update_next_owner+0x100/0x7a0 kernel/exit.c:367 #1: ffffc90000007d90 ((&ndev->rs_timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:35 [inline] #1: ffffc90000007d90 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1421 #2: ffffffff8bf747e0 (rcu_read_lock){....}-{1:2}, at: ip6_nd_hdr net/ipv6/ndisc.c:466 [inline] #2: ffffffff8bf747e0 (rcu_read_lock){....}-{1:2}, at: ndisc_send_skb+0x84b/0x1750 net/ipv6/ndisc.c:502 #3: ffffffff8bf74780 (rcu_read_lock_bh){....}-{1:2}, at: lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] #3: ffffffff8bf74780 (rcu_read_lock_bh){....}-{1:2}, at: ip6_finish_output2+0x196/0x16b0 net/ipv6/ip6_output.c:103 #4: ffffffff8bf74780 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1d7/0x2e00 net/core/dev.c:4116 #5: ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: print_other_cpu_stall kernel/rcu/tree_stall.h:541 [inline] #5: ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: check_cpu_stall kernel/rcu/tree_stall.h:706 [inline] #5: ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: rcu_pending kernel/rcu/tree.c:3830 [inline] #5: ffffffff8bf7cd98 (rcu_node_0){?.-.}-{2:2}, at: rcu_sched_clock_irq.cold+0x2b9/0x11dd kernel/rcu/tree.c:2650 stack backtrace: CPU: 0 PID: 13495 Comm: syz-executor.4 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0xfa/0x151 lib/dump_stack.c:120 print_usage_bug kernel/locking/lockdep.c:202 [inline] valid_state kernel/locking/lockdep.c:3818 [inline] mark_lock_irq kernel/locking/lockdep.c:4021 [inline] mark_lock.cold+0x61/0x8e kernel/locking/lockdep.c:4478 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4079 __trace_hardirqs_on_caller kernel/locking/lockdep.c:4097 [inline] lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4165 [inline] lockdep_hardirqs_on_prepare+0x135/0x400 kernel/locking/lockdep.c:4117 trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:skb_update_prio net/core/dev.c:3864 [inline] RIP: 0010:__dev_queue_xmit+0x1000/0x2e00 net/core/dev.c:4124 Code: 80 3c 02 00 0f 85 99 1a 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 10 48 8d bb 38 0b 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 4e 1a 00 00 4c 8b b3 38 0b 00 00 e8 ce 62 04 02 31 ff 89 c3 RSP: 0018:ffffc900000077e0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806c3bc000 RCX: 0000000000000100 RDX: 1ffff1100d877967 RSI: ffffffff86fcfe15 RDI: ffff88806c3bcb38 RBP: ffff888012e738c0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff86fcf0da R11: 0000000000000000 R12: ffff888012e73976 R13: ffff888012e7394c R14: ffff888012e738d0 R15: 000000000000000e neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0x8d5/0x16b0 net/ipv6/ip6_output.c:117 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ndisc_send_skb+0xa99/0x1750 net/ipv6/ndisc.c:508 ndisc_send_rs+0x12e/0x6f0 net/ipv6/ndisc.c:702 addrconf_rs_timer+0x3f2/0x820 net/ipv6/addrconf.c:3877 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1431 expire_timers kernel/time/timer.c:1476 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1745 __run_timers kernel/time/timer.c:1726 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:mm_update_next_owner+0x44e/0x7a0 kernel/exit.c:388 Code: fb ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 02 00 00 44 8b b5 dc fb ff ff <31> ff 41 81 e6 00 00 20 00 44 89 f6 e8 61 eb 2e 00 45 85 f6 0f 85 RSP: 0018:ffffc9000202fb18 EFLAGS: 00000246 RAX: 0000000000000007 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81447020 RDI: ffff88801d94d36c RBP: ffff88801d94d790 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff8144705f R11: 0000000000000001 R12: ffff888022e8b100 R13: ffff88801d94d340 R14: 0000000000208040 R15: ffff888140760010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb67/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x42c/0x2100 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ef9 Code: Unable to access opcode bytes at RIP 0x465ecf. RSP: 002b:00007f219b473218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000056bf68 RCX: 0000000000465ef9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007ffe1b363fdf R14: 00007f219b473300 R15: 0000000000022000 ------------[ cut here ]------------ timer: addrconf_rs_timer+0x0/0x820 net/ipv6/addrconf.c:1859 preempt leak: 00000101 -> 00000102 WARNING: CPU: 0 PID: 13495 at kernel/time/timer.c:1437 call_timer_fn+0x5d8/0x6b0 kernel/time/timer.c:1437 Modules linked in: CPU: 0 PID: 13495 Comm: syz-executor.4 Not tainted 5.11.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:call_timer_fn+0x5d8/0x6b0 kernel/time/timer.c:1437 Code: e8 cd 6f 10 00 89 da 4c 89 f6 48 c7 c7 e0 75 6d 89 65 8b 0d 3a 0b 9f 7e 81 e1 ff ff ff 7f c6 05 cb bf 4e 0c 01 e8 e9 21 5d 07 <0f> 0b e9 80 fc ff ff e8 9c 6f 10 00 0f 0b e9 fb fd ff ff e8 90 6f RSP: 0018:ffffc90000007d58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000101 RCX: 0000000000000000 RDX: ffff88806da59bc0 RSI: ffffffff815bcf75 RDI: fffff52000000f9d RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815b604e R11: 0000000000000000 R12: 0000000000000000 R13: 1ffff92000000fac R14: ffffffff87b0d0a0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000053b198 CR3: 0000000013663000 CR4: 0000000000350ef0 Call Trace: expire_timers kernel/time/timer.c:1476 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1745 __run_timers kernel/time/timer.c:1726 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1758 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:mm_update_next_owner+0x44e/0x7a0 kernel/exit.c:388 Code: fb ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b5 02 00 00 44 8b b5 dc fb ff ff <31> ff 41 81 e6 00 00 20 00 44 89 f6 e8 61 eb 2e 00 45 85 f6 0f 85 RSP: 0018:ffffc9000202fb18 EFLAGS: 00000246 RAX: 0000000000000007 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81447020 RDI: ffff88801d94d36c RBP: ffff88801d94d790 R08: 0000000000000000 R09: ffffffff8bc0a083 R10: ffffffff8144705f R11: 0000000000000001 R12: ffff888022e8b100 R13: ffff88801d94d340 R14: 0000000000208040 R15: ffff888140760010 exit_mm kernel/exit.c:500 [inline] do_exit+0xb67/0x2ae0 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 get_signal+0x42c/0x2100 kernel/signal.c:2773 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811 handle_signal_work kernel/entry/common.c:147 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x465ef9 Code: Unable to access opcode bytes at RIP 0x465ecf. RSP: 002b:00007f219b473218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 000000000056bf68 RCX: 0000000000465ef9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007ffe1b363fdf R14: 00007f219b473300 R15: 0000000000022000