rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (8666 ticks this GP) idle=c97/1/0x4000000000000000 softirq=67406/67407 fqs=19
(t=10501 jiffies g=86645 q=284)
rcu: rcu_preempt kthread starved for 10375 jiffies! g86645 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:26400 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 18555 Comm: syz.3.5216 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
print_cpu_stall+0x31b/0x600 kernel/rcu/tree_stall.h:631
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
update_process_times+0x196/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:rcu_lock_release+0x0/0x20 include/linux/rcupdate.h:316
Code: b6 5a 69 f8 48 c7 c7 e0 fb 91 8c 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 68 e5 06 17 89 e8 e6 a5 4b f8 48 83 c4 08 c3 90 8b 5a 69 f8 e8 86 5a 69 f8 48 c7 c7 e0 fb 91 8c 48 c7 c6 15 07
RSP: 0018:ffffc90000dd08b8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 1ffff920001ba12c RCX: ffffffff81631a88
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: ffffffff8ad8f7c0
RBP: ffffc90000dd0ab0 R08: dffffc0000000000 R09: fffffbfff1f8e237
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000185 R14: ffff888041fd86e8 R15: ffff88805e3a37a8
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
ndisc_send_skb+0xca1/0x13c0 net/ipv6/ndisc.c:519
addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6777
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 79 be 1b f7 e8 44 35 4b f7 fb bf 01 00 00 00 a9 b3 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 e9 7d 8e f7 48
RSP: 0018:ffffc900032072e0 EFLAGS: 00000282
RAX: 64275b9f4216c400 RBX: 1ffff92000640e64 RCX: ffffffff91468f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: 0000000000000001
RBP: ffffc900032073a0 R08: ffffffff8186e260 R09: ffffffff8f674048
R10: ffffffff8f674058 R11: ffffffff8f674050 R12: 1ffff92000640e5c
R13: 1ffff92000640e60 R14: ffffc90003207300 R15: dffffc0000000000
irqentry_exit+0x53/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:pmd_page_vaddr arch/x86/include/asm/pgtable.h:800 [inline]
RIP: 0010:pte_offset_kernel include/linux/pgtable.h:91 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1331 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1494 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1523 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1544 [inline]
RIP: 0010:unmap_page_range+0x997/0x2630 mm/memory.c:1565
Code: ea ff ff 4c 8d 7c 18 28 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 fc c2 11 00 49 8b 3f <4d> 21 f4 48 b8 00 00 00 00 80 88 ff ff 49 01 c4 44 89 e8 c1 e8 0c
RSP: 0018:ffffc90003207460 EFLAGS: 00000246
RAX: 1ffffd40003f0d15 RBX: 0000000001f86880 RCX: dffffc0000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff888074c709c0
RBP: ffffc90003207690 R08: ffffffff81b8673f R09: ffffc90003207620
R10: 0000000000000000 R11: dffffc0000000001 R12: 000ffffffffff000
R13: 00007f85a255d000 R14: 000000007e1a2067 R15: ffffea0001f868a8
unmap_vmas+0x1f8/0x390 mm/memory.c:1642
exit_mmap+0x3b6/0x670 mm/mmap.c:3186
__mmput+0x112/0x3b0 kernel/fork.c:1126
exit_mm+0x688/0x7f0 kernel/exit.c:550
do_exit+0x626/0x2480 kernel/exit.c:861
do_group_exit+0x144/0x310 kernel/exit.c:996
get_signal+0xc66/0x14e0 kernel/signal.c:2897
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x7f85a269fe79
Code: Unable to access opcode bytes at RIP 0x7f85a269fe4f.
RSP: 002b:00007f85a0b1c0e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007f85a283bf88 RCX: 00007f85a269fe79
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f85a283bf8c
RBP: 00007f85a283bf80 R08: 0000000000000010 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f85a283bf8c
R13: 0000000000000000 R14: 00007ffd108bda20 R15: 00007ffd108bdb08
NMI backtrace for cpu 1
CPU: 1 PID: 18555 Comm: syz.3.5216 Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
update_process_times+0x196/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:rcu_lock_release+0x0/0x20 include/linux/rcupdate.h:316
Code: b6 5a 69 f8 48 c7 c7 e0 fb 91 8c 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 68 e5 06 17 89 e8 e6 a5 4b f8 48 83 c4 08 c3 90 8b 5a 69 f8 e8 86 5a 69 f8 48 c7 c7 e0 fb 91 8c 48 c7 c6 15 07
RSP: 0018:ffffc90000dd08b8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 1ffff920001ba12c RCX: ffffffff81631a88
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: ffffffff8ad8f7c0
RBP: ffffc90000dd0ab0 R08: dffffc0000000000 R09: fffffbfff1f8e237
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000185 R14: ffff888041fd86e8 R15: ffff88805e3a37a8
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
ndisc_send_skb+0xca1/0x13c0 net/ipv6/ndisc.c:519
addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959
call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6777
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 79 be 1b f7 e8 44 35 4b f7 fb bf 01 00 00 00 a9 b3 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 e9 7d 8e f7 48
RSP: 0018:ffffc900032072e0 EFLAGS: 00000282
RAX: 64275b9f4216c400 RBX: 1ffff92000640e64 RCX: ffffffff91468f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: 0000000000000001
RBP: ffffc900032073a0 R08: ffffffff8186e260 R09: ffffffff8f674048
R10: ffffffff8f674058 R11: ffffffff8f674050 R12: 1ffff92000640e5c
R13: 1ffff92000640e60 R14: ffffc90003207300 R15: dffffc0000000000
irqentry_exit+0x53/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:pmd_page_vaddr arch/x86/include/asm/pgtable.h:800 [inline]
RIP: 0010:pte_offset_kernel include/linux/pgtable.h:91 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1331 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1494 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1523 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1544 [inline]
RIP: 0010:unmap_page_range+0x997/0x2630 mm/memory.c:1565
Code: ea ff ff 4c 8d 7c 18 28 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 fc c2 11 00 49 8b 3f <4d> 21 f4 48 b8 00 00 00 00 80 88 ff ff 49 01 c4 44 89 e8 c1 e8 0c
RSP: 0018:ffffc90003207460 EFLAGS: 00000246
RAX: 1ffffd40003f0d15 RBX: 0000000001f86880 RCX: dffffc0000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff888074c709c0
RBP: ffffc90003207690 R08: ffffffff81b8673f R09: ffffc90003207620
R10: 0000000000000000 R11: dffffc0000000001 R12: 000ffffffffff000
R13: 00007f85a255d000 R14: 000000007e1a2067 R15: ffffea0001f868a8
unmap_vmas+0x1f8/0x390 mm/memory.c:1642
exit_mmap+0x3b6/0x670 mm/mmap.c:3186
__mmput+0x112/0x3b0 kernel/fork.c:1126
exit_mm+0x688/0x7f0 kernel/exit.c:550
do_exit+0x626/0x2480 kernel/exit.c:861
do_group_exit+0x144/0x310 kernel/exit.c:996
get_signal+0xc66/0x14e0 kernel/signal.c:2897
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:320
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0033:0x7f85a269fe79
Code: Unable to access opcode bytes at RIP 0x7f85a269fe4f.
RSP: 002b:00007f85a0b1c0e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007f85a283bf88 RCX: 00007f85a269fe79
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f85a283bf8c
RBP: 00007f85a283bf80 R08: 0000000000000010 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f85a283bf8c
R13: 0000000000000000 R14: 00007ffd108bda20 R15: 00007ffd108bdb08