rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5568/1:b..l P7027/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=31649, q=797 ncpus=2)
task:modprobe state:R running task stack:23680 pid:7027 tgid:7027 ppid:2934 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x9d/0x120 kernel/kcov.c:350
Code: 00 00 4d 85 d2 0f 84 8b 00 00 00 4c 8b 4c 24 20 65 4c 8b 1c 25 40 d7 03 00 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 <65> 8b 05 a4 59 70 7e 25 00 01 ff 00 74 11 3d 00 01 00 00 75 de 41
RSP: 0018:ffffc900090ff298 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc900090ff3b8 RCX: ffffffff8babbb31
RDX: 0000000000000001 RSI: ffffffff8ffea670 RDI: 0000000000000001
RBP: ffffc900090ff4b0 R08: 0000000000000005 R09: ffffffff8babbb75
R10: 0000000000000003 R11: ffff888029ad5a00 R12: 1ffff9200121fe7b
R13: ffff88807da39200 R14: 0000000000000002 R15: ffff88807ba232e8
mas_data_end lib/maple_tree.c:1446 [inline]
mt_validate_nulls lib/maple_tree.c:7549 [inline]
mt_validate+0x4375/0x4aa0 lib/maple_tree.c:7596
validate_mm+0xe7/0x530 mm/mmap.c:329
__split_vma+0xaca/0xc30 mm/mmap.c:2511
do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2676
do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
mmap_region+0x72f/0x2090 mm/mmap.c:2881
do_mmap+0x8f9/0x1010 mm/mmap.c:1468
vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd2dd97ab74
RSP: 002b:00007ffc57008bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffc57008c40 RCX: 00007fd2dd97ab74
RDX: 0000000000000001 RSI: 0000000000053000 RDI: 00007fd2dd82d000
RBP: 00007ffc57009360 R08: 0000000000000000 R09: 000000000014b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fd2dd9565c0
R13: 00007ffc570093e8 R14: 000000000014ab8e R15: 0000000000000000
task:kworker/u8:10 state:R running task stack:21656 pid:5568 tgid:5568 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5763
Code: 2b 00 74 08 4c 89 f7 e8 9a 00 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000345f9e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200068bf48 RCX: 727e6bb3170a7000
RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c6060c0
RBP: ffffc9000345fb40 R08: ffffffff9372e807 R09: 1ffffffff26e5d00
R10: dffffc0000000000 R11: fffffbfff26e5d01 R12: 1ffff9200068bf44
R13: dffffc0000000000 R14: ffffc9000345fa40 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10487 jiffies! g31649 f0x0 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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111