rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32544/1:b..l P32537/1:b..l P4457/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=225973, q=461 ncpus=2)
task:udevd state:R running task stack:24776 pid:4457 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
preempt_schedule_common+0x45/0xb0 kernel/sched/core.c:6879
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x5b/0x70 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
__wake_up_common_lock+0xe2/0x140 kernel/sched/wait.c:140
sock_def_readable+0x158/0x760 net/core/sock.c:3311
__netlink_sendskb net/netlink/af_netlink.c:1286 [inline]
netlink_sendskb net/netlink/af_netlink.c:1292 [inline]
netlink_unicast+0x6ea/0x7f0 net/netlink/af_netlink.c:1380
netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:748
____sys_sendmsg+0x739/0x920 net/socket.c:2494
___sys_sendmsg+0x110/0x1b0 net/socket.c:2548
__sys_sendmsg+0xf7/0x1c0 net/socket.c:2577
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f38b6b24a4b
RSP: 002b:00007ffdd237fad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000055e2f31f5df0 RCX: 00007f38b6b24a4b
RDX: 0000000000000000 RSI: 00007ffdd237fae8 RDI: 0000000000000004
RBP: 000055e2f320ac80 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000000b5 R14: 0000000000000000 R15: 0000000000000000
task:modprobe state:R running task stack:26432 pid:32537 ppid:9054 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7022
irqentry_exit+0x35/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:mas_validate_parent_slot lib/maple_tree.c:7031 [inline]
RIP: 0010:mt_validate+0x20b1/0x4370 lib/maple_tree.c:7220
Code: 30 c0 48 39 44 24 18 0f 84 a2 0f 00 00 e8 27 60 77 f7 be 04 00 00 00 48 c7 c7 40 01 51 92 e8 16 96 ca f7 f0 ff 05 9f 90 43 08 0a 60 77 f7 44 89 f8 48 b9 00 00 00 00 00 fc ff df 48 8d 90 40
RSP: 0018:ffffc9000329f660 EFLAGS: 00000203
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8a0d709a
RDX: fffffbfff24a2028 RSI: 0000000000000004 RDI: ffffffff92510140
RBP: ffff88802bdddc50 R08: 0000000000000001 R09: fffffbfff24a2028
R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880967a5a00
R13: ffff8880967a5a0c R14: 0000000000000000 R15: 0000000000000003
validate_mm+0x9d/0x470 mm/mmap.c:311
__split_vma+0x9a/0x830 mm/mmap.c:2339
do_vmi_align_munmap+0x413/0x16a0 mm/mmap.c:2486
do_vmi_munmap+0x26e/0x2c0 mm/mmap.c:2634
mmap_region+0x1f3/0x2570 mm/mmap.c:2682
do_mmap+0x850/0xee0 mm/mmap.c:1373
vm_mmap_pgoff+0x1a2/0x3b0 mm/util.c:543
ksys_mmap_pgoff+0x42b/0x5b0 mm/mmap.c:1419
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd3f1921b74
RSP: 002b:00007fffc8a51528 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fffc8a51568 RCX: 00007fd3f1921b74
RDX: 0000000000000005 RSI: 0000000000006000 RDI: 00007fd3f1683000
RBP: 00007fffc8a51900 R08: 0000000000000000 R09: 0000000000003000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fd3f1904ac0
R13: 00007fffc8a51988 R14: 0000000000002ee0 R15: 0000000000000000
task:modprobe state:R running task stack:27312 pid:32544 ppid:27195 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7022
irqentry_exit+0x35/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:no_idmapping fs/mnt_idmapping.c:72 [inline]
RIP: 0010:make_vfsuid+0xa8/0x170 fs/mnt_idmapping.c:103
Code: c0 0f 85 cb 00 00 00 4c 89 e2 8b 6c 24 20 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 b6 00 00 00 4d 8b 24 24 <49> 81 fc 40 78 85 8c 74 55 e8 8a c3 8d ff 4d 39 ec 74 4b e8 80 c3
RSP: 0018:ffffc900032ef900 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff9200065df20 RCX: 0000000000000000
RDX: 1ffffffff196fcb4 RSI: ffffffff81f70cd9 RDI: ffffc900032ef920
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8c857840
R13: ffffffff8c857840 R14: ffff88801e948cd8 R15: ffff888027ee0000
i_uid_into_vfsuid include/linux/fs.h:1328 [inline]
acl_permission_check fs/namei.c:345 [inline]
generic_permission+0xdc/0x6a0 fs/namei.c:407
do_inode_permission fs/namei.c:468 [inline]
inode_permission.part.0+0x99/0x520 fs/namei.c:528
inode_permission fs/namei.c:509 [inline]
may_lookup fs/namei.c:1716 [inline]
link_path_walk.part.0+0x277/0xd60 fs/namei.c:2267
link_path_walk fs/namei.c:2250 [inline]
path_openat+0x262/0x2710 fs/namei.c:3789
do_filp_open+0x1ba/0x410 fs/namei.c:3820
do_sys_openat2+0x160/0x1c0 fs/open.c:1407
do_sys_open fs/open.c:1422 [inline]
__do_sys_openat fs/open.c:1438 [inline]
__se_sys_openat fs/open.c:1433 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1433
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7fae3a4a46
RSP: 002b:00007ffff8a8def8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffff8a8e158 RCX: 00007f7fae3a4a46
RDX: 0000000000080000 RSI: 00007ffff8a8df70 RDI: 00000000ffffff9c
RBP: 00007ffff8a8df60 R08: 0000000000080000 R09: 00007ffff8a8df70
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffff8a8df70
R13: 0000000000000005 R14: 00007ffff8a8e13f R15: 00000000ffffffff
rcu: rcu_preempt kthread starved for 10142 jiffies! g225973 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:28232 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xc9a/0x5880 kernel/sched/core.c:6710
schedule+0xde/0x1a0 kernel/sched/core.c:6786
schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
kthread+0x344/0x440 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
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:86 [inline]
NMI backtrace for cpu 0 skipped: idling at __intel_idle_hlt drivers/idle/intel_idle.c:205 [inline]
NMI backtrace for cpu 0 skipped: idling at intel_idle_hlt+0x23/0x30 drivers/idle/intel_idle.c:224