rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4485/1:b..l P11/1:b..l P8137/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=28365, q=332 ncpus=2)
task:syz-executor.0 state:R running task stack:27112 pid:8137 ppid:5067 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7007
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:650
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 kernel/kcov.c:207
Code: 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 8b 05 fd ef 7c 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 bd 03 00 a9
RSP: 0018:ffffc90004d57720 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffed100fa1135c
R10: ffff88807d089ae3 R11: dffffc0000000000 R12: 0000000000000000
R13: ffffffff8ecda1ac R14: dffffc0000000000 R15: ffff88807d4b5150
rcu_read_unlock+0x6/0xc0 include/linux/rcupdate.h:778
pte_unmap include/linux/pgtable.h:113 [inline]
zap_pte_range mm/memory.c:1525 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x147a/0x2c10 mm/memory.c:1644
unmap_single_vma+0x194/0x2b0 mm/memory.c:1690
unmap_vmas+0x1e8/0x330 mm/memory.c:1731
exit_mmap+0x1ad/0xa60 mm/mmap.c:3210
__mmput+0x12a/0x4d0 kernel/fork.c:1349
mmput+0x62/0x70 kernel/fork.c:1371
exit_mm kernel/exit.c:567 [inline]
do_exit+0x9b4/0x2a20 kernel/exit.c:861
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
get_signal+0x23d1/0x27b0 kernel/signal.c:2892
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f638ea7cae9
RSP: 002b:00007f638f7880c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007f638eb9c050 RCX: 00007f638ea7cae9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f638eac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f638eb9c050 R15: 00007ffd93491688
task:kworker/u4:1 state:R running task stack:23880 pid:11 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7007
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:386 [inline]
RIP: 0010:__rcu_read_unlock+0x67/0x570 kernel/rcu/tree_plugin.h:423
Code: 08 84 d2 0f 85 3a 02 00 00 65 4c 8b 24 25 00 bd 03 00 49 8d bc 24 3c 04 00 00 8b 9d 3c 04 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 eb 01 83 c0
RSP: 0018:ffffc9000031fb90 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8a07bf1f RDI: ffff88801966c4bc
RBP: ffff88801966c080 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801966c080
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
rcu_read_unlock include/linux/rcupdate.h:781 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x8e7/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
task:udevd state:R running task stack:25712 pid:4485 ppid:1 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6864
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+0x5d/0x70 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock+0xe3/0x140 kernel/sched/wait.c:140
sock_def_readable+0x158/0x760 net/core/sock.c:3324
__netlink_sendskb net/netlink/af_netlink.c:1289 [inline]
netlink_sendskb net/netlink/af_netlink.c:1295 [inline]
netlink_unicast+0x6df/0x810 net/netlink/af_netlink.c:1383
netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1910
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg+0xd9/0x180 net/socket.c:753
____sys_sendmsg+0x6ac/0x940 net/socket.c:2541
___sys_sendmsg+0x135/0x1d0 net/socket.c:2595
__sys_sendmsg+0x117/0x1e0 net/socket.c:2624
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9b56124a4b
RSP: 002b:00007ffe4be918f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00005594f8dd1240 RCX: 00007f9b56124a4b
RDX: 0000000000000000 RSI: 00007ffe4be91908 RDI: 0000000000000004
RBP: 00005594f8e84900 R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000000b4 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10223 jiffies! g28365 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:28712 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1613
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1812
kthread+0x33a/0x430 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1b/0x20 drivers/acpi/processor_idle.c:112
sched: RT throttling activated