rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=8b34/1/0x4000000000000000 softirq=43062/43063 fqs=13
rcu: (detected by 0, t=10502 jiffies, g=63093, q=249 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5336 Comm: kworker/u4:11 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: netns cleanup_net
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x69/0xb0 kernel/rcu/tree.c:695
Code: 48 03 1c ed 00 ea 13 8c 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 1c 8b 03 c1 e8 02 83 e0 01 65 ff 0d 2c 63 96 7e 74 03 5b
RSP: 0018:ffffc900001e0df8 EFLAGS: 00000006
RAX: 0000000000000003 RBX: ffff8880b9936ce8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000010002 RDI: ffffffff8c13ea08
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8880b992b880 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003030 CR3: 000000006e85a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hrtimer_start include/trace/events/timer.h:198 [inline]
debug_activate kernel/time/hrtimer.c:476 [inline]
enqueue_hrtimer+0x28b/0x320 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x8d9/0xa30 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_release+0x3f4/0x670 kernel/locking/lockdep.c:5713
Code: 7e 83 f8 01 0f 85 40 01 00 00 9c 58 f6 c4 02 0f 85 2b 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c5 48 c7 45 00 00 00 00 00 c7 45 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90005ba7a60 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: c7aad66dd79aa374 RCX: ffffc90005ba7ab0
RDX: 1ffff11005532157 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff92000b74f4e R08: 0000000000000001 R09: fffffbfff1cf5eda
R10: ffffffff8e7af6d7 R11: 1ffffffff18f47d1 R12: 0000000000000003
R13: ffff88802a990ac0 R14: 0000000000000004 R15: ffff88802a990000
rcu_lock_release include/linux/rcupdate.h:307 [inline]
rcu_read_unlock include/linux/rcupdate.h:781 [inline]
inet_twsk_purge+0x562/0x900 net/ipv4/inet_timewait_sock.c:336
ops_exit_list+0x125/0x170 net/core/net_namespace.c:175
cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:614
process_one_work+0x99a/0x15e0 kernel/workqueue.c:2407
worker_thread+0x67d/0x10c0 kernel/workqueue.c:2554
kthread+0x344/0x440 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: rcu_preempt kthread starved for 10474 jiffies! g63093 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:28064 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x1d15/0x5790 kernel/sched/core.c:6669
schedule+0xde/0x1a0 kernel/sched/core.c:6745
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:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 12517 Comm: syz-executor.3 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:csd_lock_wait kernel/smp.c:285 [inline]
RIP: 0010:smp_call_function_many_cond+0x684/0x1240 kernel/smp.c:828
Code: 89 ee e8 2f 41 0b 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 ee 44 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 81 09 00 00 8b 43 08 31
RSP: 0018:ffffc9001db2f808 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9943220 RCX: 0000000000000000
RDX: ffff888027239dc0 RSI: ffffffff8178dec2 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: ffffed1017328645
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200be030 CR3: 000000000c571000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:996
__flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:943 [inline]
flush_tlb_mm_range+0x36e/0x540 arch/x86/mm/tlb.c:1029
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:458 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:448 [inline]
tlb_flush_mmu mm/mmu_gather.c:298 [inline]
tlb_finish_mmu+0x338/0x7e0 mm/mmu_gather.c:391
exit_mmap+0x2b2/0x930 mm/mmap.c:3146
__mmput+0x128/0x4c0 kernel/fork.c:1347
mmput+0x60/0x70 kernel/fork.c:1369
exit_mm kernel/exit.c:564 [inline]
do_exit+0x9d7/0x29f0 kernel/exit.c:858
do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
get_signal+0x2315/0x25b0 kernel/signal.c:2874
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
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:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f90ad28c169
Code: Unable to access opcode bytes at 0x7f90ad28c13f.
RSP: 002b:00007f90adfdf218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f90ad3abf88 RCX: 00007f90ad28c169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f90ad3abf88
RBP: 00007f90ad3abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f90ad3abf8c
R13: 00007ffec2c6a21f R14: 00007f90adfdf300 R15: 0000000000022000