rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14964/1:b..l
(detected by 0, t=10502 jiffies, g=113713, q=207 ncpus=2)
task:kworker/u4:1 state:R running task stack:23352 pid:14964 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x132c/0x4330 kernel/sched/core.c:6554
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6866
irqentry_exit+0x53/0x80 kernel/entry/common.c:433
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x32/0x60 kernel/kcov.c:207
Code: 84 82 78 7e 65 8b 15 85 82 78 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
RSP: 0018:ffffc90016a1fa58 EFLAGS: 00000246
RAX: ffffffff8909b4d6 RBX: 0000000000000001 RCX: ffff888076f95940
RDX: 0000000000000000 RSI: ffffffff8b3cddc0 RDI: ffffffff8b3cdd80
RBP: ffffc90016a1fb70 R08: ffffffff8909b4c4 R09: fffffbfff2092e45
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88814becbe20
R13: dffffc0000000000 R14: ffffffff920ef560 R15: 00000000000597c3
rcu_read_lock include/linux/rcupdate.h:748 [inline]
inet_twsk_purge+0x146/0xad0 net/ipv4/inet_timewait_sock.c:295
ops_exit_list net/core/net_namespace.c:174 [inline]
cleanup_net+0x763/0xb60 net/core/net_namespace.c:601
process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2292
worker_thread+0xa5f/0x1210 kernel/workqueue.c:2439
kthread+0x26e/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
rcu: rcu_preempt kthread starved for 10502 jiffies! g113713 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:26592 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x132c/0x4330 kernel/sched/core.c:6554
schedule+0xbf/0x180 kernel/sched/core.c:6630
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x2c2/0x1010 kernel/rcu/tree.c:1661
rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1860
kthread+0x26e/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22887 Comm: syz-executor.4 Not tainted 6.1.43-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:rb_add_cached include/linux/rbtree.h:183 [inline]
RIP: 0010:timerqueue_add+0x1e6/0x280 lib/timerqueue.c:40
Code: 80 7c 05 00 00 74 08 4c 89 ff e8 65 96 61 f7 4c 8b 7c 24 10 4e 89 7c 35 00 45 84 e4 75 40 e8 a1 06 0b f7 31 db 4c 8b 64 24 08 69 e8 93 06 0b f7 ba 18 00 00 00 4c 89 ff 31 f6 e8 64 97 61 f7
RSP: 0018:ffffc900001e05e0 EFLAGS: 00000046
RAX: ffffffff8a7ee60f RBX: 0000000000000000 RCX: ffff888028b05940
RDX: 0000000000010102 RSI: 0000000000000000 RDI: ffff888045819358
RBP: ffff888072895340 R08: dffffc0000000000 R09: ffff888045819348
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b992a610
R13: 1ffff1100e512a69 R14: 0000000000000008 R15: ffff888045819340
FS: 000055555650c480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbaf6b9bf84 CR3: 0000000029b15000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
enqueue_hrtimer+0x16c/0x390 kernel/time/hrtimer.c:1091
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xf3/0x5a0 kernel/locking/lockdep.c:5640
Code: 0d 0f 86 e4 02 00 00 89 db 48 89 d8 48 c1 e8 06 48 8d 3c c5 e8 6f 73 8e be 08 00 00 00 e8 65 a2 76 00 48 0f a3 1d d5 94 09 0d <73> 0d e8 76 ff 08 00 84 c0 0f 84 b9 02 00 00 48 c7 c0 a4 a4 73 8e
RSP: 0018:ffffc900001e09e0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8169db0b
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e736fe8
RBP: ffffc900001e0b28 R08: dffffc0000000000 R09: fffffbfff1ce6dfe
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200003c144
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88804887ec10
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
mrp_join_timer+0x24/0x180 net/802/mrp.c:603
call_timer_fn+0x19e/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1790
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:203
Code: e8 25 00 00 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 78 85 e9 0c 48 89 de 5b e9 f7 bd 55 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d 84 82 78 7e 65 8b 15 85 82 78 7e f7 c2 00
RSP: 0018:ffffc9000b5575b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888028b05940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880750b4c00 R08: ffffffff813d6f48 R09: ffffffff8a7d326c
R10: 0000000000000003 R11: ffff888028b05940 R12: 0000000000000006
R13: 1ffff920016aaf8a R14: 00000000750b4c00 R15: 000000000000002e
__phys_addr+0xb6/0x170 arch/x86/mm/physaddr.c:28
virt_to_folio include/linux/mm.h:898 [inline]
build_detached_freelist mm/slub.c:3717 [inline]
kmem_cache_free_bulk+0x5a/0x750 mm/slub.c:3775
mt_free_bulk lib/maple_tree.c:162 [inline]
mas_destroy+0x1c4c/0x2310 lib/maple_tree.c:5856
mas_store_prealloc+0x34d/0x460 lib/maple_tree.c:5786
mmap_region+0x15ab/0x1fa0 mm/mmap.c:2821
do_mmap+0x8c5/0xf60 mm/mmap.c:1412
vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:520
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbaf6a7cb23
Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 b0 ff ff ff 64 c7
RSP: 002b:00007ffdacff4ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fbaf5dff6c0 RCX: 00007fbaf6a7cb23
RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffdacff52a0
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000