rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10499 ticks this GP) idle=108c/1/0x4000000000000000 softirq=16351/16351 fqs=1
rcu: 	(t=10500 jiffies g=9437 q=471 ncpus=2)
rcu: rcu_preempt kthread starved for 10497 jiffies! g9437 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:27320 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6786
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6879
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6439 Comm: syz.2.220 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:102 [inline]
RIP: 0010:native_queued_spin_lock_slowpath+0xd1/0x8e0 kernel/locking/qspinlock.c:141
Code: eb 06 89 44 24 60 f3 90 48 89 df be 04 00 00 00 e8 b4 1d b2 f6 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 75 35 8b 03 <89> 44 24 60 85 c0 75 d4 48 89 df be 04 00 00 00 e8 ba 1d b2 f6 4c
RSP: 0018:ffffc9000266f800 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888101295e08 RCX: ffffffff8b71260c
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888101295e08
RBP: ffffc9000266f8f8 R08: ffff888101295e0b R09: 1ffff11020252bc1
R10: dffffc0000000000 R11: ffffed1020252bc2 R12: 1ffff920004cdf08
R13: 0000000000000001 R14: ffffc9000266f860 R15: 1ffff11020252bc1
FS:  00005555937a5500(0000) GS:ffff8880b861f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c007e66000 CR3: 0000000028428000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline]
 queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 futex_unqueue+0xf6/0x240 kernel/futex/core.c:937
 __futex_wait+0x223/0x3e0 kernel/futex/waitwake.c:690
 futex_wait+0x104/0x360 kernel/futex/waitwake.c:715
 do_futex+0x333/0x420 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1fa78eb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe45d358c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000002a1b5 RCX: 00007fc1fa78eb69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc1fa9b5fac
RBP: 0000000000000032 R08: 7fffffffffffffff R09: 0000000845d35bbf
R10: 00007ffe45d359c0 R11: 0000000000000246 R12: 00007fc1fa9b5fac
R13: 00007ffe45d359c0 R14: 000000000002a1e7 R15: 00007ffe45d359e0
 </TASK>
CPU: 1 UID: 0 PID: 6441 Comm: syz.2.220 Not tainted 6.16.0-rc6-syzkaller-00434-gcd7c97f4584a-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_read_unlock_special+0xc1/0x4c0 kernel/rcu/tree_plugin.h:694
Code: 00 66 42 c7 44 2b 09 00 00 42 c6 44 2b 0b 00 65 48 8b 05 52 37 f8 10 48 3b 84 24 a0 00 00 00 0f 85 65 03 00 00 48 8d 65 d8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 49 89 ff 48 c7 84 24
RSP: 0018:ffffc900001e06b0 EFLAGS: 00000246
RAX: 598fa6afa00e7400 RBX: ffff88810955bdc4 RCX: 598fa6afa00e7400
RDX: 0000000000000002 RSI: ffffffff8d998727 RDI: ffffffff8be29f80
RBP: ffffc900001e06d0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007fc1fb69a6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028428000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438
 rcu_read_unlock include/linux/rcupdate.h:873 [inline]
 is_bpf_text_address+0x292/0x2b0 kernel/bpf/core.c:778
 kernel_text_address+0xa5/0xe0 kernel/extable.c:125
 __kernel_text_address+0xd/0x40 kernel/extable.c:79
 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2381 [inline]
 slab_free mm/slub.c:4643 [inline]
 kfree+0x18e/0x440 mm/slub.c:4842
 slab_free_after_rcu_debug+0x60/0x2a0 mm/slub.c:4680
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 rcu_core+0xca8/0x1710 kernel/rcu/tree.c:2832
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70 kernel/kcov.c:235
Code: 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <e9> 7e 45 b1 09 cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc900029efae8 EFLAGS: 00000293
RAX: ffffffff8b697e60 RBX: dffffc0000000000 RCX: ffff88810955b980
RDX: 0000000000000000 RSI: ffff888101295e48 RDI: ffff888101295e48
RBP: ffff888101295e48 R08: ffff88802f21d66b R09: 1ffff11005e43acd
R10: dffffc0000000000 R11: ffffed1005e43ace R12: dffffc0000000000
R13: ffffc9000266fad0 R14: ffff888101295e00 R15: ffff888101295e08
 plist_check_list+0x20/0x330 lib/plist.c:45
 __futex_unqueue+0xf0/0x160 kernel/futex/core.c:860
 __futex_wake_mark kernel/futex/waitwake.c:115 [inline]
 futex_wake_mark+0xe2/0x220 kernel/futex/waitwake.c:140
 futex_wake+0x37a/0x500 kernel/futex/waitwake.c:191
 do_futex+0x395/0x420 kernel/futex/syscalls.c:107
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1fa78eb69
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc1fb69a0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fc1fa9b5fa8 RCX: 00007fc1fa78eb69
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fc1fa9b5fac
RBP: 00007fc1fa9b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fc1fa9b5fac
R13: 0000000000000000 R14: 00007ffe45d35680 R15: 00007ffe45d35768
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105562962738 wd_nsec: 105562965102
