rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=146237, q=24165)
rcu: All QSes seen, last rcu_preempt kthread activity 5205 (4295028807-4295023602), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 5206 jiffies! g146237 f0x2 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:28952 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
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: 14574 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:203 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4713 [inline]
RIP: 0010:__lock_acquire+0x739/0x54a0 kernel/locking/lockdep.c:4965
Code: 19 29 90 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c6 33 00 00 8b 05 96 63 cd 0e 85 c0 0f 84 3a 07 00 00 31 c0 e9 0f ff ff ff <4c> 8b 64 24 58 40 38 6c 24 50 76 0d e8 d6 7e 7a 02 85 c0 0f 85 60
RSP: 0018:ffffc90000fd8698 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000058 RCX: ffffffff815bb5ed
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fd480d8
RBP: 0000000000000002 R08: 0000000000000000 R09: ffffffff8fd43a0f
R10: fffffbfff1fa8741 R11: 0000000000000000 R12: 0000000000000002
R13: ffff88803f3f8200 R14: ffff88803f3f8c60 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e7ad8b1048 CR3: 000000003a07b000 CR4: 00000000003506e0
DR0: 00000000000043ce DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5625 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_deactivate lib/debugobjects.c:735 [inline]
debug_object_deactivate+0x101/0x300 lib/debugobjects.c:723
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x3f8/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5593
Code: 62 a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90000fd8c48 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920001fb18b RCX: ffffffff815bc52f
RDX: 1ffff11007e7f18b RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8fd43b97
R10: fffffbfff1fa8772 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90000fd8d70 R15: 0000000000000000
call_timer_fn+0x12b/0x6b0 kernel/time/timer.c:1418
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:native_pmd_val arch/x86/include/asm/pgtable_types.h:390 [inline]
RIP: 0010:pmd_pfn arch/x86/include/asm/pgtable.h:192 [inline]
RIP: 0010:pte_lockptr include/linux/mm.h:2339 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1320 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1481 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1510 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1531 [inline]
RIP: 0010:unmap_page_range+0x78a/0x2a10 mm/memory.c:1552
Code: 00 48 89 44 24 30 e8 75 71 cb ff 48 8b 7c 24 30 31 f6 ba 10 00 00 00 e8 e4 66 11 00 48 8b 44 24 28 48 c1 e8 03 42 80 3c 30 00 <0f> 85 b0 1d 00 00 48 8b 44 24 28 31 ff 48 8b 18 48 89 de e8 1e 77
RSP: 0018:ffffc90009d577a8 EFLAGS: 00000246
RAX: 1ffff1100577d332 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90009d578a0
RBP: 0000000000000063 R08: 0000000000000001 R09: ffffc90009d57890
R10: fffff520013aaf13 R11: 0000000000000000 R12: 0000000000000000
R13: 00007fce6643f000 R14: dffffc0000000000 R15: 0000000000000000
unmap_single_vma+0x198/0x310 mm/memory.c:1597
unmap_vmas+0x16b/0x2f0 mm/memory.c:1629
exit_mmap+0x1d0/0x630 mm/mmap.c:3171
__mmput+0x122/0x4b0 kernel/fork.c:1113
mmput+0x56/0x60 kernel/fork.c:1134
exit_mm kernel/exit.c:507 [inline]
do_exit+0xb27/0x2b40 kernel/exit.c:819
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x21d0 kernel/signal.c:2820
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fce68f4bae9
Code: Unable to access opcode bytes at RIP 0x7fce68f4babf.
RSP: 002b:00007fce6647f218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fce6905f0e8 RCX: 00007fce68f4bae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fce6905f0e8
RBP: 00007fce6905f0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fce6905f0ec
R13: 00007fff0e205bdf R14: 00007fce6647f300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 19 29 sbb %ebp,(%rcx)
2: 90 nop
3: 83 e0 07 and $0x7,%eax
6: 83 c0 03 add $0x3,%eax
9: 38 d0 cmp %dl,%al
b: 7c 08 jl 0x15
d: 84 d2 test %dl,%dl
f: 0f 85 c6 33 00 00 jne 0x33db
15: 8b 05 96 63 cd 0e mov 0xecd6396(%rip),%eax # 0xecd63b1
1b: 85 c0 test %eax,%eax
1d: 0f 84 3a 07 00 00 je 0x75d
23: 31 c0 xor %eax,%eax
25: e9 0f ff ff ff jmpq 0xffffff39
* 2a: 4c 8b 64 24 58 mov 0x58(%rsp),%r12 <-- trapping instruction
2f: 40 38 6c 24 50 cmp %bpl,0x50(%rsp)
34: 76 0d jbe 0x43
36: e8 d6 7e 7a 02 callq 0x27a7f11
3b: 85 c0 test %eax,%eax
3d: 0f .byte 0xf
3e: 85 .byte 0x85
3f: 60 (bad)