rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=21d/1/0x4000000000000000 softirq=22209/22213 fqs=999
(detected by 0, t=10503 jiffies, g=21517, q=1853)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8779 Comm: syz-executor.2 Tainted: G W 5.17.0-syzkaller-13532-gb4a5ea09b293 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:135 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x122/0x180 mm/kasan/generic.c:189
Code: 4c 89 d8 4c 39 da 74 0e 80 3a 00 74 ef 49 8d 04 2c 48 85 d2 75 0b 48 89 da 48 29 c2 e9 55 ff ff ff 49 39 d2 75 17 49 0f be 02 <41> 83 e1 07 49 39 c1 7d 0a 5b b8 01 00 00 00 5d 41 5c c3 44 89 c2
RSP: 0018:ffffc900001e0c50 EFLAGS: 00000046
RAX: 0000000000000004 RBX: fffff5200003c194 RCX: ffffffff815ddb40
RDX: fffff5200003c193 RSI: 0000000000000004 RDI: ffffc900001e0c98
RBP: fffff5200003c193 R08: 0000000000000001 R09: ffffc900001e0c9b
R10: fffff5200003c193 R11: 0000000000000000 R12: ffffffff907aee10
R13: ffffffff907aee18 R14: 1ffff9200003c1a7 R15: ffffffff89ce48a0
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f717a79c028 CR3: 000000000ba8e000 CR4: 0000000000350ee0
Call Trace:
instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:542 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
do_raw_spin_lock+0x120/0x2a0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x27/0x3e0 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0xb02/0xe50 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x30 kernel/rcu/update.c:280
Code: c7 40 44 cc 89 e8 40 0d 00 00 65 c7 05 9d d0 a4 76 00 00 00 00 eb bc e8 4e fb ff ff eb bc cc cc cc cc cc cc cc cc cc cc cc cc <8b> 05 46 d7 58 04 85 c0 74 21 8b 05 1c 0a 59 04 85 c0 74 17 65 48
RSP: 0018:ffffc9000a16f620 EFLAGS: 00000283
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff815d5f91
RDX: fffffbfff1b6cffb RSI: 0000000000000008 RDI: ffffffff8db67fd0
RBP: 1ffff9200142dec9 R08: 0000000000000000 R09: ffffffff8db67fd7
R10: fffffbfff1b6cffa R11: 0000000000000000 R12: 0000000000000001
R13: ffffea0001119d88 R14: 0000000000000000 R15: 0000000000000000
rcu_read_lock_held_common kernel/rcu/update.c:104 [inline]
rcu_read_lock_sched_held+0xd/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5652
page_remove_rmap+0x318/0x1510 mm/rmap.c:1413
zap_pte_range mm/memory.c:1389 [inline]
zap_pmd_range mm/memory.c:1497 [inline]
zap_pud_range mm/memory.c:1526 [inline]
zap_p4d_range mm/memory.c:1547 [inline]
unmap_page_range+0xffa/0x3fa0 mm/memory.c:1568
unmap_single_vma+0x198/0x310 mm/memory.c:1613
unmap_vmas+0x16b/0x2f0 mm/memory.c:1645
exit_mmap+0x1c4/0x4a0 mm/mmap.c:3148
__mmput+0x122/0x4b0 kernel/fork.c:1183
mmput+0x56/0x60 kernel/fork.c:1205
exit_mm kernel/exit.c:510 [inline]
do_exit+0xa12/0x2a00 kernel/exit.c:782
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2904
arch_do_signal_or_restart+0x88/0x1a10 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:180 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:215
__syscall_exit_to_user_mode_work kernel/entry/common.c:297 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:308
do_syscall_64+0x42/0x80 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f717a689049
Code: Unable to access opcode bytes at RIP 0x7f717a68901f.
RSP: 002b:00007f717b7fc218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f717a79bf68 RCX: 00007f717a689049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f717a79bf68
RBP: 00007f717a79bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f717a79bf6c
R13: 00007ffe4a23a8af R14: 00007f717b7fc300 R15: 0000000000022000
rcu: rcu_preempt kthread starved for 5505 jiffies! g21517 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:29208 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1971
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2144
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 6 Comm: kworker/0:0 Tainted: G W 5.17.0-syzkaller-13532-gb4a5ea09b293 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events drain_vmap_area_work
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:490
print_other_cpu_stall kernel/rcu/tree_stall.h:595 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:741 [inline]
rcu_pending kernel/rcu/tree.c:3923 [inline]
rcu_sched_clock_irq+0x1f7c/0x2150 kernel/rcu/tree.c:2625
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e6/0xc90 kernel/smp.c:969
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 2c 89 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e9 05 00 00 8b 43 08 31
RSP: 0018:ffffc900000b7ae8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9d401e0 RCX: 0000000000000000
RDX: ffff888010e81d00 RSI: ffffffff816d13f4 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816d141a R11: 0000000000000000 R12: ffffed10173a803d
R13: 0000000000000001 R14: ffff8880b9d401e8 R15: 0000000000000001
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
__purge_vmap_area_lazy+0x1f6/0x1c50 mm/vmalloc.c:1712
drain_vmap_area_work+0x52/0xe0 mm/vmalloc.c:1762
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
----------------
Code disassembly (best guess):
0: 4c 89 d8 mov %r11,%rax
3: 4c 39 da cmp %r11,%rdx
6: 74 0e je 0x16
8: 80 3a 00 cmpb $0x0,(%rdx)
b: 74 ef je 0xfffffffc
d: 49 8d 04 2c lea (%r12,%rbp,1),%rax
11: 48 85 d2 test %rdx,%rdx
14: 75 0b jne 0x21
16: 48 89 da mov %rbx,%rdx
19: 48 29 c2 sub %rax,%rdx
1c: e9 55 ff ff ff jmpq 0xffffff76
21: 49 39 d2 cmp %rdx,%r10
24: 75 17 jne 0x3d
26: 49 0f be 02 movsbq (%r10),%rax
* 2a: 41 83 e1 07 and $0x7,%r9d <-- trapping instruction
2e: 49 39 c1 cmp %rax,%r9
31: 7d 0a jge 0x3d
33: 5b pop %rbx
34: b8 01 00 00 00 mov $0x1,%eax
39: 5d pop %rbp
3a: 41 5c pop %r12
3c: c3 retq
3d: 44 89 c2 mov %r8d,%edx