rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=467/1/0x4000000000000000 softirq=55139/55139 fqs=0
(detected by 0, t=10502 jiffies, g=75789, q=1065)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22643 Comm: syz-executor.3 Not tainted 5.16.0-rc8-next-20220107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:match_held_lock+0x70/0xc0 kernel/locking/lockdep.c:5116
Code: 06 48 0f af c2 0f b7 53 20 81 e2 ff 1f 00 00 48 39 d0 0f 94 c0 48 83 c4 08 0f b6 c0 5b c3 31 f6 e8 c5 fe ff ff 48 85 c0 75 b2 <31> c0 48 83 c4 08 5b c3 48 83 c4 08 b8 01 00 00 00 5b c3 e8 68 bc
RSP: 0018:ffffc90000dc0c10 EFLAGS: 00000046
RAX: 000000000000000a RBX: ffff888031576278 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8bb82920 RDI: ffff888031576278
RBP: ffffffff8bb82920 R08: 0000000000000000 R09: ffffffff8d944d57
R10: fffffbfff1b289aa R11: 0000000000000001 R12: ffff8880315757c0
R13: ffff888031576228 R14: 00000000ffffffff R15: ffff888031576278
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565bf708 CR3: 00000000286c2000 CR4: 00000000003506e0
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5380 [inline]
lock_is_held_type+0xa7/0x140 kernel/locking/lockdep.c:5682
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5650
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194
debug_object_deactivate lib/debugobjects.c:757 [inline]
debug_object_deactivate+0x264/0x300 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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:vm_normal_page+0x42/0x2a0 mm/memory.c:611
Code: ff df 48 83 ec 68 48 c7 44 24 08 b3 8a b5 41 48 8d 6c 24 08 48 c7 44 24 10 e5 66 3b 8b 48 c1 ed 03 48 c7 44 24 18 90 6d af 81 <48> 8d 44 1d 00 c7 00 f1 f1 f1 f1 c7 40 04 00 f3 f3 f3 65 48 8b 04
RSP: 0018:ffffc900111bf6c0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 8000000027ac2007 RSI: 00007f26522d4000 RDI: ffff88808e073e70
RBP: 1ffff92002237ed9 R08: 0000000000000000 R09: ffff8880315757c7
R10: ffffffff81af7fb7 R11: 0000000000000000 R12: ffff88808e073e70
R13: 00007f26522d4000 R14: dffffc0000000000 R15: 0000000000000007
zap_pte_range mm/memory.c:1339 [inline]
zap_pmd_range mm/memory.c:1468 [inline]
zap_pud_range mm/memory.c:1497 [inline]
zap_p4d_range mm/memory.c:1518 [inline]
unmap_page_range+0xbf4/0x35d0 mm/memory.c:1539
unmap_single_vma+0x198/0x310 mm/memory.c:1584
unmap_vmas+0x16b/0x2f0 mm/memory.c:1616
exit_mmap+0x201/0x670 mm/mmap.c:3179
__mmput+0x122/0x4b0 kernel/fork.c:1116
mmput+0x56/0x60 kernel/fork.c:1137
exit_mm kernel/exit.c:507 [inline]
do_exit+0xa44/0x2b10 kernel/exit.c:780
do_group_exit+0x128/0x330 kernel/exit.c:932
get_signal+0x4b0/0x28c0 kernel/signal.c:2868
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: 0033:0x7f2652c4ce99
Code: Unable to access opcode bytes at RIP 0x7f2652c4ce6f.
RSP: 002b:00007f26515c2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2652d5ff68 RCX: 00007f2652c4ce99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2652d5ff68
RBP: 00007f2652d5ff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2652d5ff6c
R13: 00007fff1e7c223f R14: 00007f26515c2300 R15: 0000000000022000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g75789 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=27901
rcu: rcu_preempt kthread starved for 10502 jiffies! g75789 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28720 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2145
kthread+0x2e9/0x3a0 kernel/kthread.c:377
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: 22643 Comm: syz-executor.3 Not tainted 5.16.0-rc8-next-20220107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:232 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1194 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x83/0x140 kernel/rcu/tree.c:1178
Code: 3c 02 00 0f 85 a4 00 00 00 48 03 1c ed a0 f8 58 8b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 20 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 87 00 00 00 48 8d 7b 18 48 8b 6b 20 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000dc0ca8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff8880b9d3ab00 RCX: ffffffff815ce4e8
RDX: 1ffff110173a7564 RSI: 0000000000010004 RDI: ffff8880b9d3ab20
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8d944d57
R10: fffffbfff1b289aa R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88807e81a300 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565bf708 CR3: 00000000286c2000 CR4: 00000000003506e0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x442/0x510 kernel/locking/lockdep.c:5610
__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:354 [inline]
advance_sched+0x53/0x9a0 net/sched/sch_taprio.c:714
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 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:638
RIP: 0010:vm_normal_page+0x42/0x2a0 mm/memory.c:611
Code: ff df 48 83 ec 68 48 c7 44 24 08 b3 8a b5 41 48 8d 6c 24 08 48 c7 44 24 10 e5 66 3b 8b 48 c1 ed 03 48 c7 44 24 18 90 6d af 81 <48> 8d 44 1d 00 c7 00 f1 f1 f1 f1 c7 40 04 00 f3 f3 f3 65 48 8b 04
RSP: 0018:ffffc900111bf6c0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 8000000027ac2007 RSI: 00007f26522d4000 RDI: ffff88808e073e70
RBP: 1ffff92002237ed9 R08: 0000000000000000 R09: ffff8880315757c7
R10: ffffffff81af7fb7 R11: 0000000000000000 R12: ffff88808e073e70
R13: 00007f26522d4000 R14: dffffc0000000000 R15: 0000000000000007
zap_pte_range mm/memory.c:1339 [inline]
zap_pmd_range mm/memory.c:1468 [inline]
zap_pud_range mm/memory.c:1497 [inline]
zap_p4d_range mm/memory.c:1518 [inline]
unmap_page_range+0xbf4/0x35d0 mm/memory.c:1539
unmap_single_vma+0x198/0x310 mm/memory.c:1584
unmap_vmas+0x16b/0x2f0 mm/memory.c:1616
exit_mmap+0x201/0x670 mm/mmap.c:3179
__mmput+0x122/0x4b0 kernel/fork.c:1116
mmput+0x56/0x60 kernel/fork.c:1137
exit_mm kernel/exit.c:507 [inline]
do_exit+0xa44/0x2b10 kernel/exit.c:780
do_group_exit+0x128/0x330 kernel/exit.c:932
get_signal+0x4b0/0x28c0 kernel/signal.c:2868
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: 0033:0x7f2652c4ce99
Code: Unable to access opcode bytes at RIP 0x7f2652c4ce6f.
RSP: 002b:00007f26515c2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2652d5ff68 RCX: 00007f2652c4ce99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2652d5ff68
RBP: 00007f2652d5ff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2652d5ff6c
R13: 00007fff1e7c223f R14: 00007f26515c2300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 0f af c2 imul %rdx,%rax
4: 0f b7 53 20 movzwl 0x20(%rbx),%edx
8: 81 e2 ff 1f 00 00 and $0x1fff,%edx
e: 48 39 d0 cmp %rdx,%rax
11: 0f 94 c0 sete %al
14: 48 83 c4 08 add $0x8,%rsp
18: 0f b6 c0 movzbl %al,%eax
1b: 5b pop %rbx
1c: c3 retq
1d: 31 f6 xor %esi,%esi
1f: e8 c5 fe ff ff callq 0xfffffee9
24: 48 85 c0 test %rax,%rax
27: 75 b2 jne 0xffffffdb
* 29: 31 c0 xor %eax,%eax <-- trapping instruction
2b: 48 83 c4 08 add $0x8,%rsp
2f: 5b pop %rbx
30: c3 retq
31: 48 83 c4 08 add $0x8,%rsp
35: b8 01 00 00 00 mov $0x1,%eax
3a: 5b pop %rbx
3b: c3 retq
3c: e8 .byte 0xe8
3d: 68 .byte 0x68
3e: bc .byte 0xbc