rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (2 ticks this GP) idle=055/1/0x4000000000000000 softirq=249751/249751 fqs=0
(detected by 1, t=10502 jiffies, g=476417, q=767)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 30739 Comm: syz-executor.1 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:202 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:513 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
RIP: 0010:do_raw_spin_lock+0x132/0x2b0 kernel/locking/spinlock_debug.c:115
Code: 00 00 00 00 e8 ef 93 61 00 be 04 00 00 00 48 8d 7c 24 28 e8 e0 93 61 00 8b 44 24 28 ba 01 00 00 00 89 44 24 04 f0 0f b1 55 00 <0f> 85 91 00 00 00 65 44 8b 35 38 f3 a4 7e 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000007da8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff92000000fb6 RCX: ffffffff815ca210
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007dd0
RBP: ffff8880b9c223c0 R08: 0000000000000001 R09: 0000000000000003
R10: fffff52000000fba R11: 0000000000000000 R12: ffff8880b9c223c8
R13: ffff8880b9c223d0 R14: ffff8880b9c223c0 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f821000 CR3: 000000000b68e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x243/0xe50 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:_compound_head include/linux/page-flags.h:189 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:362 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1959 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1968 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1361 [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+0xdd9/0x2a10 mm/memory.c:1552
Code: 44 89 ee e8 d9 81 ca ff 45 84 ed 0f 85 c7 00 00 00 e8 8b 7b ca ff 4c 8b 6d 08 31 ff 4c 89 eb 83 e3 01 48 89 de e8 d7 80 ca ff <48> 85 db 0f 85 2f 13 00 00 e8 69 7b ca ff 48 89 eb e8 61 7b ca ff
RSP: 0018:ffffc9000be777b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880837e1c80 RDI: 0000000000000003
RBP: ffffea00013cd3c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81ac61a9 R11: 0000000000000000 R12: ffffea00013cd3c8
R13: 0000000000000000 R14: dffffc0000000000 R15: 00007fa18f7cd000
unmap_single_vma+0x198/0x310 mm/memory.c:1597
unmap_vmas+0x16d/0x2f0 mm/memory.c:1629
exit_mmap+0x1d0/0x630 mm/mmap.c:3171
__mmput+0x122/0x4b0 kernel/fork.c:1115
mmput+0x58/0x60 kernel/fork.c:1136
exit_mm kernel/exit.c:501 [inline]
do_exit+0xabc/0x2a30 kernel/exit.c:812
do_group_exit+0x125/0x310 kernel/exit.c:922
get_signal+0x47f/0x21d0 kernel/signal.c:2855
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
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: 0033:0x7fa190c27a39
Code: Unable to access opcode bytes at RIP 0x7fa190c27a0f.
RSP: 002b:00007fa18e19d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000024 RBX: 00007fa190d2af60 RCX: 00007fa190c27a39
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007fa190c81e8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc1d9f70f R14: 00007fa18e19d300 R15: 0000000000022000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g476417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=142291
rcu: rcu_preempt kthread starved for 10502 jiffies! g476417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28568 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xb44/0x5960 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x800 kernel/rcu/tree.c:1957
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2130
kthread+0x3e5/0x4d0 kernel/kthread.c:319
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 30739 Comm: syz-executor.1 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
RIP: 0010:lock_release+0x3c8/0x720 kernel/locking/lockdep.c:5647
Code: 2b 44 24 40 45 39 87 18 0a 00 00 0f 85 29 02 00 00 48 c7 c7 60 ff 8b 89 e8 65 2c da 07 b8 ff ff ff ff 65 0f c1 05 e8 c7 a5 7e <83> f8 01 0f 85 8d 01 00 00 9c 58 f6 c4 02 0f 85 78 01 00 00 48 f7
RSP: 0018:ffffc90000007d08 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 715fba17acaa8f9b RCX: ffffc90000007d58
RDX: 1ffff110106fc4d2 RSI: 0000000000010001 RDI: 0000000000000000
RBP: 1ffff92000000fa3 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000002 R14: ffff8880837e2698 R15: ffff8880837e1c80
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f821000 CR3: 000000000b68e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:272 [inline]
rcu_read_unlock include/linux/rcupdate.h:720 [inline]
advance_sched+0x507/0x9a0 net/sched/sch_taprio.c:765
__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:_compound_head include/linux/page-flags.h:189 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:362 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1959 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1968 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1361 [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+0xdd9/0x2a10 mm/memory.c:1552
Code: 44 89 ee e8 d9 81 ca ff 45 84 ed 0f 85 c7 00 00 00 e8 8b 7b ca ff 4c 8b 6d 08 31 ff 4c 89 eb 83 e3 01 48 89 de e8 d7 80 ca ff <48> 85 db 0f 85 2f 13 00 00 e8 69 7b ca ff 48 89 eb e8 61 7b ca ff
RSP: 0018:ffffc9000be777b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880837e1c80 RDI: 0000000000000003
RBP: ffffea00013cd3c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81ac61a9 R11: 0000000000000000 R12: ffffea00013cd3c8
R13: 0000000000000000 R14: dffffc0000000000 R15: 00007fa18f7cd000
unmap_single_vma+0x198/0x310 mm/memory.c:1597
unmap_vmas+0x16d/0x2f0 mm/memory.c:1629
exit_mmap+0x1d0/0x630 mm/mmap.c:3171
__mmput+0x122/0x4b0 kernel/fork.c:1115
mmput+0x58/0x60 kernel/fork.c:1136
exit_mm kernel/exit.c:501 [inline]
do_exit+0xabc/0x2a30 kernel/exit.c:812
do_group_exit+0x125/0x310 kernel/exit.c:922
get_signal+0x47f/0x21d0 kernel/signal.c:2855
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
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: 0033:0x7fa190c27a39
Code: Unable to access opcode bytes at RIP 0x7fa190c27a0f.
RSP: 002b:00007fa18e19d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000024 RBX: 00007fa190d2af60 RCX: 00007fa190c27a39
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 00007fa190c81e8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc1d9f70f R14: 00007fa18e19d300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: e8 ef 93 61 00 callq 0x6193f8
9: be 04 00 00 00 mov $0x4,%esi
e: 48 8d 7c 24 28 lea 0x28(%rsp),%rdi
13: e8 e0 93 61 00 callq 0x6193f8
18: 8b 44 24 28 mov 0x28(%rsp),%eax
1c: ba 01 00 00 00 mov $0x1,%edx
21: 89 44 24 04 mov %eax,0x4(%rsp)
25: f0 0f b1 55 00 lock cmpxchg %edx,0x0(%rbp)
* 2a: 0f 85 91 00 00 00 jne 0xc1 <-- trapping instruction
30: 65 44 8b 35 38 f3 a4 mov %gs:0x7ea4f338(%rip),%r14d # 0x7ea4f370
37: 7e
38: 48 rex.W
39: b8 00 00 00 00 mov $0x0,%eax
3e: 00 fc add %bh,%ah