rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=643c/1/0x4000000000000000 softirq=51385/51386 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15881/1:b..l
	(detected by 1, t=10506 jiffies, g=76105, q=59 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15875 Comm: syz-executor.5 Not tainted 6.1.36-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:kasan_check_range+0x1ac/0x290 mm/kasan/generic.c:189
Code: 4c 89 d5 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 39 00 0f 85 a2 00 00 00 49 ff c1 48 ff cd 75 ee 5b <41> 5e 41 5f 5d c3 45 84 f6 75 61 41 f7 c6 00 ff 00 00 75 5d 41 f7
RSP: 0018:ffffc90000007a40 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 000000000000002a RCX: ffffffff8169eaa0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9028c220
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff2051845
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880771f6418
R13: ffff8880771f5940 R14: fffffbfff2051845 R15: 1ffff1100ee3ec88
FS:  00007efead102700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000c030 CR3: 000000007da17000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 __lock_acquire+0x11d0/0x1f80 kernel/locking/lockdep.c:5053
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5669
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:306
 rcu_read_lock include/linux/rcupdate.h:747 [inline]
 advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:753
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:unix_wait_for_peer+0x28f/0x330 net/unix/af_unix.c:1452
Code: 06 00 00 4c 89 f7 e8 60 38 4b 01 4c 89 e7 48 8d 74 24 40 e8 83 7e 24 f8 48 c7 44 24 20 0e 36 e0 45 43 c7 44 3d 00 00 00 00 00 <43> c7 44 3d 09 00 00 00 00 66 43 c7 44 3d 0d 00 00 43 c6 44 3d 0f
RSP: 0018:ffffc9000ad0f600 EFLAGS: 00000282
RAX: ffffc9000ad0f658 RBX: 7fffffffffffffff RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffc9000ad0f640 RDI: ffff8880771f70a8
RBP: ffffc9000ad0f6f0 R08: dffffc0000000000 R09: ffffed100ee3eb29
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807e26fec0
R13: dffffc0000000000 R14: ffff88807e26fe68 R15: 1ffff920015a1ec4
 unix_dgram_sendmsg+0x1348/0x2050 net/unix/af_unix.c:2047
 sock_sendmsg_nosec net/socket.c:716 [inline]
 sock_sendmsg net/socket.c:736 [inline]
 ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmmsg+0x3ab/0x730 net/socket.c:2622
 __do_sys_sendmmsg net/socket.c:2651 [inline]
 __se_sys_sendmmsg net/socket.c:2648 [inline]
 __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2648
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7efeac48c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efead102168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007efeac5abf80 RCX: 00007efeac48c389
RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004
RBP: 00007efeac4d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc39b6d7bf R14: 00007efead102300 R15: 0000000000022000
 </TASK>
task:syz-executor.4  state:R  running task     stack:26280 pid:15881 ppid:3579   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x132c/0x4330 kernel/sched/core.c:6554
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6723
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6747
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x128/0x130 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
 timerfd_clock_was_set+0x1b3/0x2a0 fs/timerfd.c:113
 clock_was_set+0x86e/0x900 kernel/time/hrtimer.c:980
 timekeeping_inject_offset+0x65f/0x710 kernel/time/timekeeping.c:1395
 do_adjtimex+0x511/0xaa0 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1122 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1134 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1125 [inline]
 __x64_sys_clock_adjtime+0x1dc/0x290 kernel/time/posix-timers.c:1125
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f39e1e8c389
RSP: 002b:00007f39e2b67168 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f39e1fac050 RCX: 00007f39e1e8c389
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f39e1ed7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebb08d4df R14: 00007f39e2b67300 R15: 0000000000022000
 </TASK>
rcu: rcu_preempt kthread starved for 10506 jiffies! g76105 f0x0 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:26712 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x132c/0x4330 kernel/sched/core.c:6554
 schedule+0xbf/0x180 kernel/sched/core.c:6630
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935
 rcu_gp_fqs_loop+0x2c2/0x1010 kernel/rcu/tree.c:1661
 rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1860
 kthread+0x26e/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 15884 Comm: syz-executor.5 Not tainted 6.1.36-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0x1f62/0x33d0 kernel/smp.c:987
Code: 2f 44 89 ee 83 e6 01 31 ff e8 9a 11 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 0a e8 25 0e 0b 00 e9 1b ff ff ff f3 90 <42> 0f b6 04 2b 84 c0 75 14 41 f7 07 01 00 00 00 0f 84 fe fe ff ff
RSP: 0000:ffffc90009ea7560 EFLAGS: 00000246
RAX: ffffffff817ecddd RBX: 1ffff11017308415 RCX: 0000000000040000
RDX: ffffc9000cfb2000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90009ea7940 R08: ffffffff817ecda6 R09: fffffbfff2051847
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000800000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b98420a8
FS:  00007efeaafdd700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efea2bbe1fe CR3: 000000007da17000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1155
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:924 [inline]
 flush_tlb_mm_range+0x353/0x590 arch/x86/mm/tlb.c:1010
 flush_tlb_page arch/x86/include/asm/tlbflush.h:240 [inline]
 ptep_clear_flush+0x116/0x160 mm/pgtable-generic.c:98
 wp_page_copy+0xafe/0x1740 mm/memory.c:3180
 handle_pte_fault mm/memory.c:4982 [inline]
 __handle_mm_fault mm/memory.c:5106 [inline]
 handle_mm_fault+0x2522/0x5330 mm/memory.c:5227
 do_user_addr_fault arch/x86/mm/fault.c:1428 [inline]
 handle_page_fault arch/x86/mm/fault.c:1519 [inline]
 exc_page_fault+0x58d/0x790 arch/x86/mm/fault.c:1575
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7efeac429041
Code: 08 77 56 8d 55 ff 85 ed 74 35 0f 1f 80 00 00 00 00 48 39 c1 77 1c 49 8b 75 00 49 89 c1 49 29 c9 46 0f b6 0c 0e 45 84 c9 74 08 <44> 88 0c 06 49 8b 45 10 48 83 c0 01 49 89 45 10 83 ea 01 73 d2 41
RSP: 002b:00007efeaafdc600 EFLAGS: 00010206
RAX: 00000000000011fe RBX: 00007efeaafdc660 RCX: 0000000000000200
RDX: 0000000000000101 RSI: 00007efea2bbd000 RDI: 00007efeaafdc700
RBP: 0000000000000102 R08: 0000000000000002 R09: 0000000000000055
R10: 0000000000000007 R11: 00000000000014fa R12: 00007efeaafdc670
R13: 00007efeaafdc700 R14: 0000000000000181 R15: 0000000000000011
 </TASK>