rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=6953, q=36 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294954427-4294943925), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g6953 f0x2 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:25816 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870 irqentry_exit+0x53/0x80 kernel/entry/common.c:439 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [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+0x68/0x290 mm/kasan/generic.c:189 Code: fc ff df 4e 8d 0c 03 4c 8d 54 37 ff 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 <48> 85 ed 0f 84 3a 01 00 00 49 f7 d2 49 01 da 41 80 39 00 0f 85 c4 RSP: 0018:ffffc90000157b70 EFLAGS: 00000283 RAX: 0000000000000001 RBX: 1ffff11027fddb28 RCX: ffffffff8a938926 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813feed940 RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed1027fddb28 R10: 1ffff11027fddb28 R11: dffffc0000000001 R12: ffff88813feed940 R13: 1ffff9200002af78 R14: ffffed1027fddb29 R15: dffffc0000000000 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] test_ti_thread_flag include/linux/thread_info.h:118 [inline] need_resched include/linux/sched.h:2231 [inline] schedule+0xd6/0x180 kernel/sched/core.c:6636 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 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: 3818 Comm: syz-executor.3 Not tainted 6.1.92-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:native_apic_msr_eoi_write+0xb/0x10 arch/x86/include/asm/apic.h:212 Code: 3c 28 00 74 08 48 89 df e8 82 81 a6 00 48 8b 03 bf f0 03 00 00 44 89 f6 5b 41 5e 5d ff e0 90 b9 0b 08 00 00 31 c0 31 d2 0f 30 0f 1f 40 00 81 ff cf 00 00 00 7f 0c 83 ff 20 74 2a 83 ff 30 74 RSP: 0018:ffffc90000007fd8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffffffff8cb14a10 RCX: 000000000000080b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000000b0 RBP: 0000000000000000 R08: ffffffff8fe9f000 R09: ffffffff8fe9f008 R10: ffffffff8fe9f018 R11: ffffffff8fe9f010 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f2c2d4b06c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32824000 CR3: 0000000055db0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_eoi arch/x86/include/asm/apic.h:399 [inline] ack_APIC_irq arch/x86/include/asm/apic.h:445 [inline] __sysvec_irq_work+0x51/0x360 arch/x86/kernel/irq_work.c:19 sysvec_irq_work+0x89/0xb0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:679 RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5124 Code: 37 0b 00 48 83 c4 08 4c 89 f7 e8 98 30 00 00 e9 8f 04 00 00 4c 89 f7 e8 7b 20 36 09 e8 36 26 32 00 fb 49 8d bc 24 f8 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28 RSP: 0018:ffffc90004b378a8 EFLAGS: 00000286 RAX: 22467434cf20bd00 RBX: ffff8880b983b748 RCX: ffffffff91c94103 RDX: dffffc0000000000 RSI: ffffffff8aec01c0 RDI: ffff8880548fef38 RBP: ffffc90004b378f0 R08: dffffc0000000000 R09: ffffed1017307541 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880548fd940 R13: 1ffff110173076eb R14: ffff8880b983aa00 R15: ffff8880b983b758 context_switch kernel/sched/core.c:5248 [inline] __schedule+0x1435/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 futex_wait_queue+0x149/0x1d0 kernel/futex/waitwake.c:355 futex_wait+0x203/0x5c0 kernel/futex/waitwake.c:656 do_futex+0x3b5/0x490 kernel/futex/syscalls.c:106 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex+0x3d7/0x460 kernel/futex/syscalls.c:164 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2c2c67cee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2c2d4b0178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f2c2c7b3f88 RCX: 00007f2c2c67cee9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2c2c7b3f88 RBP: 00007f2c2c7b3f80 R08: 00007f2c2d4b06c0 R09: 00007f2c2d4b06c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2c2c7b3f8c R13: 000000000000000b R14: 00007ffffeb9a5a0 R15: 00007ffffeb9a688