rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13290/1:b..l rcu: (detected by 1, t=10502 jiffies, g=105297, q=458 ncpus=2) task:modprobe state:R running task stack:26384 pid:13290 tgid:13290 ppid:9101 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0xe37/0x5490 kernel/sched/core.c:6529 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_region_inline mm/kasan/generic.c:169 [inline] RIP: 0010:kasan_check_range+0xe0/0x1a0 mm/kasan/generic.c:189 Code: 83 c0 01 48 39 c2 0f 84 8d 00 00 00 80 38 00 74 ee 48 89 c2 b8 01 00 00 00 48 85 d2 74 1e 41 83 e2 07 49 39 d1 75 0a 45 3a 11 01 00 00 00 7c 0b 44 89 c2 e8 a1 ea ff ff 83 f0 01 5b 5d 41 5c RSP: 0018:ffffc9000306f5c0 EFLAGS: 00000297 RAX: 0000000000000001 RBX: fffffbfff2a541f9 RCX: ffffffff8afe04a9 RDX: fffffbfff2a541f8 RSI: 0000000000000004 RDI: ffffffff952a0fc0 RBP: fffffbfff2a541f8 R08: 0000000000000001 R09: fffffbfff2a541f8 R10: 0000000000000003 R11: 0000000000000000 R12: 000000000000000c R13: ffff88802e3816c8 R14: 0000000000000300 R15: 0000000000000000 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc include/linux/atomic/atomic-instrumented.h:435 [inline] mt_validate_nulls+0x5e9/0x9e0 lib/maple_tree.c:7547 mt_validate+0x3148/0x4390 lib/maple_tree.c:7596 validate_mm+0x9c/0x4b0 mm/mmap.c:329 do_vmi_align_munmap+0x14b4/0x19c0 mm/mmap.c:2759 do_vmi_munmap+0x231/0x410 mm/mmap.c:2830 mmap_region+0x17f/0x2760 mm/mmap.c:2881 do_mmap+0xbfb/0xfb0 mm/mmap.c:1468 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:588 ksys_mmap_pgoff+0x332/0x5d0 mm/mmap.c:1514 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe93130db74 RSP: 002b:00007fff2f4c17c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fff2f4c1878 RCX: 00007fe93130db74 RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007fe93103d000 RBP: 00007fff2f4c1b60 R08: 0000000000000000 R09: 0000000000052000 R10: 0000000000000812 R11: 0000000000000246 R12: 00007fe9312eb570 R13: 00007fff2f4c1be8 R14: 0000000000052120 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10533 jiffies! g105297 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:26160 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0xe37/0x5490 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6621 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 88 d7 f2 74 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 38 f8 aa 00 fb f4 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900001a7d58 EFLAGS: 00000246 RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8b10e699 RDX: 0000000000000001 RSI: ffff88801c6a0800 RDI: ffff88801c6a0864 RBP: ffff88801c6a0864 R08: 0000000000000001 R09: ffffed1017266fd9 R10: ffff8880b9337ecb R11: 0000000000000000 R12: ffff88801a773800 R13: ffffffff8e9520c0 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002006b000 CR3: 000000002d634000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:702 cpuidle_enter_state+0x85/0x500 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388 cpuidle_idle_call kernel/sched/idle.c:230 [inline] do_idle+0x313/0x3f0 kernel/sched/idle.c:326 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:424 start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313 common_startup_64+0x13e/0x148