rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8037/1:b..l P7993/1:b..l P8044/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=30501, q=502 ncpus=2)
task:rm state:R running task stack:24992 pid:8044 tgid:8044 ppid:8007 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:mas_data_end lib/maple_tree.c:1453 [inline]
RIP: 0010:mt_validate_nulls lib/maple_tree.c:7552 [inline]
RIP: 0010:mt_validate+0x4431/0x4aa0 lib/maple_tree.c:7599
Code: 00 48 89 5c 24 58 44 89 f3 bf 04 00 00 00 44 89 f6 e8 13 f7 19 f6 41 83 fe 03 0f 87 43 04 00 00 e8 c4 f2 19 f6 48 89 5c 24 28 <4c> 8d a3 00 5e ec 8c 4c 89 e0 48 c1 e8 03 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90004cbf2c0 EFLAGS: 00000293
RAX: ffffffff8b7c23bc RBX: 0000000000000001 RCX: ffff8880238b9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffffc90004cbf4b0 R08: ffffffff8b7c23ad R09: ffffffff8b7c2305
R10: 0000000000000003 R11: ffff8880238b9e00 R12: 1ffff92000997e7b
R13: ffff88807abaa000 R14: 0000000000000001 R15: ffff8880249de7f8
validate_mm+0xe7/0x530 mm/mmap.c:288
__split_vma+0xaca/0xc30 mm/mmap.c:2440
do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2605
do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2759
mmap_region+0x72f/0x2090 mm/mmap.c:2810
do_mmap+0x8ad/0xfa0 mm/mmap.c:1397
vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:573
ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1443
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f789d83bb74
RSP: 002b:00007ffe3f55d658 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe3f55d698 RCX: 00007f789d83bb74
RDX: 0000000000000005 RSI: 0000000000123000 RDI: 00007f789d5cc000
RBP: 00007ffe3f55ddf0 R08: 0000000000000003 R09: 0000000000028000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f789d8185c0
R13: 00007ffe3f55de78 R14: 0000000000027f38 R15: 0000000000000000
task:syz-executor.5 state:R running task stack:23984 pid:7993 tgid:7992 ppid:5109 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 9a 7f 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000916f480 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200122de9c RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacc00 RDI: ffffffff8c1ff200
RBP: ffffc9000916f5c8 R08: ffffffff92fa8587 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: 1ffff9200122de98
R13: dffffc0000000000 R14: ffffc9000916f4e0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
__pte_offset_map+0x9e/0x380 mm/pgtable-generic.c:287
__pte_offset_map_lock+0xc7/0x300 mm/pgtable-generic.c:371
pte_offset_map_lock include/linux/mm.h:3020 [inline]
follow_page_pte+0x11b/0x1d90 mm/gup.c:915
follow_pmd_mask mm/gup.c:1040 [inline]
follow_pud_mask mm/gup.c:1095 [inline]
follow_p4d_mask mm/gup.c:1116 [inline]
follow_page_mask+0x766/0x2e00 mm/gup.c:1162
__get_user_pages+0x67e/0x1590 mm/gup.c:1587
populate_vma_page_range+0x264/0x330 mm/gup.c:2029
__mm_populate+0x27a/0x460 mm/gup.c:2132
do_mlock+0x61e/0x7b0 mm/mlock.c:664
__do_sys_mlock mm/mlock.c:672 [inline]
__se_sys_mlock mm/mlock.c:670 [inline]
__x64_sys_mlock+0x60/0x70 mm/mlock.c:670
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac1cc7cee9
RSP: 002b:00007fac1da990c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000095
RAX: ffffffffffffffda RBX: 00007fac1cdb3fa0 RCX: 00007fac1cc7cee9
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020000000
RBP: 00007fac1ccc947f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fac1cdb3fa0 R15: 00007ffdcef4cfb8
task:syz-executor.1 state:R running task stack:25744 pid:8037 tgid:8035 ppid:5123 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6924
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6948
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1682 [inline]
zap_pmd_range mm/memory.c:1730 [inline]
zap_pud_range mm/memory.c:1759 [inline]
zap_p4d_range mm/memory.c:1780 [inline]
unmap_page_range+0x4206/0x4d00 mm/memory.c:1801
unmap_vmas+0x3cc/0x5f0 mm/memory.c:1891
exit_mmap+0x264/0xc80 mm/mmap.c:3341
__mmput+0x115/0x3c0 kernel/fork.c:1346
exit_mm+0x220/0x310 kernel/exit.c:565
do_exit+0x9aa/0x27e0 kernel/exit.c:861
do_group_exit+0x207/0x2c0 kernel/exit.c:1023
get_signal+0x16a1/0x1740 kernel/signal.c:2909
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa018a7cee9
RSP: 002b:00007fa0198ac178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fa018bb3fa8 RCX: 00007fa018a7cee9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa018bb3fac
RBP: 00007fa018bb3fa0 R08: 7fffffffffffffff R09: 00007fa0198ac6c0
R10: 0000000000000030 R11: 0000000000000246 R12: 00007fa018bb3fac
R13: 000000000000000b R14: 00007fff00904ec0 R15: 00007fff00904fa8
rcu: rcu_preempt kthread starved for 10473 jiffies! g30501 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:24976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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 PID: 0 Comm: swapper/1 Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d5 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d b5 14 a3 00 f3 0f 1e fa fb f4 e9 54 d3 29 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff8880176e0000 RBX: ffff888018ee7064 RCX: 000000000005b941
RDX: 0000000000000001 RSI: ffff888018ee7000 RDI: ffff888018ee7064
RBP: 000000000003a5b8 R08: ffff8880b9537d0b R09: 1ffff110172a6fa1
R10: dffffc0000000000 R11: ffffffff8b866960 R12: ffff88801a367000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eace2c0
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f789d813108 CR3: 000000007e362000 CR4: 0000000000350ef0
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147