rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14735/2:b..l
rcu: (detected by 0, t=10502 jiffies, g=76573, q=331 ncpus=2)
task:syz-executor.3 state:R running task stack:23408 pid:14735 tgid:14734 ppid:5121 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
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:debug_lockdep_rcu_enabled+0x0/0x40 kernel/rcu/update.c:319
Code: ca 8b 48 c7 c6 a0 e4 ca 8b e8 8c 65 ca f5 90 0f 0b 90 90 90 eb c6 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 31 c0 83 3d 67 23 20 04 00 74 1e 83 3d d6 54 20 04 00
RSP: 0018:ffffc90014317158 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffff8880200b9e00
RDX: ffff8880200b9e00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8b88ea17 R09: ffffffff8b8969bb
R10: 0000000000000002 R11: ffff8880200b9e00 R12: ffffc90014317440
R13: 0000000000000010 R14: ffffea0001a5a780 R15: ffff888021bf3e88
rcu_read_lock_held_common kernel/rcu/update.c:105 [inline]
rcu_read_lock_held+0xa/0x50 kernel/rcu/update.c:349
xa_entry include/linux/xarray.h:1220 [inline]
xas_descend lib/xarray.c:207 [inline]
xas_load+0x478/0x5c0 lib/xarray.c:245
xas_find+0x13f/0x960 lib/xarray.c:1266
next_uptodate_folio+0x33/0xb10 mm/filemap.c:3464
filemap_map_pages+0x302/0x1e70 mm/filemap.c:3616
do_fault_around mm/memory.c:5006 [inline]
do_read_fault mm/memory.c:5039 [inline]
do_fault mm/memory.c:5178 [inline]
do_pte_missing mm/memory.c:3948 [inline]
handle_pte_fault+0x3c13/0x7130 mm/memory.c:5502
__handle_mm_fault mm/memory.c:5645 [inline]
handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5810
faultin_page mm/gup.c:1339 [inline]
__get_user_pages+0x6ef/0x1590 mm/gup.c:1638
populate_vma_page_range+0x264/0x330 mm/gup.c:2078
__mm_populate+0x27a/0x460 mm/gup.c:2181
mm_populate include/linux/mm.h:3442 [inline]
vm_mmap_pgoff+0x2c3/0x3d0 mm/util.c:578
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: 0033:0x7fef7307cf69
RSP: 002b:00007fef73ea90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fef731b3f80 RCX: 00007fef7307cf69
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007fef730da6fe R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fef731b3f80 R15: 00007ffee4c55a58
rcu: rcu_preempt kthread starved for 10551 jiffies! g76573 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:26008 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14727 Comm: syz-executor.0 Not tainted 6.10.0-rc2-next-20240607-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:_raw_spin_lock+0x5/0x40 kernel/locking/spinlock.c:153
Code: 00 e8 cf 39 c1 f5 31 ed 89 e8 5b 41 5e 5d c3 cc cc cc cc 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 <48> 89 fb bf 01 00 00 00 e8 de d8 cc f5 48 8d 7b 18 31 f6 31 d2 31
RSP: 0018:ffffc900108bf738 EFLAGS: 00000017
RAX: 1ffffffff1bb9345 RBX: ffff8880b953e8c0 RCX: 0000000000040000
RDX: ffffc9000a79d000 RSI: 000000000003ffff RDI: ffff8880b953f250
RBP: 1ffff110172a7e49 R08: ffffffff818eefd8 R09: 1ffffffff1f5c04d
R10: dffffc0000000000 R11: fffffbfff1f5c04e R12: ffff8880b953e8c0
R13: 00000000000071df R14: ffff8880b953f248 R15: dffffc0000000000
FS: 00007f7df956c6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffe8 CR3: 000000002cd2a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
update_curr_rt+0x126/0x560 kernel/sched/rt.c:1021
dequeue_task_rt+0x2c/0x680 kernel/sched/rt.c:1499
deactivate_task kernel/sched/core.c:2024 [inline]
__schedule+0x60e/0x4a20 kernel/sched/core.c:6475
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
__futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
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: 0033:0x7f7df887cf69
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:00007f7df956c178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f7df89b3f88 RCX: 00007f7df887cf69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7df89b3f88
RBP: 00007f7df89b3f80 R08: 00007f7df956c6c0 R09: 00007f7df956c6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7df89b3f8c
R13: 000000000000004d R14: 00007ffec574a650 R15: 00007ffec574a738