rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5303/1:b..l P5283/3:b..l
rcu: (detected by 1, t=10502 jiffies, g=9057, q=857 ncpus=2)
task:syz-executor.0 state:R running task stack:24048 pid:5283 tgid:5282 ppid:5106 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 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]
filemap_map_pages+0x1707/0x1e70 mm/filemap.c:3654
do_fault_around mm/memory.c:4884 [inline]
do_read_fault mm/memory.c:4917 [inline]
do_fault mm/memory.c:5056 [inline]
do_pte_missing mm/memory.c:3903 [inline]
handle_pte_fault+0x3c13/0x7130 mm/memory.c:5380
__handle_mm_fault mm/memory.c:5523 [inline]
handle_mm_fault+0xfb0/0x19d0 mm/memory.c:5688
faultin_page mm/gup.c:1290 [inline]
__get_user_pages+0x6ef/0x1590 mm/gup.c:1589
populate_vma_page_range+0x264/0x330 mm/gup.c:2029
__mm_populate+0x27a/0x460 mm/gup.c:2132
mm_populate include/linux/mm.h:3464 [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: 0033:0x7f3308c7cea9
RSP: 002b:00007f330994c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f3308db3f80 RCX: 00007f3308c7cea9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f3308cebff4 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3308db3f80 R15: 00007ffce487ec78
task:modprobe state:R running task stack:23680 pid:5303 tgid:5303 ppid:1110 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 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 ba 3a 86 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:ffffc90004a5f600 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200094becc RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1f2480
RBP: ffffc90004a5f748 R08: ffffffff92f74587 R09: 1ffffffff25ee8b0
R10: dffffc0000000000 R11: fffffbfff25ee8b1 R12: 1ffff9200094bec8
R13: dffffc0000000000 R14: ffffc90004a5f660 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
do_vmi_align_munmap+0xb4c/0x18c0 mm/mmap.c:2648
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: 0033:0x7f39c47cfb74
RSP: 002b:00007ffe1d3b5da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffe1d3b5e20 RCX: 00007f39c47cfb74
RDX: 0000000000000001 RSI: 0000000000053000 RDI: 00007f39c4683000
RBP: 00007ffe1d3b6540 R08: 0000000000000000 R09: 000000000014b000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007f39c47ac5c0
R13: 00007ffe1d3b65c8 R14: 000000000014ab8e R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10567 jiffies! g9057 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:25520 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 5286 Comm: syz-executor.4 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5282
Code: c9 50 e8 99 c9 0b 00 48 83 c4 08 4c 89 f7 e8 cd 38 00 00 e9 de 04 00 00 4c 89 f7 e8 50 23 22 0a e8 6b f8 36 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc9000490f628 EFLAGS: 00000282
RAX: 502ce5dd6a295400 RBX: ffff888025fcbc00 RCX: ffffffff9476c603
RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: ffffffff8c1f2480
RBP: ffffc9000490f670 R08: ffffffff8fac246f R09: 1ffffffff1f5848d
R10: dffffc0000000000 R11: fffffbfff1f5848e R12: 1ffff110172a7e9f
R13: dffffc0000000000 R14: ffff8880b943e780 R15: ffff8880b953f4f8
FS: 00007f296ffbd6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f46ab98ef00 CR3: 000000007e062000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
context_switch kernel/sched/core.c:5411 [inline]
__schedule+0x179e/0x49d0 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_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:__schedule_loop kernel/sched/core.c:6824 [inline]
RIP: 0010:schedule+0x138/0x320 kernel/sched/core.c:6837
Code: be 01 00 00 00 e8 b8 ee ff f8 48 c7 c7 60 10 1f 8e 4c 89 f6 e8 e9 64 eb f5 48 89 eb 48 c1 eb 03 eb 0a 48 f7 45 00 08 00 00 00 <74> 2c bf 01 00 00 00 e8 ec 72 de f5 31 ff e8 d5 b4 ff ff bf 01 00
RSP: 0018:ffffc9000490fa00 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 1ffff11004bf9780 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcabb80 RDI: 0000000000000001
RBP: ffff888025fcbc00 R08: ffffffff8fac246f R09: 1ffffffff1f5848d
R10: dffffc0000000000 R11: fffffbfff1f5848e R12: dffffc0000000000
R13: ffffc9000490faf8 R14: ffffffff8b872520 R15: ffff888025fcce78
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: 0033:0x7f297047cea9
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:00007f296ffbd178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f29705b41f8 RCX: 00007f297047cea9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f29705b41f8
RBP: 00007f29705b41f0 R08: 00007f296ffbd6c0 R09: 00007f296ffbd6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f29705b41fc
R13: 000000000000006e R14: 00007ffc7811b4d0 R15: 00007ffc7811b5b8