rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P21937/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=159937, q=1123 ncpus=2)
task:syz-executor.5 state:R running task stack:23136 pid:21937 tgid:21936 ppid:19907 flags:0x00004006
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:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xe5/0x550 kernel/locking/lockdep.c:5725
Code: 48 89 d8 48 c1 e8 06 48 8d 3c c5 68 47 ad 8f be 08 00 00 00 e8 9c 83 89 00 48 0f a3 1d 0c e2 3a 0e 73 16 e8 3d f1 09 00 84 c0 <75> 0d 80 3d 8d 52 25 0e 00 0f 84 f9 02 00 00 48 c7 c0 ac 79 ad 8f
RSP: 0018:ffffc9000a1f6dc0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81726554
RDX: 0000000000000000 RSI: ffffffff8c1ff320 RDI: ffffffff8c1ff2e0
RBP: ffffc9000a1f6f08 R08: ffffffff8fad476f R09: 1ffffffff1f5a8ed
R10: dffffc0000000000 R11: fffffbfff1f5a8ee R12: 1ffff9200143edc0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc9000a1f7060
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]
do_anonymous_page mm/memory.c:4437 [inline]
do_pte_missing mm/memory.c:3901 [inline]
handle_pte_fault+0x265a/0x7130 mm/memory.c:5380
__handle_mm_fault mm/memory.c:5523 [inline]
handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5688
faultin_page mm/gup.c:1290 [inline]
__get_user_pages+0x6ef/0x1590 mm/gup.c:1589
__get_user_pages_locked mm/gup.c:1857 [inline]
__gup_longterm_locked+0x1ff6/0x2a80 mm/gup.c:2556
pin_user_pages_remote+0x132/0x1f0 mm/gup.c:3616
process_vm_rw_single_vec mm/process_vm_access.c:106 [inline]
process_vm_rw_core mm/process_vm_access.c:216 [inline]
process_vm_rw+0x716/0xcf0 mm/process_vm_access.c:284
__do_sys_process_vm_readv mm/process_vm_access.c:296 [inline]
__se_sys_process_vm_readv mm/process_vm_access.c:292 [inline]
__x64_sys_process_vm_readv+0xe0/0x100 mm/process_vm_access.c:292
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: 0033:0x7fe82327cf69
RSP: 002b:00007fe823f820c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: ffffffffffffffda RBX: 00007fe8233b3f80 RCX: 00007fe82327cf69
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 0000000000000125
RBP: 00007fe8232da6fe R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe8233b3f80 R15: 00007ffdd3b63638
rcu: rcu_preempt kthread starved for 10548 jiffies! g159937 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:25968 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22001 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00097-g2df0193e62cf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1865/0x29d0 kernel/smp.c:855
Code: 89 e6 83 e6 01 31 ff e8 99 09 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 44 05 0c 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 28 05 0c 00 eb e4 44
RSP: 0018:ffffc9000a3972a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff11017288c11 RCX: 0000000000040000
RDX: ffffc90009c91000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000a397480 R08: ffffffff818a2127 R09: 1ffffffff25f52b6
R10: dffffc0000000000 R11: fffffbfff25f52b7 R12: dffffc0000000000
R13: ffff8880b9446088 R14: ffff8880b953f900 R15: 0000000000000000
FS: 00007f1bc75ff6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d221000 CR3: 0000000067426000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:941 [inline]
flush_tlb_mm_range+0x329/0x5c0 arch/x86/mm/tlb.c:1027
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:465 [inline]
tlb_flush_mmu+0x1aa/0x680 mm/mmu_gather.c:372
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
unmap_region+0x2df/0x350 mm/mmap.c:2370
do_vmi_align_munmap+0x1122/0x18c0 mm/mmap.c:2683
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
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: 0033:0x7f1bc7a7cf69
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:00007f1bc75ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f1bc7bb3f80 RCX: 00007f1bc7a7cf69
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f1bc7ada6fe R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f1bc7bb3f80 R15: 00007ffe3b87a6a8