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INFO: rcu detected stall in kvm_dev_ioctl (5)

Status: auto-obsoleted due to no activity on 2025/05/14 19:07
Subsystems: mm
[Documentation on labels]
First crash: 419d, last: 129d
▶ ▼ Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: rcu detected stall in kvm_dev_ioctl 1 364d 364d 0/3 auto-obsoleted due to no activity on 2024/10/01 03:25
upstream INFO: rcu detected stall in kvm_dev_ioctl (2) kernel 1 1992d 1992d 0/29 closed as invalid on 2020/01/08 05:23
upstream INFO: rcu detected stall in kvm_dev_ioctl (4) mm 1 938d 938d 0/29 auto-obsoleted due to no activity on 2023/04/10 15:34
upstream INFO: rcu detected stall in kvm_dev_ioctl (3) kernel 3 1992d 1992d 0/29 closed as invalid on 2020/01/09 08:13
upstream INFO: rcu detected stall in kvm_dev_ioctl kernel 4 2028d 2028d 0/29 closed as invalid on 2019/12/04 14:04
linux-4.19 BUG: soft lockup in kvm_dev_ioctl 1 1503d 1503d 0/1 auto-closed as invalid on 2021/09/08 20:48
android-5-15 BUG: soft lockup in kvm_dev_ioctl 1 400d 400d 0/2 auto-obsoleted due to no activity on 2024/08/16 05:28

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=f49c/1/0x4000000000000000 softirq=25956/25957 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8113/1:b..l P8174/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=23809, q=673 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8171 Comm: syz.2.637 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__kasan_check_read+0xa/0x20 mm/kasan/shadow.c:31
Code: db eb d0 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 89 f6 48 8b 0c 24 <31> d2 e9 af e6 ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RSP: 0018:ffffc90000007738 EFLAGS: 00000003
RAX: 0000000000000001 RBX: 0000000000000070 RCX: ffffffff819b628e
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff942c6848
RBP: ffffc90000007a40 R08: ffffffff942c684f R09: 1ffffffff2858d09
R10: dffffc0000000000 R11: fffffbfff2858d0a R12: dffffc0000000000
R13: ffff88807997c738 R14: 35a08aec8a9222e9 R15: 0000000000000001
FS:  00007f87751846c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8775162f98 CR3: 0000000021f12000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:230 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3818 [inline]
 validate_chain+0x11e/0x5920 kernel/locking/lockdep.c:3874
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1805 [inline]
 __hrtimer_run_queues+0x670/0xd30 kernel/time/hrtimer.c:1865
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1927
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5855
Code: 2b 00 74 08 4c 89 f7 e8 1a b6 88 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:ffffc90003f8f0e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920007f1e28 RCX: ffff88807997c6e8
RDX: dffffc0000000000 RSI: ffffffff8c0ab8e0 RDI: ffffffff8c5fb900
RBP: ffffc90003f8f230 R08: ffffffff942c6847 R09: 1ffffffff2858d08
R10: dffffc0000000000 R11: fffffbfff2858d09 R12: 1ffff920007f1e24
R13: dffffc0000000000 R14: ffffc90003f8f140 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:772
 kernel_text_address+0xa7/0xe0 kernel/extable.c:125
 __kernel_text_address+0xd/0x40 kernel/extable.c:79
 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfb/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x92/0x800 mm/page_owner.c:320
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551
 prep_new_page mm/page_alloc.c:1559 [inline]
 get_page_from_freelist+0x3651/0x37a0 mm/page_alloc.c:3477
 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739
 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2361
 vm_area_alloc_pages mm/vmalloc.c:3591 [inline]
 __vmalloc_area_node mm/vmalloc.c:3669 [inline]
 __vmalloc_node_range_noprof+0x9c6/0x1380 mm/vmalloc.c:3846
 __vmalloc_node_noprof mm/vmalloc.c:3911 [inline]
 __vmalloc_noprof+0x79/0x90 mm/vmalloc.c:3925
 kvm_arch_alloc_vm arch/x86/include/asm/kvm_host.h:1938 [inline]
 kvm_create_vm virt/kvm/kvm_main.c:1093 [inline]
 kvm_dev_ioctl_create_vm virt/kvm/kvm_main.c:5391 [inline]
 kvm_dev_ioctl+0x138/0x22d0 virt/kvm/kvm_main.c:5433
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 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: 0033:0x7f877438cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8775184038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f87745a5fa0 RCX: 00007f877438cde9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
RBP: 00007f877440e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f87745a5fa0 R15: 00007fffc65e5bd8
 </TASK>
task:syz.4.636       state:R  running task     stack:23408 pid:8174  tgid:8173  ppid:5818   task_flags:0x40054c flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6943
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6967
 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:1761 [inline]
 zap_pmd_range mm/memory.c:1823 [inline]
 zap_pud_range mm/memory.c:1852 [inline]
 zap_p4d_range mm/memory.c:1873 [inline]
 unmap_page_range+0x3d52/0x48d0 mm/memory.c:1894
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1984
 exit_mmap+0x283/0xd40 mm/mmap.c:1284
 __mmput+0x115/0x410 kernel/fork.c:1356
 exit_mm+0x220/0x310 kernel/exit.c:570
 do_exit+0x9ad/0x28e0 kernel/exit.c:925
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39fe78cde9
RSP: 002b:00007f39ff6b30e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f39fe9a5fa8 RCX: 00007f39fe78cde9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f39fe9a5fac
RBP: 00007f39fe9a5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f39fe9a5fac
R13: 0000000000000000 R14: 00007fff849cdac0 R15: 00007fff849cdba8
 </TASK>
task:syz.3.619       state:R  running task     stack:22608 pid:8113  tgid:8113  ppid:5834   task_flags:0x40064c flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7086
 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:constant_test_bit arch/x86/include/asm/bitops.h:206 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:238 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:folio_test_swapbacked include/linux/page-flags.h:537 [inline]
RIP: 0010:folio_test_swapcache include/linux/page-flags.h:584 [inline]
RIP: 0010:folio_index include/linux/pagemap.h:927 [inline]
RIP: 0010:folio_contains+0x76/0x2a0 include/linux/pagemap.h:970
Code: ff e8 9e 23 c7 ff 48 83 e3 01 0f 85 f4 01 00 00 4c 89 ef be 08 00 00 00 e8 f7 32 2b 00 4c 89 ed 48 c1 ed 03 42 80 7c 35 00 00 <74> 08 4c 89 ef e8 70 30 2b 00 49 8b 5d 00 41 be 00 00 02 00 be 00
RSP: 0018:ffffc9000473f098 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81f83099
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001aa4640
RBP: 1ffffd40003548c8 R08: ffffea0001aa4647 R09: 1ffffd40003548c8
R10: dffffc0000000000 R11: fffff940003548c9 R12: 0000000000000f05
R13: ffffea0001aa4640 R14: dffffc0000000000 R15: ffffea0001aa4648
 find_lock_entries+0x7f7/0xbb0 mm/filemap.c:2137
 shmem_undo_range+0x2d4/0x1820 mm/shmem.c:1094
 shmem_truncate_range mm/shmem.c:1224 [inline]
 shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1352
 evict+0x4e8/0x9a0 fs/inode.c:796
 __dentry_kill+0x20d/0x630 fs/dcache.c:643
 dput+0x19f/0x2b0 fs/dcache.c:885
 __fput+0x60b/0x9f0 fs/file_table.c:472
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2a/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x16b2/0x1750 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0x7e/0x250 kernel/entry/common.c:231
 exc_page_fault+0x590/0x8b0 arch/x86/mm/fault.c:1541
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0xfa03
RSP: 002b:00004000000002b8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f4f80ba6080 RCX: 00007f4f8098cde9
RDX: 0000400000000000 RSI: 00004000000002b0 RDI: 0000000000002000
RBP: 00007f4f80a0e2a0 R08: 00004000000002c0 R09: 00004000000002c0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4f80ba6080 R15: 00007ffd60911ba8
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g23809 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:25784 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 5834 Comm: syz-executor Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x1bc0/0x2d30 kernel/smp.c:885
Code: 64 24 68 75 07 e8 60 e4 0b 00 eb 41 f3 90 48 b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e <e8> 3b e4 0b 00 eb db 44 89 e9 80 e1 07 80 c1 03 38 c1 7c e2 4c 89
RSP: 0018:ffffc900040bf560 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff110170c8c75 RCX: ffff88802c345a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900040bf760 R08: ffffffff81b36ad0 R09: 1ffffffff2858d0e
R10: dffffc0000000000 R11: fffffbfff2858d0f R12: ffff8880b873f9c8
R13: ffff8880b86463a8 R14: ffff8880b873f9c0 R15: 0000000000000000
FS:  000055556963e500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000001000 CR3: 000000005fbaa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:966 [inline]
 flush_tlb_mm_range+0x42d/0x710 arch/x86/mm/tlb.c:1054
 dup_mmap kernel/fork.c:787 [inline]
 dup_mm kernel/fork.c:1700 [inline]
 copy_mm+0x18af/0x2160 kernel/fork.c:1752
 copy_process+0x1845/0x3d50 kernel/fork.c:2403
 kernel_clone+0x223/0x870 kernel/fork.c:2815
 __do_sys_clone kernel/fork.c:2958 [inline]
 __se_sys_clone kernel/fork.c:2942 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2942
 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: 0033:0x7f4f80983653
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd60911e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4f80983653
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055556963e7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000046de3 R15: 00007ffd60911fc0
 </TASK>
vkms_vblank_simulate: vblank timer overrun

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/13 19:04 upstream 4dc1d1bec898 2afad16e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in kvm_dev_ioctl
2025/01/11 11:59 upstream 77a903cd8e5a 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in kvm_dev_ioctl
2025/01/05 06:45 upstream ab75170520d4 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in kvm_dev_ioctl
2024/09/29 07:52 upstream 3efc57369a0c ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in kvm_dev_ioctl
2024/09/16 22:22 upstream adfc3ded5c33 49cf0773 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in kvm_dev_ioctl
2024/07/29 22:59 upstream dc1c8034e31b 5187fc86 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in kvm_dev_ioctl
2024/06/16 15:46 upstream 2ccbdf43d5e7 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in kvm_dev_ioctl
2024/04/29 06:37 upstream e67572cd2204 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in kvm_dev_ioctl
2024/12/01 18:59 linux-next f486c8aa16b8 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in kvm_dev_ioctl
* Struck through repros no longer work on HEAD.