rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P31061/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=106661, q=120 ncpus=2)
task:syz-executor.1 state:R running task stack:26296 pid:31061 tgid:31054 ppid:5088 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6727
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7047
irqentry_exit+0x36/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:arch_stack_walk+0xb6/0x170 arch/x86/kernel/stacktrace.c:26
Code: 00 00 48 89 8d 68 ff ff ff e8 c6 fe 55 00 48 89 da 4c 89 fe 4c 89 e7 48 8b 8d 68 ff ff ff e8 61 53 08 00 eb 49 e8 aa fe 55 00 <4c> 89 e7 e8 32 29 08 00 31 ff 48 89 c3 48 89 c6 e8 25 fa 55 00 48
RSP: 0018:ffffc90016b2f1d8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81321569
RDX: ffff888083270000 RSI: ffffffff81321516 RDI: 0000000000000005
RBP: ffffc90016b2f270 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffffffff1a36fa8 R12: ffffc90016b2f1e0
R13: ffffffff817562b0 R14: ffffc90016b2f2a0 R15: ffff888083270000
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x15e/0x1f0 mm/page_owner.c:130
__reset_page_owner+0x51/0x2e0 mm/page_owner.c:151
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2383
free_unref_page_list+0xe6/0xb50 mm/page_alloc.c:2569
release_pages+0x32a/0x14f0 mm/swap.c:1042
tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:98
zap_pte_range mm/memory.c:1553 [inline]
zap_pmd_range mm/memory.c:1592 [inline]
zap_pud_range mm/memory.c:1621 [inline]
zap_p4d_range mm/memory.c:1642 [inline]
unmap_page_range+0x1ad7/0x2b60 mm/memory.c:1663
unmap_single_vma+0x194/0x2b0 mm/memory.c:1709
unmap_vmas+0x22f/0x490 mm/memory.c:1753
exit_mmap+0x1c1/0xb60 mm/mmap.c:3277
__mmput+0x12a/0x4d0 kernel/fork.c:1343
mmput+0x62/0x70 kernel/fork.c:1365
exit_mm kernel/exit.c:569 [inline]
do_exit+0x999/0x2ac0 kernel/exit.c:858
do_group_exit+0xd3/0x2a0 kernel/exit.c:1020
get_signal+0x238c/0x2760 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7fb1f4c7cce9
RSP: 002b:00007fb1f59580c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000136
RAX: 00000000007ffb80 RBX: 00007fb1f4d9c050 RCX: 00007fb1f4c7cce9
RDX: 0000000000000002 RSI: 0000000020008400 RDI: 0000000000000f60
RBP: 00007fb1f4cc947a R08: 0000000000000286 R09: 0000000000000000
R10: 0000000020008640 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb1f4d9c050 R15: 00007fff504d7608
rcu: rcu_preempt kthread starved for 10543 jiffies! g106661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:28536 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6817
schedule_timeout+0x136/0x290 kernel/time/timer.c:2183
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1830
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31095 Comm: syz-executor.4 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x60 kernel/kcov.c:203
Code: ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 15 f4 ae 7b 7e 65 8b 05 f5 ae 7b 7e a9 00 01 ff 00 <48> 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc90017687780 EFLAGS: 00000046
RAX: 0000000080000002 RBX: ffffc90017687808 RCX: ffffffff813a4711
RDX: ffff88803f020000 RSI: 000000000000df3e RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000004 R09: 000000000000df3e
R10: 000000000009c000 R11: 0000000000000080 R12: ffffffff81df3e52
R13: 000000000000df3e R14: 000000000009c000 R15: ffffc9001768783d
FS: 00007f9f011376c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f01136f00 CR3: 000000008c395000 CR4: 00000000003506f0
DR0: 000000000000d8dd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:217 [inline]
unwind_next_frame+0x23f/0x2390 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:47
kasan_set_track+0x24/0x30 mm/kasan/common.c:61
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582
poison_slab_object+0x119/0x190 mm/kasan/common.c:233
__kasan_slab_free+0x14/0x30 mm/kasan/common.c:241
kasan_slab_free include/linux/kasan.h:183 [inline]
slab_free_hook mm/slub.c:2121 [inline]
slab_free mm/slub.c:4303 [inline]
kmem_cache_free+0x12e/0x360 mm/slub.c:4367
__sigqueue_free kernel/signal.c:450 [inline]
__sigqueue_free kernel/signal.c:442 [inline]
collect_signal+0x315/0x630 kernel/signal.c:593
__dequeue_signal kernel/signal.c:615 [inline]
dequeue_signal+0x22a/0x650 kernel/signal.c:635
get_signal+0x5ce/0x2760 kernel/signal.c:2773
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f9f004277d0
Code: 5b 5d c3 48 8d 3d 3f 0a 0a 00 e8 db fa ff ff 48 8d 3d 41 0a 0a 00 e8 cf fa ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <53> 89 fb 48 83 ec 10 64 8b 04 25 ac ff ff ff 85 c0 74 2a 89 fe 31
RSP: 002b:00007f9f01136b38 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f9f004d895d
RDX: 00007f9f01136b40 RSI: 00007f9f01136c70 RDI: 000000000000000b
RBP: 00007f9f004c947a R08: 0000000000000423 R09: 0000000000000001
R10: 00007ffe4ed8b080 R11: 0000000001244eb8 R12: 0000000000000000
R13: 000000000000006e R14: 00007f9f0059c1f0 R15: 00007ffe4ece6a58
vkms_vblank_simulate: vblank timer overrun