rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4540/1:b..l P5152/1:b..l P7516/3:b..l
rcu: (detected by 1, t=10503 jiffies, g=26561, q=419 ncpus=2)
task:syz.5.472 state:R running task stack:24672 pid:7516 tgid:7516 ppid:5093 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 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:3655
do_fault_around mm/memory.c:4879 [inline]
do_read_fault mm/memory.c:4912 [inline]
do_fault mm/memory.c:5051 [inline]
do_pte_missing mm/memory.c:3897 [inline]
handle_pte_fault+0x3b9d/0x7090 mm/memory.c:5381
__handle_mm_fault mm/memory.c:5524 [inline]
handle_mm_fault+0x10df/0x1ba0 mm/memory.c:5689
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fad02653945
RSP: 002b:00007ffcd0c630a0 EFLAGS: 00010246
RAX: 000000110c25c000 RBX: ffffffff820bcec5 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000002f3b RDI: 00000000820bcec9
RBP: 00007fad03435720 R08: 0000000000000001 R09: 00007fad01e01000
R10: 0000000000000008 R11: 00000000820bcec5 R12: ffffffff820bc7af
R13: 00007fad02903ff8 R14: 0000000000000000 R15: 00007fad028f0000
task:kworker/1:4 state:R running task stack:23064 pid:5152 tgid:5152 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
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_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:gc_worker+0x3c2/0x1530 net/netfilter/nf_conntrack_core.c:1494
Code: 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 c2 c9 5a f8 48 8b 1b 48 89 de 48 83 e6 01 31 ff e8 a1 08 f5 f7 48 89 d8 <48> 83 e0 01 0f 85 40 09 00 00 48 8d 7b 37 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffffc9000304fa60 EFLAGS: 00000293
RAX: 0000000000030207 RBX: 0000000000030207 RCX: ffff8880274a8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000304fbb0 R08: ffffffff89a1245f R09: 1ffffffff25f5ac2
R10: dffffc0000000000 R11: fffffbfff25f5ac3 R12: 0000000000040000
R13: dffffc0000000000 R14: ffff88801e400000 R15: 0000000000018103
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
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
task:udevd state:R running task stack:21952 pid:4540 tgid:4540 ppid:1 flags:0x00000002
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 0a 84 89 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:ffffc900094a7700 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001294eec RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c202900
RBP: ffffc900094a7848 R08: ffffffff92fad587 R09: 1ffffffff25f5ab0
R10: dffffc0000000000 R11: fffffbfff25f5ab1 R12: 1ffff92001294ee8
R13: dffffc0000000000 R14: ffffc900094a7760 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
dput+0x54/0x2b0 fs/dcache.c:842
step_into+0x355/0x1080 fs/namei.c:1857
walk_component fs/namei.c:2010 [inline]
link_path_walk+0x748/0xea0 fs/namei.c:2331
path_lookupat+0xa9/0x450 fs/namei.c:2492
filename_lookup+0x256/0x610 fs/namei.c:2522
user_path_at_empty+0x42/0x60 fs/namei.c:2929
do_readlinkat+0x118/0x3b0 fs/stat.c:499
__do_sys_readlink fs/stat.c:532 [inline]
__se_sys_readlink fs/stat.c:529 [inline]
__x64_sys_readlink+0x7f/0x90 fs/stat.c:529
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: 0033:0x7f38c498ad47
RSP: 002b:00007ffdfdbdfec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007ffdfdbdfed8 RCX: 00007f38c498ad47
RDX: 0000000000000400 RSI: 00007ffdfdbdfed8 RDI: 00007ffdfdbe03b8
RBP: 0000000000000400 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007ffdfdbe03b8
R13: 00007ffdfdbe0328 R14: 000056273a1b7910 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 10597 jiffies! g26561 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:25792 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc7-syzkaller-00256-gd0d0cd380055 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
RIP: 0010:kvm_wait+0x2ac/0x2c0 arch/x86/kernel/kvm.c:1060
Code: a0 48 89 df e8 75 a5 bb 00 eb 96 e8 9e 0d 46 0a f3 0f 1e fa e8 05 e0 55 00 f4 e9 04 fe ff ff f3 0f 1e fa e8 f6 df 55 00 fb f4 f4 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90
RSP: 0018:ffffc90000007620 EFLAGS: 00000246
RAX: ffffffff8140482a RBX: ffffffff8eebd840 RCX: ffffffff8e094680
RDX: 0000000080000102 RSI: ffffffff8bcabb40 RDI: ffffffff8c202900
RBP: ffffc900000076f0 R08: ffffffff92fad5ef R09: 1ffffffff25f5abd
R10: dffffc0000000000 R11: fffffbfff25f5abe R12: 1ffff92000000ec8
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c260f5b CR3: 000000006608c000 CR4: 0000000000350ef0
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:596 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
__pv_queued_spin_lock_slowpath+0x8d0/0xdc0 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
spin_lock include/linux/spinlock.h:351 [inline]
mac80211_hwsim_tx_frame_no_nl+0x97f/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1808
mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2206
mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2306
__iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2336
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1770
handle_softirqs+0x2c6/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 d4 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 35 2a a3 00 f3 0f 1e fa fb f4 e9 d4 b3 29 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246
RAX: ffffffff8e094680 RBX: ffff8880186ae864 RCX: 0000000000102929
RDX: 0000000000000001 RSI: ffff8880186ae800 RDI: ffff8880186ae864
RBP: 000000000003a578 R08: ffff8880b9437ccb R09: 1ffff11017286f99
R10: dffffc0000000000 R11: ffffffff8b8688e0 R12: ffff88801aba5800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8ead1560
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
rest_init+0x2dc/0x300 init/main.c:747
start_kernel+0x47a/0x500 init/main.c:1103
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147