rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5359/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=16345, q=812 ncpus=2)
task:udevd state:R running task stack:24344 pid:5359 tgid:5359 ppid:4541 flags:0x00000002
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_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock+0x18c/0x1e0 kernel/sched/wait.c:108
sock_def_readable+0x20f/0x5b0 net/core/sock.c:3353
unix_dgram_sendmsg+0x1490/0x1f80 net/unix/af_unix.c:2116
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa74/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
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: 0033:0x7fcd1d316bf2
RSP: 002b:00007ffcc46d2328 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcd1d316bf2
RDX: 0000000000000000 RSI: 00007ffcc46d237f RDI: 000000000000000a
RBP: 00007ffcc46d237f R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a
R13: 00007fcd1d69eae0 R14: 0000000000000000 R15: 000055c76fd01910
rcu: rcu_preempt kthread starved for 232 jiffies! g16345 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:27056 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: 5108 Comm: kworker/u9:9 Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: hci4 hci_conn_timeout
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0xba/0x120 kernel/kcov.c:341
Code: 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 f4 a6 6d 7e a9 00 01 ff 00 74 11 a9 00 01 00 00 74 de 41 83 bb 1c 16 00 00 00 <74> d4 41 8b 83 f8 15 00 00 83 f8 03 75 c8 49 8b 8b 00 16 00 00 45
RSP: 0018:ffffc90000006840 EFLAGS: 00000002
RAX: 0000000080010102 RBX: 0000000000000002 RCX: 0000000000040000
RDX: 0000000000000000 RSI: ffffffff8e1a1360 RDI: 0000000000000002
RBP: ffffffff908e5336 R08: 0000000000000003 R09: ffffffff8140f6b2
R10: 0000000000000002 R11: ffff888062f3bc00 R12: ffffffff8ffc665c
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff908e5332
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6970a5b291 CR3: 00000000200e2000 CR4: 0000000000350ef0
Call Trace:
unwind_next_frame+0x6c2/0x2a00 arch/x86/kernel/unwind_orc.c:505
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
kmalloc_trace_noprof+0x19c/0x2c0 mm/slub.c:4154
kmalloc_noprof include/linux/slab.h:660 [inline]
dummy_urb_enqueue+0x7d/0x760 drivers/usb/gadget/udc/dummy_hcd.c:1271
usb_hcd_submit_urb+0x36e/0x1e80 drivers/usb/core/hcd.c:1533
ath9k_hif_usb_reg_in_cb+0x472/0x650 drivers/net/wireless/ath/ath9k/hif_usb.c:792
__usb_hcd_giveback_urb+0x42e/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x784/0xdc0 kernel/locking/qspinlock.c:508
Code: b6 04 2b 84 c0 75 6c 66 c7 84 24 b0 00 00 00 00 01 48 8b 44 24 40 42 0f b6 04 28 84 c0 75 77 41 80 3e 00 74 0c f3 90 41 ff c4 <75> d2 e9 a0 00 00 00 4c 89 f7 be 02 00 00 00 e8 e8 f2 6a f6 48 8d
RSP: 0018:ffffc90000007700 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 1ffff92000000ef6 RCX: ffffc90000007701
RDX: 0000000080000101 RSI: ffffffff8bcabb40 RDI: ffffffff8c1fe9c0
RBP: ffffc90000007838 R08: ffffffff92fa75ef R09: 1ffffffff25f4ebd
R10: dffffc0000000000 R11: fffffbfff25f4ebe R12: 00000000ffffe7b6
R13: dffffc0000000000 R14: ffffffff8eeb9f40 R15: ffffc900000077c0
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 2a 73 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:ffffc90002edf940 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920005dbf34 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1fe9c0
RBP: ffffc90002edfa88 R08: ffffffff92fa7657 R09: 1ffffffff25f4eca
R10: dffffc0000000000 R11: fffffbfff25f4ecb R12: 1ffff920005dbf30
R13: dffffc0000000000 R14: ffffc90002edf9a0 R15: 0000000000000246
srcu_lock_acquire include/linux/srcu.h:116 [inline]
srcu_read_lock+0x43/0x50 include/linux/srcu.h:215
kasan_quarantine_reduce+0x51/0x170 mm/kasan/quarantine.c:259
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3940 [inline]
slab_alloc_node mm/slub.c:4002 [inline]
kmalloc_trace_noprof+0x132/0x2c0 mm/slub.c:4149
kmalloc_noprof include/linux/slab.h:660 [inline]
hci_cmd_sync_submit+0xcb/0x2f0 net/bluetooth/hci_sync.c:660
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
sched: RT throttling activated