rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6347/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=31137, q=673 ncpus=2)
task:syz-executor state:R running task stack:20288 pid:6347 tgid:6347 ppid:6346 flags:0x00004002
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:get_stack_info+0x50/0x180 arch/x86/kernel/dumpstack_64.c:208
Code: ca 62 00 48 85 db 0f 84 86 00 00 00 48 89 df 4c 89 ee 4c 89 fa e8 a0 4e 52 0a 84 c0 74 7b 4d 85 f6 0f 84 92 00 00 00 49 8b 1e <45> 8b 27 bf 40 00 00 00 44 89 e6 e8 a0 ce 62 00 49 83 fc 3f 0f 87
RSP: 0018:ffffc9000548f2a0 EFLAGS: 00000286
RAX: 000000000548f301 RBX: 0000000000000000 RCX: ffffc90005488000
RDX: ffffc9000548f340 RSI: ffffc90005490000 RDI: ffffc9000548f2d8
RBP: dffffc0000000000 R08: ffffc9000548f301 R09: ffffc9000548f340
R10: dffffc0000000000 R11: fffff52000a91e74 R12: ffffc9000548f360
R13: ffff888065d81e00 R14: ffffc9000548f360 R15: ffffc9000548f340
__unwind_start+0x481/0x7c0 arch/x86/kernel/unwind_orc.c:729
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1093 [inline]
free_unref_page+0xd22/0xea0 mm/page_alloc.c:2588
discard_slab mm/slub.c:2527 [inline]
__put_partials+0xeb/0x130 mm/slub.c:2995
put_cpu_partial+0x17c/0x250 mm/slub.c:3070
__slab_free+0x2ea/0x3d0 mm/slub.c:4308
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__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]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4009
alloc_empty_file+0x9e/0x1d0 fs/file_table.c:202
path_openat+0x105/0x35f0 fs/namei.c:3799
do_filp_open+0x235/0x490 fs/namei.c:3840
do_sys_openat2+0x13e/0x1d0 fs/open.c:1413
do_sys_open fs/open.c:1428 [inline]
__do_sys_openat fs/open.c:1444 [inline]
__se_sys_openat fs/open.c:1439 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1439
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: 0033:0x7f43663754d1
RSP: 002b:00007ffc1eceab10 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f43663e3515 RCX: 00007f43663754d1
RDX: 0000000000090800 RSI: 00007ffc1ecebd00 RDI: 00000000ffffff9c
RBP: 00007ffc1ecebccc R08: 0000000000000000 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffc1ecebd00
R13: 00007f43663e3515 R14: 000000000003fa51 R15: 000000000000001c
rcu: rcu_preempt kthread starved for 547 jiffies! g31137 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:24912 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:
CPU: 0 PID: 4484 Comm: kworker/u9:1 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_cmd_sync_work
RIP: 0010:srso_alias_safe_ret+0x0/0x7 arch/x86/lib/retpoline.S:171
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <48> 8d 64 24 08 c3 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90000007378 EFLAGS: 00000256
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff8173d0e8
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888063d096b8
RBP: ffffc90000007750 R08: ffff888063d096bb R09: 1ffff1100c7a12d7
R10: dffffc0000000000 R11: ffffed100c7a12d8 R12: 0000000000000000
R13: ffffc900000078b0 R14: ffffffff8afc5fff R15: ffff888063d096b8
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3171fffc CR3: 000000000e132000 CR4: 0000000000350ef0
Call Trace:
srso_alias_return_thunk+0x5/0xfbef5 arch/x86/lib/retpoline.S:181
instrument_atomic_read include/linux/instrumented.h:68 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]
debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]
do_raw_spin_unlock+0x58/0x8b0 kernel/locking/spinlock_debug.c:141
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:166 [inline]
_raw_spin_unlock_bh+0x23/0x40 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
ieee80211_rx_handlers+0xb7af/0xb820 net/mac80211/rx.c:4213
ieee80211_invoke_rx_handlers net/mac80211/rx.c:4235 [inline]
ieee80211_prepare_and_rx_handle+0x31ab/0x6360 net/mac80211/rx.c:5083
__ieee80211_rx_handle_packet net/mac80211/rx.c:5324 [inline]
ieee80211_rx_list+0x2cde/0x3780 net/mac80211/rx.c:5459
ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5482
ieee80211_rx include/net/mac80211.h:5093 [inline]
ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:438
tasklet_action_common+0x323/0x4d0 kernel/softirq.c:785
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_save_fl arch/x86/include/asm/irqflags.h:32 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:103 [inline]
RIP: 0010:__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
RIP: 0010:_raw_spin_lock_irqsave+0x8d/0x120 kernel/locking/spinlock.c:162
Code: f3 4b 89 44 3d 00 4c 89 e3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 e7 e8 f1 1b 6b f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 <42> 80 3c 3b 00 74 08 4c 89 e7 e8 e4 1a 6b f6 4c 8b 64 24 20 fa 41
RSP: 0018:ffffc9000d38f3a0 EFLAGS: 00000246
RAX: f3f3f300f1f1f1f1 RBX: 1ffff92001a71e78 RCX: 61c8864680b583eb
RDX: 0000000000000002 RSI: ffffffff8bcabb40 RDI: ffffffff94a463a0
RBP: ffffc9000d38f430 R08: ffffffff92fa75af R09: 1ffffffff25f4eb5
R10: dffffc0000000000 R11: fffffbfff25f4eb6 R12: ffffc9000d38f3c0
R13: 1ffff92001a71e74 R14: ffffffff94a463a0 R15: dffffc0000000000
__debug_check_no_obj_freed lib/debugobjects.c:978 [inline]
debug_check_no_obj_freed+0x234/0x580 lib/debugobjects.c:1019
free_pages_prepare mm/page_alloc.c:1100 [inline]
free_unref_page+0x38a/0xea0 mm/page_alloc.c:2588
__slab_free+0x31b/0x3d0 mm/slub.c:4349
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__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]
kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4045
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:656
alloc_skb include/linux/skbuff.h:1308 [inline]
mgmt_alloc_skb net/bluetooth/mgmt_util.c:64 [inline]
mgmt_send_event+0x46/0x1a0 net/bluetooth/mgmt_util.c:116
mgmt_event net/bluetooth/mgmt.c:340 [inline]
mgmt_connect_failed+0x186/0x210 net/bluetooth/mgmt.c:9752
hci_conn_failed+0xfa/0x340 net/bluetooth/hci_conn.c:1254
hci_abort_conn_sync+0x583/0xde0 net/bluetooth/hci_sync.c:5463
hci_cmd_sync_work+0x22d/0x400 net/bluetooth/hci_sync.c:323
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