rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5298/1:b..l P5238/1:b..l P12/1:b..l P5227/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=9133, q=585 ncpus=2)
task:udevd state:R running task stack:26192 pid:5227 tgid:5227 ppid:4676 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5727
Code: c1 05 1a ca 98 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900035afaf0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920006b5f60 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cda40 RDI: ffffffff8bb0f980
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2d244e0
R10: ffffffff96922707 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddb9fe0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
mntput_no_expire+0xa1/0xaf0 fs/namespace.c:1399
mntput+0x6b/0x90 fs/namespace.c:1469
vfs_statx+0x14f/0x1e0 fs/stat.c:316
vfs_fstatat+0x9f/0x160 fs/stat.c:341
__do_sys_newfstatat+0xa2/0x130 fs/stat.c:505
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f683f9165f4
RSP: 002b:00007fff636ab3b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055e084326830 RCX: 00007f683f9165f4
RDX: 00007fff636ab3c8 RSI: 00007fff636ab458 RDI: 00000000ffffff9c
RBP: 000055e04eabb7b4 R08: 000055e04eabb7b4 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000202 R12: 0000000000000000
R13: 000055e084326920 R14: 00007fff636ab458 R15: 000055e084335ef0
task:kworker/u8:1 state:R running task stack:23184 pid:12 tgid:12 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:121 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5735 [inline]
RIP: 0010:lock_acquire+0x138/0x560 kernel/locking/lockdep.c:5724
Code: 0f 85 1d 01 00 00 65 48 8b 15 44 1a 9a 7e 48 8d ba dc 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 b3 03 00 00 8b
RSP: 0018:ffffc90000117aa0 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: 1ffff92000022f56 RCX: 0000000000000000
RDX: ffff88801d2c5a00 RSI: ffffffff8bb0f900 RDI: ffff88801d2c64dc
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff202886b
R10: ffffffff9014435f R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddb9fe0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x16a/0x1060 net/batman-adv/network-coding.c:719
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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:26192 pid:5238 tgid:5238 ppid:4676 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline]
RIP: 0010:set_root+0x189/0x610 fs/namei.c:954
Code: 6a ff 48 8b 75 08 48 89 df e8 33 47 6a ff 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 c1 59 8c ff 48 85 db 58 0f 85 b2 03 00 00 42 57 8c ff 48 8b 45 c0 0f b6 00 41 38 c6 7c 08 84 c0 0f 85 ce
RSP: 0018:ffffc9000366f908 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ff6b8a
RDX: ffff8880329cbc00 RSI: ffffffff81ff6b99 RDI: 0000000000000007
RBP: ffffc9000366f990 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000040
R13: 0000000000000000 R14: 0000000000000003 R15: ffff88803266dc00
nd_jump_root+0x3d5/0x580 fs/namei.c:975
path_init+0x1098/0x1a90 fs/namei.c:2468
path_lookupat+0x33/0x770 fs/namei.c:2556
filename_lookup+0x1e5/0x5b0 fs/namei.c:2595
vfs_statx+0x11e/0x1e0 fs/stat.c:312
vfs_fstatat+0x9f/0x160 fs/stat.c:341
__do_sys_newfstatat+0xa2/0x130 fs/stat.c:505
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f683f9165f4
RSP: 002b:00007fff636b14c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007fff636b1568 RCX: 00007f683f9165f4
RDX: 00007fff636b14d8 RSI: 00007fff636b1e88 RDI: 00000000ffffff9c
RBP: 00007fff636b1e88 R08: 0000000000000000 R09: 00007fff636b1748
R10: 0000000000000100 R11: 0000000000000206 R12: 0000000000000005
R13: 000055e08431d090 R14: 000055e084330df0 R15: 00007fff636b1e99
task:udevd state:R running task stack:27408 pid:5298 tgid:5298 ppid:4676 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:write_comp_data+0x6/0x90 kernel/kcov.c:239
Code: d0 73 07 48 89 01 48 89 34 c1 c3 cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 <49> 89 f1 65 48 8b 15 1f 1a 78 7e 65 8b 05 20 1a 78 7e a9 00 01 ff
RSP: 0018:ffffc900039bf848 EFLAGS: 00000246
RAX: 0000000080000001 RBX: 0000000080000000 RCX: ffffffff813cf0ff
RDX: 0000000080000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc900039bfd18 R08: 0000000000000005 R09: ffffc900039bfcc0
R10: 0000000080000000 R11: 0000000000000000 R12: ffffc900039b8000
R13: ffffc900039c0000 R14: ffffc900039bfd20 R15: ffffc900039bfcc0
unwind_next_frame+0x11ff/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2612
__put_partials+0x14c/0x170 mm/slub.c:3051
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
getname_flags.part.0+0x4c/0x550 fs/namei.c:139
getname_flags+0x93/0xf0 include/linux/audit.h:322
vfs_fstatat+0x86/0x160 fs/stat.c:340
__do_sys_newfstatat+0xa2/0x130 fs/stat.c:505
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f683f9165f4
RSP: 002b:00007fff636b14c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007fff636b1568 RCX: 00007f683f9165f4
RDX: 00007fff636b14d8 RSI: 00007fff636b1e88 RDI: 00000000ffffff9c
RBP: 00007fff636b1e88 R08: 0000000000000000 R09: 00007fff636b1748
R10: 0000000000000100 R11: 0000000000000206 R12: 0000000000000005
R13: 000055e084324560 R14: 000055e08431d840 R15: 00007fff636b1e99
rcu: rcu_preempt kthread starved for 2056 jiffies! g9133 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:28176 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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 UID: 0 PID: 5255 Comm: kworker/0:3 Not tainted 6.11.0-rc6-syzkaller-00019-g67784a74e258 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x425/0xc90 kernel/locking/qspinlock.c:508
Code: 00 01 00 00 66 89 8c 24 80 00 00 00 41 0f b6 07 44 38 e0 7f 08 84 c0 0f 85 0b 07 00 00 0f b6 03 84 c0 0f 84 b0 00 00 00 f3 90 <41> 83 ed 01 75 cf 48 b8 00 00 00 00 00 fc ff df 48 8b 74 24 20 48
RSP: 0018:ffffc90000007970 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8ef77ea0 RCX: 0000000000000100
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8ef77ea2
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffffbfff1deefd4
R10: ffffffff8ef77ea3 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000007a65 R14: ffff8880b883fc80 R15: fffffbfff1deefd4
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e084315d48 CR3: 0000000079186000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x210/0x2c0 kernel/locking/spinlock_debug.c:116
spin_lock include/linux/spinlock.h:351 [inline]
mac80211_hwsim_tx_frame_no_nl.isra.0+0x738/0x12f0 drivers/net/wireless/virtual/mac80211_hwsim.c:1817
mac80211_hwsim_tx_frame+0x1eb/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:2215
__mac80211_hwsim_beacon_tx drivers/net/wireless/virtual/mac80211_hwsim.c:2232 [inline]
mac80211_hwsim_beacon_tx+0x592/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
__iterate_interfaces+0x2d0/0x5d0 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808
mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1770
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 f6 1f 50 f6 48 89 df e8 0e 9d 50 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 35 10 42 f6 65 8b 05 b6 4a ea 74 85 c0 74 16 5b
RSP: 0018:ffffc9000377f808 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff88801ac40600 RCX: 1ffffffff2d26b9f
RDX: 0000000000000000 RSI: ffffffff8b4cd740 RDI: ffffffff8bb0f980
RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff2d244e6
R10: ffffffff96922737 R11: 0000000000000000 R12: ffff888055c4a000
R13: 0000000000000000 R14: ffffc9000377f858 R15: ffff888055c49f00
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_noprof+0x199/0x400 mm/slub.c:4170
kmalloc_noprof include/linux/slab.h:685 [inline]
usb_alloc_urb+0x69/0xa0 drivers/usb/core/urb.c:75
usb_internal_control_msg drivers/usb/core/message.c:96 [inline]
usb_control_msg+0x1d4/0x4b0 drivers/usb/core/message.c:154
get_port_status drivers/usb/core/hub.c:604 [inline]
hub_ext_port_status+0x14e/0x670 drivers/usb/core/hub.c:621
usb_hub_port_status drivers/usb/core/hub.c:671 [inline]
port_event drivers/usb/core/hub.c:5714 [inline]
hub_event+0x6e0/0x4e10 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244