rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2666 jiffies s: 1673 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2363 Comm: kworker/1:2 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:dummy_timer+0x307/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1839
Code: 0f 84 8e 1a 00 00 48 8b 04 24 4d 89 d4 48 8d 48 f8 48 89 c8 48 89 8c 24 e0 00 00 00 48 c1 e8 03 48 89 44 24 40 e8 c9 6a e3 fc <48> 8b 44 24 48 80 38 00 0f 85 f5 2d 00 00 48 8b 0c 24 48 8b 5c 24
RSP: 0018:ffffc900001a7ff8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff846f744c
RDX: ffff888113b99d00 RSI: ffffffff846f7287 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000007 R12: ffff8881118abe00
R13: ffff888109770568 R14: dffffc0000000000 R15: ffff8881097705d8
FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31626000 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:stack_access_ok+0x2/0x270 arch/x86/kernel/unwind_orc.c:389
Code: 30 ff ff ff e9 6f fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 41 55 41 54 55 48 89 f5 53 48 89 fb 4c 8d 63 08 48 83 ec 10
RSP: 0018:ffffc900001a8498 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffc900001a8528 RCX: 0000000000000001
RDX: 0000000000000008 RSI: ffffc900046ef418 RDI: ffffc900001a8528
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000004
R10: 0000000000000001 R11: ffffffff81a4a85e R12: ffffc900046ef418
R13: ffffc900046ef440 R14: 0000000000000001 R15: 0000000000000001
deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
unwind_next_frame+0x1b94/0x23a0 arch/x86/kernel/unwind_orc.c:648
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x6e/0x70 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc+0x131/0x2e0 mm/slub.c:3852
kmem_cache_zalloc include/linux/slab.h:739 [inline]
fill_pool+0x275/0x5d0 lib/debugobjects.c:168
debug_objects_fill_pool lib/debugobjects.c:615 [inline]
debug_object_assert_init+0x147/0x370 lib/debugobjects.c:893
debug_timer_assert_init kernel/time/timer.c:847 [inline]
debug_assert_init kernel/time/timer.c:892 [inline]
__mod_timer+0xae/0xdc0 kernel/time/timer.c:1073
call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793
expire_timers kernel/time/timer.c:1844 [inline]
__run_timers+0x74b/0xaf0 kernel/time/timer.c:2418
__run_timer_base kernel/time/timer.c:2429 [inline]
__run_timer_base kernel/time/timer.c:2422 [inline]
run_timer_base+0x111/0x190 kernel/time/timer.c:2438
run_timer_softirq+0x24/0x40 kernel/time/timer.c:2449
handle_softirqs+0x209/0x8e0 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+0xac/0x110 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:2985
Code: e8 8c d1 25 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 9a bb 1e 00 48 85 db 0f 85 8b 01 00 00 e8 7c c0 1e 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc900046ef288 EFLAGS: 00000246
RAX: fffff520008dde78 RBX: 0000000000000000 RCX: ffffc9000ab31000
RDX: 0000000000040000 RSI: ffffffff81341cd4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000200
R13: ffffffff889797d8 R14: ffffffff88979780 R15: ffffc900046ef3c0
console_unlock+0xae/0x290 kernel/printk/printk.c:3048
vprintk_emit kernel/printk/printk.c:2348 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
dev_vprintk_emit drivers/base/core.c:4950 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
__dev_printk+0xf5/0x270 drivers/base/core.c:4973
_dev_notice+0xe5/0x120 drivers/base/core.c:5018
usb_get_configuration+0x3f45/0x5c00 drivers/usb/core/config.c:905
usb_enumerate_device drivers/usb/core/hub.c:2483 [inline]
usb_new_device+0x1189/0x1a10 drivers/usb/core/hub.c:2621
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
process_scheduled_works kernel/workqueue.c:3348 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10367 ticks this GP) idle=b2f4/1/0x4000000000000000 softirq=24959/25618 fqs=5167
rcu: hardirqs softirqs csw/system
rcu: number: 1 1249 0
rcu: cputime: 0 48552 3209 ==> 52490(ms)
rcu: (t=10500 jiffies g=33877 q=158116 ncpus=2)
CPU: 1 PID: 2363 Comm: kworker/1:2 Not tainted 6.9.0-rc7-syzkaller-00158-g51474ab44abf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:2985
Code: e8 8c d1 25 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 9a bb 1e 00 48 85 db 0f 85 8b 01 00 00 e8 7c c0 1e 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc900046ef288 EFLAGS: 00000246
RAX: fffff520008dde78 RBX: 0000000000000000 RCX: ffffc9000ab31000
RDX: 0000000000040000 RSI: ffffffff81341cd4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000200
R13: ffffffff889797d8 R14: ffffffff88979780 R15: ffffc900046ef3c0
FS: 0000000000000000(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31626000 CR3: 000000000829e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
console_unlock+0xae/0x290 kernel/printk/printk.c:3048
vprintk_emit kernel/printk/printk.c:2348 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
dev_vprintk_emit drivers/base/core.c:4950 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
__dev_printk+0xf5/0x270 drivers/base/core.c:4973
_dev_notice+0xe5/0x120 drivers/base/core.c:5018
usb_get_configuration+0x3f45/0x5c00 drivers/usb/core/config.c:905
usb_enumerate_device drivers/usb/core/hub.c:2483 [inline]
usb_new_device+0x1189/0x1a10 drivers/usb/core/hub.c:2621
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
process_scheduled_works kernel/workqueue.c:3348 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
kthread+0x2c1/0x3a0 kernel/kthread.c:388
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: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
} 11050 jiffies s: 1673 root: 0x0/.