rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1):
P13555
rcu: (detected by 1, t=10502 jiffies, g=46745, q=322 ncpus=2)
rcu: rcu_preempt kthread starved for 8500 jiffies! g46745 f0x2 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:27488 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
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:
Sending NMI from CPU 1 to CPUs 0:
radio-si470x 5-1:0.0: non-zero urb status (-71)
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13555 Comm: syz.5.2021 Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:number+0x49/0xb80 lib/vsprintf.c:459
Code: 00 00 48 8d 44 24 50 48 89 54 24 10 48 c7 44 24 50 b3 8a b5 41 48 c1 e8 03 48 89 44 24 20 48 01 e8 48 c7 44 24 58 70 48 93 8d <48> c7 44 24 60 f0 7b 26 8b c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2
RSP: 0018:ffffc90000006f58 EFLAGS: 00000086
RAX: fffff52000000df5 RBX: ffffc90000007331 RCX: ffff0a0000000509
RDX: 000000000000031e RSI: ffffc9008000732f RDI: ffffc90000007331
RBP: dffffc0000000000 R08: 0000000000000005 R09: 000000000000002f
R10: 0000000000000010 R11: 0000000000196980 R12: ffffffff8b6db045
R13: ffffc900000071d8 R14: ffffc9008000732f R15: 0000000000000009
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03f03daf98 CR3: 000000000df7e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x92a/0x1880 lib/vsprintf.c:2914
sprintf+0xcd/0x110 lib/vsprintf.c:3052
print_time kernel/printk/printk.c:1381 [inline]
info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1407
record_print_text+0x141/0x400 kernel/printk/printk.c:1456
printk_get_next_message+0x2be/0x690 kernel/printk/printk.c:3008
console_emit_next_record kernel/printk/printk.c:3076 [inline]
console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3210
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
dev_vprintk_emit drivers/base/core.c:4935 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4946
__dev_printk+0xf5/0x270 drivers/base/core.c:4958
_dev_warn+0xe5/0x120 drivers/base/core.c:5002
si470x_int_in_callback+0x15e/0xca0 drivers/media/radio/si470x/radio-si470x-usb.c:378
__usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
dummy_timer+0x17f7/0x3960 drivers/usb/gadget/udc/dummy_hcd.c:1993
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
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 76 22 4a f6 48 89 df e8 ce a1 4a f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 c5 86 3b f6 65 8b 05 86 30 d7 74 85 c0 74 16 5b
RSP: 0018:ffffc9000500f688 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffffffff9aa7ace8 RCX: 1ffffffff2dcd401
RDX: 0000000000000000 RSI: ffffffff8b6cd9e0 RDI: ffffffff8bd1efe0
RBP: 0000000000000286 R08: 0000000000000001 R09: fffffbfff2dca79f
R10: ffffffff96e53cff R11: 0000000000000001 R12: ffff888033713800
R13: 0000000000000002 R14: 0000000000000002 R15: ffff888033713800
__debug_check_no_obj_freed lib/debugobjects.c:1108 [inline]
debug_check_no_obj_freed+0x327/0x600 lib/debugobjects.c:1129
slab_free_hook mm/slub.c:2284 [inline]
slab_free_freelist_hook mm/slub.c:2382 [inline]
slab_free_bulk mm/slub.c:4637 [inline]
kmem_cache_free_bulk.part.0+0x3d2/0x7f0 mm/slub.c:5001
mt_free_bulk lib/maple_tree.c:191 [inline]
mt_destroy_walk+0x9fd/0xfe0 lib/maple_tree.c:5350
mte_destroy_walk lib/maple_tree.c:5399 [inline]
mte_destroy_walk lib/maple_tree.c:5390 [inline]
__mt_destroy+0x310/0x3e0 lib/maple_tree.c:6879
exit_mmap+0x5ed/0xb20 mm/mmap.c:1706
__mmput+0x12a/0x4c0 kernel/fork.c:1348
mmput+0x62/0x70 kernel/fork.c:1370
exit_mm kernel/exit.c:570 [inline]
do_exit+0x9ba/0x2d70 kernel/exit.c:925
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3017
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f03ef585d29
Code: Unable to access opcode bytes at 0x7f03ef585cff.
RSP: 002b:00007f03f03db038 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: 000000000000009c RBX: 00007f03ef776160 RCX: 00007f03ef585d29
RDX: 0000000000000001 RSI: 0000000020001c80 RDI: 000000000000013f
RBP: 00007f03ef601b08 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020001d80 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f03ef776160 R15: 00007fffbcbf45d8
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)
radio-si470x 5-1:0.0: non-zero urb status (-71)