INFO: task syz.1.3695:11410 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.3695      state:D stack:0     pid:11410 tgid:11409 ppid:10286  flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7944
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x81e/0x1b50 kernel/locking/mutex.c:803
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1134
 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:908 [inline]
 usbdev_open+0x171/0x840 drivers/usb/core/devio.c:1051
 chrdev_open+0x4de/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x978/0x1510 fs/open.c:960
 vfs_open+0x86/0x230 fs/open.c:1090
 do_open fs/namei.c:3774 [inline]
 path_openat+0x2b6c/0x34b0 fs/namei.c:3933
 do_filp_open+0x1c6/0x3e0 fs/namei.c:3960
 do_sys_openat2+0x12c/0x1c0 fs/open.c:1438
 do_sys_open fs/open.c:1453 [inline]
 __do_sys_openat fs/open.c:1469 [inline]
 __se_sys_openat fs/open.c:1464 [inline]
 __x64_sys_openat+0x13a/0x170 fs/open.c:1464
 x64_sys_call+0xe69/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa676b8d710
RSP: 002b:00007fa6755f6b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000002002 RCX: 00007fa676b8d710
RDX: 0000000000002002 RSI: 00007fa6755f6c10 RDI: 00000000ffffff9c
RBP: 00007fa6755f6c10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: cccccccccccccccd
R13: 00007fa676de6038 R14: 00007fa676de5fa0 R15: 00007ffc89ea15e8
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 687dd8cc987f259803714ab19d9ffd663b1e6878
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 16115 Comm: syz.5.5242 Not tainted syzkaller #0 687dd8cc987f259803714ab19d9ffd663b1e6878
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__rcu_read_unlock+0x0/0xc0 kernel/rcu/tree_plugin.h:430
Code: 7c ea 48 89 df e8 20 02 6d 00 eb e0 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 b8 e6 0a 4b 14 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 48 89 e5 41 57 41 56 53 49 be 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000230dd8 EFLAGS: 00000202
RAX: 1ffff1102034d980 RBX: 0000000100004356 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000080 RDI: 0000000000000000
RBP: ffffc90000230ef0 R08: ffff8881f6f28e17 R09: 1ffff1103ede51c2
R10: dffffc0000000000 R11: ffffed103ede51c3 R12: ffff8881f6f4f980
R13: dffffc0000000000 R14: ffff888101a6cc48 R15: 1ffff920000461cc
FS:  00007f6a8a1b26c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556a7a34a8 CR3: 000000012c144000 CR4: 00000000003526b0
Call Trace:
 <IRQ>
 sched_balance_softirq+0xbd/0x170 kernel/sched/fair.c:13234
 handle_softirqs+0x1ab/0x630 kernel/softirq.c:621
 __do_softirq kernel/softirq.c:659 [inline]
 invoke_softirq kernel/softirq.c:476 [inline]
 __irq_exit_rcu+0x48/0xc0 kernel/softirq.c:708
 irq_exit_rcu+0xd/0x30 kernel/softirq.c:720
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x82/0x90 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2076 [inline]
RIP: 0010:vprintk_emit+0x530/0x640 kernel/printk/printk.c:2462
Code: 81 e6 00 02 00 00 31 ff e8 ad 2c 1e 00 48 81 e3 00 02 00 00 75 07 e8 bf 27 1e 00 eb 06 e8 b8 27 1e 00 fb c6 05 d0 a4 31 07 00 <e9> 42 fd ff ff e8 a6 27 1e 00 e9 a5 fe ff ff 41 ff ce bf 58 89 41
RSP: 0018:ffffc900055b72e0 EFLAGS: 00000293
RAX: ffffffff8167d628 RBX: 0000000000000200 RCX: ffff8881082da600
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: ffffc900055b73a8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000ab6e4c R12: 1ffff92000ab6e60
R13: 0000000000000040 R14: 0000000000000000 R15: dffffc0000000000
 vprintk_default+0x2a/0x40 kernel/printk/printk.c:2478
 vprintk+0x93/0xa0 kernel/printk/printk_safe.c:73
 _printk+0xd0/0x120 kernel/printk/printk.c:2488
 __show_mem+0x26fa/0x28c0 mm/show_mem.c:456
 warn_alloc_show_mem+0x157/0x290 mm/page_alloc.c:3968
 warn_alloc+0x1c8/0x2a0 mm/page_alloc.c:3994
 __vmalloc_node_range_noprof+0x135/0x1420 mm/vmalloc.c:3795
 vmalloc_user_noprof+0x77/0x90 mm/vmalloc.c:4024
 xskq_create+0xdb/0x2a0 net/xdp/xsk_queue.c:49
 xsk_init_queue+0xb6/0x120 net/xdp/xsk.c:1018
 xsk_setsockopt+0x43f/0x6f0 net/xdp/xsk.c:1421
 do_sock_setsockopt+0x26d/0x400 net/socket.c:2337
 __sys_setsockopt net/socket.c:2360 [inline]
 __do_sys_setsockopt net/socket.c:2369 [inline]
 __se_sys_setsockopt net/socket.c:2366 [inline]
 __x64_sys_setsockopt+0x1b8/0x250 net/socket.c:2366
 x64_sys_call+0x2adc/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f6a8938eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6a8a1b2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f6a895e5fa0 RCX: 00007f6a8938eec9
RDX: 0000000000000006 RSI: 000000000000011b RDI: 0000000000000004
RBP: 00007f6a89411f91 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a895e6038 R14: 00007f6a895e5fa0 R15: 00007ffd3c5464a8
 </TASK>