INFO: task syz.3.1103:11900 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1103      state:D stack:29032 pid:11900 tgid:11878 ppid:11068  task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
 rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185
 __down_write_common kernel/locking/rwsem.c:1317 [inline]
 __down_write kernel/locking/rwsem.c:1326 [inline]
 down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
 inode_lock include/linux/fs.h:869 [inline]
 vfs_removexattr+0x6c/0x1b0 fs/xattr.c:574
 removexattr fs/xattr.c:1023 [inline]
 filename_removexattr fs/xattr.c:1052 [inline]
 path_removexattrat+0x35d/0x690 fs/xattr.c:1088
 __do_sys_lremovexattr fs/xattr.c:1106 [inline]
 __se_sys_lremovexattr fs/xattr.c:1103 [inline]
 __x64_sys_lremovexattr+0x65/0x80 fs/xattr.c:1103
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3e658ebe9
RSP: 002b:00007fc3e73d1038 EFLAGS: 00000246 ORIG_RAX: 00000000000000c6
RAX: ffffffffffffffda RBX: 00007fc3e67b6090 RCX: 00007fc3e658ebe9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 00002000000000c0
RBP: 00007fc3e6611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc3e67b6128 R14: 00007fc3e67b6090 R15: 00007fffcaf2ffe8
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
 watchdog+0xf60/0xfa0 kernel/hung_task.c:495
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12294 Comm: kworker/u8:18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:_get_random_bytes+0x10/0x210 drivers/char/random.c:397
Code: 89 de 5b 41 5e eb 13 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 <53> 48 83 e4 e0 48 81 ec 00 01 00 00 48 89 f3 49 89 fe 65 48 8b 05
RSP: 0018:ffffc90003b5f5f0 EFLAGS: 00000293
RAX: ffffffff85561592 RBX: ffffc90003b5f920 RCX: ffff88806db61e00
RDX: 0000000000000000 RSI: 0000000000000020 RDI: ffff888077720bc0
RBP: ffffc90003b5f610 R08: ffffc90003b5f597 R09: 0000000000000000
R10: ffffc90003b5f520 R11: fffff5200076beb3 R12: dffffc0000000000
R13: ffff888077720bc0 R14: ffff888077720be0 R15: ffff888077720b88
FS:  0000000000000000(0000) GS:ffff888125aff000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ca60f CR3: 000000007cc96000 CR4: 00000000003526f0
DR0: 0000000000000080 DR1: 0000000000008aca DR2: 0000002000000006
DR3: 0000000000000009 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 get_random_bytes_wait include/linux/random.h:129 [inline]
 curve25519_generate_secret include/crypto/curve25519.h:69 [inline]
 wg_noise_handshake_create_initiation+0x1ba/0x7e0 drivers/net/wireguard/noise.c:541
 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
 wg_packet_handshake_send_worker+0x163/0x320 drivers/net/wireguard/send.c:51
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>