Warning: Permanently added '10.128.1.16' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.699250][ T3593] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor195/3593 [ 49.708818][ T3593] caller is netdev_core_stats_alloc+0x98/0x110 [ 49.715315][ T3593] CPU: 0 PID: 3593 Comm: syz-executor195 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 49.725823][ T3593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.735865][ T3593] Call Trace: [ 49.739128][ T3593] [ 49.742042][ T3593] dump_stack_lvl+0xcd/0x134 [ 49.746619][ T3593] check_preemption_disabled+0x16b/0x170 [ 49.752241][ T3593] netdev_core_stats_alloc+0x98/0x110 [ 49.757598][ T3593] tun_get_user+0x3455/0x3ab0 [ 49.762266][ T3593] ? tun_build_skb+0x1010/0x1010 [ 49.767189][ T3593] ? lock_downgrade+0x6e0/0x6e0 [ 49.772033][ T3593] tun_chr_write_iter+0xe1/0x200 [ 49.776955][ T3593] new_sync_write+0x431/0x660 [ 49.781618][ T3593] ? new_sync_read+0x6e0/0x6e0 [ 49.786372][ T3593] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.792609][ T3593] ? security_file_permission+0xab/0xd0 [ 49.798142][ T3593] vfs_write+0x7cd/0xae0 [ 49.802372][ T3593] ksys_write+0x12d/0x250 [ 49.806693][ T3593] ? __ia32_sys_read+0xb0/0xb0 [ 49.811443][ T3593] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.817326][ T3593] do_syscall_64+0x35/0xb0 [ 49.821726][ T3593] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.827605][ T3593] RIP: 0033:0x7f6d7afed7f3 [ 49.832003][ T3593] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 49.851592][ T3593] RSP: 002b:00007ffef7772448 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 49.859987][ T3593] RAX: ffffffffffffffda RBX: 00007ffef7772470 RCX: 00007f6d7afed7f3 [ 49.867939][ T3593] RDX: 000000000000001e RSI: 0000000000000000 RDI: 00000000000000c8 [ 49.875890][ T3593] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 49.883846][ T3593] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 49.891818][ T3593] R13: 00007ffef7772460 R14: 00007ffef7772458 R15: 00007ffef7772454 [ 49.899782][ T3593]