Warning: Permanently added '10.128.1.84' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.864732][ T3590] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor111/3590 [ 55.874413][ T3590] caller is netdev_core_stats_alloc+0x98/0x110 [ 55.880612][ T3590] CPU: 0 PID: 3590 Comm: syz-executor111 Not tainted 5.17.0-rc7-syzkaller-02443-gd96657dc9238 #0 [ 55.891189][ T3590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.901236][ T3590] Call Trace: [ 55.904511][ T3590] [ 55.907432][ T3590] dump_stack_lvl+0xcd/0x134 [ 55.912273][ T3590] check_preemption_disabled+0x16b/0x170 [ 55.917988][ T3590] netdev_core_stats_alloc+0x98/0x110 [ 55.923410][ T3590] tun_get_user+0x2e67/0x3ab0 [ 55.928081][ T3590] ? tun_build_skb+0x1010/0x1010 [ 55.933009][ T3590] ? lock_downgrade+0x6e0/0x6e0 [ 55.937942][ T3590] tun_chr_write_iter+0xe1/0x200 [ 55.942884][ T3590] new_sync_write+0x431/0x660 [ 55.947551][ T3590] ? new_sync_read+0x6e0/0x6e0 [ 55.952323][ T3590] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 55.958585][ T3590] ? security_file_permission+0xab/0xd0 [ 55.964128][ T3590] vfs_write+0x7cd/0xae0 [ 55.968363][ T3590] ksys_write+0x12d/0x250 [ 55.972695][ T3590] ? __ia32_sys_read+0xb0/0xb0 [ 55.977446][ T3590] ? syscall_enter_from_user_mode+0x21/0x70 [ 55.983418][ T3590] do_syscall_64+0x35/0xb0 [ 55.987823][ T3590] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.993707][ T3590] RIP: 0033:0x7f0fdfc167e3 [ 55.998106][ T3590] 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 [ 56.017694][ T3590] RSP: 002b:00007ffcaf806518 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 56.026108][ T3590] RAX: ffffffffffffffda RBX: 00007ffcaf806540 RCX: 00007f0fdfc167e3 [ 56.034063][ T3590] RDX: 0000000000001246 RSI: 0000000000000000 RDI: 00000000000000c8 [ 56.042018][ T3590] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 56.050064][ T3590] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 56.058033][ T3590] R13: 00007ffcaf806530 R14: 00007ffcaf806528 R15: 00007ffcaf806524 [ 56.065999][ T3590]