Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.629512][ T3600] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor305/3600 [ 48.639347][ T3600] caller is netdev_core_stats_alloc+0x98/0x110 [ 48.645569][ T3600] CPU: 0 PID: 3600 Comm: syz-executor305 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 48.656055][ T3600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.666271][ T3600] Call Trace: [ 48.669535][ T3600] [ 48.672461][ T3600] dump_stack_lvl+0xcd/0x134 [ 48.677044][ T3600] check_preemption_disabled+0x16b/0x170 [ 48.682765][ T3600] netdev_core_stats_alloc+0x98/0x110 [ 48.688130][ T3600] tun_get_user+0x3455/0x3ab0 [ 48.692798][ T3600] ? tun_build_skb+0x1010/0x1010 [ 48.697746][ T3600] ? lock_downgrade+0x6e0/0x6e0 [ 48.702599][ T3600] tun_chr_write_iter+0xe1/0x200 [ 48.707522][ T3600] new_sync_write+0x431/0x660 [ 48.712190][ T3600] ? new_sync_read+0x6e0/0x6e0 [ 48.716962][ T3600] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.723200][ T3600] ? security_file_permission+0xab/0xd0 [ 48.728742][ T3600] vfs_write+0x7cd/0xae0 [ 48.732972][ T3600] ksys_write+0x12d/0x250 [ 48.737297][ T3600] ? __ia32_sys_read+0xb0/0xb0 [ 48.742049][ T3600] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.747931][ T3600] do_syscall_64+0x35/0xb0 [ 48.752329][ T3600] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.758470][ T3600] RIP: 0033:0x7f5a1c6587e3 [ 48.762881][ T3600] 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 [ 48.782476][ T3600] RSP: 002b:00007ffd4ed6ccb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 48.790877][ T3600] RAX: ffffffffffffffda RBX: 00007ffd4ed6cce0 RCX: 00007f5a1c6587e3 [ 48.798840][ T3600] RDX: 00000000000000f7 RSI: 0000000000000000 RDI: 00000000000000c8 [ 48.806801][ T3600] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 48.814760][ T3600] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 48.822732][ T3600] R13: 00007ffd4ed6ccd0 R14: 00007ffd4ed6ccc8 R15: 00007ffd4ed6ccc4 [ 48.830715][ T3600]