DUID 00:04:80:46:6d:cf:4f:d2:f0:e0:d6:d4:98:c6:35:1e:6d:ad forked to background, child pid 3175 [ 27.120429][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.130606][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.693426][ T3591] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor465/3591 [ 52.704547][ T3591] caller is netdev_core_stats_alloc+0x98/0x110 [ 52.710854][ T3591] CPU: 0 PID: 3591 Comm: syz-executor465 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 52.721341][ T3591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.731382][ T3591] Call Trace: [ 52.734662][ T3591] [ 52.737578][ T3591] dump_stack_lvl+0xcd/0x134 [ 52.742159][ T3591] check_preemption_disabled+0x16b/0x170 [ 52.747995][ T3591] netdev_core_stats_alloc+0x98/0x110 [ 52.753393][ T3591] tun_get_user+0x3455/0x3ab0 [ 52.758104][ T3591] ? tun_build_skb+0x1010/0x1010 [ 52.763036][ T3591] ? lock_downgrade+0x6e0/0x6e0 [ 52.767883][ T3591] tun_chr_write_iter+0xe1/0x200 [ 52.772846][ T3591] new_sync_write+0x431/0x660 [ 52.777515][ T3591] ? new_sync_read+0x6e0/0x6e0 [ 52.782274][ T3591] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.788519][ T3591] ? security_file_permission+0xab/0xd0 [ 52.794055][ T3591] vfs_write+0x7cd/0xae0 [ 52.798290][ T3591] ksys_write+0x12d/0x250 [ 52.802712][ T3591] ? __ia32_sys_read+0xb0/0xb0 [ 52.807475][ T3591] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.813390][ T3591] do_syscall_64+0x35/0xb0 [ 52.817800][ T3591] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.823703][ T3591] RIP: 0033:0x7f762c2087e3 [ 52.828104][ T3591] 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 [ 52.847787][ T3591] RSP: 002b:00007fff6f2a8378 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 52.856185][ T3591] RAX: ffffffffffffffda RBX: 00007fff6f2a83a0 RCX: 00007f762c2087e3 [ 52.864141][ T3591] RDX: 000000000000006a RSI: 0000000000000000 RDI: 00000000000000c8 [ 52.872092][ T3591] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 52.880051][ T3591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 52.888020][ T3591] R13: 00007fff6f2a8390 R14: 00007fff6f2a8388 R15: 00007fff6f2a8384 [ 52.895997][ T3591]