DUID 00:04:e7:a9:54:ba:d6:ca:b0:a9:a8:44:aa:dd:15:41:58:fb forked to background, child pid 3176 [ 26.132730][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.143147][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.446519][ T3592] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor146/3592 [ 47.456242][ T3592] caller is netdev_core_stats_alloc+0x98/0x110 [ 47.463275][ T3592] CPU: 1 PID: 3592 Comm: syz-executor146 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 47.473750][ T3592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.483783][ T3592] Call Trace: [ 47.487049][ T3592] [ 47.489961][ T3592] dump_stack_lvl+0xcd/0x134 [ 47.494545][ T3592] check_preemption_disabled+0x16b/0x170 [ 47.500166][ T3592] netdev_core_stats_alloc+0x98/0x110 [ 47.505522][ T3592] tun_get_user+0x3455/0x3ab0 [ 47.510200][ T3592] ? tun_build_skb+0x1010/0x1010 [ 47.515120][ T3592] ? lock_downgrade+0x6e0/0x6e0 [ 47.519961][ T3592] tun_chr_write_iter+0xe1/0x200 [ 47.524880][ T3592] new_sync_write+0x431/0x660 [ 47.529556][ T3592] ? new_sync_read+0x6e0/0x6e0 [ 47.534324][ T3592] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 47.540583][ T3592] ? security_file_permission+0xab/0xd0 [ 47.546116][ T3592] vfs_write+0x7cd/0xae0 [ 47.550354][ T3592] ksys_write+0x12d/0x250 [ 47.554666][ T3592] ? __ia32_sys_read+0xb0/0xb0 [ 47.559416][ T3592] ? syscall_enter_from_user_mode+0x21/0x70 [ 47.565306][ T3592] do_syscall_64+0x35/0xb0 [ 47.569715][ T3592] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.575597][ T3592] RIP: 0033:0x7fb9dfef97e3 [ 47.580001][ T3592] 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 [ 47.599596][ T3592] RSP: 002b:00007ffe9b0bb4f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 47.607997][ T3592] RAX: ffffffffffffffda RBX: 00007ffe9b0bb520 RCX: 00007fb9dfef97e3 [ 47.616091][ T3592] RDX: 000000000000006a RSI: 0000000000000000 RDI: 00000000000000c8 [ 47.624050][ T3592] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 47.632007][ T3592] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 47.639974][ T3592] R13: 00007ffe9b0bb510 R14: 00007ffe9b0bb508 R15: 00007ffe9b0bb504 [ 47.647946][ T3592]