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 [ 26.905143][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.920587][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.558891][ T3591] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor106/3591 [ 55.568475][ T3591] caller is netdev_core_stats_alloc+0x98/0x110 [ 55.574658][ T3591] CPU: 0 PID: 3591 Comm: syz-executor106 Not tainted 5.17.0-rc7-syzkaller-02426-g97aeb877de7f #0 [ 55.585154][ T3591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.595373][ T3591] Call Trace: [ 55.598665][ T3591] [ 55.601589][ T3591] dump_stack_lvl+0xcd/0x134 [ 55.606166][ T3591] check_preemption_disabled+0x16b/0x170 [ 55.611789][ T3591] netdev_core_stats_alloc+0x98/0x110 [ 55.617274][ T3591] tun_get_user+0x2e67/0x3ab0 [ 55.621960][ T3591] ? tun_build_skb+0x1010/0x1010 [ 55.626883][ T3591] ? lock_downgrade+0x6e0/0x6e0 [ 55.631738][ T3591] tun_chr_write_iter+0xe1/0x200 [ 55.636682][ T3591] new_sync_write+0x431/0x660 [ 55.641364][ T3591] ? new_sync_read+0x6e0/0x6e0 [ 55.646121][ T3591] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 55.652348][ T3591] ? security_file_permission+0xab/0xd0 [ 55.657884][ T3591] vfs_write+0x7cd/0xae0 [ 55.662118][ T3591] ksys_write+0x12d/0x250 [ 55.666431][ T3591] ? __ia32_sys_read+0xb0/0xb0 [ 55.671179][ T3591] ? syscall_enter_from_user_mode+0x21/0x70 [ 55.677064][ T3591] do_syscall_64+0x35/0xb0 [ 55.681464][ T3591] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.687345][ T3591] RIP: 0033:0x7fde4977fa83 [ 55.691745][ 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 [ 55.711333][ T3591] RSP: 002b:00007ffe6ebfec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 55.719730][ T3591] RAX: ffffffffffffffda RBX: 00007ffe6ebfeca0 RCX: 00007fde4977fa83 [ 55.727689][ T3591] RDX: 0000000000000082 RSI: 0000000020000040 RDI: 00000000000000c8 [ 55.735665][ T3591] RBP: 0000000000000003 R08: bb1414ac6ebfeca7 R09: bb1414ac6ebfeca7 [ 55.743645][ T3591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 55.751625][ T3591] R13: 00007ffe6ebfec90 R14: 00007ffe6ebfec88 R15: 00007ffe6ebfec84 [ 55.759630][ T3591]