forked to background, child pid 4669 [ 36.611578][ T4670] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.624559][ T4670] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 36.984172][ T4746] sshd (4746) used greatest stack depth: 22376 bytes left OK syzkaller Warning: Permanently added '10.128.0.152' (ECDSA) to the list of known hosts. 2023/07/03 21:11:37 fuzzer started 2023/07/03 21:11:38 connecting to host at 10.128.0.169:39299 2023/07/03 21:11:38 checking machine... 2023/07/03 21:11:38 checking revisions... 2023/07/03 21:11:38 testing simple program... syzkaller login: [ 58.480593][ T5001] cgroup: Unknown subsys name 'net' [ 58.588864][ T5001] cgroup: Unknown subsys name 'rlimit' [ 59.971986][ T5001] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 59.985101][ T4996] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4996 'syz-fuzzer' [ 60.090597][ T5003] ================================================================================ [ 60.100204][ T5003] UBSAN: array-index-out-of-bounds in kernel/pid.c:244:15 [ 60.107484][ T5003] index 1 is out of range for type 'upid [1]' [ 60.113696][ T5003] CPU: 1 PID: 5003 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-04303-g2c5d234d7f55 #0 [ 60.123786][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 60.134021][ T5003] Call Trace: [ 60.137300][ T5003] [ 60.140404][ T5003] dump_stack_lvl+0x136/0x150 [ 60.145113][ T5003] __ubsan_handle_out_of_bounds+0xd5/0x140 [ 60.150930][ T5003] ? down_read_killable+0x4a1/0x4f0 [ 60.156144][ T5003] alloc_pid+0xbe5/0xdd0 [ 60.160481][ T5003] ? copy_namespaces+0x1e3/0x500 [ 60.165519][ T5003] copy_process+0x4589/0x7620 [ 60.170322][ T5003] ? pidfd_prepare+0x80/0x80 [ 60.175109][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.181378][ T5003] kernel_clone+0xeb/0x890 [ 60.185808][ T5003] ? create_io_thread+0xe0/0xe0 [ 60.190935][ T5003] ? ksys_unshare+0x676/0x920 [ 60.195967][ T5003] ? lock_downgrade+0x690/0x690 [ 60.200913][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 60.206043][ T5003] ? spin_bug+0x1c0/0x1c0 [ 60.210389][ T5003] __do_sys_clone+0xba/0x100 [ 60.215087][ T5003] ? kernel_clone+0x890/0x890 [ 60.219880][ T5003] ? syscall_enter_from_user_mode+0x26/0x80 [ 60.225891][ T5003] do_syscall_64+0x39/0xb0 [ 60.230328][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.236242][ T5003] RIP: 0033:0x7ff32ae89fab [ 60.240657][ T5003] Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00 [ 60.260909][ T5003] RSP: 002b:00007ffebbe9c190 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 60.269595][ T5003] RAX: ffffffffffffffda RBX: 00007ffebbe9c7e8 RCX: 00007ff32ae89fab [ 60.277674][ T5003] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 60.285745][ T5003] RBP: 0000000000000000 R08: 0000000000000000 R09: 00005555565ed400 [ 60.293835][ T5003] R10: 00005555565ed6d0 R11: 0000000000000246 R12: 0000000000000000 [ 60.301987][ T5003] R13: 00007ffebbe9c280 R14: 00007ff32afac9d8 R15: 000000000000000c [ 60.309987][ T5003] [ 60.314253][ T5003] ================================================================================ [ 60.323947][ T5003] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 60.331322][ T5003] CPU: 0 PID: 5003 Comm: syz-executor.0 Not tainted 6.4.0-syzkaller-04303-g2c5d234d7f55 #0 [ 60.341908][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 60.352140][ T5003] Call Trace: [ 60.355652][ T5003] [ 60.358690][ T5003] dump_stack_lvl+0xd9/0x150 [ 60.363472][ T5003] panic+0x686/0x730 [ 60.367545][ T5003] ? panic_smp_self_stop+0xa0/0xa0 [ 60.372657][ T5003] ? syslog_print_all+0x3a0/0x3a0 [ 60.378203][ T5003] check_panic_on_warn+0xb1/0xc0 [ 60.383141][ T5003] __ubsan_handle_out_of_bounds+0xfd/0x140 [ 60.389285][ T5003] ? down_read_killable+0x4a1/0x4f0 [ 60.394825][ T5003] alloc_pid+0xbe5/0xdd0 [ 60.399057][ T5003] ? copy_namespaces+0x1e3/0x500 [ 60.404014][ T5003] copy_process+0x4589/0x7620 [ 60.408819][ T5003] ? pidfd_prepare+0x80/0x80 [ 60.413717][ T5003] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.419805][ T5003] kernel_clone+0xeb/0x890 [ 60.424259][ T5003] ? create_io_thread+0xe0/0xe0 [ 60.429194][ T5003] ? ksys_unshare+0x676/0x920 [ 60.433918][ T5003] ? lock_downgrade+0x690/0x690 [ 60.438800][ T5003] ? do_raw_spin_lock+0x124/0x2b0 [ 60.444099][ T5003] ? spin_bug+0x1c0/0x1c0 [ 60.448692][ T5003] __do_sys_clone+0xba/0x100 [ 60.453282][ T5003] ? kernel_clone+0x890/0x890 [ 60.458133][ T5003] ? syscall_enter_from_user_mode+0x26/0x80 [ 60.464367][ T5003] do_syscall_64+0x39/0xb0 [ 60.468953][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.474851][ T5003] RIP: 0033:0x7ff32ae89fab [ 60.479354][ T5003] Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00 [ 60.499134][ T5003] RSP: 002b:00007ffebbe9c190 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 60.507553][ T5003] RAX: ffffffffffffffda RBX: 00007ffebbe9c7e8 RCX: 00007ff32ae89fab [ 60.515514][ T5003] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 60.523475][ T5003] RBP: 0000000000000000 R08: 0000000000000000 R09: 00005555565ed400 [ 60.531439][ T5003] R10: 00005555565ed6d0 R11: 0000000000000246 R12: 0000000000000000 [ 60.539399][ T5003] R13: 00007ffebbe9c280 R14: 00007ff32afac9d8 R15: 000000000000000c [ 60.547372][ T5003] [ 60.550847][ T5003] Kernel Offset: disabled [ 60.555235][ T5003] Rebooting in 86400 seconds..