forked to background, child pid 3049 no interfaces have a carrier [ 63.374054][ T3050] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.389287][ T3050] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.71' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.938558][ T3474] ===================================================== [ 82.945597][ T3474] BUG: KMSAN: uninit-value in arch_stack_walk+0x1ad/0x3c0 [ 82.952732][ T3474] arch_stack_walk+0x1ad/0x3c0 [ 82.957534][ T3474] stack_trace_save+0x43/0x60 [ 82.962239][ T3474] kmsan_internal_chain_origin+0xa9/0x110 [ 82.968007][ T3474] kmsan_internal_memmove_metadata+0x1f2/0x2e0 [ 82.974200][ T3474] __msan_memcpy+0x65/0x90 [ 82.978635][ T3474] sock_write_iter+0x605/0x690 [ 82.983423][ T3474] do_iter_readv_writev+0xa7f/0xc70 [ 82.988628][ T3474] do_iter_write+0x52c/0x1500 [ 82.993326][ T3474] do_writev+0x645/0xe00 [ 82.997573][ T3474] __x64_sys_writev+0xe5/0x120 [ 83.002355][ T3474] do_syscall_64+0x54/0xd0 [ 83.006794][ T3474] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 83.012706][ T3474] [ 83.015019][ T3474] Local variable regs created at: [ 83.020029][ T3474] __bpf_prog_run32+0x84/0x180 [ 83.024803][ T3474] __bpf_prog_run_save_cb+0x168/0x580 [ 83.030193][ T3474] [ 83.032506][ T3474] CPU: 1 PID: 3474 Comm: syz-executor178 Not tainted 5.17.0-rc4-syzkaller #0 [ 83.041273][ T3474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.051348][ T3474] ===================================================== [ 83.058268][ T3474] Disabling lock debugging due to kernel taint [ 83.064785][ T3474] Kernel panic - not syncing: kmsan.panic set ... [ 83.071210][ T3474] CPU: 1 PID: 3474 Comm: syz-executor178 Tainted: G B 5.17.0-rc4-syzkaller #0 [ 83.081394][ T3474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.091454][ T3474] Call Trace: [ 83.094725][ T3474] [ 83.097653][ T3474] dump_stack_lvl+0x1ff/0x28e [ 83.102361][ T3474] dump_stack+0x25/0x28 [ 83.106549][ T3474] panic+0x487/0xe1f [ 83.110467][ T3474] ? add_taint+0x181/0x210 [ 83.114916][ T3474] ? _raw_spin_unlock_irqrestore+0x78/0xb0 [ 83.120746][ T3474] kmsan_report+0x2e6/0x2f0 [ 83.125276][ T3474] ? kmsan_get_metadata+0x33/0x220 [ 83.130429][ T3474] ? __msan_warning+0xb8/0x130 [ 83.135234][ T3474] ? arch_stack_walk+0x1ad/0x3c0 [ 83.140189][ T3474] ? stack_trace_save+0x43/0x60 [ 83.145058][ T3474] ? kmsan_internal_chain_origin+0xa9/0x110 [ 83.150975][ T3474] ? kmsan_internal_memmove_metadata+0x1f2/0x2e0 [ 83.157334][ T3474] ? __msan_memcpy+0x65/0x90 [ 83.161970][ T3474] ? sock_write_iter+0x605/0x690 [ 83.166956][ T3474] ? do_iter_readv_writev+0xa7f/0xc70 [ 83.172340][ T3474] ? do_iter_write+0x52c/0x1500 [ 83.177235][ T3474] ? do_writev+0x645/0xe00 [ 83.181660][ T3474] ? __x64_sys_writev+0xe5/0x120 [ 83.186628][ T3474] ? do_syscall_64+0x54/0xd0 [ 83.191240][ T3474] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 83.197332][ T3474] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 83.203171][ T3474] ? ___bpf_prog_run+0xb34b/0xb420 [ 83.208308][ T3474] ? bpf_skb_get_nlattr+0x2f0/0x2f0 [ 83.213554][ T3474] ? __stack_depot_save+0x21/0x4d0 [ 83.218693][ T3474] ? kmsan_get_metadata+0x33/0x220 [ 83.223853][ T3474] ? kmsan_internal_set_shadow_origin+0x5e/0xc0 [ 83.230132][ T3474] ? kmsan_internal_set_shadow_origin+0x5e/0xc0 [ 83.236402][ T3474] __msan_warning+0xb8/0x130 [ 83.241019][ T3474] arch_stack_walk+0x1ad/0x3c0 [ 83.245825][ T3474] ? stack_trace_save+0x60/0x60 [ 83.250699][ T3474] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 83.256540][ T3474] stack_trace_save+0x43/0x60 [ 83.261253][ T3474] kmsan_internal_chain_origin+0xa9/0x110 [ 83.266999][ T3474] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 83.272837][ T3474] ? scm_destroy+0xec/0x100 [ 83.277371][ T3474] ? unix_dgram_sendmsg+0x2a5b/0x3220 [ 83.282788][ T3474] ? sock_no_sendpage_locked+0x2c0/0x2c0 [ 83.288458][ T3474] kmsan_internal_memmove_metadata+0x1f2/0x2e0 [ 83.294669][ T3474] __msan_memcpy+0x65/0x90 [ 83.299111][ T3474] sock_write_iter+0x605/0x690 [ 83.303903][ T3474] ? btf_resolve+0xb90/0x2150 [ 83.308603][ T3474] ? sock_read_iter+0x630/0x630 [ 83.313480][ T3474] do_iter_readv_writev+0xa7f/0xc70 [ 83.318713][ T3474] ? sock_read_iter+0x630/0x630 [ 83.323591][ T3474] do_iter_write+0x52c/0x1500 [ 83.328312][ T3474] do_writev+0x645/0xe00 [ 83.332582][ T3474] ? btf_resolve+0xb90/0x2150 [ 83.337305][ T3474] ? kmsan_get_metadata+0x33/0x220 [ 83.342463][ T3474] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 83.348300][ T3474] ? kmsan_get_metadata+0x33/0x220 [ 83.353442][ T3474] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 83.359309][ T3474] __x64_sys_writev+0xe5/0x120 [ 83.364122][ T3474] do_syscall_64+0x54/0xd0 [ 83.368568][ T3474] ? exc_page_fault+0x76/0x150 [ 83.373388][ T3474] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 83.379342][ T3474] RIP: 0033:0x7f2ba49dde09 [ 83.383783][ T3474] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 83.403407][ T3474] RSP: 002b:00007ffcd9c15778 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 83.411838][ T3474] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ba49dde09 [ 83.419836][ T3474] RDX: 0000000000000001 RSI: 00000000200012c0 RDI: 0000000000000003 [ 83.427814][ T3474] RBP: 0000000000000000 R08: 00007ffcd9c15918 R09: 00007ffcd9c15918 [ 83.435812][ T3474] R10: 00007ffcd9c15918 R11: 0000000000000246 R12: 00007f2ba49a1690 [ 83.443828][ T3474] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 83.451819][ T3474] [ 83.455021][ T3474] Kernel Offset: disabled [ 83.459361][ T3474] Rebooting in 86400 seconds..