Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 92.980340][ T3479] ===================================================== [ 92.987518][ T3479] BUG: KMSAN: kernel-infoleak in _copy_to_user+0x1c9/0x270 [ 92.994751][ T3479] _copy_to_user+0x1c9/0x270 [ 92.999508][ T3479] move_addr_to_user+0x3f6/0x600 [ 93.004493][ T3479] __sys_getpeername+0x470/0x6b0 [ 93.009460][ T3479] __x64_sys_getpeername+0xda/0x120 [ 93.014693][ T3479] do_syscall_64+0x54/0xd0 [ 93.019147][ T3479] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.025171][ T3479] [ 93.027510][ T3479] Uninit was stored to memory at: [ 93.032582][ T3479] tipc_getname+0x575/0x5e0 [ 93.037100][ T3479] __sys_getpeername+0x3b3/0x6b0 [ 93.042057][ T3479] __x64_sys_getpeername+0xda/0x120 [ 93.047291][ T3479] do_syscall_64+0x54/0xd0 [ 93.051764][ T3479] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.057709][ T3479] [ 93.060032][ T3479] Uninit was stored to memory at: [ 93.065105][ T3479] __tipc_sendmsg+0x44fa/0x5890 [ 93.069991][ T3479] tipc_sendmsg+0xeb/0x140 [ 93.074432][ T3479] ____sys_sendmsg+0xe11/0x12c0 [ 93.079438][ T3479] __sys_sendmsg+0x704/0x840 [ 93.084049][ T3479] __x64_sys_sendmsg+0xe2/0x120 [ 93.088922][ T3479] do_syscall_64+0x54/0xd0 [ 93.093363][ T3479] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.099292][ T3479] [ 93.101607][ T3479] Local variable skaddr created at: [ 93.106797][ T3479] __tipc_sendmsg+0x2d0/0x5890 [ 93.111600][ T3479] tipc_sendmsg+0xeb/0x140 [ 93.116093][ T3479] [ 93.118418][ T3479] Bytes 4-7 of 16 are uninitialized [ 93.123628][ T3479] Memory access of size 16 starts at ffff888113753e00 [ 93.130386][ T3479] Data copied to user address 0000000020000280 [ 93.136530][ T3479] [ 93.138849][ T3479] CPU: 1 PID: 3479 Comm: syz-executor115 Not tainted 5.16.0-rc5-syzkaller #0 [ 93.147628][ T3479] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.157689][ T3479] ===================================================== [ 93.164617][ T3479] Disabling lock debugging due to kernel taint [ 93.171067][ T3479] Kernel panic - not syncing: kmsan.panic set ... [ 93.177499][ T3479] CPU: 1 PID: 3479 Comm: syz-executor115 Tainted: G B 5.16.0-rc5-syzkaller #0 [ 93.187684][ T3479] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.197748][ T3479] Call Trace: [ 93.201035][ T3479] [ 93.203979][ T3479] dump_stack_lvl+0x1ff/0x28e [ 93.208686][ T3479] dump_stack+0x25/0x28 [ 93.212863][ T3479] panic+0x487/0xe1f [ 93.216805][ T3479] ? add_taint+0x181/0x210 [ 93.221237][ T3479] ? _raw_spin_unlock_irqrestore+0x78/0xb0 [ 93.227076][ T3479] kmsan_report+0x2e6/0x2f0 [ 93.231618][ T3479] ? arch_stack_walk+0x291/0x3c0 [ 93.236596][ T3479] ? kmsan_internal_check_memory+0x1ab/0x540 [ 93.242605][ T3479] ? kmsan_copy_to_user+0xe1/0xf0 [ 93.247661][ T3479] ? _copy_to_user+0x1c9/0x270 [ 93.252482][ T3479] ? move_addr_to_user+0x3f6/0x600 [ 93.257622][ T3479] ? __sys_getpeername+0x470/0x6b0 [ 93.262757][ T3479] ? __x64_sys_getpeername+0xda/0x120 [ 93.268171][ T3479] ? do_syscall_64+0x54/0xd0 [ 93.272781][ T3479] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.278906][ T3479] ? _raw_spin_unlock_irqrestore+0x78/0xb0 [ 93.284753][ T3479] ? __stack_depot_save+0x3a9/0x4d0 [ 93.289986][ T3479] ? kmsan_internal_chain_origin+0xf3/0x110 [ 93.295902][ T3479] ? kmsan_internal_chain_origin+0xa9/0x110 [ 93.301820][ T3479] ? __msan_chain_origin+0xbf/0x140 [ 93.307050][ T3479] ? tipc_getname+0x575/0x5e0 [ 93.311771][ T3479] ? __sys_getpeername+0x3b3/0x6b0 [ 93.316913][ T3479] ? __x64_sys_getpeername+0xda/0x120 [ 93.322324][ T3479] ? do_syscall_64+0x54/0xd0 [ 93.326941][ T3479] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.333078][ T3479] ? kmsan_get_metadata+0x33/0x220 [ 93.338211][ T3479] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 93.344136][ T3479] kmsan_internal_check_memory+0x1ab/0x540 [ 93.349978][ T3479] kmsan_copy_to_user+0xe1/0xf0 [ 93.354853][ T3479] ? should_fail_usercopy+0x39/0x40 [ 93.360071][ T3479] _copy_to_user+0x1c9/0x270 [ 93.364724][ T3479] move_addr_to_user+0x3f6/0x600 [ 93.369690][ T3479] ? tipc_accept+0x22b0/0x22b0 [ 93.374477][ T3479] __sys_getpeername+0x470/0x6b0 [ 93.379440][ T3479] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 93.385297][ T3479] ? kmsan_get_metadata+0x33/0x220 [ 93.390455][ T3479] ? kmsan_get_shadow_origin_ptr+0x9b/0xf0 [ 93.396291][ T3479] __x64_sys_getpeername+0xda/0x120 [ 93.401525][ T3479] do_syscall_64+0x54/0xd0 [ 93.405993][ T3479] ? exc_page_fault+0x76/0x150 [ 93.410786][ T3479] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 93.416744][ T3479] RIP: 0033:0x7fab42bdadc9 [ 93.421180][ T3479] 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 [ 93.440803][ T3479] RSP: 002b:00007fff1fbc7588 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 93.449416][ T3479] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fab42bdadc9 [ 93.457402][ T3479] RDX: 00000000200002c0 RSI: 0000000020000280 RDI: 0000000000000004 [ 93.465429][ T3479] RBP: 0000000000000000 R08: 00007fff1fbc7728 R09: 00007fff1fbc7728 [ 93.473413][ T3479] R10: 00007fff1fbc7728 R11: 0000000000000246 R12: 00007fab42b9e650 [ 93.481402][ T3479] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 93.489412][ T3479] [ 93.492525][ T3479] Kernel Offset: disabled [ 93.496855][ T3479] Rebooting in 86400 seconds..