Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 138.682123][ T8466] ===================================================== [ 138.689085][ T8466] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x81/0x90 [ 138.696603][ T8466] CPU: 0 PID: 8466 Comm: syz-executor511 Not tainted 5.8.0-rc5-syzkaller #0 [ 138.705244][ T8466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.715279][ T8466] Call Trace: [ 138.718565][ T8466] dump_stack+0x21c/0x280 [ 138.722877][ T8466] kmsan_report+0xf7/0x1e0 [ 138.727276][ T8466] kmsan_internal_check_memory+0x238/0x3d0 [ 138.733058][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 138.738237][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 138.743417][ T8466] kmsan_copy_to_user+0x81/0x90 [ 138.748245][ T8466] _copy_to_user+0x18e/0x260 [ 138.752817][ T8466] move_addr_to_user+0x3de/0x670 [ 138.757743][ T8466] __sys_getsockname+0x407/0x5e0 [ 138.762660][ T8466] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 138.768789][ T8466] ? __prepare_exit_to_usermode+0x16c/0x560 [ 138.774785][ T8466] __se_sys_getsockname+0x91/0xb0 [ 138.779790][ T8466] __x64_sys_getsockname+0x4a/0x70 [ 138.784880][ T8466] do_syscall_64+0xad/0x160 [ 138.789362][ T8466] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 138.795229][ T8466] RIP: 0033:0x440219 [ 138.799103][ T8466] Code: Bad RIP value. [ 138.803173][ T8466] RSP: 002b:00007ffe5ee150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000033 [ 138.811558][ T8466] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 138.819505][ T8466] RDX: 0000000020000240 RSI: 0000000020000100 RDI: 0000000000000003 [ 138.827451][ T8466] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 138.835403][ T8466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a20 [ 138.843347][ T8466] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 138.851296][ T8466] [ 138.853609][ T8466] Local variable ----address@__sys_getsockname created at: [ 138.860791][ T8466] __sys_getsockname+0x91/0x5e0 [ 138.865617][ T8466] __sys_getsockname+0x91/0x5e0 [ 138.870434][ T8466] [ 138.872736][ T8466] Bytes 2-3 of 24 are uninitialized [ 138.877904][ T8466] Memory access of size 24 starts at ffff8880ba2c7de8 [ 138.884634][ T8466] Data copied to user address 0000000020000100 [ 138.890755][ T8466] ===================================================== [ 138.897658][ T8466] Disabling lock debugging due to kernel taint [ 138.903781][ T8466] Kernel panic - not syncing: panic_on_warn set ... [ 138.910346][ T8466] CPU: 0 PID: 8466 Comm: syz-executor511 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 138.920376][ T8466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.930408][ T8466] Call Trace: [ 138.933674][ T8466] dump_stack+0x21c/0x280 [ 138.937984][ T8466] panic+0x4d7/0xef7 [ 138.941864][ T8466] ? add_taint+0x17c/0x210 [ 138.946262][ T8466] kmsan_report+0x1df/0x1e0 [ 138.950745][ T8466] kmsan_internal_check_memory+0x238/0x3d0 [ 138.956527][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 138.961701][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 138.966879][ T8466] kmsan_copy_to_user+0x81/0x90 [ 138.971702][ T8466] _copy_to_user+0x18e/0x260 [ 138.976289][ T8466] move_addr_to_user+0x3de/0x670 [ 138.981206][ T8466] __sys_getsockname+0x407/0x5e0 [ 138.986125][ T8466] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 138.992254][ T8466] ? __prepare_exit_to_usermode+0x16c/0x560 [ 138.998151][ T8466] __se_sys_getsockname+0x91/0xb0 [ 139.003186][ T8466] __x64_sys_getsockname+0x4a/0x70 [ 139.008304][ T8466] do_syscall_64+0xad/0x160 [ 139.012816][ T8466] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.018708][ T8466] RIP: 0033:0x440219 [ 139.022591][ T8466] Code: Bad RIP value. [ 139.026653][ T8466] RSP: 002b:00007ffe5ee150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000033 [ 139.035069][ T8466] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 139.043039][ T8466] RDX: 0000000020000240 RSI: 0000000020000100 RDI: 0000000000000003 [ 139.051009][ T8466] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 139.058978][ T8466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a20 [ 139.066946][ T8466] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 139.075633][ T8466] ------------[ cut here ]------------ [ 139.081073][ T8466] kernel BUG at mm/kmsan/kmsan.h:87! [ 139.086338][ T8466] invalid opcode: 0000 [#1] SMP [ 139.091163][ T8466] CPU: 0 PID: 8466 Comm: syz-executor511 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 139.101189][ T8466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.111227][ T8466] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 139.117789][ T8466] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 139.137369][ T8466] RSP: 0018:ffff8880ba2c7808 EFLAGS: 00010046 [ 139.143420][ T8466] RAX: 0000000000000002 RBX: 0000000005a600ba RCX: 0000000005a600ba [ 139.151367][ T8466] RDX: 0000000000000000 RSI: 00000000000002e0 RDI: ffff8880ba2c78ec [ 139.159314][ T8466] RBP: ffff8880ba2c78b0 R08: ffffea000000000f R09: ffff88812fffa000 [ 139.167260][ T8466] R10: 0000000000000002 R11: ffff88810b06db80 R12: 0000000000000000 [ 139.175206][ T8466] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 139.183153][ T8466] FS: 0000000001916880(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 139.192052][ T8466] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 139.198608][ T8466] CR2: 0000000020000240 CR3: 00000000ba2e2000 CR4: 00000000001406f0 [ 139.206640][ T8466] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 139.214585][ T8466] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 139.222527][ T8466] Call Trace: [ 139.225812][ T8466] kmsan_check_memory+0xd/0x10 [ 139.230554][ T8466] iowrite8+0x99/0x300 [ 139.234601][ T8466] pvpanic_panic_notify+0xb7/0xe0 [ 139.239601][ T8466] ? pvpanic_mmio_remove+0x60/0x60 [ 139.244687][ T8466] atomic_notifier_call_chain+0x123/0x290 [ 139.250384][ T8466] panic+0x560/0xef7 [ 139.254262][ T8466] ? add_taint+0x17c/0x210 [ 139.258656][ T8466] kmsan_report+0x1df/0x1e0 [ 139.263138][ T8466] kmsan_internal_check_memory+0x238/0x3d0 [ 139.268918][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 139.274091][ T8466] ? kmsan_get_metadata+0x116/0x180 [ 139.279265][ T8466] kmsan_copy_to_user+0x81/0x90 [ 139.284089][ T8466] _copy_to_user+0x18e/0x260 [ 139.288661][ T8466] move_addr_to_user+0x3de/0x670 [ 139.293580][ T8466] __sys_getsockname+0x407/0x5e0 [ 139.298495][ T8466] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 139.304631][ T8466] ? __prepare_exit_to_usermode+0x16c/0x560 [ 139.310501][ T8466] __se_sys_getsockname+0x91/0xb0 [ 139.315517][ T8466] __x64_sys_getsockname+0x4a/0x70 [ 139.320604][ T8466] do_syscall_64+0xad/0x160 [ 139.325094][ T8466] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.330958][ T8466] RIP: 0033:0x440219 [ 139.334819][ T8466] Code: Bad RIP value. [ 139.338859][ T8466] RSP: 002b:00007ffe5ee150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000033 [ 139.347242][ T8466] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 139.355186][ T8466] RDX: 0000000020000240 RSI: 0000000020000100 RDI: 0000000000000003 [ 139.363131][ T8466] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 139.371074][ T8466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a20 [ 139.379021][ T8466] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 139.387065][ T8466] Modules linked in: [ 139.390938][ T8466] ---[ end trace 136d94df0dba0fea ]--- [ 139.396373][ T8466] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 139.402934][ T8466] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 139.422781][ T8466] RSP: 0018:ffff8880ba2c7808 EFLAGS: 00010046 [ 139.428912][ T8466] RAX: 0000000000000002 RBX: 0000000005a600ba RCX: 0000000005a600ba [ 139.436862][ T8466] RDX: 0000000000000000 RSI: 00000000000002e0 RDI: ffff8880ba2c78ec [ 139.444856][ T8466] RBP: ffff8880ba2c78b0 R08: ffffea000000000f R09: ffff88812fffa000 [ 139.452805][ T8466] R10: 0000000000000002 R11: ffff88810b06db80 R12: 0000000000000000 [ 139.460801][ T8466] R13: 0000000000000001 R14: 0000000000000002 R15: 0000000000000001 [ 139.468751][ T8466] FS: 0000000001916880(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 139.477686][ T8466] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 139.484243][ T8466] CR2: 0000000020000240 CR3: 00000000ba2e2000 CR4: 00000000001406f0 [ 139.492894][ T8466] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 139.500839][ T8466] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 139.508785][ T8466] Kernel panic - not syncing: Fatal exception [ 139.515398][ T8466] Kernel Offset: disabled [ 139.519713][ T8466] Rebooting in 86400 seconds..