Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 147.758797][ T8453] ===================================================== [ 147.766023][ T8453] BUG: KMSAN: uninit-value in sha256_update+0x8bf0/0x9090 [ 147.773175][ T8453] CPU: 0 PID: 8453 Comm: syz-executor191 Not tainted 5.8.0-rc5-syzkaller #0 [ 147.781856][ T8453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.791898][ T8453] Call Trace: [ 147.795181][ T8453] dump_stack+0x1df/0x240 [ 147.799505][ T8453] kmsan_report+0xf7/0x1e0 [ 147.803924][ T8453] __msan_warning+0x58/0xa0 [ 147.808420][ T8453] sha256_update+0x8bf0/0x9090 [ 147.813809][ T8453] ? kmsan_task_context_state+0x47/0x90 [ 147.819354][ T8453] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 147.825427][ T8453] ? update_stack_state+0xa18/0xb40 [ 147.830642][ T8453] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 147.836720][ T8453] ? is_module_text_address+0x4d/0x2a0 [ 147.842179][ T8453] ? unwind_get_return_address+0x8c/0x130 [ 147.847913][ T8453] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 147.853985][ T8453] ? arch_stack_walk+0x2a2/0x3e0 [ 147.858915][ T8453] ? stack_trace_save+0x1a0/0x1a0 [ 147.863944][ T8453] crypto_sha256_update+0x8b/0xb0 [ 147.868952][ T8453] ? sha1_base_init+0x180/0x180 [ 147.873791][ T8453] crypto_shash_update+0x4e9/0x550 [ 147.878889][ T8453] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 147.885049][ T8453] ? crypto_hash_walk_first+0x1fd/0x360 [ 147.890581][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 147.895675][ T8453] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.901465][ T8453] shash_async_update+0x113/0x1d0 [ 147.906488][ T8453] ? shash_async_init+0x1e0/0x1e0 [ 147.911505][ T8453] hash_sendpage+0x8ef/0xdf0 [ 147.916089][ T8453] ? hash_recvmsg+0xd30/0xd30 [ 147.920763][ T8453] sock_sendpage+0x1e1/0x2c0 [ 147.925367][ T8453] pipe_to_sendpage+0x38c/0x4c0 [ 147.930205][ T8453] ? sock_fasync+0x250/0x250 [ 147.934792][ T8453] __splice_from_pipe+0x565/0xf00 [ 147.939818][ T8453] ? generic_splice_sendpage+0x2d0/0x2d0 [ 147.945473][ T8453] generic_splice_sendpage+0x1d5/0x2d0 [ 147.950939][ T8453] ? iter_file_splice_write+0x1800/0x1800 [ 147.956682][ T8453] direct_splice_actor+0x1fd/0x580 [ 147.961821][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 147.966927][ T8453] splice_direct_to_actor+0x6b2/0xf50 [ 147.972282][ T8453] ? do_splice_direct+0x580/0x580 [ 147.977318][ T8453] do_splice_direct+0x342/0x580 [ 147.982178][ T8453] do_sendfile+0x101b/0x1d40 [ 147.986789][ T8453] __se_sys_sendfile64+0x2bb/0x360 [ 147.991900][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 147.997036][ T8453] __x64_sys_sendfile64+0x56/0x70 [ 148.002083][ T8453] do_syscall_64+0xb0/0x150 [ 148.006571][ T8453] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.012798][ T8453] RIP: 0033:0x4403d9 [ 148.016668][ T8453] Code: Bad RIP value. [ 148.020712][ T8453] RSP: 002b:00007ffd7cabbf48 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 148.029105][ T8453] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403d9 [ 148.037076][ T8453] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 148.045045][ T8453] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 148.053024][ T8453] R10: 0000000000000fff R11: 0000000000000246 R12: 0000000000401c40 [ 148.060984][ T8453] R13: 0000000000401cd0 R14: 0000000000000000 R15: 0000000000000000 [ 148.068952][ T8453] [ 148.071271][ T8453] Uninit was created at: [ 148.075496][ T8453] kmsan_save_stack_with_flags+0x3c/0x90 [ 148.081112][ T8453] kmsan_alloc_page+0xb9/0x180 [ 148.085865][ T8453] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 148.091389][ T8453] alloc_pages_current+0x672/0x990 [ 148.096487][ T8453] push_pipe+0x605/0xb70 [ 148.100727][ T8453] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 148.106426][ T8453] do_splice_to+0x4fc/0x14f0 [ 148.110993][ T8453] splice_direct_to_actor+0x45c/0xf50 [ 148.116361][ T8453] do_splice_direct+0x342/0x580 [ 148.121202][ T8453] do_sendfile+0x101b/0x1d40 [ 148.125772][ T8453] __se_sys_sendfile64+0x2bb/0x360 [ 148.130865][ T8453] __x64_sys_sendfile64+0x56/0x70 [ 148.135893][ T8453] do_syscall_64+0xb0/0x150 [ 148.140380][ T8453] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.146246][ T8453] ===================================================== [ 148.153170][ T8453] Disabling lock debugging due to kernel taint [ 148.159317][ T8453] Kernel panic - not syncing: panic_on_warn set ... [ 148.165895][ T8453] CPU: 0 PID: 8453 Comm: syz-executor191 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 148.175937][ T8453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.185999][ T8453] Call Trace: [ 148.189284][ T8453] dump_stack+0x1df/0x240 [ 148.193610][ T8453] panic+0x3d5/0xc3e [ 148.197517][ T8453] kmsan_report+0x1df/0x1e0 [ 148.202016][ T8453] __msan_warning+0x58/0xa0 [ 148.206510][ T8453] sha256_update+0x8bf0/0x9090 [ 148.211273][ T8453] ? kmsan_task_context_state+0x47/0x90 [ 148.216815][ T8453] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 148.222882][ T8453] ? update_stack_state+0xa18/0xb40 [ 148.228076][ T8453] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 148.234176][ T8453] ? is_module_text_address+0x4d/0x2a0 [ 148.239644][ T8453] ? unwind_get_return_address+0x8c/0x130 [ 148.245372][ T8453] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.251446][ T8453] ? arch_stack_walk+0x2a2/0x3e0 [ 148.256374][ T8453] ? stack_trace_save+0x1a0/0x1a0 [ 148.261404][ T8453] crypto_sha256_update+0x8b/0xb0 [ 148.266423][ T8453] ? sha1_base_init+0x180/0x180 [ 148.271266][ T8453] crypto_shash_update+0x4e9/0x550 [ 148.276369][ T8453] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 148.282536][ T8453] ? crypto_hash_walk_first+0x1fd/0x360 [ 148.288081][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 148.293185][ T8453] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.298984][ T8453] shash_async_update+0x113/0x1d0 [ 148.304005][ T8453] ? shash_async_init+0x1e0/0x1e0 [ 148.309029][ T8453] hash_sendpage+0x8ef/0xdf0 [ 148.313618][ T8453] ? hash_recvmsg+0xd30/0xd30 [ 148.318294][ T8453] sock_sendpage+0x1e1/0x2c0 [ 148.322887][ T8453] pipe_to_sendpage+0x38c/0x4c0 [ 148.327728][ T8453] ? sock_fasync+0x250/0x250 [ 148.332319][ T8453] __splice_from_pipe+0x565/0xf00 [ 148.337336][ T8453] ? generic_splice_sendpage+0x2d0/0x2d0 [ 148.342984][ T8453] generic_splice_sendpage+0x1d5/0x2d0 [ 148.348451][ T8453] ? iter_file_splice_write+0x1800/0x1800 [ 148.354193][ T8453] direct_splice_actor+0x1fd/0x580 [ 148.359318][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 148.364441][ T8453] splice_direct_to_actor+0x6b2/0xf50 [ 148.369797][ T8453] ? do_splice_direct+0x580/0x580 [ 148.374852][ T8453] do_splice_direct+0x342/0x580 [ 148.379722][ T8453] do_sendfile+0x101b/0x1d40 [ 148.384330][ T8453] __se_sys_sendfile64+0x2bb/0x360 [ 148.389432][ T8453] ? kmsan_get_metadata+0x4f/0x180 [ 148.394591][ T8453] __x64_sys_sendfile64+0x56/0x70 [ 148.399610][ T8453] do_syscall_64+0xb0/0x150 [ 148.404137][ T8453] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 148.410025][ T8453] RIP: 0033:0x4403d9 [ 148.413902][ T8453] Code: Bad RIP value. [ 148.417961][ T8453] RSP: 002b:00007ffd7cabbf48 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 148.426360][ T8453] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403d9 [ 148.434321][ T8453] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 148.442295][ T8453] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 148.451918][ T8453] R10: 0000000000000fff R11: 0000000000000246 R12: 0000000000401c40 [ 148.459881][ T8453] R13: 0000000000401cd0 R14: 0000000000000000 R15: 0000000000000000 [ 148.469012][ T8453] Kernel Offset: 0x18a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 148.480732][ T8453] Rebooting in 86400 seconds..