Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 112.473878][ T8449] ===================================================== [ 112.480962][ T8449] BUG: KMSAN: uninit-value in netlink_rcv_skb+0x359/0x650 [ 112.488050][ T8449] CPU: 0 PID: 8449 Comm: syz-executor063 Not tainted 5.8.0-rc5-syzkaller #0 [ 112.496694][ T8449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.506732][ T8449] Call Trace: [ 112.510008][ T8449] dump_stack+0x1df/0x240 [ 112.514332][ T8449] kmsan_report+0xf7/0x1e0 [ 112.518732][ T8449] __msan_warning+0x58/0xa0 [ 112.523217][ T8449] netlink_rcv_skb+0x359/0x650 [ 112.527964][ T8449] ? rtnetlink_bind+0x120/0x120 [ 112.532803][ T8449] rtnetlink_rcv+0x50/0x60 [ 112.537198][ T8449] netlink_unicast+0xf9e/0x1100 [ 112.542033][ T8449] ? rtnetlink_net_exit+0x90/0x90 [ 112.547046][ T8449] netlink_sendmsg+0x1246/0x14d0 [ 112.551972][ T8449] ? netlink_getsockopt+0x1440/0x1440 [ 112.557323][ T8449] kernel_sendmsg+0x433/0x440 [ 112.561982][ T8449] sock_no_sendpage+0x235/0x300 [ 112.566817][ T8449] ? sock_no_mmap+0x30/0x30 [ 112.571297][ T8449] sock_sendpage+0x1e1/0x2c0 [ 112.575873][ T8449] pipe_to_sendpage+0x38c/0x4c0 [ 112.580723][ T8449] ? sock_fasync+0x250/0x250 [ 112.585300][ T8449] __splice_from_pipe+0x565/0xf00 [ 112.590305][ T8449] ? generic_splice_sendpage+0x2d0/0x2d0 [ 112.595927][ T8449] generic_splice_sendpage+0x1d5/0x2d0 [ 112.601368][ T8449] ? iter_file_splice_write+0x1800/0x1800 [ 112.607067][ T8449] direct_splice_actor+0x1fd/0x580 [ 112.612163][ T8449] ? kmsan_get_metadata+0x4f/0x180 [ 112.617253][ T8449] splice_direct_to_actor+0x6b2/0xf50 [ 112.622605][ T8449] ? do_splice_direct+0x580/0x580 [ 112.627617][ T8449] do_splice_direct+0x342/0x580 [ 112.632457][ T8449] do_sendfile+0x101b/0x1d40 [ 112.637039][ T8449] __se_sys_sendfile64+0x2bb/0x360 [ 112.642128][ T8449] ? kmsan_get_metadata+0x4f/0x180 [ 112.647220][ T8449] __x64_sys_sendfile64+0x56/0x70 [ 112.652226][ T8449] do_syscall_64+0xb0/0x150 [ 112.656713][ T8449] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 112.662600][ T8449] RIP: 0033:0x4402b9 [ 112.666467][ T8449] Code: Bad RIP value. [ 112.670510][ T8449] RSP: 002b:00007ffc20ab8e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 112.678910][ T8449] RAX: ffffffffffffffda RBX: 00007ffc20ab8e40 RCX: 00000000004402b9 [ 112.687872][ T8449] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 112.695834][ T8449] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 112.703786][ T8449] R10: 000000000000ddf5 R11: 0000000000000246 R12: 0000000000401b20 [ 112.711740][ T8449] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 112.719796][ T8449] [ 112.722109][ T8449] Uninit was stored to memory at: [ 112.727115][ T8449] kmsan_internal_chain_origin+0xad/0x130 [ 112.732811][ T8449] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 112.738766][ T8449] kmsan_memcpy_metadata+0xb/0x10 [ 112.743768][ T8449] __msan_memcpy+0x43/0x50 [ 112.748162][ T8449] _copy_from_iter_full+0xbfe/0x13b0 [ 112.753433][ T8449] netlink_sendmsg+0xfaa/0x14d0 [ 112.758258][ T8449] kernel_sendmsg+0x433/0x440 [ 112.762926][ T8449] sock_no_sendpage+0x235/0x300 [ 112.767764][ T8449] sock_sendpage+0x1e1/0x2c0 [ 112.772342][ T8449] pipe_to_sendpage+0x38c/0x4c0 [ 112.781350][ T8449] __splice_from_pipe+0x565/0xf00 [ 112.786498][ T8449] generic_splice_sendpage+0x1d5/0x2d0 [ 112.791954][ T8449] direct_splice_actor+0x1fd/0x580 [ 112.797063][ T8449] splice_direct_to_actor+0x6b2/0xf50 [ 112.802421][ T8449] do_splice_direct+0x342/0x580 [ 112.807251][ T8449] do_sendfile+0x101b/0x1d40 [ 112.811819][ T8449] __se_sys_sendfile64+0x2bb/0x360 [ 112.816904][ T8449] __x64_sys_sendfile64+0x56/0x70 [ 112.821908][ T8449] do_syscall_64+0xb0/0x150 [ 112.826388][ T8449] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 112.832249][ T8449] [ 112.834551][ T8449] Uninit was created at: [ 112.838775][ T8449] kmsan_save_stack_with_flags+0x3c/0x90 [ 112.844401][ T8449] kmsan_alloc_page+0xb9/0x180 [ 112.849410][ T8449] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 112.854938][ T8449] alloc_pages_current+0x672/0x990 [ 112.860026][ T8449] push_pipe+0x605/0xb70 [ 112.864252][ T8449] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 112.869948][ T8449] do_splice_to+0x4fc/0x14f0 [ 112.874516][ T8449] splice_direct_to_actor+0x45c/0xf50 [ 112.879887][ T8449] do_splice_direct+0x342/0x580 [ 112.884730][ T8449] do_sendfile+0x101b/0x1d40 [ 112.889308][ T8449] __se_sys_sendfile64+0x2bb/0x360 [ 112.894496][ T8449] __x64_sys_sendfile64+0x56/0x70 [ 112.899504][ T8449] do_syscall_64+0xb0/0x150 [ 112.903990][ T8449] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 112.909850][ T8449] ===================================================== [ 112.916753][ T8449] Disabling lock debugging due to kernel taint [ 112.922879][ T8449] Kernel panic - not syncing: panic_on_warn set ... [ 112.929449][ T8449] CPU: 0 PID: 8449 Comm: syz-executor063 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 112.939480][ T8449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.949532][ T8449] Call Trace: [ 112.952804][ T8449] dump_stack+0x1df/0x240 [ 112.957112][ T8449] panic+0x3d5/0xc3e [ 112.961000][ T8449] kmsan_report+0x1df/0x1e0 [ 112.965483][ T8449] __msan_warning+0x58/0xa0 [ 112.969969][ T8449] netlink_rcv_skb+0x359/0x650 [ 112.974715][ T8449] ? rtnetlink_bind+0x120/0x120 [ 112.979546][ T8449] rtnetlink_rcv+0x50/0x60 [ 112.983942][ T8449] netlink_unicast+0xf9e/0x1100 [ 112.988769][ T8449] ? rtnetlink_net_exit+0x90/0x90 [ 112.993775][ T8449] netlink_sendmsg+0x1246/0x14d0 [ 112.998699][ T8449] ? netlink_getsockopt+0x1440/0x1440 [ 113.004052][ T8449] kernel_sendmsg+0x433/0x440 [ 113.008728][ T8449] sock_no_sendpage+0x235/0x300 [ 113.013563][ T8449] ? sock_no_mmap+0x30/0x30 [ 113.018047][ T8449] sock_sendpage+0x1e1/0x2c0 [ 113.022622][ T8449] pipe_to_sendpage+0x38c/0x4c0 [ 113.027448][ T8449] ? sock_fasync+0x250/0x250 [ 113.032020][ T8449] __splice_from_pipe+0x565/0xf00 [ 113.037042][ T8449] ? generic_splice_sendpage+0x2d0/0x2d0 [ 113.042662][ T8449] generic_splice_sendpage+0x1d5/0x2d0 [ 113.048105][ T8449] ? iter_file_splice_write+0x1800/0x1800 [ 113.053821][ T8449] direct_splice_actor+0x1fd/0x580 [ 113.058912][ T8449] ? kmsan_get_metadata+0x4f/0x180 [ 113.064009][ T8449] splice_direct_to_actor+0x6b2/0xf50 [ 113.069356][ T8449] ? do_splice_direct+0x580/0x580 [ 113.074383][ T8449] do_splice_direct+0x342/0x580 [ 113.079218][ T8449] do_sendfile+0x101b/0x1d40 [ 113.083797][ T8449] __se_sys_sendfile64+0x2bb/0x360 [ 113.088884][ T8449] ? kmsan_get_metadata+0x4f/0x180 [ 113.094005][ T8449] __x64_sys_sendfile64+0x56/0x70 [ 113.099007][ T8449] do_syscall_64+0xb0/0x150 [ 113.103491][ T8449] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 113.109356][ T8449] RIP: 0033:0x4402b9 [ 113.113492][ T8449] Code: Bad RIP value. [ 113.117647][ T8449] RSP: 002b:00007ffc20ab8e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 113.126036][ T8449] RAX: ffffffffffffffda RBX: 00007ffc20ab8e40 RCX: 00000000004402b9 [ 113.133988][ T8449] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 113.141949][ T8449] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 113.149951][ T8449] R10: 000000000000ddf5 R11: 0000000000000246 R12: 0000000000401b20 [ 113.157902][ T8449] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 113.167344][ T8449] Kernel Offset: 0x10e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 113.178959][ T8449] Rebooting in 86400 seconds..