Warning: Permanently added '10.128.0.208' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 143.655658][ T8460] ===================================================== [ 143.663349][ T8460] BUG: KMSAN: uninit-value in netlink_rcv_skb+0x359/0x650 [ 143.670492][ T8460] CPU: 1 PID: 8460 Comm: syz-executor915 Not tainted 5.8.0-rc5-syzkaller #0 [ 143.679145][ T8460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 143.689196][ T8460] Call Trace: [ 143.692622][ T8460] dump_stack+0x1df/0x240 [ 143.696946][ T8460] kmsan_report+0xf7/0x1e0 [ 143.701372][ T8460] __msan_warning+0x58/0xa0 [ 143.705873][ T8460] netlink_rcv_skb+0x359/0x650 [ 143.710631][ T8460] ? rtnetlink_bind+0x120/0x120 [ 143.715477][ T8460] rtnetlink_rcv+0x50/0x60 [ 143.719885][ T8460] netlink_unicast+0xf9e/0x1100 [ 143.724729][ T8460] ? rtnetlink_net_exit+0x90/0x90 [ 143.729752][ T8460] netlink_sendmsg+0x1246/0x14d0 [ 143.734693][ T8460] ? netlink_getsockopt+0x1440/0x1440 [ 143.740062][ T8460] kernel_sendmsg+0x433/0x440 [ 143.744753][ T8460] sock_no_sendpage+0x235/0x300 [ 143.749606][ T8460] ? sock_no_mmap+0x30/0x30 [ 143.754097][ T8460] sock_sendpage+0x1e1/0x2c0 [ 143.758702][ T8460] pipe_to_sendpage+0x38c/0x4c0 [ 143.763543][ T8460] ? sock_fasync+0x250/0x250 [ 143.768133][ T8460] __splice_from_pipe+0x565/0xf00 [ 143.773152][ T8460] ? generic_splice_sendpage+0x2d0/0x2d0 [ 143.779424][ T8460] generic_splice_sendpage+0x1d5/0x2d0 [ 143.784891][ T8460] ? iter_file_splice_write+0x1800/0x1800 [ 143.790602][ T8460] direct_splice_actor+0x1fd/0x580 [ 143.795713][ T8460] ? kmsan_get_metadata+0x4f/0x180 [ 143.800823][ T8460] splice_direct_to_actor+0x6b2/0xf50 [ 143.806204][ T8460] ? do_splice_direct+0x580/0x580 [ 143.811252][ T8460] do_splice_direct+0x342/0x580 [ 143.816107][ T8460] do_sendfile+0x101b/0x1d40 [ 143.820708][ T8460] __se_sys_sendfile64+0x2bb/0x360 [ 143.825831][ T8460] ? kmsan_get_metadata+0x4f/0x180 [ 143.830950][ T8460] __x64_sys_sendfile64+0x56/0x70 [ 143.835974][ T8460] do_syscall_64+0xb0/0x150 [ 143.840488][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 143.846386][ T8460] RIP: 0033:0x4402b9 [ 143.850277][ T8460] Code: Bad RIP value. [ 143.854397][ T8460] RSP: 002b:00007ffc772f6938 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 143.863168][ T8460] RAX: ffffffffffffffda RBX: 00007ffc772f6940 RCX: 00000000004402b9 [ 143.871130][ T8460] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 143.879094][ T8460] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 143.887053][ T8460] R10: 000000000000ddf5 R11: 0000000000000246 R12: 0000000000401b20 [ 143.895023][ T8460] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 143.903006][ T8460] [ 143.905335][ T8460] Uninit was stored to memory at: [ 143.910371][ T8460] kmsan_internal_chain_origin+0xad/0x130 [ 143.916084][ T8460] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 143.922074][ T8460] kmsan_memcpy_metadata+0xb/0x10 [ 143.927093][ T8460] __msan_memcpy+0x43/0x50 [ 143.931506][ T8460] _copy_from_iter_full+0xbfe/0x13b0 [ 143.936803][ T8460] netlink_sendmsg+0xfaa/0x14d0 [ 143.941652][ T8460] kernel_sendmsg+0x433/0x440 [ 143.946313][ T8460] sock_no_sendpage+0x235/0x300 [ 143.951150][ T8460] sock_sendpage+0x1e1/0x2c0 [ 143.955737][ T8460] pipe_to_sendpage+0x38c/0x4c0 [ 143.960612][ T8460] __splice_from_pipe+0x565/0xf00 [ 143.965628][ T8460] generic_splice_sendpage+0x1d5/0x2d0 [ 143.971080][ T8460] direct_splice_actor+0x1fd/0x580 [ 143.976204][ T8460] splice_direct_to_actor+0x6b2/0xf50 [ 143.981594][ T8460] do_splice_direct+0x342/0x580 [ 143.986439][ T8460] do_sendfile+0x101b/0x1d40 [ 143.991018][ T8460] __se_sys_sendfile64+0x2bb/0x360 [ 143.996111][ T8460] __x64_sys_sendfile64+0x56/0x70 [ 144.001119][ T8460] do_syscall_64+0xb0/0x150 [ 144.005603][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 144.011468][ T8460] [ 144.013784][ T8460] Uninit was created at: [ 144.018015][ T8460] kmsan_save_stack_with_flags+0x3c/0x90 [ 144.023651][ T8460] kmsan_alloc_page+0xb9/0x180 [ 144.028399][ T8460] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 144.033932][ T8460] alloc_pages_current+0x672/0x990 [ 144.039050][ T8460] push_pipe+0x605/0xb70 [ 144.043282][ T8460] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 144.049056][ T8460] do_splice_to+0x4fc/0x14f0 [ 144.053660][ T8460] splice_direct_to_actor+0x45c/0xf50 [ 144.059025][ T8460] do_splice_direct+0x342/0x580 [ 144.063880][ T8460] do_sendfile+0x101b/0x1d40 [ 144.068478][ T8460] __se_sys_sendfile64+0x2bb/0x360 [ 144.073592][ T8460] __x64_sys_sendfile64+0x56/0x70 [ 144.078613][ T8460] do_syscall_64+0xb0/0x150 [ 144.087049][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 144.092934][ T8460] ===================================================== [ 144.099848][ T8460] Disabling lock debugging due to kernel taint [ 144.105990][ T8460] Kernel panic - not syncing: panic_on_warn set ... [ 144.112569][ T8460] CPU: 1 PID: 8460 Comm: syz-executor915 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 144.122618][ T8460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 144.132708][ T8460] Call Trace: [ 144.136004][ T8460] dump_stack+0x1df/0x240 [ 144.140333][ T8460] panic+0x3d5/0xc3e [ 144.144266][ T8460] kmsan_report+0x1df/0x1e0 [ 144.148757][ T8460] __msan_warning+0x58/0xa0 [ 144.153251][ T8460] netlink_rcv_skb+0x359/0x650 [ 144.158000][ T8460] ? rtnetlink_bind+0x120/0x120 [ 144.162859][ T8460] rtnetlink_rcv+0x50/0x60 [ 144.167277][ T8460] netlink_unicast+0xf9e/0x1100 [ 144.172131][ T8460] ? rtnetlink_net_exit+0x90/0x90 [ 144.177852][ T8460] netlink_sendmsg+0x1246/0x14d0 [ 144.182811][ T8460] ? netlink_getsockopt+0x1440/0x1440 [ 144.189054][ T8460] kernel_sendmsg+0x433/0x440 [ 144.193728][ T8460] sock_no_sendpage+0x235/0x300 [ 144.198580][ T8460] ? sock_no_mmap+0x30/0x30 [ 144.203073][ T8460] sock_sendpage+0x1e1/0x2c0 [ 144.207680][ T8460] pipe_to_sendpage+0x38c/0x4c0 [ 144.212533][ T8460] ? sock_fasync+0x250/0x250 [ 144.217151][ T8460] __splice_from_pipe+0x565/0xf00 [ 144.222199][ T8460] ? generic_splice_sendpage+0x2d0/0x2d0 [ 144.227874][ T8460] generic_splice_sendpage+0x1d5/0x2d0 [ 144.233340][ T8460] ? iter_file_splice_write+0x1800/0x1800 [ 144.239059][ T8460] direct_splice_actor+0x1fd/0x580 [ 144.244170][ T8460] ? kmsan_get_metadata+0x4f/0x180 [ 144.249291][ T8460] splice_direct_to_actor+0x6b2/0xf50 [ 144.254668][ T8460] ? do_splice_direct+0x580/0x580 [ 144.259700][ T8460] do_splice_direct+0x342/0x580 [ 144.264550][ T8460] do_sendfile+0x101b/0x1d40 [ 144.269166][ T8460] __se_sys_sendfile64+0x2bb/0x360 [ 144.274278][ T8460] ? kmsan_get_metadata+0x4f/0x180 [ 144.279391][ T8460] __x64_sys_sendfile64+0x56/0x70 [ 144.284407][ T8460] do_syscall_64+0xb0/0x150 [ 144.288900][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 144.294789][ T8460] RIP: 0033:0x4402b9 [ 144.298677][ T8460] Code: Bad RIP value. [ 144.312465][ T8460] RSP: 002b:00007ffc772f6938 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 144.320868][ T8460] RAX: ffffffffffffffda RBX: 00007ffc772f6940 RCX: 00000000004402b9 [ 144.328826][ T8460] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 144.338102][ T8460] RBP: 00000000006ca018 R08: 65732f636f72702f R09: 65732f636f72702f [ 144.346080][ T8460] R10: 000000000000ddf5 R11: 0000000000000246 R12: 0000000000401b20 [ 144.354053][ T8460] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 144.363307][ T8460] Kernel Offset: 0x13c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 144.374931][ T8460] Rebooting in 86400 seconds..