[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 117.209377][ T8445] ===================================================== [ 117.216341][ T8445] BUG: KMSAN: uninit-value in rdma_nl_rcv+0x396/0x1060 [ 117.223192][ T8445] CPU: 0 PID: 8445 Comm: syz-executor115 Not tainted 5.8.0-rc5-syzkaller #0 [ 117.231857][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.241890][ T8445] Call Trace: [ 117.245161][ T8445] dump_stack+0x1df/0x240 [ 117.249471][ T8445] kmsan_report+0xf7/0x1e0 [ 117.253865][ T8445] __msan_warning+0x58/0xa0 [ 117.258348][ T8445] rdma_nl_rcv+0x396/0x1060 [ 117.262829][ T8445] ? __netlink_lookup+0x758/0x810 [ 117.267842][ T8445] netlink_unicast+0xf9e/0x1100 [ 117.272681][ T8445] ? rdma_nl_net_init+0x1e0/0x1e0 [ 117.277697][ T8445] netlink_sendmsg+0x1246/0x14d0 [ 117.282653][ T8445] ? netlink_getsockopt+0x1440/0x1440 [ 117.288010][ T8445] kernel_sendmsg+0x433/0x440 [ 117.292677][ T8445] sock_no_sendpage+0x235/0x300 [ 117.297517][ T8445] ? sock_no_mmap+0x30/0x30 [ 117.301997][ T8445] sock_sendpage+0x1e1/0x2c0 [ 117.306576][ T8445] pipe_to_sendpage+0x38c/0x4c0 [ 117.311413][ T8445] ? sock_fasync+0x250/0x250 [ 117.315985][ T8445] __splice_from_pipe+0x565/0xf00 [ 117.320986][ T8445] ? generic_splice_sendpage+0x2d0/0x2d0 [ 117.326603][ T8445] generic_splice_sendpage+0x1d5/0x2d0 [ 117.332038][ T8445] ? iter_file_splice_write+0x1800/0x1800 [ 117.337736][ T8445] direct_splice_actor+0x1fd/0x580 [ 117.342825][ T8445] ? kmsan_get_metadata+0x4f/0x180 [ 117.347913][ T8445] splice_direct_to_actor+0x6b2/0xf50 [ 117.353258][ T8445] ? do_splice_direct+0x580/0x580 [ 117.358271][ T8445] do_splice_direct+0x342/0x580 [ 117.363102][ T8445] do_sendfile+0x101b/0x1d40 [ 117.367680][ T8445] __se_sys_sendfile64+0x2bb/0x360 [ 117.372884][ T8445] ? kmsan_get_metadata+0x4f/0x180 [ 117.377986][ T8445] __x64_sys_sendfile64+0x56/0x70 [ 117.383002][ T8445] do_syscall_64+0xb0/0x150 [ 117.387496][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 117.393454][ T8445] RIP: 0033:0x4402b9 [ 117.397338][ T8445] Code: Bad RIP value. [ 117.401467][ T8445] RSP: 002b:00007fff43bc8c28 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 117.410084][ T8445] RAX: ffffffffffffffda RBX: 00007fff43bc8c30 RCX: 00000000004402b9 [ 117.418219][ T8445] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 117.426169][ T8445] RBP: 00000000006ca018 R08: 68742f636f72702f R09: 68742f636f72702f [ 117.434211][ T8445] R10: 0000000000000800 R11: 0000000000000246 R12: 0000000000401b20 [ 117.442170][ T8445] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 117.450122][ T8445] [ 117.452423][ T8445] Uninit was stored to memory at: [ 117.457428][ T8445] kmsan_internal_chain_origin+0xad/0x130 [ 117.463119][ T8445] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 117.469068][ T8445] kmsan_memcpy_metadata+0xb/0x10 [ 117.474065][ T8445] __msan_memcpy+0x43/0x50 [ 117.478455][ T8445] _copy_from_iter_full+0xbfe/0x13b0 [ 117.483713][ T8445] netlink_sendmsg+0xfaa/0x14d0 [ 117.488536][ T8445] kernel_sendmsg+0x433/0x440 [ 117.493195][ T8445] sock_no_sendpage+0x235/0x300 [ 117.498030][ T8445] sock_sendpage+0x1e1/0x2c0 [ 117.502596][ T8445] pipe_to_sendpage+0x38c/0x4c0 [ 117.507419][ T8445] __splice_from_pipe+0x565/0xf00 [ 117.512414][ T8445] generic_splice_sendpage+0x1d5/0x2d0 [ 117.517848][ T8445] direct_splice_actor+0x1fd/0x580 [ 117.522933][ T8445] splice_direct_to_actor+0x6b2/0xf50 [ 117.528275][ T8445] do_splice_direct+0x342/0x580 [ 117.533100][ T8445] do_sendfile+0x101b/0x1d40 [ 117.537687][ T8445] __se_sys_sendfile64+0x2bb/0x360 [ 117.542783][ T8445] __x64_sys_sendfile64+0x56/0x70 [ 117.547795][ T8445] do_syscall_64+0xb0/0x150 [ 117.552290][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 117.558153][ T8445] [ 117.560453][ T8445] Uninit was created at: [ 117.564675][ T8445] kmsan_save_stack_with_flags+0x3c/0x90 [ 117.570277][ T8445] kmsan_alloc_page+0xb9/0x180 [ 117.575013][ T8445] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 117.580529][ T8445] alloc_pages_current+0x672/0x990 [ 117.585611][ T8445] push_pipe+0x605/0xb70 [ 117.589876][ T8445] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 117.595572][ T8445] do_splice_to+0x4fc/0x14f0 [ 117.600133][ T8445] splice_direct_to_actor+0x45c/0xf50 [ 117.605475][ T8445] do_splice_direct+0x342/0x580 [ 117.610311][ T8445] do_sendfile+0x101b/0x1d40 [ 117.614877][ T8445] __se_sys_sendfile64+0x2bb/0x360 [ 117.619959][ T8445] __x64_sys_sendfile64+0x56/0x70 [ 117.624999][ T8445] do_syscall_64+0xb0/0x150 [ 117.629607][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 117.635535][ T8445] ===================================================== [ 117.642448][ T8445] Disabling lock debugging due to kernel taint [ 117.648579][ T8445] Kernel panic - not syncing: panic_on_warn set ... [ 117.655148][ T8445] CPU: 0 PID: 8445 Comm: syz-executor115 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 117.665184][ T8445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.675214][ T8445] Call Trace: [ 117.678483][ T8445] dump_stack+0x1df/0x240 [ 117.682791][ T8445] panic+0x3d5/0xc3e [ 117.686686][ T8445] kmsan_report+0x1df/0x1e0 [ 117.691176][ T8445] __msan_warning+0x58/0xa0 [ 117.695666][ T8445] rdma_nl_rcv+0x396/0x1060 [ 117.700151][ T8445] ? __netlink_lookup+0x758/0x810 [ 117.705256][ T8445] netlink_unicast+0xf9e/0x1100 [ 117.710094][ T8445] ? rdma_nl_net_init+0x1e0/0x1e0 [ 117.715463][ T8445] netlink_sendmsg+0x1246/0x14d0 [ 117.720388][ T8445] ? netlink_getsockopt+0x1440/0x1440 [ 117.725738][ T8445] kernel_sendmsg+0x433/0x440 [ 117.730393][ T8445] sock_no_sendpage+0x235/0x300 [ 117.735230][ T8445] ? sock_no_mmap+0x30/0x30 [ 117.739708][ T8445] sock_sendpage+0x1e1/0x2c0 [ 117.744277][ T8445] pipe_to_sendpage+0x38c/0x4c0 [ 117.749099][ T8445] ? sock_fasync+0x250/0x250 [ 117.753671][ T8445] __splice_from_pipe+0x565/0xf00 [ 117.758670][ T8445] ? generic_splice_sendpage+0x2d0/0x2d0 [ 117.764285][ T8445] generic_splice_sendpage+0x1d5/0x2d0 [ 117.769721][ T8445] ? iter_file_splice_write+0x1800/0x1800 [ 117.775422][ T8445] direct_splice_actor+0x1fd/0x580 [ 117.780511][ T8445] ? kmsan_get_metadata+0x4f/0x180 [ 117.785620][ T8445] splice_direct_to_actor+0x6b2/0xf50 [ 117.791000][ T8445] ? do_splice_direct+0x580/0x580 [ 117.796026][ T8445] do_splice_direct+0x342/0x580 [ 117.800860][ T8445] do_sendfile+0x101b/0x1d40 [ 117.805440][ T8445] __se_sys_sendfile64+0x2bb/0x360 [ 117.810525][ T8445] ? kmsan_get_metadata+0x4f/0x180 [ 117.815616][ T8445] __x64_sys_sendfile64+0x56/0x70 [ 117.820619][ T8445] do_syscall_64+0xb0/0x150 [ 117.825097][ T8445] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 117.830963][ T8445] RIP: 0033:0x4402b9 [ 117.834827][ T8445] Code: Bad RIP value. [ 117.838864][ T8445] RSP: 002b:00007fff43bc8c28 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 117.847256][ T8445] RAX: ffffffffffffffda RBX: 00007fff43bc8c30 RCX: 00000000004402b9 [ 117.855203][ T8445] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 [ 117.863149][ T8445] RBP: 00000000006ca018 R08: 68742f636f72702f R09: 68742f636f72702f [ 117.871150][ T8445] R10: 0000000000000800 R11: 0000000000000246 R12: 0000000000401b20 [ 117.879169][ T8445] R13: 0000000000401bb0 R14: 0000000000000000 R15: 0000000000000000 [ 117.888264][ T8445] Kernel Offset: 0x2e800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 117.899871][ T8445] Rebooting in 86400 seconds..