[ 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 '10.128.0.167' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 113.809674][ T8480] ===================================================== [ 113.816636][ T8480] BUG: KMSAN: uninit-value in pfkey_sendmsg+0x54e/0x1d10 [ 113.823634][ T8480] CPU: 0 PID: 8480 Comm: syz-executor747 Not tainted 5.8.0-rc5-syzkaller #0 [ 113.832273][ T8480] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.842301][ T8480] Call Trace: [ 113.845572][ T8480] dump_stack+0x1df/0x240 [ 113.849892][ T8480] kmsan_report+0xf7/0x1e0 [ 113.854288][ T8480] __msan_warning+0x58/0xa0 [ 113.858770][ T8480] pfkey_sendmsg+0x54e/0x1d10 [ 113.863423][ T8480] ? aa_sk_perm+0x83c/0xcd0 [ 113.868513][ T8480] ? aa_sock_msg_perm+0x16d/0x320 [ 113.873519][ T8480] ? kmsan_get_metadata+0x11d/0x180 [ 113.878695][ T8480] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 113.884478][ T8480] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 113.890518][ T8480] ? security_socket_sendmsg+0x1a8/0x200 [ 113.896127][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 113.901212][ T8480] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 113.906997][ T8480] ? pfkey_release+0x570/0x570 [ 113.911736][ T8480] kernel_sendmsg+0x433/0x440 [ 113.916409][ T8480] sock_no_sendpage+0x235/0x300 [ 113.921254][ T8480] ? sock_no_mmap+0x30/0x30 [ 113.925734][ T8480] sock_sendpage+0x1e1/0x2c0 [ 113.930330][ T8480] pipe_to_sendpage+0x38c/0x4c0 [ 113.935202][ T8480] ? sock_fasync+0x250/0x250 [ 113.939774][ T8480] __splice_from_pipe+0x565/0xf00 [ 113.944776][ T8480] ? generic_splice_sendpage+0x2d0/0x2d0 [ 113.950421][ T8480] generic_splice_sendpage+0x1d5/0x2d0 [ 113.955861][ T8480] ? iter_file_splice_write+0x1800/0x1800 [ 113.961559][ T8480] direct_splice_actor+0x1fd/0x580 [ 113.966654][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 113.971761][ T8480] splice_direct_to_actor+0x6b2/0xf50 [ 113.977108][ T8480] ? do_splice_direct+0x580/0x580 [ 113.982117][ T8480] do_splice_direct+0x342/0x580 [ 113.986968][ T8480] do_sendfile+0x101b/0x1d40 [ 113.991548][ T8480] __se_sys_sendfile64+0x2bb/0x360 [ 113.996635][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 114.001723][ T8480] __x64_sys_sendfile64+0x56/0x70 [ 114.006725][ T8480] do_syscall_64+0xb0/0x150 [ 114.015199][ T8480] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 114.021064][ T8480] RIP: 0033:0x4402c9 [ 114.024927][ T8480] Code: Bad RIP value. [ 114.028968][ T8480] RSP: 002b:00007fffe16d4f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 114.037351][ T8480] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 114.045298][ T8480] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 114.053245][ T8480] RBP: 00000000006ca018 R08: 000000000000001c R09: 65732f636f72702f [ 114.061189][ T8480] R10: 00000000000005ee R11: 0000000000000246 R12: 0000000000401b30 [ 114.069137][ T8480] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 [ 114.077105][ T8480] [ 114.079405][ T8480] Uninit was stored to memory at: [ 114.084407][ T8480] kmsan_internal_chain_origin+0xad/0x130 [ 114.090795][ T8480] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 114.096865][ T8480] kmsan_memcpy_metadata+0xb/0x10 [ 114.101869][ T8480] __msan_memcpy+0x43/0x50 [ 114.106263][ T8480] _copy_from_iter_full+0xbfe/0x13b0 [ 114.111523][ T8480] pfkey_sendmsg+0x353/0x1d10 [ 114.116177][ T8480] kernel_sendmsg+0x433/0x440 [ 114.120826][ T8480] sock_no_sendpage+0x235/0x300 [ 114.125652][ T8480] sock_sendpage+0x1e1/0x2c0 [ 114.130232][ T8480] pipe_to_sendpage+0x38c/0x4c0 [ 114.135061][ T8480] __splice_from_pipe+0x565/0xf00 [ 114.140059][ T8480] generic_splice_sendpage+0x1d5/0x2d0 [ 114.145492][ T8480] direct_splice_actor+0x1fd/0x580 [ 114.150574][ T8480] splice_direct_to_actor+0x6b2/0xf50 [ 114.155920][ T8480] do_splice_direct+0x342/0x580 [ 114.160743][ T8480] do_sendfile+0x101b/0x1d40 [ 114.165306][ T8480] __se_sys_sendfile64+0x2bb/0x360 [ 114.170390][ T8480] __x64_sys_sendfile64+0x56/0x70 [ 114.175390][ T8480] do_syscall_64+0xb0/0x150 [ 114.179868][ T8480] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 114.185741][ T8480] [ 114.188041][ T8480] Uninit was created at: [ 114.192271][ T8480] kmsan_save_stack_with_flags+0x3c/0x90 [ 114.197890][ T8480] kmsan_alloc_page+0xb9/0x180 [ 114.202629][ T8480] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 114.208149][ T8480] alloc_pages_current+0x672/0x990 [ 114.213250][ T8480] push_pipe+0x605/0xb70 [ 114.217465][ T8480] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 114.223157][ T8480] do_splice_to+0x4fc/0x14f0 [ 114.227722][ T8480] splice_direct_to_actor+0x45c/0xf50 [ 114.233067][ T8480] do_splice_direct+0x342/0x580 [ 114.237889][ T8480] do_sendfile+0x101b/0x1d40 [ 114.242451][ T8480] __se_sys_sendfile64+0x2bb/0x360 [ 114.248489][ T8480] __x64_sys_sendfile64+0x56/0x70 [ 114.253500][ T8480] do_syscall_64+0xb0/0x150 [ 114.257977][ T8480] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 114.263837][ T8480] ===================================================== [ 114.270757][ T8480] Disabling lock debugging due to kernel taint [ 114.276880][ T8480] Kernel panic - not syncing: panic_on_warn set ... [ 114.283617][ T8480] CPU: 0 PID: 8480 Comm: syz-executor747 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 114.293651][ T8480] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.303745][ T8480] Call Trace: [ 114.307028][ T8480] dump_stack+0x1df/0x240 [ 114.311341][ T8480] panic+0x3d5/0xc3e [ 114.315228][ T8480] kmsan_report+0x1df/0x1e0 [ 114.319713][ T8480] __msan_warning+0x58/0xa0 [ 114.324195][ T8480] pfkey_sendmsg+0x54e/0x1d10 [ 114.328849][ T8480] ? aa_sk_perm+0x83c/0xcd0 [ 114.333334][ T8480] ? aa_sock_msg_perm+0x16d/0x320 [ 114.338336][ T8480] ? kmsan_get_metadata+0x11d/0x180 [ 114.343526][ T8480] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 114.349312][ T8480] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 114.355394][ T8480] ? security_socket_sendmsg+0x1a8/0x200 [ 114.361002][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 114.366090][ T8480] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 114.371871][ T8480] ? pfkey_release+0x570/0x570 [ 114.376611][ T8480] kernel_sendmsg+0x433/0x440 [ 114.381268][ T8480] sock_no_sendpage+0x235/0x300 [ 114.386117][ T8480] ? sock_no_mmap+0x30/0x30 [ 114.390598][ T8480] sock_sendpage+0x1e1/0x2c0 [ 114.395188][ T8480] pipe_to_sendpage+0x38c/0x4c0 [ 114.400015][ T8480] ? sock_fasync+0x250/0x250 [ 114.404591][ T8480] __splice_from_pipe+0x565/0xf00 [ 114.409593][ T8480] ? generic_splice_sendpage+0x2d0/0x2d0 [ 114.415210][ T8480] generic_splice_sendpage+0x1d5/0x2d0 [ 114.420649][ T8480] ? iter_file_splice_write+0x1800/0x1800 [ 114.426344][ T8480] direct_splice_actor+0x1fd/0x580 [ 114.431451][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 114.436555][ T8480] splice_direct_to_actor+0x6b2/0xf50 [ 114.441903][ T8480] ? do_splice_direct+0x580/0x580 [ 114.446920][ T8480] do_splice_direct+0x342/0x580 [ 114.451758][ T8480] do_sendfile+0x101b/0x1d40 [ 114.457292][ T8480] __se_sys_sendfile64+0x2bb/0x360 [ 114.462377][ T8480] ? kmsan_get_metadata+0x4f/0x180 [ 114.467464][ T8480] __x64_sys_sendfile64+0x56/0x70 [ 114.472464][ T8480] do_syscall_64+0xb0/0x150 [ 114.476944][ T8480] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 114.482849][ T8480] RIP: 0033:0x4402c9 [ 114.486716][ T8480] Code: Bad RIP value. [ 114.490782][ T8480] RSP: 002b:00007fffe16d4f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 114.499169][ T8480] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402c9 [ 114.507118][ T8480] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 114.515123][ T8480] RBP: 00000000006ca018 R08: 000000000000001c R09: 65732f636f72702f [ 114.523117][ T8480] R10: 00000000000005ee R11: 0000000000000246 R12: 0000000000401b30 [ 114.531153][ T8480] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 [ 114.540333][ T8480] Kernel Offset: 0x21c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 114.551939][ T8480] Rebooting in 86400 seconds..