Warning: Permanently added '10.128.1.24' (ECDSA) to the list of known hosts. executing program [ 101.662775][ T32] audit: type=1400 audit(1595334264.064:8): avc: denied { execmem } for pid=8463 comm="syz-executor023" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 101.672900][ T8463] ===================================================== [ 101.690375][ T8463] BUG: KMSAN: uninit-value in selinux_netlink_send+0x413/0xba0 [ 101.697991][ T8463] CPU: 0 PID: 8463 Comm: syz-executor023 Not tainted 5.8.0-rc5-syzkaller #0 [ 101.706690][ T8463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.716760][ T8463] Call Trace: [ 101.720050][ T8463] dump_stack+0x1df/0x240 [ 101.724393][ T8463] kmsan_report+0xf7/0x1e0 [ 101.728808][ T8463] __msan_warning+0x58/0xa0 [ 101.733312][ T8463] selinux_netlink_send+0x413/0xba0 [ 101.738511][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 101.743698][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 101.748896][ T8463] ? selinux_vm_enough_memory+0x1a0/0x1a0 [ 101.754607][ T8463] security_netlink_send+0xef/0x1e0 [ 101.759812][ T8463] netlink_sendmsg+0x1008/0x14d0 [ 101.764762][ T8463] ? netlink_getsockopt+0x1440/0x1440 [ 101.770137][ T8463] kernel_sendmsg+0x433/0x440 [ 101.774826][ T8463] sock_no_sendpage+0x235/0x300 [ 101.779692][ T8463] ? sock_no_mmap+0x30/0x30 [ 101.784202][ T8463] sock_sendpage+0x1e1/0x2c0 [ 101.788792][ T8463] pipe_to_sendpage+0x38c/0x4c0 [ 101.793645][ T8463] ? sock_fasync+0x250/0x250 [ 101.798240][ T8463] __splice_from_pipe+0x565/0xf00 [ 101.803276][ T8463] ? generic_splice_sendpage+0x2d0/0x2d0 [ 101.808947][ T8463] generic_splice_sendpage+0x1d5/0x2d0 [ 101.814438][ T8463] ? iter_file_splice_write+0x1800/0x1800 [ 101.820160][ T8463] direct_splice_actor+0x1fd/0x580 [ 101.825270][ T8463] ? kmsan_get_metadata+0x4f/0x180 [ 101.830375][ T8463] splice_direct_to_actor+0x6b2/0xf50 [ 101.835749][ T8463] ? do_splice_direct+0x580/0x580 [ 101.840797][ T8463] do_splice_direct+0x342/0x580 [ 101.845668][ T8463] do_sendfile+0x101b/0x1d40 [ 101.850274][ T8463] __se_compat_sys_sendfile+0x301/0x3c0 [ 101.855816][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 101.861005][ T8463] ? __ia32_sys_sendfile64+0x70/0x70 [ 101.866281][ T8463] __ia32_compat_sys_sendfile+0x56/0x70 [ 101.871818][ T8463] __do_fast_syscall_32+0x2aa/0x400 [ 101.877016][ T8463] do_fast_syscall_32+0x6b/0xd0 [ 101.881857][ T8463] do_SYSENTER_32+0x73/0x90 [ 101.886353][ T8463] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 101.892684][ T8463] RIP: 0023:0xf7fc5549 [ 101.896727][ T8463] Code: Bad RIP value. [ 101.900771][ T8463] RSP: 002b:00000000ffd24adc EFLAGS: 00000296 ORIG_RAX: 00000000000000bb [ 101.909191][ T8463] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000003 [ 101.917327][ T8463] RDX: 0000000000000000 RSI: 00000000000009af RDI: 0000000000000010 [ 101.925297][ T8463] RBP: 0000000000080803 R08: 0000000000000000 R09: 0000000000000000 [ 101.933258][ T8463] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 101.941230][ T8463] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 101.949213][ T8463] [ 101.951525][ T8463] Uninit was stored to memory at: [ 101.956548][ T8463] kmsan_internal_chain_origin+0xad/0x130 [ 101.962249][ T8463] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 101.968217][ T8463] kmsan_memcpy_metadata+0xb/0x10 [ 101.973226][ T8463] __msan_memcpy+0x43/0x50 [ 101.977641][ T8463] _copy_from_iter_full+0xbfe/0x13b0 [ 101.982922][ T8463] netlink_sendmsg+0xfaa/0x14d0 [ 101.987756][ T8463] kernel_sendmsg+0x433/0x440 [ 101.992421][ T8463] sock_no_sendpage+0x235/0x300 [ 101.997264][ T8463] sock_sendpage+0x1e1/0x2c0 [ 102.001847][ T8463] pipe_to_sendpage+0x38c/0x4c0 [ 102.006913][ T8463] __splice_from_pipe+0x565/0xf00 [ 102.011930][ T8463] generic_splice_sendpage+0x1d5/0x2d0 [ 102.017381][ T8463] direct_splice_actor+0x1fd/0x580 [ 102.022478][ T8463] splice_direct_to_actor+0x6b2/0xf50 [ 102.029578][ T8463] do_splice_direct+0x342/0x580 [ 102.034414][ T8463] do_sendfile+0x101b/0x1d40 [ 102.038985][ T8463] __se_compat_sys_sendfile+0x301/0x3c0 [ 102.044512][ T8463] __ia32_compat_sys_sendfile+0x56/0x70 [ 102.050138][ T8463] __do_fast_syscall_32+0x2aa/0x400 [ 102.055325][ T8463] do_fast_syscall_32+0x6b/0xd0 [ 102.061214][ T8463] do_SYSENTER_32+0x73/0x90 [ 102.065702][ T8463] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 102.072004][ T8463] [ 102.074330][ T8463] Uninit was created at: [ 102.078558][ T8463] kmsan_save_stack_with_flags+0x3c/0x90 [ 102.084177][ T8463] kmsan_alloc_page+0xb9/0x180 [ 102.088920][ T8463] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 102.094452][ T8463] alloc_pages_current+0x672/0x990 [ 102.099561][ T8463] push_pipe+0x605/0xb70 [ 102.103822][ T8463] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 102.109562][ T8463] do_splice_to+0x4fc/0x14f0 [ 102.114144][ T8463] splice_direct_to_actor+0x45c/0xf50 [ 102.119516][ T8463] do_splice_direct+0x342/0x580 [ 102.124353][ T8463] do_sendfile+0x101b/0x1d40 [ 102.128955][ T8463] __se_compat_sys_sendfile+0x301/0x3c0 [ 102.134509][ T8463] __ia32_compat_sys_sendfile+0x56/0x70 [ 102.140044][ T8463] __do_fast_syscall_32+0x2aa/0x400 [ 102.145373][ T8463] do_fast_syscall_32+0x6b/0xd0 [ 102.150213][ T8463] do_SYSENTER_32+0x73/0x90 [ 102.154703][ T8463] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 102.161008][ T8463] ===================================================== [ 102.167926][ T8463] Disabling lock debugging due to kernel taint [ 102.174063][ T8463] Kernel panic - not syncing: panic_on_warn set ... [ 102.180677][ T8463] CPU: 0 PID: 8463 Comm: syz-executor023 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 102.190716][ T8463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.200762][ T8463] Call Trace: [ 102.204052][ T8463] dump_stack+0x1df/0x240 [ 102.208381][ T8463] panic+0x3d5/0xc3e [ 102.212293][ T8463] kmsan_report+0x1df/0x1e0 [ 102.216811][ T8463] __msan_warning+0x58/0xa0 [ 102.221346][ T8463] selinux_netlink_send+0x413/0xba0 [ 102.226551][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 102.231740][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 102.236940][ T8463] ? selinux_vm_enough_memory+0x1a0/0x1a0 [ 102.242653][ T8463] security_netlink_send+0xef/0x1e0 [ 102.247956][ T8463] netlink_sendmsg+0x1008/0x14d0 [ 102.252910][ T8463] ? netlink_getsockopt+0x1440/0x1440 [ 102.258270][ T8463] kernel_sendmsg+0x433/0x440 [ 102.262963][ T8463] sock_no_sendpage+0x235/0x300 [ 102.267821][ T8463] ? sock_no_mmap+0x30/0x30 [ 102.272335][ T8463] sock_sendpage+0x1e1/0x2c0 [ 102.276944][ T8463] pipe_to_sendpage+0x38c/0x4c0 [ 102.281784][ T8463] ? sock_fasync+0x250/0x250 [ 102.286402][ T8463] __splice_from_pipe+0x565/0xf00 [ 102.291422][ T8463] ? generic_splice_sendpage+0x2d0/0x2d0 [ 102.297067][ T8463] generic_splice_sendpage+0x1d5/0x2d0 [ 102.302526][ T8463] ? iter_file_splice_write+0x1800/0x1800 [ 102.308243][ T8463] direct_splice_actor+0x1fd/0x580 [ 102.313378][ T8463] ? kmsan_get_metadata+0x4f/0x180 [ 102.318497][ T8463] splice_direct_to_actor+0x6b2/0xf50 [ 102.323879][ T8463] ? do_splice_direct+0x580/0x580 [ 102.328932][ T8463] do_splice_direct+0x342/0x580 [ 102.333804][ T8463] do_sendfile+0x101b/0x1d40 [ 102.338419][ T8463] __se_compat_sys_sendfile+0x301/0x3c0 [ 102.343963][ T8463] ? kmsan_get_metadata+0x11d/0x180 [ 102.349147][ T8463] ? __ia32_sys_sendfile64+0x70/0x70 [ 102.354424][ T8463] __ia32_compat_sys_sendfile+0x56/0x70 [ 102.359955][ T8463] __do_fast_syscall_32+0x2aa/0x400 [ 102.365166][ T8463] do_fast_syscall_32+0x6b/0xd0 [ 102.370020][ T8463] do_SYSENTER_32+0x73/0x90 [ 102.374514][ T8463] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 102.380834][ T8463] RIP: 0023:0xf7fc5549 [ 102.384880][ T8463] Code: Bad RIP value. [ 102.388924][ T8463] RSP: 002b:00000000ffd24adc EFLAGS: 00000296 ORIG_RAX: 00000000000000bb [ 102.397320][ T8463] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000003 [ 102.405293][ T8463] RDX: 0000000000000000 RSI: 00000000000009af RDI: 0000000000000010 [ 102.413271][ T8463] RBP: 0000000000080803 R08: 0000000000000000 R09: 0000000000000000 [ 102.421229][ T8463] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 102.429194][ T8463] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 102.438184][ T8463] Kernel Offset: 0x7a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 102.449732][ T8463] Rebooting in 86400 seconds..