Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 122.056775][ T32] audit: type=1400 audit(1595242890.112:8): avc: denied { execmem } for pid=8474 comm="syz-executor703" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 122.131163][ T8476] ===================================================== [ 122.138120][ T8476] BUG: KMSAN: uninit-value in bpf_skb_load_helper_16+0xd9/0x2b0 [ 122.145729][ T8476] CPU: 1 PID: 8476 Comm: syz-executor703 Not tainted 5.8.0-rc5-syzkaller #0 [ 122.154368][ T8476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.164484][ T8476] Call Trace: [ 122.167772][ T8476] dump_stack+0x1df/0x240 [ 122.172083][ T8476] kmsan_report+0xf7/0x1e0 [ 122.176490][ T8476] __msan_warning+0x58/0xa0 [ 122.180984][ T8476] bpf_skb_load_helper_16+0xd9/0x2b0 [ 122.186249][ T8476] ___bpf_prog_run+0x214d/0x97a0 [ 122.191162][ T8476] ? do_splice+0x2249/0x30a0 [ 122.195729][ T8476] ? bpf_skb_load_helper_8_no_cache+0x340/0x340 [ 122.201954][ T8476] __bpf_prog_run32+0x101/0x170 [ 122.206787][ T8476] ? kmsan_get_metadata+0x4f/0x180 [ 122.211888][ T8476] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 122.217684][ T8476] ? ___bpf_prog_run+0x97a0/0x97a0 [ 122.222782][ T8476] sk_filter_trim_cap+0x42a/0xcc0 [ 122.227785][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 122.232973][ T8476] ? kmsan_set_origin_checked+0x95/0xf0 [ 122.238502][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 122.243682][ T8476] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 122.249472][ T8476] netlink_unicast+0x4b9/0x1100 [ 122.254333][ T8476] netlink_ack+0x105c/0x11a0 [ 122.258941][ T8476] netlink_rcv_skb+0x321/0x650 [ 122.263686][ T8476] ? rtnetlink_bind+0x120/0x120 [ 122.268518][ T8476] rtnetlink_rcv+0x50/0x60 [ 122.272915][ T8476] netlink_unicast+0xf9e/0x1100 [ 122.277757][ T8476] ? rtnetlink_net_exit+0x90/0x90 [ 122.282768][ T8476] netlink_sendmsg+0x1246/0x14d0 [ 122.287694][ T8476] ? netlink_getsockopt+0x1440/0x1440 [ 122.293048][ T8476] kernel_sendmsg+0x433/0x440 [ 122.297707][ T8476] sock_no_sendpage+0x235/0x300 [ 122.302541][ T8476] ? sock_no_mmap+0x30/0x30 [ 122.307023][ T8476] sock_sendpage+0x1e1/0x2c0 [ 122.311594][ T8476] pipe_to_sendpage+0x38c/0x4c0 [ 122.316422][ T8476] ? sock_fasync+0x250/0x250 [ 122.320994][ T8476] __splice_from_pipe+0x565/0xf00 [ 122.325996][ T8476] ? generic_splice_sendpage+0x2d0/0x2d0 [ 122.331611][ T8476] generic_splice_sendpage+0x1d5/0x2d0 [ 122.337050][ T8476] ? iter_file_splice_write+0x1800/0x1800 [ 122.342744][ T8476] do_splice+0x2249/0x30a0 [ 122.347179][ T8476] ? __local_bh_enable_ip+0x97/0x1d0 [ 122.352442][ T8476] ? _raw_spin_unlock_bh+0x4b/0x60 [ 122.357527][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 122.362699][ T8476] ? kmsan_set_origin_checked+0x95/0xf0 [ 122.368232][ T8476] __se_sys_splice+0x271/0x420 [ 122.372981][ T8476] ? __se_sys_splice+0x420/0x420 [ 122.377895][ T8476] __ia32_sys_splice+0x6e/0x90 [ 122.382634][ T8476] __do_fast_syscall_32+0x2aa/0x400 [ 122.387808][ T8476] do_fast_syscall_32+0x6b/0xd0 [ 122.392636][ T8476] do_SYSENTER_32+0x73/0x90 [ 122.397113][ T8476] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 122.403410][ T8476] RIP: 0023:0xf7f4c549 [ 122.407445][ T8476] Code: Bad RIP value. [ 122.411483][ T8476] RSP: 002b:00000000f7f261dc EFLAGS: 00000292 ORIG_RAX: 0000000000000139 [ 122.419867][ T8476] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 122.427813][ T8476] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 000000000004ffe0 [ 122.435760][ T8476] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 122.443705][ T8476] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 122.451647][ T8476] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 122.459602][ T8476] [ 122.461902][ T8476] Uninit was stored to memory at: [ 122.466903][ T8476] kmsan_internal_chain_origin+0xad/0x130 [ 122.472595][ T8476] __msan_chain_origin+0x50/0x90 [ 122.477505][ T8476] ___bpf_prog_run+0x6c80/0x97a0 [ 122.482449][ T8476] __bpf_prog_run32+0x101/0x170 [ 122.487281][ T8476] sk_filter_trim_cap+0x42a/0xcc0 [ 122.492286][ T8476] netlink_unicast+0x4b9/0x1100 [ 122.497372][ T8476] netlink_ack+0x105c/0x11a0 [ 122.501934][ T8476] netlink_rcv_skb+0x321/0x650 [ 122.506668][ T8476] rtnetlink_rcv+0x50/0x60 [ 122.511150][ T8476] netlink_unicast+0xf9e/0x1100 [ 122.515974][ T8476] netlink_sendmsg+0x1246/0x14d0 [ 122.520884][ T8476] kernel_sendmsg+0x433/0x440 [ 122.525531][ T8476] sock_no_sendpage+0x235/0x300 [ 122.530353][ T8476] sock_sendpage+0x1e1/0x2c0 [ 122.534917][ T8476] pipe_to_sendpage+0x38c/0x4c0 [ 122.539741][ T8476] __splice_from_pipe+0x565/0xf00 [ 122.544735][ T8476] generic_splice_sendpage+0x1d5/0x2d0 [ 122.550166][ T8476] do_splice+0x2249/0x30a0 [ 122.554556][ T8476] __se_sys_splice+0x271/0x420 [ 122.559292][ T8476] __ia32_sys_splice+0x6e/0x90 [ 122.564030][ T8476] __do_fast_syscall_32+0x2aa/0x400 [ 122.569199][ T8476] do_fast_syscall_32+0x6b/0xd0 [ 122.574026][ T8476] do_SYSENTER_32+0x73/0x90 [ 122.578504][ T8476] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 122.584803][ T8476] [ 122.587582][ T8476] Uninit was stored to memory at: [ 122.592585][ T8476] kmsan_internal_chain_origin+0xad/0x130 [ 122.598275][ T8476] __msan_chain_origin+0x50/0x90 [ 122.603188][ T8476] ___bpf_prog_run+0x6cbe/0x97a0 [ 122.608096][ T8476] __bpf_prog_run32+0x101/0x170 [ 122.612920][ T8476] sk_filter_trim_cap+0x42a/0xcc0 [ 122.617926][ T8476] netlink_unicast+0x4b9/0x1100 [ 122.622747][ T8476] netlink_ack+0x105c/0x11a0 [ 122.627311][ T8476] netlink_rcv_skb+0x321/0x650 [ 122.632047][ T8476] rtnetlink_rcv+0x50/0x60 [ 122.636441][ T8476] netlink_unicast+0xf9e/0x1100 [ 122.641266][ T8476] netlink_sendmsg+0x1246/0x14d0 [ 122.646175][ T8476] kernel_sendmsg+0x433/0x440 [ 122.650821][ T8476] sock_no_sendpage+0x235/0x300 [ 122.655646][ T8476] sock_sendpage+0x1e1/0x2c0 [ 122.660211][ T8476] pipe_to_sendpage+0x38c/0x4c0 [ 122.665034][ T8476] __splice_from_pipe+0x565/0xf00 [ 122.670042][ T8476] generic_splice_sendpage+0x1d5/0x2d0 [ 122.675475][ T8476] do_splice+0x2249/0x30a0 [ 122.679877][ T8476] __se_sys_splice+0x271/0x420 [ 122.684614][ T8476] __ia32_sys_splice+0x6e/0x90 [ 122.689351][ T8476] __do_fast_syscall_32+0x2aa/0x400 [ 122.694530][ T8476] do_fast_syscall_32+0x6b/0xd0 [ 122.699353][ T8476] do_SYSENTER_32+0x73/0x90 [ 122.703827][ T8476] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 122.710120][ T8476] [ 122.712422][ T8476] Uninit was stored to memory at: [ 122.717424][ T8476] kmsan_internal_chain_origin+0xad/0x130 [ 122.723127][ T8476] __msan_chain_origin+0x50/0x90 [ 122.728037][ T8476] ___bpf_prog_run+0x6c64/0x97a0 [ 122.732948][ T8476] __bpf_prog_run32+0x101/0x170 [ 122.737773][ T8476] sk_filter_trim_cap+0x42a/0xcc0 [ 122.742771][ T8476] netlink_unicast+0x4b9/0x1100 [ 122.747683][ T8476] netlink_ack+0x105c/0x11a0 [ 122.752252][ T8476] netlink_rcv_skb+0x321/0x650 [ 122.757008][ T8476] rtnetlink_rcv+0x50/0x60 [ 122.761401][ T8476] netlink_unicast+0xf9e/0x1100 [ 122.766224][ T8476] netlink_sendmsg+0x1246/0x14d0 [ 122.771142][ T8476] kernel_sendmsg+0x433/0x440 [ 122.775812][ T8476] sock_no_sendpage+0x235/0x300 [ 122.780637][ T8476] sock_sendpage+0x1e1/0x2c0 [ 122.785203][ T8476] pipe_to_sendpage+0x38c/0x4c0 [ 122.790130][ T8476] __splice_from_pipe+0x565/0xf00 [ 122.795130][ T8476] generic_splice_sendpage+0x1d5/0x2d0 [ 122.800561][ T8476] do_splice+0x2249/0x30a0 [ 122.804950][ T8476] __se_sys_splice+0x271/0x420 [ 122.809686][ T8476] __ia32_sys_splice+0x6e/0x90 [ 122.814425][ T8476] __do_fast_syscall_32+0x2aa/0x400 [ 122.819597][ T8476] do_fast_syscall_32+0x6b/0xd0 [ 122.824421][ T8476] do_SYSENTER_32+0x73/0x90 [ 122.828896][ T8476] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 122.835187][ T8476] [ 122.837487][ T8476] Local variable ----regs@__bpf_prog_run32 created at: [ 122.844407][ T8476] __bpf_prog_run32+0x87/0x170 [ 122.849142][ T8476] __bpf_prog_run32+0x87/0x170 [ 122.853873][ T8476] ===================================================== [ 122.860774][ T8476] Disabling lock debugging due to kernel taint [ 122.866998][ T8476] Kernel panic - not syncing: panic_on_warn set ... [ 122.873561][ T8476] CPU: 1 PID: 8476 Comm: syz-executor703 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 122.883588][ T8476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.893617][ T8476] Call Trace: [ 122.896890][ T8476] dump_stack+0x1df/0x240 [ 122.901199][ T8476] panic+0x3d5/0xc3e [ 122.905081][ T8476] kmsan_report+0x1df/0x1e0 [ 122.909567][ T8476] __msan_warning+0x58/0xa0 [ 122.914047][ T8476] bpf_skb_load_helper_16+0xd9/0x2b0 [ 122.919308][ T8476] ___bpf_prog_run+0x214d/0x97a0 [ 122.924220][ T8476] ? do_splice+0x2249/0x30a0 [ 122.928788][ T8476] ? bpf_skb_load_helper_8_no_cache+0x340/0x340 [ 122.935012][ T8476] __bpf_prog_run32+0x101/0x170 [ 122.939855][ T8476] ? kmsan_get_metadata+0x4f/0x180 [ 122.944941][ T8476] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 122.950717][ T8476] ? ___bpf_prog_run+0x97a0/0x97a0 [ 122.955803][ T8476] sk_filter_trim_cap+0x42a/0xcc0 [ 122.960809][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 122.965991][ T8476] ? kmsan_set_origin_checked+0x95/0xf0 [ 122.971511][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 122.976685][ T8476] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 122.982465][ T8476] netlink_unicast+0x4b9/0x1100 [ 122.987297][ T8476] netlink_ack+0x105c/0x11a0 [ 122.991896][ T8476] netlink_rcv_skb+0x321/0x650 [ 122.996644][ T8476] ? rtnetlink_bind+0x120/0x120 [ 123.001472][ T8476] rtnetlink_rcv+0x50/0x60 [ 123.005865][ T8476] netlink_unicast+0xf9e/0x1100 [ 123.010687][ T8476] ? rtnetlink_net_exit+0x90/0x90 [ 123.015693][ T8476] netlink_sendmsg+0x1246/0x14d0 [ 123.020614][ T8476] ? netlink_getsockopt+0x1440/0x1440 [ 123.025975][ T8476] kernel_sendmsg+0x433/0x440 [ 123.030629][ T8476] sock_no_sendpage+0x235/0x300 [ 123.035463][ T8476] ? sock_no_mmap+0x30/0x30 [ 123.039940][ T8476] sock_sendpage+0x1e1/0x2c0 [ 123.044509][ T8476] pipe_to_sendpage+0x38c/0x4c0 [ 123.049336][ T8476] ? sock_fasync+0x250/0x250 [ 123.053914][ T8476] __splice_from_pipe+0x565/0xf00 [ 123.058915][ T8476] ? generic_splice_sendpage+0x2d0/0x2d0 [ 123.064543][ T8476] generic_splice_sendpage+0x1d5/0x2d0 [ 123.070068][ T8476] ? iter_file_splice_write+0x1800/0x1800 [ 123.075760][ T8476] do_splice+0x2249/0x30a0 [ 123.080290][ T8476] ? __local_bh_enable_ip+0x97/0x1d0 [ 123.085551][ T8476] ? _raw_spin_unlock_bh+0x4b/0x60 [ 123.090635][ T8476] ? kmsan_get_metadata+0x11d/0x180 [ 123.095806][ T8476] ? kmsan_set_origin_checked+0x95/0xf0 [ 123.101355][ T8476] __se_sys_splice+0x271/0x420 [ 123.106113][ T8476] ? __se_sys_splice+0x420/0x420 [ 123.111068][ T8476] __ia32_sys_splice+0x6e/0x90 [ 123.115817][ T8476] __do_fast_syscall_32+0x2aa/0x400 [ 123.121003][ T8476] do_fast_syscall_32+0x6b/0xd0 [ 123.125836][ T8476] do_SYSENTER_32+0x73/0x90 [ 123.130320][ T8476] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 123.136624][ T8476] RIP: 0023:0xf7f4c549 [ 123.140661][ T8476] Code: Bad RIP value. [ 123.144698][ T8476] RSP: 002b:00000000f7f261dc EFLAGS: 00000292 ORIG_RAX: 0000000000000139 [ 123.153080][ T8476] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 123.161025][ T8476] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 000000000004ffe0 [ 123.168977][ T8476] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 123.176923][ T8476] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 123.184907][ T8476] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 123.194143][ T8476] Kernel Offset: 0x2ac00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 123.205883][ T8476] Rebooting in 86400 seconds..