[ 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 '10.128.0.153' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 154.099311][ T33] audit: type=1400 audit(1595184953.554:8): avc: denied { execmem } for pid=8427 comm="syz-executor033" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 154.120584][ T8427] ===================================================== [ 154.127583][ T8427] BUG: KMSAN: uninit-value in ___bpf_prog_run+0x9194/0x97a0 [ 154.134884][ T8427] CPU: 1 PID: 8427 Comm: syz-executor033 Not tainted 5.8.0-rc5-syzkaller #0 [ 154.149033][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.159099][ T8427] Call Trace: [ 154.162411][ T8427] dump_stack+0x1df/0x240 [ 154.166773][ T8427] kmsan_report+0xf7/0x1e0 [ 154.171239][ T8427] __msan_warning+0x58/0xa0 [ 154.175761][ T8427] ___bpf_prog_run+0x9194/0x97a0 [ 154.180716][ T8427] ? kmsan_internal_set_origin+0x75/0xb0 [ 154.186414][ T8427] __bpf_prog_run32+0x101/0x170 [ 154.191302][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.196449][ T8427] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 154.202280][ T8427] ? ___bpf_prog_run+0x97a0/0x97a0 [ 154.207424][ T8427] __seccomp_filter+0x59e/0x2720 [ 154.212445][ T8427] ? kmsan_get_metadata+0x11d/0x180 [ 154.217731][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.222905][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.228047][ T8427] __secure_computing+0x1fa/0x380 [ 154.233097][ T8427] syscall_trace_enter+0x63b/0xe10 [ 154.238265][ T8427] __do_fast_syscall_32+0x209/0x400 [ 154.243502][ T8427] do_fast_syscall_32+0x6b/0xd0 [ 154.248385][ T8427] do_SYSENTER_32+0x73/0x90 [ 154.252909][ T8427] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 154.259248][ T8427] RIP: 0023:0xf7fef549 [ 154.263320][ T8427] Code: Bad RIP value. [ 154.267387][ T8427] RSP: 002b:00000000ffc12e4c EFLAGS: 00000292 ORIG_RAX: 00000000000000fc [ 154.275814][ T8427] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080eb298 [ 154.283822][ T8427] RDX: 0000000000000000 RSI: 00000000080d5e98 RDI: 00000000080eb2a0 [ 154.291812][ T8427] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 154.299898][ T8427] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 154.307892][ T8427] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 154.315892][ T8427] [ 154.318222][ T8427] Uninit was stored to memory at: [ 154.323263][ T8427] kmsan_internal_chain_origin+0xad/0x130 [ 154.328998][ T8427] __msan_chain_origin+0x50/0x90 [ 154.333944][ T8427] ___bpf_prog_run+0x6c64/0x97a0 [ 154.338885][ T8427] __bpf_prog_run32+0x101/0x170 [ 154.343748][ T8427] __seccomp_filter+0x59e/0x2720 [ 154.348692][ T8427] __secure_computing+0x1fa/0x380 [ 154.353722][ T8427] syscall_trace_enter+0x63b/0xe10 [ 154.358842][ T8427] __do_fast_syscall_32+0x209/0x400 [ 154.364056][ T8427] do_fast_syscall_32+0x6b/0xd0 [ 154.368913][ T8427] do_SYSENTER_32+0x73/0x90 [ 154.373440][ T8427] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 154.379764][ T8427] [ 154.382101][ T8427] Local variable ----regs@__bpf_prog_run32 created at: [ 154.388968][ T8427] __bpf_prog_run32+0x87/0x170 [ 154.393741][ T8427] __bpf_prog_run32+0x87/0x170 [ 154.398528][ T8427] ===================================================== [ 154.405466][ T8427] Disabling lock debugging due to kernel taint [ 154.411644][ T8427] Kernel panic - not syncing: panic_on_warn set ... [ 154.418250][ T8427] CPU: 1 PID: 8427 Comm: syz-executor033 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 154.428335][ T8427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 154.438398][ T8427] Call Trace: [ 154.441706][ T8427] dump_stack+0x1df/0x240 [ 154.446061][ T8427] panic+0x3d5/0xc3e [ 154.450028][ T8427] kmsan_report+0x1df/0x1e0 [ 154.454556][ T8427] __msan_warning+0x58/0xa0 [ 154.459076][ T8427] ___bpf_prog_run+0x9194/0x97a0 [ 154.464035][ T8427] ? kmsan_internal_set_origin+0x75/0xb0 [ 154.469724][ T8427] __bpf_prog_run32+0x101/0x170 [ 154.474604][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.479729][ T8427] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 154.485553][ T8427] ? ___bpf_prog_run+0x97a0/0x97a0 [ 154.490679][ T8427] __seccomp_filter+0x59e/0x2720 [ 154.495664][ T8427] ? kmsan_get_metadata+0x11d/0x180 [ 154.500968][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.506096][ T8427] ? kmsan_get_metadata+0x4f/0x180 [ 154.511228][ T8427] __secure_computing+0x1fa/0x380 [ 154.516305][ T8427] syscall_trace_enter+0x63b/0xe10 [ 154.521466][ T8427] __do_fast_syscall_32+0x209/0x400 [ 154.526692][ T8427] do_fast_syscall_32+0x6b/0xd0 [ 154.531593][ T8427] do_SYSENTER_32+0x73/0x90 [ 154.536114][ T8427] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 154.542447][ T8427] RIP: 0023:0xf7fef549 [ 154.546507][ T8427] Code: Bad RIP value. [ 154.550578][ T8427] RSP: 002b:00000000ffc12e4c EFLAGS: 00000292 ORIG_RAX: 00000000000000fc [ 154.559000][ T8427] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000080eb298 [ 154.566980][ T8427] RDX: 0000000000000000 RSI: 00000000080d5e98 RDI: 00000000080eb2a0 [ 154.574961][ T8427] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 154.582941][ T8427] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 154.590923][ T8427] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 154.599942][ T8427] Kernel Offset: 0x1e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 154.611480][ T8427] Rebooting in 86400 seconds..