[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.309207][ T35] audit: type=1400 audit(1604698804.326:8): avc: denied { execmem } for pid=8457 comm="syz-executor000" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 72.348121][ T8457] ================================================================================ [ 72.357767][ T8457] UBSAN: array-index-out-of-bounds in arch/x86/kernel/uprobes.c:263:56 [ 72.366875][ T8457] index 4 is out of range for type 'insn_byte_t [4]' [ 72.373818][ T8457] CPU: 0 PID: 8457 Comm: syz-executor000 Not tainted 5.10.0-rc2-syzkaller #0 [ 72.382582][ T8457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.392628][ T8457] Call Trace: [ 72.395910][ T8457] dump_stack+0x107/0x163 [ 72.400226][ T8457] ubsan_epilogue+0xb/0x5a [ 72.404662][ T8457] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 72.410809][ T8457] arch_uprobe_analyze_insn+0x8f4/0xa40 [ 72.416468][ T8457] ? push_emulate_op+0x270/0x270 [ 72.421461][ T8457] ? PageHuge+0x11c/0x170 [ 72.425787][ T8457] ? memcpy+0x39/0x60 [ 72.429760][ T8457] install_breakpoint.isra.0+0x6c4/0x7c0 [ 72.435383][ T8457] uprobe_mmap+0x5ec/0x1080 [ 72.439880][ T8457] ? do_raw_spin_unlock+0x171/0x230 [ 72.445061][ T8457] ? uprobe_apply+0x150/0x150 [ 72.449771][ T8457] mmap_region+0x56c/0x1760 [ 72.454267][ T8457] do_mmap+0xcf9/0x11d0 [ 72.458410][ T8457] vm_mmap_pgoff+0x195/0x200 [ 72.462991][ T8457] ? randomize_stack_top+0x100/0x100 [ 72.468353][ T8457] ksys_mmap_pgoff+0x444/0x580 [ 72.473103][ T8457] ? find_mergeable_anon_vma+0x240/0x240 [ 72.478721][ T8457] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.484604][ T8457] do_syscall_64+0x2d/0x70 [ 72.489002][ T8457] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.494884][ T8457] RIP: 0033:0x440379 [ 72.498781][ T8457] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 72.518373][ T8457] RSP: 002b:00007ffe7b66c228 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 72.526772][ T8457] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 72.534730][ T8457] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000 [ 72.542699][ T8457] RBP: 00000000006ca018 R08: 0000000000000003 R09: 0000000000000000 [ 72.550653][ T8457] R10: 0000000000000412 R11: 0000000000000246 R12: 0000000000401b80 [ 72.558607][ T8457] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 72.567940][ T8457] ================================================================================ [ 72.577338][ T8457] Kernel panic - not syncing: panic_on_warn set ... [ 72.583935][ T8457] CPU: 0 PID: 8457 Comm: syz-executor000 Not tainted 5.10.0-rc2-syzkaller #0 [ 72.592685][ T8457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.602724][ T8457] Call Trace: [ 72.606004][ T8457] dump_stack+0x107/0x163 [ 72.610328][ T8457] panic+0x306/0x73d [ 72.614204][ T8457] ? __warn_printk+0xf3/0xf3 [ 72.618781][ T8457] ? mark_lock+0xf7/0x24c0 [ 72.623185][ T8457] ? ubsan_epilogue+0x3e/0x5a [ 72.627843][ T8457] ? ubsan_epilogue+0x35/0x5a [ 72.632507][ T8457] ubsan_epilogue+0x54/0x5a [ 72.637013][ T8457] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 72.643155][ T8457] arch_uprobe_analyze_insn+0x8f4/0xa40 [ 72.648683][ T8457] ? push_emulate_op+0x270/0x270 [ 72.653604][ T8457] ? PageHuge+0x11c/0x170 [ 72.658043][ T8457] ? memcpy+0x39/0x60 [ 72.662037][ T8457] install_breakpoint.isra.0+0x6c4/0x7c0 [ 72.667666][ T8457] uprobe_mmap+0x5ec/0x1080 [ 72.672171][ T8457] ? do_raw_spin_unlock+0x171/0x230 [ 72.677350][ T8457] ? uprobe_apply+0x150/0x150 [ 72.682100][ T8457] mmap_region+0x56c/0x1760 [ 72.686659][ T8457] do_mmap+0xcf9/0x11d0 [ 72.690869][ T8457] vm_mmap_pgoff+0x195/0x200 [ 72.695447][ T8457] ? randomize_stack_top+0x100/0x100 [ 72.700739][ T8457] ksys_mmap_pgoff+0x444/0x580 [ 72.705505][ T8457] ? find_mergeable_anon_vma+0x240/0x240 [ 72.711129][ T8457] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.717011][ T8457] do_syscall_64+0x2d/0x70 [ 72.721428][ T8457] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.727305][ T8457] RIP: 0033:0x440379 [ 72.731205][ T8457] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 72.750816][ T8457] RSP: 002b:00007ffe7b66c228 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 72.759220][ T8457] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 72.767183][ T8457] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000 [ 72.775139][ T8457] RBP: 00000000006ca018 R08: 0000000000000003 R09: 0000000000000000 [ 72.783100][ T8457] R10: 0000000000000412 R11: 0000000000000246 R12: 0000000000401b80 [ 72.791059][ T8457] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 72.799864][ T8457] Kernel Offset: disabled [ 72.804285][ T8457] Rebooting in 86400 seconds..