[ OK ] Reached target Login Prompts. [ 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 '10.128.15.213' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.764447][ T8455] ================================================================================ [ 46.774278][ T8455] UBSAN: array-index-out-of-bounds in arch/x86/kernel/uprobes.c:263:36 [ 46.783327][ T8455] index 4 is out of range for type 'insn_byte_t [4]' [ 46.790046][ T8455] CPU: 1 PID: 8455 Comm: syz-executor886 Not tainted 5.10.0-rc6-syzkaller #0 [ 46.798777][ T8455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.808816][ T8455] Call Trace: [ 46.812113][ T8455] dump_stack+0x137/0x1be [ 46.816432][ T8455] ? scnprintf+0x82/0xe0 [ 46.820660][ T8455] __ubsan_handle_out_of_bounds+0xdb/0x130 [ 46.826450][ T8455] ? insn_get_length+0x88/0x120 [ 46.831280][ T8455] arch_uprobe_analyze_insn+0x1e7/0x12c0 [ 46.836902][ T8455] install_breakpoint+0x3f1/0x450 [ 46.841915][ T8455] uprobe_mmap+0xd6f/0x1270 [ 46.846428][ T8455] mmap_region+0xa44/0x1bc0 [ 46.850923][ T8455] do_mmap+0x964/0x11e0 [ 46.855082][ T8455] vm_mmap_pgoff+0x12c/0x1c0 [ 46.859660][ T8455] ksys_mmap_pgoff+0x358/0x4f0 [ 46.864422][ T8455] do_syscall_64+0x2d/0x70 [ 46.868944][ T8455] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 46.874819][ T8455] RIP: 0033:0x440379 [ 46.878714][ T8455] 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 [ 46.898406][ T8455] RSP: 002b:00007ffeb3813ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 46.906812][ T8455] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 46.914764][ T8455] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000 [ 46.922722][ T8455] RBP: 00000000006ca018 R08: 0000000000000003 R09: 0000000000000000 [ 46.930677][ T8455] R10: 0000000000000412 R11: 0000000000000246 R12: 0000000000401b80 [ 46.938631][ T8455] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 46.946950][ T8455] ================================================================================ [ 46.956284][ T8455] Kernel panic - not syncing: panic_on_warn set ... [ 46.962929][ T8455] CPU: 1 PID: 8455 Comm: syz-executor886 Not tainted 5.10.0-rc6-syzkaller #0 [ 46.971658][ T8455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.981702][ T8455] Call Trace: [ 46.984977][ T8455] dump_stack+0x137/0x1be [ 46.989285][ T8455] ? panic+0x1f3/0x800 [ 46.993341][ T8455] panic+0x291/0x800 [ 46.997228][ T8455] ? __ubsan_handle_out_of_bounds+0x100/0x130 [ 47.003272][ T8455] __ubsan_handle_out_of_bounds+0x12b/0x130 [ 47.009142][ T8455] ? insn_get_length+0x88/0x120 [ 47.013994][ T8455] arch_uprobe_analyze_insn+0x1e7/0x12c0 [ 47.019612][ T8455] install_breakpoint+0x3f1/0x450 [ 47.024627][ T8455] uprobe_mmap+0xd6f/0x1270 [ 47.029125][ T8455] mmap_region+0xa44/0x1bc0 [ 47.033619][ T8455] do_mmap+0x964/0x11e0 [ 47.037758][ T8455] vm_mmap_pgoff+0x12c/0x1c0 [ 47.042334][ T8455] ksys_mmap_pgoff+0x358/0x4f0 [ 47.047080][ T8455] do_syscall_64+0x2d/0x70 [ 47.051484][ T8455] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.057351][ T8455] RIP: 0033:0x440379 [ 47.061234][ T8455] 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 [ 47.080915][ T8455] RSP: 002b:00007ffeb3813ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 47.089309][ T8455] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 47.097257][ T8455] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000 [ 47.105206][ T8455] RBP: 00000000006ca018 R08: 0000000000000003 R09: 0000000000000000 [ 47.113153][ T8455] R10: 0000000000000412 R11: 0000000000000246 R12: 0000000000401b80 [ 47.121099][ T8455] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 47.129966][ T8455] Kernel Offset: disabled [ 47.134351][ T8455] Rebooting in 86400 seconds..