[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.254' (ECDSA) to the list of known hosts. 2021/04/23 04:47:19 fuzzer started 2021/04/23 04:47:20 dialing manager at 10.128.0.169:37359 2021/04/23 04:47:20 syscalls: 3560 2021/04/23 04:47:20 code coverage: enabled 2021/04/23 04:47:20 comparison tracing: enabled 2021/04/23 04:47:20 extra coverage: enabled 2021/04/23 04:47:20 setuid sandbox: enabled 2021/04/23 04:47:20 namespace sandbox: enabled 2021/04/23 04:47:20 Android sandbox: /sys/fs/selinux/policy does not exist 2021/04/23 04:47:20 fault injection: enabled 2021/04/23 04:47:20 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/04/23 04:47:20 net packet injection: enabled 2021/04/23 04:47:20 net device setup: enabled 2021/04/23 04:47:20 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/04/23 04:47:20 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/04/23 04:47:20 USB emulation: enabled 2021/04/23 04:47:20 hci packet injection: enabled 2021/04/23 04:47:20 wifi device emulation: enabled 2021/04/23 04:47:20 802.15.4 emulation: enabled 2021/04/23 04:47:20 fetching corpus: 0, signal 0/2000 (executing program) 2021/04/23 04:47:20 fetching corpus: 50, signal 46215/49951 (executing program) syzkaller login: [ 69.399943][ T8428] BUG: spinlock bad magic on CPU#1, sshd/8428 [ 69.406169][ T8428] lock: 0xffff888012888000, .magic: 00001590, .owner: /-1, .owner_cpu: 12366 [ 69.415646][ T8428] CPU: 1 PID: 8428 Comm: sshd Not tainted 5.12.0-rc8-next-20210422-syzkaller #0 [ 69.424676][ T8428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.434730][ T8428] Call Trace: [ 69.438015][ T8428] dump_stack+0x141/0x1d7 [ 69.442356][ T8428] do_raw_spin_lock+0x216/0x2b0 [ 69.447207][ T8428] ? rwlock_bug.part.0+0x90/0x90 [ 69.452137][ T8428] ? _raw_spin_lock_irq+0x41/0x50 [ 69.457166][ T8428] sigprocmask+0x1ff/0x340 [ 69.461600][ T8428] ? sigsuspend+0x2e0/0x2e0 [ 69.466115][ T8428] __x64_sys_rt_sigprocmask+0x19a/0x290 [ 69.471675][ T8428] ? set_compat_user_sigmask+0x2a0/0x2a0 [ 69.477327][ T8428] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.483254][ T8428] do_syscall_64+0x3a/0xb0 [ 69.487688][ T8428] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.493595][ T8428] RIP: 0033:0x7f3eebcb12e0 [ 69.498045][ T8428] Code: 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 63 ff 41 ba 08 00 00 00 b8 0e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 08 f3 c3 66 0f 1f 44 00 00 48 8b 15 81 5b 36 [ 69.517661][ T8428] RSP: 002b:00007ffccaf8e4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000000e [ 69.526452][ T8428] RAX: ffffffffffffffda RBX: 00007ffccaf8e590 RCX: 00007f3eebcb12e0 [ 69.534434][ T8428] RDX: 00007ffccaf8e510 RSI: 00007ffccaf8e590 RDI: 0000000000000000 [ 69.542436][ T8428] RBP: 0000558b86ac0a88 R08: 00007ffccaf8e6c0 R09: 0000000000000100 [ 69.550453][ T8428] R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffccaf8e510 [ 69.558437][ T8428] R13: 00007ffccaf8e69f R14: 0000558b8687bbe7 R15: 0000000000000003 [ 69.566449][ T8428] ================================================================================ [ 69.575731][ T8428] UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:130:9 [ 69.584034][ T8428] index 16382 is out of range for type 'long unsigned int [8]' [ 69.591591][ T8428] CPU: 1 PID: 8428 Comm: sshd Not tainted 5.12.0-rc8-next-20210422-syzkaller #0 [ 69.600629][ T8428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.610788][ T8428] Call Trace: [ 69.614081][ T8428] dump_stack+0x141/0x1d7 [ 69.618429][ T8428] ubsan_epilogue+0xb/0x5a [ 69.622867][ T8428] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 69.629035][ T8428] ? __kernel_text_address+0x9/0x30 [ 69.634252][ T8428] ? show_trace_log_lvl+0x1a5/0x2ba [ 69.639468][ T8428] __pv_queued_spin_lock_slowpath+0xa3f/0xb40 [ 69.646086][ T8428] ? pv_hash+0x100/0x100 [ 69.650361][ T8428] do_raw_spin_lock+0x200/0x2b0 [ 69.655229][ T8428] ? rwlock_bug.part.0+0x90/0x90 [ 69.660187][ T8428] ? _raw_spin_lock_irq+0x41/0x50 [ 69.665233][ T8428] sigprocmask+0x1ff/0x340 [ 69.669671][ T8428] ? sigsuspend+0x2e0/0x2e0 [ 69.674191][ T8428] __x64_sys_rt_sigprocmask+0x19a/0x290 [ 69.679757][ T8428] ? set_compat_user_sigmask+0x2a0/0x2a0 [ 69.685493][ T8428] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.691422][ T8428] do_syscall_64+0x3a/0xb0 [ 69.695876][ T8428] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.702399][ T8428] RIP: 0033:0x7f3eebcb12e0 [ 69.706832][ T8428] Code: 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 63 ff 41 ba 08 00 00 00 b8 0e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 08 f3 c3 66 0f 1f 44 00 00 48 8b 15 81 5b 36 [ 69.726471][ T8428] RSP: 002b:00007ffccaf8e4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000000e [ 69.734907][ T8428] RAX: ffffffffffffffda RBX: 00007ffccaf8e590 RCX: 00007f3eebcb12e0 [ 69.747946][ T8428] RDX: 00007ffccaf8e510 RSI: 00007ffccaf8e590 RDI: 0000000000000000 [ 69.755930][ T8428] RBP: 0000558b86ac0a88 R08: 00007ffccaf8e6c0 R09: 0000000000000100 [ 69.763912][ T8428] R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffccaf8e510 [ 69.772068][ T8428] R13: 00007ffccaf8e69f R14: 0000558b8687bbe7 R15: 0000000000000003 [ 69.780053][ T8428] ================================================================================ [ 69.789414][ T8428] Kernel panic - not syncing: panic_on_warn set ... [ 69.796448][ T8428] CPU: 1 PID: 8428 Comm: sshd Not tainted 5.12.0-rc8-next-20210422-syzkaller #0 [ 69.805474][ T8428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.815705][ T8428] Call Trace: [ 69.819009][ T8428] dump_stack+0x141/0x1d7 [ 69.823350][ T8428] panic+0x306/0x73d [ 69.827258][ T8428] ? __warn_printk+0xf3/0xf3 [ 69.831861][ T8428] ? ubsan_epilogue+0x3e/0x5a [ 69.836547][ T8428] ubsan_epilogue+0x54/0x5a [ 69.841055][ T8428] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 69.847764][ T8428] ? __kernel_text_address+0x9/0x30 [ 69.852972][ T8428] ? show_trace_log_lvl+0x1a5/0x2ba [ 69.858184][ T8428] __pv_queued_spin_lock_slowpath+0xa3f/0xb40 [ 69.864272][ T8428] ? pv_hash+0x100/0x100 [ 69.868530][ T8428] do_raw_spin_lock+0x200/0x2b0 [ 69.873387][ T8428] ? rwlock_bug.part.0+0x90/0x90 [ 69.878335][ T8428] ? _raw_spin_lock_irq+0x41/0x50 [ 69.883373][ T8428] sigprocmask+0x1ff/0x340 [ 69.887917][ T8428] ? sigsuspend+0x2e0/0x2e0 [ 69.892439][ T8428] __x64_sys_rt_sigprocmask+0x19a/0x290 [ 69.898000][ T8428] ? set_compat_user_sigmask+0x2a0/0x2a0 [ 69.903651][ T8428] ? syscall_enter_from_user_mode+0x27/0x70 [ 69.909655][ T8428] do_syscall_64+0x3a/0xb0 [ 69.914098][ T8428] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 69.920627][ T8428] RIP: 0033:0x7f3eebcb12e0 [ 69.931310][ T8428] Code: 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 63 ff 41 ba 08 00 00 00 b8 0e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 08 f3 c3 66 0f 1f 44 00 00 48 8b 15 81 5b 36 [ 69.951114][ T8428] RSP: 002b:00007ffccaf8e4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000000e [ 69.959575][ T8428] RAX: ffffffffffffffda RBX: 00007ffccaf8e590 RCX: 00007f3eebcb12e0 [ 69.967564][ T8428] RDX: 00007ffccaf8e510 RSI: 00007ffccaf8e590 RDI: 0000000000000000 [ 69.975637][ T8428] RBP: 0000558b86ac0a88 R08: 00007ffccaf8e6c0 R09: 0000000000000100 [ 69.983727][ T8428] R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffccaf8e510 [ 69.992760][ T8428] R13: 00007ffccaf8e69f R14: 0000558b8687bbe7 R15: 0000000000000003 [ 70.001321][ T8428] Kernel Offset: disabled [ 70.005763][ T8428] Rebooting in 86400 seconds..