[ 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 '10.128.10.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.595440][ T8363] loop0: detected capacity change from 0 to 3974 [ 47.618353][ T8363] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) [ 47.644261][ T8363] ================================================================================ [ 47.662745][ T8363] UBSAN: array-index-out-of-bounds in fs/udf/super.c:2524:12 [ 47.670155][ T8363] index 0 is out of range for type '__le32 [0]' [ 47.693900][ T8363] CPU: 1 PID: 8363 Comm: syz-executor557 Not tainted 5.12.0-rc8-syzkaller #0 [ 47.702699][ T8363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.712762][ T8363] Call Trace: [ 47.716056][ T8363] dump_stack+0x202/0x31e [ 47.720408][ T8363] ? show_regs_print_info+0x12/0x12 [ 47.725587][ T8363] ? vsnprintf+0x19e/0x1d60 [ 47.730108][ T8363] ? log_buf_vmcoreinfo_setup+0x45d/0x45d [ 47.735821][ T8363] ? smk_access+0x480/0x480 [ 47.740303][ T8363] ? smk_access+0x44b/0x480 [ 47.744786][ T8363] __ubsan_handle_out_of_bounds+0xdb/0x130 [ 47.750594][ T8363] ? smk_tskacc+0x300/0x370 [ 47.755079][ T8363] udf_statfs+0x49f/0xd70 [ 47.759425][ T8363] ? udf_sync_fs+0x360/0x360 [ 47.763998][ T8363] ? strncpy_from_user+0x1f6/0x350 [ 47.769116][ T8363] vfs_statfs+0x136/0x310 [ 47.773447][ T8363] __se_sys_statfs+0xe5/0x210 [ 47.778119][ T8363] ? __x64_sys_statfs+0x60/0x60 [ 47.782960][ T8363] ? __context_tracking_exit+0x7a/0xd0 [ 47.788416][ T8363] ? __lock_acquire+0x6040/0x6040 [ 47.793431][ T8363] ? lockdep_hardirqs_on_prepare+0x3e2/0x750 [ 47.799400][ T8363] ? syscall_enter_from_user_mode+0x2e/0x1c0 [ 47.805375][ T8363] ? syscall_enter_from_user_mode+0x2e/0x1c0 [ 47.811333][ T8363] do_syscall_64+0x2d/0x70 [ 47.815728][ T8363] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.821600][ T8363] RIP: 0033:0x444579 [ 47.825475][ T8363] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 47.845073][ T8363] RSP: 002b:00007ffc428d7b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000089 [ 47.853471][ T8363] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000444579 [ 47.861436][ T8363] RDX: 0000000000402b43 RSI: 0000000000000000 RDI: 00000000200001c0 [ 47.869387][ T8363] RBP: 0000000000403e10 R08: 0000000000000000 R09: 0000000000000000 [ 47.877351][ T8363] R10: 00007ffc428d7a20 R11: 0000000000000246 R12: 0000000000403ea0 [ 47.885401][ T8363] R13: 0000000000000000 R14: 00000000004b2018 R15: 00000000004004a0 [ 47.894893][ T8363] ================================================================================ [ 47.906956][ T8363] Kernel panic - not syncing: panic_on_warn set ... [ 47.913566][ T8363] CPU: 0 PID: 8363 Comm: syz-executor557 Not tainted 5.12.0-rc8-syzkaller #0 [ 47.922313][ T8363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.932368][ T8363] Call Trace: [ 47.935640][ T8363] dump_stack+0x202/0x31e [ 47.939970][ T8363] ? show_regs_print_info+0x12/0x12 [ 47.945162][ T8363] ? log_buf_vmcoreinfo_setup+0x45d/0x45d [ 47.950879][ T8363] panic+0x2e1/0x850 [ 47.954768][ T8363] ? __ubsan_handle_out_of_bounds+0x100/0x130 [ 47.960902][ T8363] ? nmi_panic+0x90/0x90 [ 47.965134][ T8363] ? log_buf_vmcoreinfo_setup+0x45d/0x45d [ 47.970885][ T8363] ? smk_access+0x480/0x480 [ 47.975386][ T8363] ? smk_access+0x44b/0x480 [ 47.979875][ T8363] __ubsan_handle_out_of_bounds+0x12b/0x130 [ 47.985751][ T8363] ? smk_tskacc+0x300/0x370 [ 47.990249][ T8363] udf_statfs+0x49f/0xd70 [ 47.994579][ T8363] ? udf_sync_fs+0x360/0x360 [ 47.999158][ T8363] ? strncpy_from_user+0x1f6/0x350 [ 48.004254][ T8363] vfs_statfs+0x136/0x310 [ 48.008577][ T8363] __se_sys_statfs+0xe5/0x210 [ 48.013235][ T8363] ? __x64_sys_statfs+0x60/0x60 [ 48.018063][ T8363] ? __context_tracking_exit+0x7a/0xd0 [ 48.023514][ T8363] ? __lock_acquire+0x6040/0x6040 [ 48.028521][ T8363] ? lockdep_hardirqs_on_prepare+0x3e2/0x750 [ 48.034484][ T8363] ? syscall_enter_from_user_mode+0x2e/0x1c0 [ 48.040441][ T8363] ? syscall_enter_from_user_mode+0x2e/0x1c0 [ 48.046396][ T8363] do_syscall_64+0x2d/0x70 [ 48.050791][ T8363] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.056674][ T8363] RIP: 0033:0x444579 [ 48.060549][ T8363] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 48.080132][ T8363] RSP: 002b:00007ffc428d7b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000089 [ 48.088527][ T8363] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000444579 [ 48.096477][ T8363] RDX: 0000000000402b43 RSI: 0000000000000000 RDI: 00000000200001c0 [ 48.104579][ T8363] RBP: 0000000000403e10 R08: 0000000000000000 R09: 0000000000000000 [ 48.112550][ T8363] R10: 00007ffc428d7a20 R11: 0000000000000246 R12: 0000000000403ea0 [ 48.120515][ T8363] R13: 0000000000000000 R14: 00000000004b2018 R15: 00000000004004a0 [ 48.128623][ T8363] Kernel Offset: disabled [ 48.133034][ T8363] Rebooting in 86400 seconds..