[ OK ] Started Getty on tty1. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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 '10.128.10.63' (ECDSA) to the list of known hosts. syzkaller login: [ 33.855658] IPVS: ftp: loaded support on port[0] = 21 executing program [ 33.929585] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) [ 33.953178] WARNING: CPU: 1 PID: 8113 at fs/udf/udfdecl.h:122 udf_free_inode+0x29b/0x320 [ 33.961721] Kernel panic - not syncing: panic_on_warn set ... [ 33.961721] [ 33.969656] CPU: 1 PID: 8113 Comm: syz-executor263 Not tainted 4.19.211-syzkaller #0 [ 33.977532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 33.986877] Call Trace: [ 33.989516] dump_stack+0x1fc/0x2ef [ 33.993172] panic+0x26a/0x50e [ 33.996442] ? __warn_printk+0xf3/0xf3 [ 34.000413] ? udf_free_inode+0x29b/0x320 [ 34.004557] ? __probe_kernel_read+0x130/0x1b0 [ 34.009315] ? __warn.cold+0x5/0x5a [ 34.012931] ? __warn+0xe4/0x200 [ 34.016289] ? udf_free_inode+0x29b/0x320 [ 34.020418] __warn.cold+0x20/0x5a [ 34.024045] ? udf_free_inode+0x29b/0x320 [ 34.028173] report_bug+0x262/0x2b0 [ 34.031826] do_error_trap+0x1d7/0x310 [ 34.035708] ? math_error+0x310/0x310 [ 34.039512] ? error_entry+0x72/0xd0 [ 34.043227] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.048248] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.053082] invalid_op+0x14/0x20 [ 34.056533] RIP: 0010:udf_free_inode+0x29b/0x320 [ 34.061275] Code: 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 29 83 6d 24 01 e9 76 fe ff ff e8 3c 25 f4 fe 0f 0b e8 35 25 f4 fe <0f> 0b e9 4e ff ff ff 48 89 df e8 f6 00 2a ff e9 fc fd ff ff e8 7c [ 34.080251] RSP: 0018:ffff8880b15efa58 EFLAGS: 00010293 [ 34.085706] RAX: ffff888096a7a580 RBX: ffff88808b094bc0 RCX: ffffffff826e5f87 [ 34.092955] RDX: 0000000000000000 RSI: ffffffff826e603b RDI: 0000000000000005 [ 34.100221] RBP: ffff8880b0c877c0 R08: 0000000000000000 R09: 0000000000000000 [ 34.107470] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b00aaac0 [ 34.114751] R13: ffff8880b0c87878 R14: 0000000000000001 R15: ffff8880b00ab140 [ 34.122048] ? udf_free_inode+0x1e7/0x320 [ 34.126267] ? udf_free_inode+0x29b/0x320 [ 34.130423] ? udf_free_inode+0x29b/0x320 [ 34.134571] udf_evict_inode+0x350/0x590 [ 34.138614] ? udf_setsize+0x1030/0x1030 [ 34.142659] evict+0x2ed/0x760 [ 34.145832] iput+0x4f1/0x860 [ 34.148919] udf_sb_free_partitions.isra.0+0x751/0xba0 [ 34.154182] udf_put_super+0x172/0x290 [ 34.158053] ? udf_sb_free_partitions.isra.0+0xba0/0xba0 [ 34.163483] generic_shutdown_super+0x144/0x370 [ 34.168154] kill_block_super+0x97/0xf0 [ 34.172325] deactivate_locked_super+0x94/0x160 [ 34.176986] deactivate_super+0x174/0x1a0 [ 34.181149] ? deactivate_locked_super+0x160/0x160 [ 34.186064] ? dput+0x31/0x640 [ 34.189238] cleanup_mnt+0x1a8/0x290 [ 34.192935] task_work_run+0x148/0x1c0 [ 34.196806] do_exit+0xbf3/0x2be0 [ 34.200244] ? lock_downgrade+0x720/0x720 [ 34.204373] ? mm_update_next_owner+0x650/0x650 [ 34.209028] ? up_read+0x17/0x110 [ 34.212541] ? __do_page_fault+0x180/0xd60 [ 34.216767] do_group_exit+0x125/0x310 [ 34.220645] __x64_sys_exit_group+0x3a/0x50 [ 34.224953] do_syscall_64+0xf9/0x620 [ 34.228745] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.233915] RIP: 0033:0x7fb1685b9c39 [ 34.237611] Code: Bad RIP value. [ 34.240959] RSP: 002b:00007ffd8f11f858 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 34.248657] RAX: ffffffffffffffda RBX: 00007fb1686303f0 RCX: 00007fb1685b9c39 [ 34.255991] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 34.263241] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007fb16862ae40 [ 34.270493] R10: 00007fb16862ae40 R11: 0000000000000246 R12: 00007fb1686303f0 [ 34.277739] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 34.285442] Kernel Offset: disabled [ 34.289185] Rebooting in 86400 seconds..