[ 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 '10.128.10.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.029833] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 34.045205] WARNING: CPU: 1 PID: 8120 at fs/ext4/xattr.c:1661 ext4_xattr_set_entry+0x2910/0x3690 [ 34.054218] Kernel panic - not syncing: panic_on_warn set ... [ 34.054218] [ 34.061586] CPU: 1 PID: 8120 Comm: syz-executor414 Not tainted 4.19.152-syzkaller #0 [ 34.069461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.078831] Call Trace: [ 34.081400] dump_stack+0x1fc/0x2fe [ 34.085009] panic+0x26a/0x50e [ 34.088183] ? __warn_printk+0xf3/0xf3 [ 34.092056] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.096895] ? __probe_kernel_read+0x130/0x1b0 [ 34.101453] ? __warn.cold+0x5/0x61 [ 34.105057] ? __warn+0xe4/0x200 [ 34.108402] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.113223] __warn.cold+0x20/0x61 [ 34.116744] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.121564] report_bug+0x262/0x2b0 [ 34.125171] do_error_trap+0x1d7/0x310 [ 34.129037] ? math_error+0x310/0x310 [ 34.132815] ? is_bpf_text_address+0xfc/0x1b0 [ 34.137288] ? kernel_text_address+0xbd/0xf0 [ 34.141673] ? __kernel_text_address+0x9/0x30 [ 34.146404] ? error_entry+0x72/0xd0 [ 34.150098] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.155091] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.159916] invalid_op+0x14/0x20 [ 34.163349] RIP: 0010:ext4_xattr_set_entry+0x2910/0x3690 [ 34.168776] Code: e8 d5 2b 72 ff 48 8b 7c 24 20 e8 7b f3 ce ff 4c 8b b4 24 20 01 00 00 48 c7 44 24 18 00 00 00 00 e9 b2 db ff ff e8 b0 2b 72 ff <0f> 0b e9 fb e7 ff ff e8 a4 2b 72 ff 48 8b 7c 24 18 e8 3a 94 f0 ff [ 34.187655] RSP: 0018:ffff8880a24c73a8 EFLAGS: 00010293 [ 34.192997] RAX: ffff8880a48c2540 RBX: ffff8880abab36a0 RCX: ffffffff81f288f9 [ 34.200244] RDX: 0000000000000000 RSI: ffffffff81f2a100 RDI: 0000000000000007 [ 34.207489] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 34.214734] R10: 0000000000000007 R11: 00000000f991074c R12: 00000000000003dc [ 34.221997] R13: 0000000000000000 R14: 00000000ffffffc3 R15: 0000000000000001 [ 34.229270] ? ext4_xattr_set_entry+0x1109/0x3690 [ 34.234103] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.238939] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.243768] ? lock_downgrade+0x720/0x720 [ 34.247895] ? debug_check_no_obj_freed+0xb5/0x482 [ 34.252804] ? ext4_xattr_inode_get+0x680/0x680 [ 34.257456] ? check_preemption_disabled+0x41/0x280 [ 34.262470] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.267464] ? __kmalloc+0x38e/0x3c0 [ 34.271155] ? ext4_xattr_block_set+0xe19/0x2eb0 [ 34.275891] ext4_xattr_block_set+0xf44/0x2eb0 [ 34.280468] ? ext4_xattr_ibody_set+0x2a0/0x2a0 [ 34.285130] ? __getblk_gfp+0x48/0x70 [ 34.288937] ? ext4_xattr_ibody_find+0x253/0x540 [ 34.293673] ? ext4_xattr_block_find+0x5c/0x6c0 [ 34.298328] ext4_xattr_set_handle+0x9c1/0xfa0 [ 34.302893] ? ext4_xattr_ibody_inline_set+0x2a0/0x2a0 [ 34.309108] ? __save_stack_trace+0x72/0x190 [ 34.313639] ? ext4_journal_check_start+0x185/0x220 [ 34.318684] ? ext4_get_nojournal+0x53/0xb0 [ 34.322990] ? __ext4_journal_start_sb+0x12d/0x3f0 [ 34.327904] ext4_xattr_set+0x135/0x2a0 [ 34.331880] ? ext4_xattr_set_credits+0x200/0x200 [ 34.336712] ? check_preemption_disabled+0x41/0x280 [ 34.341723] ? mark_held_locks+0xf0/0xf0 [ 34.345774] ? xattr_resolve_name+0x26e/0x3d0 [ 34.350266] ? ext4_get_inode_usage.cold+0x19/0x19 [ 34.355187] __vfs_setxattr+0x10e/0x170 [ 34.359143] ? xattr_resolve_name+0x3d0/0x3d0 [ 34.363619] ? evm_protect_xattr.constprop.0+0x99/0x3d0 [ 34.368976] __vfs_setxattr_noperm+0x11a/0x420 [ 34.373561] __vfs_setxattr_locked+0x176/0x250 [ 34.378131] vfs_setxattr+0xe5/0x270 [ 34.382084] ? __vfs_setxattr_locked+0x250/0x250 [ 34.386823] ? strncpy_from_user+0x2a2/0x350 [ 34.391224] setxattr+0x23d/0x330 [ 34.394655] ? vfs_setxattr+0x270/0x270 [ 34.398611] ? filename_lookup+0x3d5/0x5a0 [ 34.402825] ? fs_reclaim_release+0xd0/0x110 [ 34.407215] ? lock_acquire+0x170/0x3c0 [ 34.411176] ? check_preemption_disabled+0x41/0x280 [ 34.416176] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.421175] ? preempt_count_add+0xaf/0x190 [ 34.425476] ? __mnt_want_write+0x22c/0x2c0 [ 34.429793] path_setxattr+0x170/0x190 [ 34.433673] ? __se_sys_fsetxattr+0x1b0/0x1b0 [ 34.438180] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.443534] __x64_sys_lsetxattr+0xbd/0x150 [ 34.447846] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.452406] do_syscall_64+0xf9/0x620 [ 34.456199] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.461367] RIP: 0033:0x4445a9 [ 34.464539] Code: 8d d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 5b d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 34.483419] RSP: 002b:00007fff49653dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 34.491107] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004445a9 [ 34.498355] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 [ 34.505611] RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 [ 34.512869] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 34.520124] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 34.528079] Kernel Offset: disabled [ 34.531740] Rebooting in 86400 seconds..