[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.614035] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 30.627867] ------------[ cut here ]------------ [ 30.632759] WARNING: CPU: 1 PID: 8015 at fs/ext4/xattr.c:1660 ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.641676] Kernel panic - not syncing: panic_on_warn set ... [ 30.641676] [ 30.649069] CPU: 1 PID: 8015 Comm: syz-executor359 Not tainted 4.14.210-syzkaller #0 [ 30.656929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.667215] Call Trace: [ 30.669826] dump_stack+0x1b2/0x283 [ 30.673433] panic+0x1f9/0x42d [ 30.676600] ? add_taint.cold+0x16/0x16 [ 30.680570] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.685406] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.690228] __warn.cold+0x20/0x4b [ 30.693745] ? ist_end_non_atomic+0x10/0x10 [ 30.698038] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.702859] report_bug+0x208/0x249 [ 30.706462] do_error_trap+0x195/0x2d0 [ 30.710322] ? math_error+0x2d0/0x2d0 [ 30.714096] ? unwind_get_return_address+0x51/0x90 [ 30.719000] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.724337] ? __save_stack_trace+0xa0/0x160 [ 30.728721] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.733540] invalid_op+0x1b/0x40 [ 30.736967] RIP: 0010:ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.742387] RSP: 0018:ffff888096ec74b0 EFLAGS: 00010297 [ 30.747726] RAX: ffff8880b2d56080 RBX: ffff8880b42816e0 RCX: 0000000000000003 [ 30.754982] RDX: 0000000000000000 RSI: ffff888096ec77a8 RDI: ffff8880a1a80460 [ 30.762225] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 30.769481] R10: 0000000000000000 R11: ffff8880b2d56080 R12: 00000000000003dc [ 30.776724] R13: ffffffff87933000 R14: 0000000000000000 R15: ffff888096ec77a8 [ 30.783986] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 30.789063] ? debug_check_no_obj_freed+0x2c0/0x674 [ 30.794068] ? ext4_xattr_inode_get+0x5d0/0x5d0 [ 30.798814] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.804241] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.809233] ? __kmalloc+0x3a4/0x400 [ 30.812917] ? ext4_xattr_block_set+0x1209/0x2af0 [ 30.817836] ext4_xattr_block_set+0x1334/0x2af0 [ 30.822485] ? __find_get_block+0x817/0xc40 [ 30.826782] ? ext4_xattr_ibody_set+0x280/0x280 [ 30.831423] ? __getblk_gfp+0x48/0x70 [ 30.835202] ? ext4_xattr_ibody_find+0x223/0x5c0 [ 30.839929] ? ext4_xattr_block_find+0x52/0x5a0 [ 30.844570] ? ext4_xattr_ibody_set+0x1bb/0x280 [ 30.849213] ext4_xattr_set_handle+0x839/0xd20 [ 30.853771] ? ext4_xattr_ibody_inline_set+0x280/0x280 [ 30.859038] ? is_bpf_text_address+0x91/0x150 [ 30.863528] ? __dquot_initialize+0x228/0xa70 [ 30.867995] ? lock_acquire+0x170/0x3f0 [ 30.871948] ? __ext4_journal_start_sb+0x105/0x3b0 [ 30.876848] ? ext4_xattr_set+0x19b/0x230 [ 30.880970] ext4_xattr_set+0x118/0x230 [ 30.884921] ? ext4_xattr_set_credits+0x1f0/0x1f0 [ 30.889741] ? kmem_cache_free+0x7c/0x2b0 [ 30.893861] ? xattr_resolve_name+0x22c/0x370 [ 30.898332] ? ext4_initxattrs+0x110/0x110 [ 30.902551] __vfs_setxattr+0xdc/0x130 [ 30.906412] ? xattr_resolve_name+0x370/0x370 [ 30.910882] ? evm_protect_xattr.constprop.0+0x6c/0x350 [ 30.916218] __vfs_setxattr_noperm+0xfd/0x3d0 [ 30.920706] __vfs_setxattr_locked+0x14d/0x250 [ 30.925262] vfs_setxattr+0xcf/0x230 [ 30.928951] ? __check_object_size+0x119/0x22c [ 30.933505] ? __vfs_setxattr_locked+0x250/0x250 [ 30.938236] ? strncpy_from_user+0x210/0x2c0 [ 30.942628] setxattr+0x1a9/0x300 [ 30.946061] ? vfs_setxattr+0x230/0x230 [ 30.950011] ? filename_lookup+0x380/0x510 [ 30.954231] ? __check_object_size+0x179/0x22c [ 30.958792] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.964217] ? preempt_count_add+0xaf/0x170 [ 30.968514] ? __mnt_want_write+0x1da/0x270 [ 30.972812] path_setxattr+0x118/0x130 [ 30.976678] ? setxattr+0x300/0x300 [ 30.980285] SyS_lsetxattr+0x33/0x40 [ 30.983979] ? SyS_setxattr+0x50/0x50 [ 30.987765] do_syscall_64+0x1d5/0x640 [ 30.991633] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.996795] RIP: 0033:0x4445f9 [ 30.999957] RSP: 002b:00007ffe015cec98 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 31.007638] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004445f9 [ 31.014969] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000080 [ 31.022211] RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 [ 31.029452] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021e0 [ 31.036695] R13: 0000000000402270 R14: 0000000000000000 R15: 0000000000000000 [ 31.044799] Kernel Offset: disabled [ 31.048470] Rebooting in 86400 seconds..