[ 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 '10.128.1.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.060657] EXT4-fs error (device loop0): ext4_orphan_get:1266: comm syz-executor876: bad orphan inode 17 [ 30.071222] ext4_test_bit(bit=16, block=4) = 0 [ 30.075842] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 30.085311] ------------[ cut here ]------------ [ 30.090214] WARNING: CPU: 1 PID: 8000 at fs/ext4/xattr.c:1660 ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.099173] Kernel panic - not syncing: panic_on_warn set ... [ 30.099173] [ 30.106548] CPU: 1 PID: 8000 Comm: syz-executor876 Not tainted 4.14.210-syzkaller #0 [ 30.114437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.124083] Call Trace: [ 30.126695] dump_stack+0x1b2/0x283 [ 30.130485] panic+0x1f9/0x42d [ 30.133678] ? add_taint.cold+0x16/0x16 [ 30.137645] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.142477] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.147324] __warn.cold+0x20/0x4b [ 30.150844] ? ist_end_non_atomic+0x10/0x10 [ 30.155160] ? ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.159996] report_bug+0x208/0x249 [ 30.163619] do_error_trap+0x195/0x2d0 [ 30.167503] ? math_error+0x2d0/0x2d0 [ 30.171318] ? unwind_get_return_address+0x51/0x90 [ 30.176323] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.181686] ? __save_stack_trace+0xa0/0x160 [ 30.186081] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.190914] invalid_op+0x1b/0x40 [ 30.194357] RIP: 0010:ext4_xattr_set_entry+0x24c1/0x30f0 [ 30.199791] RSP: 0018:ffff88809a0bf4b0 EFLAGS: 00010297 [ 30.205137] RAX: ffff8880b28ee540 RBX: ffff8880b2950060 RCX: 0000000000000005 [ 30.212395] RDX: 0000000000000000 RSI: ffff88809a0bf7a8 RDI: ffff8880974c3460 [ 30.219668] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 30.226927] R10: 0000000000000000 R11: ffff8880b28ee540 R12: 00000000000003dc [ 30.234179] R13: ffffffff87933000 R14: 0000000000000000 R15: ffff88809a0bf7a8 [ 30.241467] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 30.246564] ? debug_check_no_obj_freed+0x2c0/0x674 [ 30.251591] ? ext4_xattr_inode_get+0x5d0/0x5d0 [ 30.256381] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.261841] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.266853] ? __kmalloc+0x3a4/0x400 [ 30.270664] ? ext4_xattr_block_set+0x1209/0x2af0 [ 30.275522] ext4_xattr_block_set+0x1334/0x2af0 [ 30.280190] ? __find_get_block+0x817/0xc40 [ 30.284495] ? ext4_xattr_ibody_set+0x280/0x280 [ 30.289168] ? __getblk_gfp+0x48/0x70 [ 30.292959] ? ext4_xattr_ibody_find+0x223/0x5c0 [ 30.297693] ? ext4_xattr_block_find+0x52/0x5a0 [ 30.302340] ? ext4_xattr_ibody_set+0x1bb/0x280 [ 30.306988] ext4_xattr_set_handle+0x839/0xd20 [ 30.311576] ? ext4_xattr_ibody_inline_set+0x280/0x280 [ 30.316854] ? is_bpf_text_address+0x91/0x150 [ 30.321351] ? __dquot_initialize+0x228/0xa70 [ 30.325845] ? lock_acquire+0x170/0x3f0 [ 30.329813] ? __ext4_journal_start_sb+0x105/0x3b0 [ 30.334719] ? ext4_xattr_set+0x19b/0x230 [ 30.338870] ext4_xattr_set+0x118/0x230 [ 30.342838] ? ext4_xattr_set_credits+0x1f0/0x1f0 [ 30.347665] ? kmem_cache_free+0x7c/0x2b0 [ 30.351806] ? xattr_resolve_name+0x22c/0x370 [ 30.356280] ? ext4_xattr_inode_update_ref.cold+0x119/0x119 [ 30.361976] __vfs_setxattr+0xdc/0x130 [ 30.365856] ? xattr_resolve_name+0x370/0x370 [ 30.370331] ? evm_protect_xattr.constprop.0+0x6c/0x350 [ 30.375685] __vfs_setxattr_noperm+0xfd/0x3d0 [ 30.380173] __vfs_setxattr_locked+0x14d/0x250 [ 30.384795] vfs_setxattr+0xcf/0x230 [ 30.388493] ? __check_object_size+0x119/0x22c [ 30.393063] ? __vfs_setxattr_locked+0x250/0x250 [ 30.397803] ? strncpy_from_user+0x210/0x2c0 [ 30.402202] setxattr+0x1a9/0x300 [ 30.405656] ? vfs_setxattr+0x230/0x230 [ 30.410412] ? filename_lookup+0x380/0x510 [ 30.414683] ? __check_object_size+0x179/0x22c [ 30.419259] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.424710] ? preempt_count_add+0xaf/0x170 [ 30.429031] ? __mnt_want_write+0x1da/0x270 [ 30.433347] path_setxattr+0x118/0x130 [ 30.437223] ? setxattr+0x300/0x300 [ 30.440857] SyS_lsetxattr+0x33/0x40 [ 30.444546] ? SyS_setxattr+0x50/0x50 [ 30.448342] do_syscall_64+0x1d5/0x640 [ 30.452219] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.457411] RIP: 0033:0x444629 [ 30.460591] RSP: 002b:00007ffc53694748 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 30.468290] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000444629 [ 30.475539] RDX: 0000000000000000 RSI: 00000000200009c0 RDI: 0000000020000980 [ 30.482788] RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 [ 30.490065] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402210 [ 30.497434] R13: 00000000004022a0 R14: 0000000000000000 R15: 0000000000000000 [ 30.505305] Kernel Offset: disabled [ 30.509011] Rebooting in 86400 seconds..