[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.249' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.481033] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 34.490367] WARNING: CPU: 1 PID: 8132 at fs/ext4/xattr.c:1661 ext4_xattr_set_entry+0x2910/0x3690 [ 34.499402] Kernel panic - not syncing: panic_on_warn set ... [ 34.499402] [ 34.506775] CPU: 1 PID: 8132 Comm: syz-executor703 Not tainted 4.19.163-syzkaller #0 [ 34.514652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.524015] Call Trace: [ 34.526609] dump_stack+0x1fc/0x2fe [ 34.530235] panic+0x26a/0x50e [ 34.533412] ? __warn_printk+0xf3/0xf3 [ 34.537286] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.542108] ? __probe_kernel_read+0x130/0x1b0 [ 34.546669] ? __warn.cold+0x5/0x61 [ 34.550272] ? __warn+0xe4/0x200 [ 34.553617] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.558438] __warn.cold+0x20/0x61 [ 34.561958] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.566792] report_bug+0x262/0x2b0 [ 34.570408] do_error_trap+0x1d7/0x310 [ 34.574276] ? math_error+0x310/0x310 [ 34.578054] ? is_bpf_text_address+0xfc/0x1b0 [ 34.582577] ? kernel_text_address+0xbd/0xf0 [ 34.586963] ? __kernel_text_address+0x9/0x30 [ 34.591445] ? error_entry+0x72/0xd0 [ 34.595153] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.600150] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.604972] invalid_op+0x14/0x20 [ 34.608406] RIP: 0010:ext4_xattr_set_entry+0x2910/0x3690 [ 34.613836] Code: e8 f5 1e 72 ff 48 8b 7c 24 20 e8 2b e9 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 d0 1e 72 ff <0f> 0b e9 fb e7 ff ff e8 c4 1e 72 ff 48 8b 7c 24 18 e8 5a 8c f0 ff [ 34.632730] RSP: 0018:ffff888094ce73a8 EFLAGS: 00010293 [ 34.638082] RAX: ffff888094c94280 RBX: ffff888096520920 RCX: ffffffff81f29939 [ 34.645334] RDX: 0000000000000000 RSI: ffffffff81f2b140 RDI: 0000000000000007 [ 34.652582] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 34.659828] R10: 0000000000000007 R11: 00000000c946ea45 R12: 00000000000003dc [ 34.667076] R13: 0000000000000000 R14: 00000000ffffffc3 R15: 0000000000000001 [ 34.674339] ? ext4_xattr_set_entry+0x1109/0x3690 [ 34.679158] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.683981] ? ext4_xattr_set_entry+0x2910/0x3690 [ 34.688806] ? lock_downgrade+0x720/0x720 [ 34.692933] ? debug_check_no_obj_freed+0xb5/0x482 [ 34.697844] ? ext4_xattr_inode_get+0x680/0x680 [ 34.702493] ? check_preemption_disabled+0x41/0x280 [ 34.707493] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.712488] ? __kmalloc+0x38e/0x3c0 [ 34.716179] ? ext4_xattr_block_set+0xe19/0x2eb0 [ 34.720916] ext4_xattr_block_set+0xf44/0x2eb0 [ 34.725491] ? ext4_xattr_ibody_set+0x2a0/0x2a0 [ 34.730153] ? __getblk_gfp+0x48/0x70 [ 34.733949] ? ext4_xattr_ibody_find+0x253/0x540 [ 34.738683] ? ext4_xattr_block_find+0x5c/0x6c0 [ 34.743334] ext4_xattr_set_handle+0x9c1/0xfa0 [ 34.747895] ? ext4_xattr_ibody_inline_set+0x2a0/0x2a0 [ 34.753153] ? __save_stack_trace+0x72/0x190 [ 34.757551] ? ext4_journal_check_start+0x185/0x220 [ 34.762551] ? ext4_get_nojournal+0x53/0xb0 [ 34.766852] ? __ext4_journal_start_sb+0x12d/0x3f0 [ 34.771778] ext4_xattr_set+0x135/0x2a0 [ 34.775736] ? ext4_xattr_set_credits+0x200/0x200 [ 34.780558] ? check_preemption_disabled+0x41/0x280 [ 34.785558] ? mark_held_locks+0xf0/0xf0 [ 34.789597] ? xattr_resolve_name+0x26e/0x3d0 [ 34.794076] ? ext4_initxattrs+0x120/0x120 [ 34.798286] __vfs_setxattr+0x10e/0x170 [ 34.802257] ? xattr_resolve_name+0x3d0/0x3d0 [ 34.806733] ? evm_protect_xattr.constprop.0+0x99/0x3d0 [ 34.812090] __vfs_setxattr_noperm+0x11a/0x420 [ 34.816663] __vfs_setxattr_locked+0x176/0x250 [ 34.821234] vfs_setxattr+0xe5/0x270 [ 34.824945] ? __vfs_setxattr_locked+0x250/0x250 [ 34.829695] ? strncpy_from_user+0x2a2/0x350 [ 34.834087] setxattr+0x23d/0x330 [ 34.837521] ? vfs_setxattr+0x270/0x270 [ 34.841489] ? filename_lookup+0x3d5/0x5a0 [ 34.845709] ? __phys_addr_symbol+0x2c/0x70 [ 34.850022] ? __check_object_size+0x17b/0x3d1 [ 34.854584] ? check_preemption_disabled+0x41/0x280 [ 34.859584] ? preempt_count_add+0xaf/0x190 [ 34.863897] ? __mnt_want_write+0x22c/0x2c0 [ 34.868198] path_setxattr+0x170/0x190 [ 34.872073] ? __se_sys_fsetxattr+0x1b0/0x1b0 [ 34.876556] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.881898] __x64_sys_lsetxattr+0xbd/0x150 [ 34.886209] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.890772] do_syscall_64+0xf9/0x620 [ 34.894557] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.899725] RIP: 0033:0x4445f9 [ 34.902912] 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 [ 34.921801] RSP: 002b:00007ffc851b9308 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 34.929536] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004445f9 [ 34.936788] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000080 [ 34.944040] RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 [ 34.951290] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021e0 [ 34.958540] R13: 0000000000402270 R14: 0000000000000000 R15: 0000000000000000 [ 34.966279] Kernel Offset: disabled [ 34.969952] Rebooting in 86400 seconds..