[ 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 '10.128.0.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 76.880297][ T8522] loop0: detected capacity change from 512 to 0 [ 76.911755][ T8522] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 76.928804][ T8522] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 76.957233][ T8522] ------------[ cut here ]------------ [ 76.963014][ T8522] WARNING: CPU: 1 PID: 8522 at fs/ext4/xattr.c:1640 ext4_xattr_set_entry+0x29aa/0x3780 [ 76.973048][ T8522] Modules linked in: [ 76.978796][ T8522] CPU: 1 PID: 8522 Comm: syz-executor746 Not tainted 5.10.0-rc7-next-20201210-syzkaller #0 [ 76.988960][ T8522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.999445][ T8522] RIP: 0010:ext4_xattr_set_entry+0x29aa/0x3780 [ 77.005738][ T8522] Code: 00 e9 18 db ff ff e8 45 59 59 ff 48 8b 7c 24 10 45 31 f6 e8 78 9c cc ff 4c 8b ac 24 18 01 00 00 e9 f9 da ff ff e8 26 59 59 ff <0f> 0b e9 30 e1 ff ff e8 1a 59 59 ff 48 8b 54 24 48 31 f6 4c 89 e7 [ 77.025949][ T8522] RSP: 0018:ffffc9000132f3a8 EFLAGS: 00010293 [ 77.033311][ T8522] RAX: 0000000000000000 RBX: ffff888024dc6020 RCX: 0000000000000000 [ 77.041481][ T8522] RDX: ffff888021df5100 RSI: ffffffff821943ea RDI: 0000000000000003 [ 77.049691][ T8522] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 77.057855][ T8522] R10: ffffffff82192518 R11: 0000000000000000 R12: 00000000000003dc [ 77.065848][ T8522] R13: 0000000000000000 R14: 0000000000000001 R15: ffffc9000132f6f0 [ 77.074056][ T8522] FS: 00007fe756d7e700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 77.083332][ T8522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.090497][ T8522] CR2: 00005610898f28c8 CR3: 0000000012af5000 CR4: 00000000001506f0 [ 77.098568][ T8522] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.106633][ T8522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.114614][ T8522] Call Trace: [ 77.117960][ T8522] ? find_held_lock+0x2d/0x110 [ 77.122750][ T8522] ? ext4_xattr_inode_dec_ref_all+0xa30/0xa30 [ 77.129163][ T8522] ? fs_reclaim_acquire+0xb2/0x150 [ 77.134405][ T8522] ? rcu_read_lock_sched_held+0x3a/0x70 [ 77.140400][ T8522] ? unpoison_range+0x2c/0x50 [ 77.145136][ T8522] ext4_xattr_block_set+0x837/0x2f60 [ 77.151309][ T8522] ? ext4_da_get_block_prep+0x11e0/0x11e0 [ 77.157473][ T8522] ? ext4_xattr_block_find+0x690/0x690 [ 77.162970][ T8522] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 77.169589][ T8522] ? errseq_check+0x4b/0x80 [ 77.174133][ T8522] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.181478][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.188315][ T8522] ? ext4_xattr_block_find+0x5c/0x690 [ 77.193713][ T8522] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.200906][ T8522] ext4_xattr_set_handle+0xcb6/0x1260 [ 77.206322][ T8522] ? ext4_xattr_ibody_inline_set+0x2b0/0x2b0 [ 77.213612][ T8522] ? kernel_text_address+0xbd/0xf0 [ 77.219598][ T8522] ? arch_stack_walk+0x93/0xe0 [ 77.224411][ T8522] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.231571][ T8522] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.239722][ T8522] ? ext4_journal_check_start+0x1ae/0x290 [ 77.245478][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.252177][ T8522] ext4_xattr_set+0x13a/0x340 [ 77.257782][ T8522] ? ext4_xattr_set_credits+0x200/0x200 [ 77.263629][ T8522] ? __sanitizer_cov_trace_cmp1+0x22/0x80 [ 77.270107][ T8522] ? xattr_resolve_name+0x26e/0x3d0 [ 77.275347][ T8522] ? ext4_xattr_hurd_get+0xf0/0xf0 [ 77.280879][ T8522] __vfs_setxattr+0x10e/0x170 [ 77.285731][ T8522] ? xattr_resolve_name+0x3d0/0x3d0 [ 77.291002][ T8522] ? evm_protect_xattr.constprop.0+0x95/0x3c0 [ 77.297182][ T8522] __vfs_setxattr_noperm+0x11a/0x4c0 [ 77.302484][ T8522] __vfs_setxattr_locked+0x1bf/0x250 [ 77.307818][ T8522] vfs_setxattr+0xe5/0x270 [ 77.312314][ T8522] ? __vfs_setxattr_locked+0x250/0x250 [ 77.317867][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.324123][ T8522] ? strncpy_from_user+0x2a0/0x3e0 [ 77.329293][ T8522] setxattr+0x23d/0x330 [ 77.333465][ T8522] ? vfs_setxattr+0x270/0x270 [ 77.338242][ T8522] ? filename_lookup+0x3b6/0x560 [ 77.343208][ T8522] ? lock_release+0x710/0x710 [ 77.348016][ T8522] ? preempt_count_add+0x74/0x140 [ 77.353067][ T8522] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.359395][ T8522] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.365648][ T8522] ? __mnt_want_write+0x1bc/0x2a0 [ 77.370953][ T8522] path_setxattr+0x170/0x190 [ 77.375766][ T8522] ? setxattr+0x330/0x330 [ 77.380246][ T8522] __x64_sys_lsetxattr+0xbd/0x150 [ 77.385281][ T8522] ? syscall_enter_from_user_mode+0x1d/0x50 [ 77.391285][ T8522] do_syscall_64+0x2d/0x70 [ 77.395735][ T8522] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 77.401697][ T8522] RIP: 0033:0x449bb9 [ 77.405610][ T8522] Code: fd d5 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 cb d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.425298][ T8522] RSP: 002b:00007fe756d7dd98 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 77.433819][ T8522] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000449bb9 [ 77.441910][ T8522] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 [ 77.449941][ T8522] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 77.458148][ T8522] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 77.466175][ T8522] R13: 000000010000000f R14: 000000ce0000000c R15: 0000010000000020 [ 77.474231][ T8522] Kernel panic - not syncing: panic_on_warn set ... [ 77.480812][ T8522] CPU: 0 PID: 8522 Comm: syz-executor746 Not tainted 5.10.0-rc7-next-20201210-syzkaller #0 [ 77.490812][ T8522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.500868][ T8522] Call Trace: [ 77.504135][ T8522] dump_stack+0x107/0x163 [ 77.508457][ T8522] panic+0x343/0x77f [ 77.512344][ T8522] ? __warn_printk+0xf3/0xf3 [ 77.516927][ T8522] ? __warn.cold+0x1a/0x44 [ 77.521333][ T8522] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 77.526872][ T8522] __warn.cold+0x35/0x44 [ 77.531110][ T8522] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 77.536645][ T8522] report_bug+0x1bd/0x210 [ 77.540964][ T8522] handle_bug+0x3c/0x60 [ 77.545108][ T8522] exc_invalid_op+0x14/0x40 [ 77.549702][ T8522] asm_exc_invalid_op+0x12/0x20 [ 77.554542][ T8522] RIP: 0010:ext4_xattr_set_entry+0x29aa/0x3780 [ 77.560683][ T8522] Code: 00 e9 18 db ff ff e8 45 59 59 ff 48 8b 7c 24 10 45 31 f6 e8 78 9c cc ff 4c 8b ac 24 18 01 00 00 e9 f9 da ff ff e8 26 59 59 ff <0f> 0b e9 30 e1 ff ff e8 1a 59 59 ff 48 8b 54 24 48 31 f6 4c 89 e7 [ 77.580288][ T8522] RSP: 0018:ffffc9000132f3a8 EFLAGS: 00010293 [ 77.586342][ T8522] RAX: 0000000000000000 RBX: ffff888024dc6020 RCX: 0000000000000000 [ 77.594312][ T8522] RDX: ffff888021df5100 RSI: ffffffff821943ea RDI: 0000000000000003 [ 77.602964][ T8522] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 77.610936][ T8522] R10: ffffffff82192518 R11: 0000000000000000 R12: 00000000000003dc [ 77.619081][ T8522] R13: 0000000000000000 R14: 0000000000000001 R15: ffffc9000132f6f0 [ 77.627050][ T8522] ? ext4_xattr_set_entry+0xad8/0x3780 [ 77.632529][ T8522] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 77.638066][ T8522] ? ext4_xattr_set_entry+0x29aa/0x3780 [ 77.643609][ T8522] ? find_held_lock+0x2d/0x110 [ 77.648358][ T8522] ? ext4_xattr_inode_dec_ref_all+0xa30/0xa30 [ 77.654414][ T8522] ? fs_reclaim_acquire+0xb2/0x150 [ 77.659540][ T8522] ? rcu_read_lock_sched_held+0x3a/0x70 [ 77.665087][ T8522] ? unpoison_range+0x2c/0x50 [ 77.669755][ T8522] ext4_xattr_block_set+0x837/0x2f60 [ 77.675030][ T8522] ? ext4_da_get_block_prep+0x11e0/0x11e0 [ 77.680740][ T8522] ? ext4_xattr_block_find+0x690/0x690 [ 77.686192][ T8522] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 77.691903][ T8522] ? errseq_check+0x4b/0x80 [ 77.696405][ T8522] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.702650][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.708894][ T8522] ? ext4_xattr_block_find+0x5c/0x690 [ 77.714267][ T8522] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.720498][ T8522] ext4_xattr_set_handle+0xcb6/0x1260 [ 77.725878][ T8522] ? ext4_xattr_ibody_inline_set+0x2b0/0x2b0 [ 77.731844][ T8522] ? kernel_text_address+0xbd/0xf0 [ 77.736948][ T8522] ? arch_stack_walk+0x93/0xe0 [ 77.741705][ T8522] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.747931][ T8522] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.754157][ T8522] ? ext4_journal_check_start+0x1ae/0x290 [ 77.759865][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.766096][ T8522] ext4_xattr_set+0x13a/0x340 [ 77.770781][ T8522] ? ext4_xattr_set_credits+0x200/0x200 [ 77.776314][ T8522] ? __sanitizer_cov_trace_cmp1+0x22/0x80 [ 77.782023][ T8522] ? xattr_resolve_name+0x26e/0x3d0 [ 77.787215][ T8522] ? ext4_xattr_hurd_get+0xf0/0xf0 [ 77.792311][ T8522] __vfs_setxattr+0x10e/0x170 [ 77.797005][ T8522] ? xattr_resolve_name+0x3d0/0x3d0 [ 77.802278][ T8522] ? evm_protect_xattr.constprop.0+0x95/0x3c0 [ 77.808338][ T8522] __vfs_setxattr_noperm+0x11a/0x4c0 [ 77.813611][ T8522] __vfs_setxattr_locked+0x1bf/0x250 [ 77.818899][ T8522] vfs_setxattr+0xe5/0x270 [ 77.823303][ T8522] ? __vfs_setxattr_locked+0x250/0x250 [ 77.828748][ T8522] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.834974][ T8522] ? strncpy_from_user+0x2a0/0x3e0 [ 77.840085][ T8522] setxattr+0x23d/0x330 [ 77.844237][ T8522] ? vfs_setxattr+0x270/0x270 [ 77.848913][ T8522] ? filename_lookup+0x3b6/0x560 [ 77.853850][ T8522] ? lock_release+0x710/0x710 [ 77.858519][ T8522] ? preempt_count_add+0x74/0x140 [ 77.863529][ T8522] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 77.869799][ T8522] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.876141][ T8522] ? __mnt_want_write+0x1bc/0x2a0 [ 77.881160][ T8522] path_setxattr+0x170/0x190 [ 77.885739][ T8522] ? setxattr+0x330/0x330 [ 77.890150][ T8522] __x64_sys_lsetxattr+0xbd/0x150 [ 77.895164][ T8522] ? syscall_enter_from_user_mode+0x1d/0x50 [ 77.901049][ T8522] do_syscall_64+0x2d/0x70 [ 77.905454][ T8522] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 77.911333][ T8522] RIP: 0033:0x449bb9 [ 77.915228][ T8522] Code: fd d5 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 cb d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.934820][ T8522] RSP: 002b:00007fe756d7dd98 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd [ 77.943220][ T8522] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000449bb9 [ 77.951193][ T8522] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140 [ 77.959149][ T8522] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 77.967107][ T8522] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 77.975060][ T8522] R13: 000000010000000f R14: 000000ce0000000c R15: 0000010000000020 [ 77.983813][ T8522] Kernel Offset: disabled [ 77.988231][ T8522] Rebooting in 86400 seconds..