[ 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 '10.128.0.148' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.339283][ T6870] REISERFS (device loop0): found reiserfs format "3.6" with standard journal [ 61.348554][ T6870] REISERFS (device loop0): using ordered data mode [ 61.356410][ T6870] reiserfs: using flush barriers [ 61.362732][ T6870] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 61.382391][ T6870] REISERFS (device loop0): checking transaction log (loop0) [ 62.315902][ T6870] REISERFS (device loop0): Using tea hash to sort names [ 62.323387][ T6870] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 62.335073][ T6870] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 62.343455][ T6870] CPU: 0 PID: 6870 Comm: syz-executor567 Not tainted 5.9.0-rc8-syzkaller #0 [ 62.352121][ T6870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.362158][ T6870] RIP: 0010:open_xa_dir+0xf6/0x690 [ 62.367242][ T6870] Code: 48 c1 ea 03 80 3c 02 00 0f 85 d2 04 00 00 4c 8b ad 98 05 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 75 68 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 be 04 00 00 49 8b 6d 68 4c 89 04 24 48 85 ed 0f [ 62.386819][ T6870] RSP: 0018:ffffc900026d7770 EFLAGS: 00010202 [ 62.392853][ T6870] RAX: dffffc0000000000 RBX: ffff88808534d7e0 RCX: ffffffff8200534e [ 62.400797][ T6870] RDX: 000000000000000d RSI: ffffffff82002926 RDI: ffff88809e39b598 [ 62.408785][ T6870] RBP: ffff88809e39b000 R08: ffff8880931a6668 R09: ffff88808534d7f7 [ 62.416727][ T6870] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920004daef0 [ 62.424670][ T6870] R13: 0000000000000000 R14: 0000000000000068 R15: ffff8880931a6000 [ 62.432647][ T6870] FS: 0000000000a09880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 62.441545][ T6870] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.448098][ T6870] CR2: 000055dafd2a84a8 CR3: 00000000a3d25000 CR4: 00000000001506f0 [ 62.456043][ T6870] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.463991][ T6870] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.471932][ T6870] Call Trace: [ 62.475201][ T6870] ? xattr_mkdir.constprop.0+0xd0/0xd0 [ 62.480647][ T6870] ? lock_is_held_type+0xbb/0xf0 [ 62.485580][ T6870] ? find_held_lock+0x2d/0x110 [ 62.490316][ T6870] ? get_cached_acl+0x3a9/0x520 [ 62.495139][ T6870] xattr_lookup+0x21/0x3c0 [ 62.499539][ T6870] ? reiserfs_set_acl+0x600/0x600 [ 62.504535][ T6870] reiserfs_xattr_get+0x9d/0x9a0 [ 62.509453][ T6870] ? get_cached_acl+0x3cb/0x520 [ 62.514309][ T6870] ? reiserfs_set_acl+0x600/0x600 [ 62.519302][ T6870] reiserfs_get_acl+0x57/0x660 [ 62.524043][ T6870] ? reiserfs_set_acl+0x600/0x600 [ 62.529048][ T6870] get_acl+0x15c/0x360 [ 62.533092][ T6870] generic_permission+0x437/0x550 [ 62.538088][ T6870] reiserfs_permission+0x64/0x80 [ 62.542998][ T6870] ? reiserfs_listxattr+0x2e0/0x2e0 [ 62.548166][ T6870] inode_permission.part.0+0x270/0x410 [ 62.553594][ T6870] lookup_one_len_common+0x279/0x3a0 [ 62.558853][ T6870] lookup_one_len+0xe6/0x190 [ 62.563415][ T6870] ? try_lookup_one_len+0x180/0x180 [ 62.568588][ T6870] ? down_write_killable+0x170/0x170 [ 62.573849][ T6870] reiserfs_lookup_privroot+0x92/0x280 [ 62.579294][ T6870] reiserfs_fill_super+0x211b/0x2df3 [ 62.584551][ T6870] ? reiserfs_remount+0x1580/0x1580 [ 62.589720][ T6870] ? lock_downgrade+0x830/0x830 [ 62.594542][ T6870] ? snprintf+0xbb/0xf0 [ 62.598671][ T6870] ? wait_for_completion+0x260/0x260 [ 62.603941][ T6870] ? set_blocksize+0x1c1/0x400 [ 62.608686][ T6870] mount_bdev+0x32e/0x3f0 [ 62.612989][ T6870] ? reiserfs_remount+0x1580/0x1580 [ 62.618159][ T6870] ? reiserfs_kill_sb+0x1e0/0x1e0 [ 62.623152][ T6870] legacy_get_tree+0x105/0x220 [ 62.627892][ T6870] vfs_get_tree+0x89/0x2f0 [ 62.632296][ T6870] path_mount+0x1387/0x20a0 [ 62.636773][ T6870] ? strncpy_from_user+0x2bf/0x3e0 [ 62.641853][ T6870] ? copy_mount_string+0x40/0x40 [ 62.646761][ T6870] ? getname_flags.part.0+0x1dd/0x4f0 [ 62.652104][ T6870] __x64_sys_mount+0x27f/0x300 [ 62.656852][ T6870] ? copy_mnt_ns+0xa60/0xa60 [ 62.661415][ T6870] ? check_preemption_disabled+0x50/0x130 [ 62.667107][ T6870] ? syscall_enter_from_user_mode+0x1d/0x60 [ 62.672973][ T6870] do_syscall_64+0x2d/0x70 [ 62.677363][ T6870] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.683254][ T6870] RIP: 0033:0x447dba [ 62.687128][ T6870] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d a3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 62.706701][ T6870] RSP: 002b:00007ffeebb723c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 62.715093][ T6870] RAX: ffffffffffffffda RBX: 00007ffeebb72420 RCX: 0000000000447dba [ 62.723036][ T6870] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffeebb723e0 [ 62.730994][ T6870] RBP: 00007ffeebb723e0 R08: 00007ffeebb72420 R09: 0000000000000000 [ 62.738938][ T6870] R10: 0000000000010000 R11: 0000000000000297 R12: 0000000000000007 [ 62.746895][ T6870] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 62.754839][ T6870] Modules linked in: [ 62.759177][ T6870] ---[ end trace b1df98a907ff27e6 ]--- [ 62.764698][ T6870] RIP: 0010:open_xa_dir+0xf6/0x690 [ 62.769806][ T6870] Code: 48 c1 ea 03 80 3c 02 00 0f 85 d2 04 00 00 4c 8b ad 98 05 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 75 68 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 be 04 00 00 49 8b 6d 68 4c 89 04 24 48 85 ed 0f [ 62.789463][ T6870] RSP: 0018:ffffc900026d7770 EFLAGS: 00010202 [ 62.795572][ T6870] RAX: dffffc0000000000 RBX: ffff88808534d7e0 RCX: ffffffff8200534e [ 62.803519][ T6870] RDX: 000000000000000d RSI: ffffffff82002926 RDI: ffff88809e39b598 [ 62.811502][ T6870] RBP: ffff88809e39b000 R08: ffff8880931a6668 R09: ffff88808534d7f7 [ 62.819492][ T6870] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920004daef0 [ 62.827492][ T6870] R13: 0000000000000000 R14: 0000000000000068 R15: ffff8880931a6000 [ 62.835509][ T6870] FS: 0000000000a09880(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 [ 62.844473][ T6870] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.851037][ T6870] CR2: 000055dafd2a84a8 CR3: 00000000a3d25000 CR4: 00000000001506f0 [ 62.859035][ T6870] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.867060][ T6870] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.875044][ T6870] Kernel panic - not syncing: Fatal exception [ 62.882309][ T6870] Kernel Offset: disabled [ 62.886633][ T6870] Rebooting in 86400 seconds..