[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ 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... [ 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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.920543][ T6839] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 45.930074][ T6839] REISERFS (device loop0): using ordered data mode [ 45.936660][ T6839] reiserfs: using flush barriers [ 45.944970][ T6839] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 45.966144][ T6839] REISERFS (device loop0): checking transaction log (loop0) [ 47.554961][ T6839] REISERFS (device loop0): Using r5 hash to sort names [ 47.562314][ T6839] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 47.574127][ T6839] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 47.582520][ T6839] CPU: 0 PID: 6839 Comm: syz-executor191 Not tainted 5.9.0-rc7-syzkaller #0 [ 47.591280][ T6839] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.601601][ T6839] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 47.607827][ T6839] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 90 2c b9 ff 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 6a 2c b9 ff 4d 85 ed b8 a2 00 00 00 [ 47.627413][ T6839] RSP: 0018:ffffc900017b79e0 EFLAGS: 00010202 [ 47.633519][ T6839] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 47.641476][ T6839] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 47.649480][ T6839] RBP: 0000000000000000 R08: ffffffff81fbb4c4 R09: ffffffff81fbb397 [ 47.657431][ T6839] R10: 0000000000000002 R11: ffff888093f2e400 R12: ffff88807e4a2050 [ 47.665381][ T6839] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 47.673362][ T6839] FS: 0000000001e45880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 47.682355][ T6839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.688914][ T6839] CR2: 00007ff9de809ab4 CR3: 00000000a2523000 CR4: 00000000001506f0 [ 47.696864][ T6839] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.704816][ T6839] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.712792][ T6839] Call Trace: [ 47.716069][ T6839] reiserfs_mkdir+0x229/0x800 [ 47.720727][ T6839] reiserfs_xattr_init+0x346/0x750 [ 47.725975][ T6839] reiserfs_fill_super+0x2b96/0x3240 [ 47.731248][ T6839] ? vsnprintf+0x1a12/0x1aa0 [ 47.735814][ T6839] ? snprintf+0x6f/0x90 [ 47.740380][ T6839] ? set_blocksize+0x1f5/0x3c0 [ 47.745122][ T6839] mount_bdev+0x24f/0x360 [ 47.749430][ T6839] ? reiserfs_kill_sb+0x150/0x150 [ 47.754431][ T6839] legacy_get_tree+0xea/0x180 [ 47.759087][ T6839] ? remove_save_link+0x3e0/0x3e0 [ 47.764198][ T6839] vfs_get_tree+0x88/0x270 [ 47.768607][ T6839] path_mount+0x179d/0x29e0 [ 47.773174][ T6839] __se_sys_mount+0x126/0x180 [ 47.778031][ T6839] do_syscall_64+0x31/0x70 [ 47.783104][ T6839] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 47.789559][ T6839] RIP: 0033:0x447dba [ 47.793508][ T6839] 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 [ 47.813103][ T6839] RSP: 002b:00007ffce863ffb8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 47.821493][ T6839] RAX: ffffffffffffffda RBX: 00007ffce8640010 RCX: 0000000000447dba [ 47.829443][ T6839] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffce863ffd0 [ 47.837391][ T6839] RBP: 00007ffce863ffd0 R08: 00007ffce8640010 R09: 0000000000000000 [ 47.845410][ T6839] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000007 [ 47.853362][ T6839] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 47.861490][ T6839] Modules linked in: [ 47.874763][ T6839] ---[ end trace de79f45c5c134d41 ]--- [ 47.880375][ T6839] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 47.887093][ T6839] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 90 2c b9 ff 48 8b 1b 48 83 c3 68 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 6a 2c b9 ff 4d 85 ed b8 a2 00 00 00 [ 47.907160][ T6839] RSP: 0018:ffffc900017b79e0 EFLAGS: 00010202 [ 47.913256][ T6839] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 47.921829][ T6839] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 47.930482][ T6839] RBP: 0000000000000000 R08: ffffffff81fbb4c4 R09: ffffffff81fbb397 [ 47.938893][ T6839] R10: 0000000000000002 R11: ffff888093f2e400 R12: ffff88807e4a2050 [ 47.947217][ T6839] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 47.955185][ T6839] FS: 0000000001e45880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 47.964676][ T6839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.971634][ T6839] CR2: 00007f86d30eb000 CR3: 00000000a2523000 CR4: 00000000001506f0 [ 47.979975][ T6839] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.988340][ T6839] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.996310][ T6839] Kernel panic - not syncing: Fatal exception [ 48.003754][ T6839] Kernel Offset: disabled [ 48.008073][ T6839] Rebooting in 86400 seconds..