[ OK ] Found device /dev/ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ 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... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.596931][ T6880] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 43.606396][ T6880] REISERFS (device loop0): using ordered data mode [ 43.613145][ T6880] reiserfs: using flush barriers [ 43.621389][ T6880] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 43.641797][ T6880] REISERFS (device loop0): checking transaction log (loop0) [ 45.159683][ T6880] REISERFS (device loop0): Using tea hash to sort names [ 45.166816][ T6880] REISERFS (device loop0): using 3.5.x disk format [ 45.173541][ T6880] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 45.185292][ T6880] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 45.193717][ T6880] CPU: 0 PID: 6880 Comm: syz-executor719 Not tainted 5.9.0-rc7-syzkaller #0 [ 45.202350][ T6880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.212385][ T6880] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 45.218503][ T6880] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c0 20 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 9a 20 b9 ff 4d 85 ed b8 a2 00 00 00 [ 45.238073][ T6880] RSP: 0018:ffffc9000328f9e0 EFLAGS: 00010202 [ 45.244104][ T6880] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 45.252083][ T6880] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 45.260022][ T6880] RBP: 0000000000000000 R08: ffffffff81fbc324 R09: ffffffff81fbc1f7 [ 45.267963][ T6880] R10: 0000000000000002 R11: ffff88809784a140 R12: ffff88807e47b050 [ 45.275903][ T6880] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 45.283844][ T6880] FS: 0000000000e09880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 45.292778][ T6880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.299334][ T6880] CR2: 00007ffcb74c4000 CR3: 00000000a931b000 CR4: 00000000001506f0 [ 45.307317][ T6880] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.315257][ T6880] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.323197][ T6880] Call Trace: [ 45.326463][ T6880] reiserfs_mkdir+0x229/0x800 [ 45.331111][ T6880] reiserfs_xattr_init+0x346/0x750 [ 45.336199][ T6880] reiserfs_fill_super+0x2b96/0x3240 [ 45.341465][ T6880] ? vsnprintf+0x1a12/0x1aa0 [ 45.346032][ T6880] ? snprintf+0x6f/0x90 [ 45.350157][ T6880] ? set_blocksize+0x1f5/0x3c0 [ 45.354890][ T6880] mount_bdev+0x24f/0x360 [ 45.359186][ T6880] ? reiserfs_kill_sb+0x150/0x150 [ 45.364176][ T6880] legacy_get_tree+0xea/0x180 [ 45.368821][ T6880] ? remove_save_link+0x3e0/0x3e0 [ 45.373813][ T6880] vfs_get_tree+0x88/0x270 [ 45.378210][ T6880] path_mount+0x179d/0x29e0 [ 45.382681][ T6880] __se_sys_mount+0x126/0x180 [ 45.387329][ T6880] do_syscall_64+0x31/0x70 [ 45.391716][ T6880] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.397577][ T6880] RIP: 0033:0x447d9a [ 45.401439][ T6880] 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 [ 45.421106][ T6880] RSP: 002b:00007ffcb74c34c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 45.429495][ T6880] RAX: ffffffffffffffda RBX: 00007ffcb74c3520 RCX: 0000000000447d9a [ 45.437447][ T6880] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcb74c34e0 [ 45.445412][ T6880] RBP: 00007ffcb74c34e0 R08: 00007ffcb74c3520 R09: 0000000000000000 [ 45.453352][ T6880] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006 [ 45.461305][ T6880] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 45.469247][ T6880] Modules linked in: [ 45.473276][ T6880] ---[ end trace 8060493f0a941240 ]--- [ 45.478765][ T6880] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 45.484907][ T6880] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c0 20 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 9a 20 b9 ff 4d 85 ed b8 a2 00 00 00 [ 45.504554][ T6880] RSP: 0018:ffffc9000328f9e0 EFLAGS: 00010202 [ 45.510652][ T6880] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 45.518655][ T6880] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 45.526643][ T6880] RBP: 0000000000000000 R08: ffffffff81fbc324 R09: ffffffff81fbc1f7 [ 45.534594][ T6880] R10: 0000000000000002 R11: ffff88809784a140 R12: ffff88807e47b050 [ 45.542577][ T6880] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 45.550564][ T6880] FS: 0000000000e09880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 45.559507][ T6880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.566130][ T6880] CR2: 00007ffcb74c4000 CR3: 00000000a931b000 CR4: 00000000001506f0 [ 45.574089][ T6880] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.582107][ T6880] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.590099][ T6880] Kernel panic - not syncing: Fatal exception [ 45.597369][ T6880] Kernel Offset: disabled [ 45.601708][ T6880] Rebooting in 86400 seconds..