[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.046474][ T6857] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 47.056277][ T6857] REISERFS (device loop0): using ordered data mode [ 47.064629][ T6857] reiserfs: using flush barriers [ 47.071266][ T6857] 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 [ 47.091351][ T6857] REISERFS (device loop0): checking transaction log (loop0) [ 48.841078][ T6857] REISERFS (device loop0): Using tea hash to sort names [ 48.848758][ T6857] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 48.860470][ T6857] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 48.868856][ T6857] CPU: 0 PID: 6857 Comm: syz-executor572 Not tainted 5.9.0-rc7-syzkaller #0 [ 48.877514][ T6857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.887571][ T6857] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 48.893710][ T6857] 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 [ 48.913393][ T6857] RSP: 0018:ffffc900055979e0 EFLAGS: 00010202 [ 48.919432][ T6857] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 48.927393][ T6857] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 48.935339][ T6857] RBP: 0000000000000000 R08: ffffffff81fbc324 R09: ffffffff81fbc1f7 [ 48.943302][ T6857] R10: 0000000000000002 R11: ffff88809d910280 R12: ffff88807dc8f050 [ 48.951282][ T6857] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 48.959260][ T6857] FS: 0000000001412880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 48.968178][ T6857] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.974747][ T6857] CR2: 0000563099935160 CR3: 000000008ef54000 CR4: 00000000001506f0 [ 48.982707][ T6857] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.990669][ T6857] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.998614][ T6857] Call Trace: [ 49.001939][ T6857] reiserfs_mkdir+0x229/0x800 [ 49.007040][ T6857] reiserfs_xattr_init+0x346/0x750 [ 49.012157][ T6857] reiserfs_fill_super+0x2b96/0x3240 [ 49.017422][ T6857] ? vsnprintf+0x1a12/0x1aa0 [ 49.021987][ T6857] ? snprintf+0x6f/0x90 [ 49.026125][ T6857] ? set_blocksize+0x1f5/0x3c0 [ 49.030867][ T6857] mount_bdev+0x24f/0x360 [ 49.035169][ T6857] ? reiserfs_kill_sb+0x150/0x150 [ 49.040166][ T6857] legacy_get_tree+0xea/0x180 [ 49.044823][ T6857] ? remove_save_link+0x3e0/0x3e0 [ 49.049830][ T6857] vfs_get_tree+0x88/0x270 [ 49.054232][ T6857] path_mount+0x179d/0x29e0 [ 49.058729][ T6857] __se_sys_mount+0x126/0x180 [ 49.063377][ T6857] do_syscall_64+0x31/0x70 [ 49.067832][ T6857] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 49.073718][ T6857] RIP: 0033:0x447dba [ 49.077615][ T6857] 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 [ 49.097193][ T6857] RSP: 002b:00007ffeafda4458 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 49.105579][ T6857] RAX: ffffffffffffffda RBX: 00007ffeafda44b0 RCX: 0000000000447dba [ 49.113542][ T6857] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffeafda4470 [ 49.121598][ T6857] RBP: 00007ffeafda4470 R08: 00007ffeafda44b0 R09: 0000000000000000 [ 49.129551][ T6857] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000007 [ 49.137495][ T6857] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 49.145459][ T6857] Modules linked in: [ 49.159256][ T6857] ---[ end trace 2dc95189054d0382 ]--- [ 49.164749][ T6857] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 49.170893][ T6857] 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 [ 49.191373][ T6857] RSP: 0018:ffffc900055979e0 EFLAGS: 00010202 [ 49.197829][ T6857] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 49.206319][ T6857] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 49.215084][ T6857] RBP: 0000000000000000 R08: ffffffff81fbc324 R09: ffffffff81fbc1f7 [ 49.226500][ T6857] R10: 0000000000000002 R11: ffff88809d910280 R12: ffff88807dc8f050 [ 49.234876][ T6857] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 49.243270][ T6857] FS: 0000000001412880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 49.253011][ T6857] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.259596][ T6857] CR2: 00007fa096963008 CR3: 000000008ef54000 CR4: 00000000001506f0 [ 49.268146][ T6857] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.276466][ T6857] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.285093][ T6857] Kernel panic - not syncing: Fatal exception [ 49.291818][ T6857] Kernel Offset: disabled [ 49.296129][ T6857] Rebooting in 86400 seconds..