[ OK ] Started OpenBSD Secure Shell server. [ 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 '10.128.1.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.401523][ T6851] REISERFS (device loop0): found reiserfs format "3.6" with standard journal [ 43.411789][ T6851] REISERFS (device loop0): using ordered data mode [ 43.420069][ T6851] reiserfs: using flush barriers [ 43.426345][ T6851] 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 [ 43.446222][ T6851] REISERFS (device loop0): checking transaction log (loop0) [ 44.255786][ T6851] REISERFS (device loop0): Using tea hash to sort names [ 44.263019][ T6851] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 44.274702][ T6851] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 44.283082][ T6851] CPU: 1 PID: 6851 Comm: syz-executor705 Not tainted 5.9.0-rc7-syzkaller #0 [ 44.291717][ T6851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.301747][ T6851] RIP: 0010:open_xa_dir+0xad/0x5d0 [ 44.306827][ T6851] Code: c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0b 77 b9 ff 4c 8b 2b 49 83 c5 68 4d 89 ee 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 06 00 74 08 4c 89 ef e8 e4 76 b9 ff 49 8b 7d 00 48 85 ff [ 44.326398][ T6851] RSP: 0018:ffffc90000e97870 EFLAGS: 00010202 [ 44.332489][ T6851] RAX: dffffc0000000000 RBX: ffff8880a6e11598 RCX: ffff8880a74bc080 [ 44.340471][ T6851] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880852b37e0 [ 44.348412][ T6851] RBP: ffffc90000e978e8 R08: ffffffff81fb5e96 R09: ffffffff81fbc746 [ 44.356353][ T6851] R10: 0000000000000002 R11: ffff8880a74bc080 R12: 1ffff11014d9e4cd [ 44.364294][ T6851] R13: 0000000000000068 R14: 000000000000000d R15: ffff8880a6cf2668 [ 44.372235][ T6851] FS: 00000000020a1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.381160][ T6851] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.387719][ T6851] CR2: 000000000043f290 CR3: 0000000096b7f000 CR4: 00000000001506e0 [ 44.395668][ T6851] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.403609][ T6851] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.411549][ T6851] Call Trace: [ 44.414816][ T6851] ? lock_is_held_type+0xb3/0xe0 [ 44.419727][ T6851] xattr_lookup+0x24/0x280 [ 44.424116][ T6851] reiserfs_xattr_get+0x89/0x540 [ 44.429025][ T6851] ? rcu_lock_release+0x5/0x20 [ 44.433774][ T6851] reiserfs_get_acl+0x63/0x690 [ 44.438519][ T6851] ? get_cached_acl+0x4bd/0x4f0 [ 44.443338][ T6851] get_acl+0x152/0x2e0 [ 44.447375][ T6851] generic_permission+0x2ba/0x550 [ 44.452395][ T6851] ? open_xa_dir+0x5d0/0x5d0 [ 44.456953][ T6851] inode_permission+0x234/0x4a0 [ 44.461785][ T6851] lookup_one_len+0xa6/0x200 [ 44.466358][ T6851] reiserfs_lookup_privroot+0x85/0x1e0 [ 44.471786][ T6851] reiserfs_fill_super+0x2b51/0x3240 [ 44.477047][ T6851] ? vsnprintf+0x1a12/0x1aa0 [ 44.481612][ T6851] ? snprintf+0x6f/0x90 [ 44.485747][ T6851] ? set_blocksize+0x1f5/0x3c0 [ 44.490483][ T6851] mount_bdev+0x24f/0x360 [ 44.494781][ T6851] ? reiserfs_kill_sb+0x150/0x150 [ 44.499772][ T6851] legacy_get_tree+0xea/0x180 [ 44.504416][ T6851] ? remove_save_link+0x3e0/0x3e0 [ 44.509408][ T6851] vfs_get_tree+0x88/0x270 [ 44.513801][ T6851] path_mount+0x179d/0x29e0 [ 44.518275][ T6851] __se_sys_mount+0x126/0x180 [ 44.522922][ T6851] do_syscall_64+0x31/0x70 [ 44.527310][ T6851] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 44.533173][ T6851] RIP: 0033:0x447dba [ 44.537050][ T6851] 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 [ 44.556662][ T6851] RSP: 002b:00007ffdc5bb7dd8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 44.565055][ T6851] RAX: ffffffffffffffda RBX: 00007ffdc5bb7e30 RCX: 0000000000447dba [ 44.572994][ T6851] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdc5bb7df0 [ 44.580940][ T6851] RBP: 00007ffdc5bb7df0 R08: 00007ffdc5bb7e30 R09: 0000000000000000 [ 44.588889][ T6851] R10: 0000000000010000 R11: 0000000000000297 R12: 0000000000000007 [ 44.596833][ T6851] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 44.604779][ T6851] Modules linked in: [ 44.609951][ T6851] ---[ end trace 5bf17987eca6218c ]--- [ 44.615416][ T6851] RIP: 0010:open_xa_dir+0xad/0x5d0 [ 44.620590][ T6851] Code: c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0b 77 b9 ff 4c 8b 2b 49 83 c5 68 4d 89 ee 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 06 00 74 08 4c 89 ef e8 e4 76 b9 ff 49 8b 7d 00 48 85 ff [ 44.640288][ T6851] RSP: 0018:ffffc90000e97870 EFLAGS: 00010202 [ 44.646337][ T6851] RAX: dffffc0000000000 RBX: ffff8880a6e11598 RCX: ffff8880a74bc080 [ 44.654355][ T6851] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880852b37e0 [ 44.662363][ T6851] RBP: ffffc90000e978e8 R08: ffffffff81fb5e96 R09: ffffffff81fbc746 [ 44.670350][ T6851] R10: 0000000000000002 R11: ffff8880a74bc080 R12: 1ffff11014d9e4cd [ 44.678473][ T6851] R13: 0000000000000068 R14: 000000000000000d R15: ffff8880a6cf2668 [ 44.686429][ T6851] FS: 00000000020a1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.695372][ T6851] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.701984][ T6851] CR2: 00007f8a9403b188 CR3: 0000000096b7f000 CR4: 00000000001506e0 [ 44.709974][ T6851] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.718008][ T6851] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.725976][ T6851] Kernel panic - not syncing: Fatal exception [ 44.733249][ T6851] Kernel Offset: disabled [ 44.737586][ T6851] Rebooting in 86400 seconds..