[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.64' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.045946][ T8468] loop0: detected capacity change from 131391 to 0 [ 55.057928][ T8468] REISERFS (device loop0): found reiserfs format "3.6" with standard journal [ 55.067217][ T8468] REISERFS (device loop0): using ordered data mode [ 55.073720][ T8468] reiserfs: using flush barriers [ 55.080504][ T8468] 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 [ 55.101051][ T8468] REISERFS (device loop0): checking transaction log (loop0) [ 55.926033][ T8468] REISERFS (device loop0): Using rupasov hash to sort names [ 55.935316][ T8468] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 55.947836][ T8468] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 55.956638][ T8468] CPU: 0 PID: 8468 Comm: syz-executor275 Not tainted 5.11.0-rc4-syzkaller #0 [ 55.965671][ T8468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.976177][ T8468] RIP: 0010:reiserfs_security_init+0x28f/0x530 [ 55.982437][ T8468] Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 02 00 00 49 8b 87 a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 4d 02 00 00 48 83 78 68 00 0f 84 be 01 00 00 48 [ 56.002131][ T8468] RSP: 0018:ffffc9000161f970 EFLAGS: 00010212 [ 56.008182][ T8468] RAX: 0000000000000000 RBX: 0000000000000036 RCX: 000000000000000d [ 56.016144][ T8468] RDX: dffffc0000000000 RSI: 000000000000006c RDI: 0000000000000068 [ 56.024091][ T8468] RBP: ffff8880325487a0 R08: 0000000000000000 R09: ffffc9000161fa18 [ 56.032036][ T8468] R10: ffffffff81ff23f0 R11: 0000000000000000 R12: 000000000000057d [ 56.040019][ T8468] R13: ffff888022ee8000 R14: 0000000000000000 R15: ffff888028b9a000 [ 56.048059][ T8468] FS: 0000000001a30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 56.056966][ T8468] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.063615][ T8468] CR2: 000056503a0e6a78 CR3: 000000001aaca000 CR4: 0000000000350ef0 [ 56.071568][ T8468] Call Trace: [ 56.074843][ T8468] reiserfs_mkdir+0x2c9/0x980 [ 56.079532][ T8468] ? reiserfs_mknod+0x700/0x700 [ 56.084369][ T8468] ? down_write+0xdb/0x150 [ 56.088794][ T8468] ? down_write_killable_nested+0x170/0x170 [ 56.094905][ T8468] ? down_write_killable_nested+0x170/0x170 [ 56.100828][ T8468] reiserfs_xattr_init+0x4de/0xb60 [ 56.105915][ T8468] reiserfs_fill_super+0x215d/0x2e00 [ 56.111325][ T8468] ? reiserfs_remount+0x1580/0x1580 [ 56.116514][ T8468] ? lock_downgrade+0x6d0/0x6d0 [ 56.121347][ T8468] ? snprintf+0xbb/0xf0 [ 56.125531][ T8468] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 56.131230][ T8468] ? set_blocksize+0x1bb/0x400 [ 56.135989][ T8468] mount_bdev+0x34d/0x410 [ 56.140295][ T8468] ? reiserfs_remount+0x1580/0x1580 [ 56.145748][ T8468] ? reiserfs_kill_sb+0x1e0/0x1e0 [ 56.150879][ T8468] legacy_get_tree+0x105/0x220 [ 56.155688][ T8468] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.162470][ T8468] vfs_get_tree+0x89/0x2f0 [ 56.167064][ T8468] path_mount+0x13ad/0x20c0 [ 56.171548][ T8468] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.177768][ T8468] ? strncpy_from_user+0x2a0/0x3e0 [ 56.182860][ T8468] ? finish_automount+0xac0/0xac0 [ 56.188136][ T8468] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 56.194354][ T8468] ? getname_flags.part.0+0x1dd/0x4f0 [ 56.199711][ T8468] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 56.205942][ T8468] __x64_sys_mount+0x27f/0x300 [ 56.210689][ T8468] ? copy_mnt_ns+0xae0/0xae0 [ 56.215430][ T8468] ? syscall_enter_from_user_mode+0x1d/0x50 [ 56.221482][ T8468] do_syscall_64+0x2d/0x70 [ 56.225891][ T8468] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.231783][ T8468] RIP: 0033:0x447daa [ 56.235651][ T8468] 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 [ 56.255506][ T8468] RSP: 002b:00007ffe07ea0cb8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 56.263913][ T8468] RAX: ffffffffffffffda RBX: 00007ffe07ea0d10 RCX: 0000000000447daa [ 56.272307][ T8468] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe07ea0cd0 [ 56.280577][ T8468] RBP: 00007ffe07ea0cd0 R08: 00007ffe07ea0d10 R09: 0000000000000000 [ 56.288629][ T8468] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000007 [ 56.296862][ T8468] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 56.304823][ T8468] Modules linked in: [ 56.309659][ T8468] ---[ end trace 2bbee05c76810b6f ]--- [ 56.315332][ T8468] RIP: 0010:reiserfs_security_init+0x28f/0x530 [ 56.321503][ T8468] Code: 48 c1 e9 03 80 3c 11 00 0f 85 91 02 00 00 49 8b 87 a0 05 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 68 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 4d 02 00 00 48 83 78 68 00 0f 84 be 01 00 00 48 [ 56.341337][ T8468] RSP: 0018:ffffc9000161f970 EFLAGS: 00010212 [ 56.347449][ T8468] RAX: 0000000000000000 RBX: 0000000000000036 RCX: 000000000000000d [ 56.355902][ T8468] RDX: dffffc0000000000 RSI: 000000000000006c RDI: 0000000000000068 [ 56.364062][ T8468] RBP: ffff8880325487a0 R08: 0000000000000000 R09: ffffc9000161fa18 [ 56.372549][ T8468] R10: ffffffff81ff23f0 R11: 0000000000000000 R12: 000000000000057d [ 56.380698][ T8468] R13: ffff888022ee8000 R14: 0000000000000000 R15: ffff888028b9a000 [ 56.388833][ T8468] FS: 0000000001a30880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 56.397841][ T8468] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.404428][ T8468] CR2: 000056503a0e6a78 CR3: 000000001aaca000 CR4: 0000000000350ef0 [ 56.412461][ T8468] Kernel panic - not syncing: Fatal exception [ 56.421952][ T8468] Kernel Offset: disabled [ 56.426275][ T8468] Rebooting in 86400 seconds..