[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.547135] audit: type=1400 audit(1601616161.965:8): avc: denied { execmem } for pid=6488 comm="syz-executor696" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 39.577178] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 39.585783] REISERFS (device loop0): using ordered data mode [ 39.591580] reiserfs: using flush barriers [ 39.599015] REISERFS (device loop0): journal params: device loop0, size 8192, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 [ 39.617327] REISERFS (device loop0): checking transaction log (loop0) [ 40.381432] REISERFS (device loop0): Using rupasov hash to sort names [ 40.389159] REISERFS (device loop0): using 3.5.x disk format [ 40.395753] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 40.403762] PGD a0bab067 P4D a0bab067 PUD a4d46067 PMD 0 [ 40.409291] Oops: 0010 [#1] PREEMPT SMP KASAN [ 40.413799] CPU: 1 PID: 6489 Comm: syz-executor696 Not tainted 4.19.149-syzkaller #0 [ 40.421680] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.431013] RIP: 0010: (null) [ 40.434928] Code: Bad RIP value. [ 40.438282] RSP: 0018:ffff8880848ff8a0 EFLAGS: 00010246 [ 40.443632] RAX: dffffc0000000000 RBX: 1ffff1101091ff17 RCX: ffffffff81b863eb [ 40.450878] RDX: 0000000000000000 RSI: ffff88808375a300 RDI: ffff888080588740 [ 40.458125] RBP: ffffffff881a37c0 R08: 0000000000000000 R09: 0000000000000000 [ 40.465376] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808375a300 [ 40.472623] R13: ffff888080588740 R14: ffff8880848ffa30 R15: ffff8880848ff8d8 [ 40.479881] FS: 0000000000cc0880(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 [ 40.488084] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.493956] CR2: ffffffffffffffd6 CR3: 00000000a8cd0000 CR4: 00000000001406e0 [ 40.501225] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.508470] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.515714] Call Trace: [ 40.518282] __lookup_slow+0x246/0x4a0 [ 40.522154] ? legitimize_path+0x200/0x200 [ 40.526379] ? check_preemption_disabled+0x41/0x2b0 [ 40.531389] ? __d_lookup+0x489/0x790 [ 40.535171] ? d_lookup+0x18e/0x280 [ 40.538778] lookup_one_len+0x163/0x190 [ 40.542742] ? try_lookup_one_len+0x180/0x180 [ 40.547229] reiserfs_lookup_privroot+0x92/0x280 [ 40.551965] reiserfs_fill_super+0x21e8/0x2e60 [ 40.556541] ? reiserfs_remount+0x1640/0x1640 [ 40.561027] ? lock_downgrade+0x750/0x750 [ 40.565155] ? snprintf+0xbb/0xf0 [ 40.568603] ? __mutex_add_waiter+0x160/0x160 [ 40.573079] mount_bdev+0x2fc/0x3b0 [ 40.576697] ? reiserfs_remount+0x1640/0x1640 [ 40.581170] mount_fs+0xa3/0x318 [ 40.584528] vfs_kern_mount.part.0+0x68/0x470 [ 40.589003] do_mount+0x51c/0x2f10 [ 40.592522] ? __do_page_fault+0x1ca/0xe00 [ 40.596741] ? copy_mount_string+0x40/0x40 [ 40.600952] ? copy_mount_options+0x1c3/0x370 [ 40.605425] ? copy_mount_options+0x1d0/0x370 [ 40.609911] ? memset+0x20/0x40 [ 40.613179] ? copy_mount_options+0x261/0x370 [ 40.617668] ksys_mount+0xcf/0x130 [ 40.621205] __x64_sys_mount+0xba/0x150 [ 40.625159] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 40.629732] do_syscall_64+0xf9/0x670 [ 40.633518] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.638685] RIP: 0033:0x447d9a [ 40.641865] 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 [ 40.660743] RSP: 002b:00007ffd40849518 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 40.668426] RAX: ffffffffffffffda RBX: 00007ffd40849570 RCX: 0000000000447d9a [ 40.675673] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd40849530 [ 40.682917] RBP: 00007ffd40849530 R08: 00007ffd40849570 R09: 0000000000000000 [ 40.690163] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000006 [ 40.697420] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 40.704669] Modules linked in: [ 40.707852] CR2: 0000000000000000 [ 40.712240] ---[ end trace f09174b787254a18 ]--- [ 40.717492] RIP: 0010: (null) [ 40.721421] Code: Bad RIP value. [ 40.725028] RSP: 0018:ffff8880848ff8a0 EFLAGS: 00010246 [ 40.730431] RAX: dffffc0000000000 RBX: 1ffff1101091ff17 RCX: ffffffff81b863eb [ 40.737820] RDX: 0000000000000000 RSI: ffff88808375a300 RDI: ffff888080588740 [ 40.745113] RBP: ffffffff881a37c0 R08: 0000000000000000 R09: 0000000000000000 [ 40.752375] R10: 0000000000000005 R11: 0000000000000000 R12: ffff88808375a300 [ 40.759719] R13: ffff888080588740 R14: ffff8880848ffa30 R15: ffff8880848ff8d8 [ 40.767022] FS: 0000000000cc0880(0000) GS:ffff8880ae200000(0000) knlGS:0000000000000000 [ 40.775270] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.781141] CR2: ffffffffffffffd6 CR3: 00000000a8cd0000 CR4: 00000000001406f0 [ 40.788426] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.795731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.802986] Kernel panic - not syncing: Fatal exception [ 40.809541] Kernel Offset: disabled [ 40.813154] Rebooting in 86400 seconds..