[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty3. [ 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 '10.128.15.195' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.712369][ T6871] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 44.723682][ T6871] REISERFS (device loop0): using ordered data mode [ 44.730492][ T6871] reiserfs: using flush barriers [ 44.738135][ T6871] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 0, max trans age 30 [ 44.758571][ T6871] REISERFS (device loop0): checking transaction log (loop0) [ 44.768843][ T6871] REISERFS (device loop0): Using rupasov hash to sort names [ 44.776500][ T6871] REISERFS (device loop0): using 3.5.x disk format [ 44.784821][ T6871] reiserfs: enabling write barrier flush mode [ 44.795987][ T6871] general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN [ 44.807705][ T6871] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 44.816117][ T6871] CPU: 0 PID: 6871 Comm: syz-executor175 Not tainted 5.9.0-rc8-syzkaller #0 [ 44.824775][ T6871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.834839][ T6871] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 44.840986][ T6871] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 50 1f 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 2a 1f b9 ff 4d 85 ed b8 a2 00 00 00 [ 44.860581][ T6871] RSP: 0018:ffffc90000f07b30 EFLAGS: 00010202 [ 44.866623][ T6871] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 44.874689][ T6871] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 44.882633][ T6871] RBP: 0000000000000000 R08: ffffffff81fbc504 R09: ffffffff81fbc3d7 [ 44.892832][ T6871] R10: 0000000000000002 R11: ffff8880a7e98480 R12: ffff88808548c050 [ 44.900773][ T6871] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 44.908734][ T6871] FS: 0000000002201880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 44.917632][ T6871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.924201][ T6871] CR2: 00007ffcddd80000 CR3: 00000000a8bdc000 CR4: 00000000001506f0 [ 44.932159][ T6871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.940099][ T6871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.948054][ T6871] Call Trace: [ 44.951335][ T6871] reiserfs_mkdir+0x229/0x800 [ 44.956001][ T6871] reiserfs_xattr_init+0x346/0x750 [ 44.961098][ T6871] reiserfs_remount+0x12aa/0x18d0 [ 44.966113][ T6871] reconfigure_super+0x3b4/0x7b0 [ 44.971036][ T6871] path_mount+0x19e2/0x29e0 [ 44.975512][ T6871] __se_sys_mount+0x126/0x180 [ 44.980159][ T6871] do_syscall_64+0x31/0x70 [ 44.984561][ T6871] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 44.990440][ T6871] RIP: 0033:0x447e0a [ 44.994325][ T6871] 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 [ 45.014524][ T6871] RSP: 002b:00007ffcddd7f6d8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 45.022904][ T6871] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 0000000000447e0a [ 45.030931][ T6871] RDX: 0000000020000540 RSI: 0000000020000580 RDI: 0000000000000000 [ 45.038888][ T6871] RBP: 0000000000000000 R08: 00007ffcddd7f770 R09: 0000000020001ec0 [ 45.046843][ T6871] R10: 0000000000240038 R11: 0000000000000297 R12: 00000000ffffffff [ 45.054792][ T6871] R13: 0000000000000000 R14: 00007ffcddd7f770 R15: 0000000000000000 [ 45.062753][ T6871] Modules linked in: [ 45.067032][ T6871] ---[ end trace a9c6ea772595c59f ]--- [ 45.072543][ T6871] RIP: 0010:reiserfs_security_init+0x248/0x400 [ 45.078687][ T6871] Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 50 1f 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 2a 1f b9 ff 4d 85 ed b8 a2 00 00 00 [ 45.098338][ T6871] RSP: 0018:ffffc90000f07b30 EFLAGS: 00010202 [ 45.104431][ T6871] RAX: 000000000000000d RBX: 0000000000000068 RCX: dffffc0000000000 [ 45.112560][ T6871] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 45.120520][ T6871] RBP: 0000000000000000 R08: ffffffff81fbc504 R09: ffffffff81fbc3d7 [ 45.128535][ T6871] R10: 0000000000000002 R11: ffff8880a7e98480 R12: ffff88808548c050 [ 45.136559][ T6871] R13: 0000000000000000 R14: 0000000000280202 R15: 0000000000000001 [ 45.144667][ T6871] FS: 0000000002201880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 45.153928][ T6871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.160630][ T6871] CR2: 00007ffcddd80000 CR3: 00000000a8bdc000 CR4: 00000000001506f0 [ 45.168654][ T6871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.178424][ T6871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.186452][ T6871] Kernel panic - not syncing: Fatal exception [ 45.193927][ T6871] Kernel Offset: disabled [ 45.198328][ T6871] Rebooting in 86400 seconds..