[ OK ] Started Getty on tty2. [ 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 '10.128.0.82' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.326583] audit: type=1400 audit(1601025336.511:8): avc: denied { execmem } for pid=6471 comm="syz-executor963" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 44.340688] ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker. [ 44.357119] ------------[ cut here ]------------ [ 44.361881] kernel BUG at fs/ntfs/aops.c:203! [ 44.366514] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 44.371906] CPU: 0 PID: 6471 Comm: syz-executor963 Not tainted 4.19.147-syzkaller #0 [ 44.380000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.391418] RIP: 0010:ntfs_readpage+0x1c0b/0x24d0 [ 44.397519] Code: ff e8 69 93 16 ff 48 8b 9d 80 fd ff ff 31 ff 48 c1 eb 03 83 e3 01 89 de e8 82 94 16 ff 84 db 0f 85 0b f0 ff ff e8 45 93 16 ff <0f> 0b 48 c7 c7 80 e3 bf 89 e8 e7 bc 5a 01 e8 32 93 16 ff 0f 0b 48 [ 44.418787] RSP: 0018:ffff888088547758 EFLAGS: 00010293 [ 44.424152] RAX: ffff8880a49880c0 RBX: 0000000000000000 RCX: ffffffff825b2f8e [ 44.431418] RDX: 0000000000000000 RSI: ffffffff825b2f9b RDI: 0000000000000001 [ 44.438688] RBP: ffff888080845a08 R08: 0000000000000001 R09: 0000000000000000 [ 44.445956] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 44.453226] R13: ffff888080845788 R14: 0000000000000001 R15: ffffea0002111180 [ 44.460483] FS: 0000000001765880(0000) GS:ffff8880ae200000(0000) knlGS:0000000000000000 [ 44.468693] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.474564] CR2: 00007f4d42555710 CR3: 00000000a881c000 CR4: 00000000001406f0 [ 44.481816] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.489377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.496645] Call Trace: [ 44.499223] ? page_cache_tree_insert+0x410/0x410 [ 44.504383] ? check_preemption_disabled+0x41/0x2b0 [ 44.509422] ? ntfs_end_buffer_async_read+0x1300/0x1300 [ 44.515063] ? add_to_page_cache_lru+0x259/0x6c0 [ 44.519808] ? add_to_page_cache_locked+0x40/0x40 [ 44.525191] do_read_cache_page+0x533/0x1080 [ 44.530132] ? ntfs_end_buffer_async_read+0x1300/0x1300 [ 44.535492] map_mft_record+0x228/0xd00 [ 44.539590] ntfs_read_locked_inode+0x19c/0x5490 [ 44.545496] ntfs_read_inode_mount+0xcba/0x23b0 [ 44.550178] ntfs_fill_super+0x1761/0x89d2 [ 44.554799] ? snprintf+0xbb/0xf0 [ 44.558237] ? vsprintf+0x30/0x30 [ 44.561674] ? ntfs_remount+0x500/0x500 [ 44.565638] ? __mutex_add_waiter+0x160/0x160 [ 44.570115] ? set_blocksize+0x163/0x3f0 [ 44.574169] mount_bdev+0x2fc/0x3b0 [ 44.577774] ? ntfs_remount+0x500/0x500 [ 44.581730] mount_fs+0xa3/0x318 [ 44.585088] vfs_kern_mount.part.0+0x68/0x470 [ 44.589586] do_mount+0x51c/0x2f10 [ 44.593114] ? do_raw_spin_unlock+0x171/0x240 [ 44.597634] ? check_preemption_disabled+0x41/0x2b0 [ 44.602653] ? copy_mount_string+0x40/0x40 [ 44.606904] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 44.612477] ? copy_mount_options+0x261/0x370 [ 44.617310] ksys_mount+0xcf/0x130 [ 44.621008] __x64_sys_mount+0xba/0x150 [ 44.625103] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 44.629829] do_syscall_64+0xf9/0x670 [ 44.633647] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.638917] RIP: 0033:0x446e9a [ 44.642475] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad 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 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 44.661629] RSP: 002b:00007fff47b2f258 EFLAGS: 00000287 ORIG_RAX: 00000000000000a5 [ 44.669323] RAX: ffffffffffffffda RBX: 00007fff47b2f2b0 RCX: 0000000000446e9a [ 44.676580] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff47b2f270 [ 44.683848] RBP: 00007fff47b2f270 R08: 00007fff47b2f2b0 R09: 00007fff00000015 [ 44.691102] R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000008 [ 44.699263] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 44.706637] Modules linked in: [ 44.710695] ---[ end trace 0bf407d5fdd32026 ]--- [ 44.715511] RIP: 0010:ntfs_readpage+0x1c0b/0x24d0 [ 44.720641] Code: ff e8 69 93 16 ff 48 8b 9d 80 fd ff ff 31 ff 48 c1 eb 03 83 e3 01 89 de e8 82 94 16 ff 84 db 0f 85 0b f0 ff ff e8 45 93 16 ff <0f> 0b 48 c7 c7 80 e3 bf 89 e8 e7 bc 5a 01 e8 32 93 16 ff 0f 0b 48 [ 44.740025] RSP: 0018:ffff888088547758 EFLAGS: 00010293 [ 44.745422] RAX: ffff8880a49880c0 RBX: 0000000000000000 RCX: ffffffff825b2f8e [ 44.752788] RDX: 0000000000000000 RSI: ffffffff825b2f9b RDI: 0000000000000001 [ 44.760795] RBP: ffff888080845a08 R08: 0000000000000001 R09: 0000000000000000 [ 44.768121] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 44.775491] R13: ffff888080845788 R14: 0000000000000001 R15: ffffea0002111180 [ 44.783909] FS: 0000000001765880(0000) GS:ffff8880ae200000(0000) knlGS:0000000000000000 [ 44.792570] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.798469] CR2: 00007f4d42555710 CR3: 00000000a881c000 CR4: 00000000001406f0 [ 44.806944] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.815457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.822822] Kernel panic - not syncing: Fatal exception [ 44.829420] Kernel Offset: disabled [ 44.833091] Rebooting in 86400 seconds..