[ 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 '10.128.0.93' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.220416] audit: type=1400 audit(1601352075.478:8): avc: denied { execmem } for pid=6488 comm="syz-executor060" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 42.236420] ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt [ 42.236420] [ 42.251654] BUG: unable to handle kernel paging request at ffffffffffffff80 [ 42.259016] PGD 9470067 P4D 9470067 PUD 9472067 PMD 0 [ 42.264321] Oops: 0000 [#1] PREEMPT SMP KASAN [ 42.268944] CPU: 1 PID: 6488 Comm: syz-executor060 Not tainted 4.19.148-syzkaller #0 [ 42.276864] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.286348] RIP: 0010:diFree+0x15b/0x24b0 [ 42.290528] Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 38 1e 00 00 48 8b 44 24 18 <48> 8b 68 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00 [ 42.309697] RSP: 0018:ffff88808927f8b8 EFLAGS: 00010246 [ 42.315058] RAX: 0000000000000000 RBX: ffff8880a93a80c0 RCX: ffffffff828b4135 [ 42.322352] RDX: 1ffffffffffffff0 RSI: ffffffff828d71a5 RDI: ffffffffffffff80 [ 42.329615] RBP: ffff88808aab8468 R08: 0000000000000000 R09: 0000000000000000 [ 42.337192] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88808aab8538 [ 42.344626] R13: 0000000000000001 R14: ffffffff883a5dc0 R15: ffff88808aab8468 [ 42.351890] FS: 00000000016cc880(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 [ 42.360144] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.366052] CR2: ffffffffffffff80 CR3: 0000000091aba000 CR4: 00000000001406e0 [ 42.373439] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.380704] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.387970] Call Trace: [ 42.390565] ? mark_held_locks+0xf0/0xf0 [ 42.394628] ? mark_held_locks+0xf0/0xf0 [ 42.398720] ? mark_held_locks+0xf0/0xf0 [ 42.402772] ? __x64_sys_mount+0xba/0x150 [ 42.406916] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.412278] ? diWrite+0x1450/0x1450 [ 42.415984] ? find_held_lock+0x2d/0x110 [ 42.420042] ? dquot_initialize_needed+0x290/0x290 [ 42.425107] ? lock_downgrade+0x750/0x750 [ 42.429254] jfs_evict_inode+0x126/0x170 [ 42.433612] ? jfs_write_inode+0x1d0/0x1d0 [ 42.437923] evict+0x2ed/0x780 [ 42.441151] iput+0x511/0x890 [ 42.444306] diFreeSpecial+0x63/0x80 [ 42.448042] jfs_mount+0x23f/0x3d0 [ 42.451686] jfs_fill_super+0x55c/0xb50 [ 42.455689] ? parse_options+0xf50/0xf50 [ 42.459776] ? set_blocksize+0x163/0x3f0 [ 42.463829] mount_bdev+0x2fc/0x3b0 [ 42.467442] ? parse_options+0xf50/0xf50 [ 42.471488] mount_fs+0xa3/0x318 [ 42.474843] vfs_kern_mount.part.0+0x68/0x470 [ 42.479344] do_mount+0x51c/0x2f10 [ 42.482892] ? check_preemption_disabled+0x41/0x2b0 [ 42.488024] ? copy_mount_string+0x40/0x40 [ 42.492259] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 42.497160] ? _copy_from_user+0xd2/0x130 [ 42.501354] ? copy_mount_options+0x261/0x370 [ 42.505843] ksys_mount+0xcf/0x130 [ 42.509373] __x64_sys_mount+0xba/0x150 [ 42.513340] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 42.517918] do_syscall_64+0xf9/0x670 [ 42.521716] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.526927] RIP: 0033:0x446e0a [ 42.530109] 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 [ 42.549004] RSP: 002b:00007ffe903517c8 EFLAGS: 00000283 ORIG_RAX: 00000000000000a5 [ 42.556714] RAX: ffffffffffffffda RBX: 00007ffe90351820 RCX: 0000000000446e0a [ 42.563994] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe903517e0 [ 42.571366] RBP: 00007ffe903517e0 R08: 00007ffe90351820 R09: 0000000000000000 [ 42.578643] R10: 0000000000000000 R11: 0000000000000283 R12: 0000000000000002 [ 42.585909] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 42.593205] Modules linked in: [ 42.596386] CR2: ffffffffffffff80 [ 42.599832] ---[ end trace 380659b889c543cc ]--- [ 42.604623] RIP: 0010:diFree+0x15b/0x24b0 [ 42.608937] Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 38 1e 00 00 48 8b 44 24 18 <48> 8b 68 80 4c 89 e8 48 c1 e8 0c 48 89 04 24 48 b8 00 00 00 00 00 [ 42.628769] RSP: 0018:ffff88808927f8b8 EFLAGS: 00010246 [ 42.634163] RAX: 0000000000000000 RBX: ffff8880a93a80c0 RCX: ffffffff828b4135 [ 42.641443] RDX: 1ffffffffffffff0 RSI: ffffffff828d71a5 RDI: ffffffffffffff80 [ 42.648704] RBP: ffff88808aab8468 R08: 0000000000000000 R09: 0000000000000000 [ 42.655963] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88808aab8538 [ 42.663222] R13: 0000000000000001 R14: ffffffff883a5dc0 R15: ffff88808aab8468 [ 42.670620] FS: 00000000016cc880(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 [ 42.678835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.684953] CR2: ffffffffffffff80 CR3: 0000000091aba000 CR4: 00000000001406e0 [ 42.692221] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.699487] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.706880] Kernel panic - not syncing: Fatal exception [ 42.713818] Kernel Offset: disabled [ 42.717670] Rebooting in 86400 seconds..