Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.214' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 68.717730][ T6638] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 68.729462][ T6638] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 68.737890][ T6638] CPU: 1 PID: 6638 Comm: syz-executor038 Not tainted 5.14.0-next-20210910-syzkaller #0 [ 68.747498][ T6638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.757542][ T6638] RIP: 0010:fuse_test_super+0x68/0xa0 [ 68.762974][ T6638] Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 3a 48 8b 9b 78 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 12 31 c0 48 39 2b 5b 5d 0f 94 c0 c3 e8 92 9f 0d ff [ 68.782559][ T6638] RSP: 0018:ffffc90002e1fcc8 EFLAGS: 00010246 [ 68.788603][ T6638] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 68.796551][ T6638] RDX: 0000000000000000 RSI: ffffffff82ae91fd RDI: ffff8880750a4678 [ 68.804501][ T6638] RBP: ffff88801ca4d000 R08: 0000000000000001 R09: 0000000000000003 [ 68.812450][ T6638] R10: fffff520005c3f8e R11: 0000000000000000 R12: dffffc0000000000 [ 68.820399][ T6638] R13: ffffffff82ae91f0 R14: 0000000000000000 R15: 0000000000000002 [ 68.828346][ T6638] FS: 0000000000fd5300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 68.837252][ T6638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.843820][ T6638] CR2: 00007ffd112d1758 CR3: 0000000071247000 CR4: 00000000001506e0 [ 68.851773][ T6638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.859719][ T6638] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.867689][ T6638] Call Trace: [ 68.870968][ T6638] sget_fc+0x1ff/0x7c0 [ 68.875023][ T6638] ? fuse_init_fs_context_submount+0x40/0x40 [ 68.880986][ T6638] fuse_get_tree+0x201/0x3f0 [ 68.885570][ T6638] vfs_get_tree+0x89/0x2f0 [ 68.889977][ T6638] path_mount+0x1320/0x1fa0 [ 68.894465][ T6638] ? kmem_cache_free+0x3d4/0x5b0 [ 68.899382][ T6638] ? putname+0xfe/0x140 [ 68.903520][ T6638] ? finish_automount+0xaf0/0xaf0 [ 68.908543][ T6638] ? putname+0xfe/0x140 [ 68.912690][ T6638] __x64_sys_mount+0x27f/0x300 [ 68.917439][ T6638] ? copy_mnt_ns+0xae0/0xae0 [ 68.922019][ T6638] ? syscall_enter_from_user_mode+0x21/0x70 [ 68.927904][ T6638] do_syscall_64+0x35/0xb0 [ 68.932299][ T6638] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 68.938174][ T6638] RIP: 0033:0x440089 [ 68.942049][ T6638] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 68.961643][ T6638] RSP: 002b:00007ffd112d1778 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 68.970046][ T6638] RAX: ffffffffffffffda RBX: 0000000000483088 RCX: 0000000000440089 [ 68.978009][ T6638] RDX: 0000000020002100 RSI: 00000000200020c0 RDI: 0000000000000000 [ 68.985970][ T6638] RBP: 0030656c69662f2e R08: 00000000200004c0 R09: 0000000000000001 [ 68.993917][ T6638] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000010bf1 [ 69.001866][ T6638] R13: 00007ffd112d178c R14: 00007ffd112d17a0 R15: 00007ffd112d1790 [ 69.009818][ T6638] Modules linked in: [ 69.013897][ T6638] ---[ end trace 750f18e3bec431c4 ]--- [ 69.019345][ T6638] RIP: 0010:fuse_test_super+0x68/0xa0 [ 69.024718][ T6638] Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 3a 48 8b 9b 78 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 12 31 c0 48 39 2b 5b 5d 0f 94 c0 c3 e8 92 9f 0d ff [ 69.044323][ T6638] RSP: 0018:ffffc90002e1fcc8 EFLAGS: 00010246 [ 69.050398][ T6638] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 69.058538][ T6638] RDX: 0000000000000000 RSI: ffffffff82ae91fd RDI: ffff8880750a4678 [ 69.066487][ T6638] RBP: ffff88801ca4d000 R08: 0000000000000001 R09: 0000000000000003 [ 69.074460][ T6638] R10: fffff520005c3f8e R11: 0000000000000000 R12: dffffc0000000000 [ 69.082539][ T6638] R13: ffffffff82ae91f0 R14: 0000000000000000 R15: 0000000000000002 [ 69.090523][ T6638] FS: 0000000000fd5300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 69.099517][ T6638] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.106088][ T6638] CR2: 00007ffd112d1758 CR3: 0000000071247000 CR4: 00000000001506e0 [ 69.114065][ T6638] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.122037][ T6638] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.130007][ T6638] Kernel panic - not syncing: Fatal exception [ 69.136299][ T6638] Kernel Offset: disabled [ 69.140608][ T6638] Rebooting in 86400 seconds..