no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 12.827738][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 12.827744][ T22] audit: type=1400 audit(1646413285.300:71): avc: denied { transition } for pid=265 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.833297][ T22] audit: type=1400 audit(1646413285.300:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[9893]" dev="pipefs" ino=9893 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 13.529235][ T266] sshd (266) used greatest stack depth: 25672 bytes left Warning: Permanently added '10.128.1.114' (ECDSA) to the list of known hosts. executing program [ 19.343711][ T22] audit: type=1400 audit(1646413291.810:73): avc: denied { execmem } for pid=298 comm="syz-executor606" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.364267][ T22] audit: type=1400 audit(1646413291.840:74): avc: denied { mounton } for pid=299 comm="syz-executor606" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.365468][ T299] incfs: Backing dir is not set, filesystem can't be mounted. [ 19.394367][ T299] kasan: CONFIG_KASAN_INLINE enabled [ 19.399659][ T299] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.407711][ T299] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 19.414620][ T299] CPU: 1 PID: 299 Comm: syz-executor606 Not tainted 5.4.161-syzkaller-00026-g8a3679a75730 #0 [ 19.424727][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.434754][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 19.439915][ T299] Code: 9e f0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 68 32 b2 ff 4c 8b 23 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 4a 32 b2 ff 48 8b 1b 48 83 c3 30 [ 19.459487][ T299] RSP: 0018:ffff8881de9bfcb8 EFLAGS: 00010202 [ 19.465519][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e1beee40 [ 19.473471][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de92a000 [ 19.481411][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd37f1c [ 19.489363][ T299] R10: ffffed103bd37f1c R11: 0000000000000000 R12: 0000000000000000 [ 19.497303][ T299] R13: dffffc0000000000 R14: ffff8881de92a000 R15: dffffc0000000000 [ 19.505247][ T299] FS: 0000555556d09300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.514141][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.520687][ T299] CR2: 00007ffffefcb080 CR3: 00000001dee91000 CR4: 00000000003406e0 [ 19.528625][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.536564][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.544497][ T299] Call Trace: [ 19.547758][ T299] deactivate_locked_super+0xaf/0x100 [ 19.553095][ T299] incfs_mount_fs+0x70c/0x7d0 [ 19.557736][ T299] legacy_get_tree+0xde/0x170 [ 19.562378][ T299] ? incfs_unlink+0x80/0x80 [ 19.566846][ T299] vfs_get_tree+0x83/0x260 [ 19.571231][ T299] do_mount+0x17be/0x2390 [ 19.575525][ T299] ? copy_mount_options+0xc9/0x300 [ 19.580599][ T299] ksys_mount+0xc2/0xf0 [ 19.584718][ T299] __x64_sys_mount+0xb1/0xc0 [ 19.589273][ T299] do_syscall_64+0xcb/0x1e0 [ 19.593741][ T299] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 19.599597][ T299] RIP: 0033:0x7fc7622b3d29 [ 19.603976][ T299] 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 [ 19.623546][ T299] RSP: 002b:00007ffffefc3968 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 19.631936][ T299] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fc7622b3d29 [ 19.639872][ T299] RDX: 0000000020000200 RSI: 0000000020000040 RDI: 0000000000000000 [ 19.647808][ T299] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffffefc3b08 [ 19.655755][ T299] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc7622775b0 [ 19.663699][ T299] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 19.671644][ T299] Modules linked in: [ 19.675574][ T299] ---[ end trace ea109486df8efd93 ]--- [ 19.681052][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 19.686245][ T299] Code: 9e f0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 68 32 b2 ff 4c 8b 23 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 4a 32 b2 ff 48 8b 1b 48 83 c3 30 [ 19.705860][ T299] RSP: 0018:ffff8881de9bfcb8 EFLAGS: 00010202 [ 19.711948][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e1beee40 [ 19.719913][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de92a000 [ 19.727888][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd37f1c [ 19.735828][ T299] R10: ffffed103bd37f1c R11: 0000000000000000 R12: 0000000000000000 [ 19.743790][ T299] R13: dffffc0000000000 R14: ffff8881de92a000 R15: dffffc0000000000 [ 19.751761][ T299] FS: 0000555556d09300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 19.760679][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.767251][ T299] CR2: 00007ffffefcb080 CR3: 00000001dee91000 CR4: 00000000003406e0 [ 19.775199][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.783157][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.791114][ T299] Kernel panic - not syncing: Fatal exception [ 19.797310][ T299] Kernel Offset: disabled [ 19.801608][ T299] Rebooting in 86400 seconds..