forked to background, child pid 192 no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 15.051155][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 15.051160][ T22] audit: type=1400 audit(1646062803.319:71): 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 [ 15.057815][ T22] audit: type=1400 audit(1646062803.329:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[587]" dev="pipefs" ino=587 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.10.47' (ECDSA) to the list of known hosts. executing program [ 27.382980][ T22] audit: type=1400 audit(1646062815.649:73): avc: denied { execmem } for pid=298 comm="syz-executor253" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.384818][ T299] incfs: Backing dir is not set, filesystem can't be mounted. [ 27.402526][ T22] audit: type=1400 audit(1646062815.649:74): avc: denied { mounton } for pid=299 comm="syz-executor253" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 27.410161][ T299] kasan: CONFIG_KASAN_INLINE enabled [ 27.437852][ T299] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.445912][ T299] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.452831][ T299] CPU: 0 PID: 299 Comm: syz-executor253 Not tainted 5.4.161-syzkaller-00025-g961dd91cc692 #0 [ 27.462942][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.472979][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 27.478152][ 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 [ 27.497741][ T299] RSP: 0018:ffff8881de8c7cb8 EFLAGS: 00010202 [ 27.503778][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e0435e80 [ 27.511719][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881e1435000 [ 27.519660][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd18f1c [ 27.527610][ T299] R10: ffffed103bd18f1c R11: 0000000000000000 R12: 0000000000000000 [ 27.535566][ T299] R13: dffffc0000000000 R14: ffff8881e1435000 R15: dffffc0000000000 [ 27.543527][ T299] FS: 0000555555e8c300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.552425][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.558987][ T299] CR2: 000055c76ccb6058 CR3: 00000001dee96000 CR4: 00000000003406f0 [ 27.566932][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.574872][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.582810][ T299] Call Trace: [ 27.586080][ T299] deactivate_locked_super+0xaf/0x100 [ 27.591424][ T299] incfs_mount_fs+0x70c/0x7d0 [ 27.596076][ T299] legacy_get_tree+0xde/0x170 [ 27.600722][ T299] ? incfs_unlink+0x80/0x80 [ 27.605193][ T299] vfs_get_tree+0x83/0x260 [ 27.609580][ T299] do_mount+0x17be/0x2390 [ 27.613892][ T299] ? copy_mount_options+0xc9/0x300 [ 27.618982][ T299] ksys_mount+0xc2/0xf0 [ 27.623118][ T299] __x64_sys_mount+0xb1/0xc0 [ 27.627677][ T299] do_syscall_64+0xcb/0x1e0 [ 27.632148][ T299] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.638007][ T299] RIP: 0033:0x7f52d9e91d29 [ 27.642392][ 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 [ 27.661978][ T299] RSP: 002b:00007ffd1fb7d668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 27.670355][ T299] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f52d9e91d29 [ 27.678293][ T299] RDX: 0000000020000340 RSI: 0000000020000040 RDI: 0000000000000000 [ 27.686233][ T299] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd1fb7d808 [ 27.694171][ T299] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f52d9e555b0 [ 27.702109][ T299] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 27.710064][ T299] Modules linked in: [ 27.714028][ T299] ---[ end trace 135dca86560b39e1 ]--- [ 27.719763][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 27.724932][ 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 [ 27.744535][ T299] RSP: 0018:ffff8881de8c7cb8 EFLAGS: 00010202 [ 27.750592][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e0435e80 [ 27.758560][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881e1435000 [ 27.766514][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd18f1c [ 27.774480][ T299] R10: ffffed103bd18f1c R11: 0000000000000000 R12: 0000000000000000 [ 27.782450][ T299] R13: dffffc0000000000 R14: ffff8881e1435000 R15: dffffc0000000000 [ 27.790421][ T299] FS: 0000555555e8c300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.799346][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.805898][ T299] CR2: 000055c76ccb6058 CR3: 00000001dee96000 CR4: 00000000003406f0 [ 27.813871][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.821841][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.829898][ T299] Kernel panic - not syncing: Fatal exception [ 27.836095][ T299] Kernel Offset: disabled [ 27.840417][ T299] Rebooting in 86400 seconds..