forked to background, child pid 192 no interfaces have a carrier Starting sshd: OK syzkaller syzkaller login: [ 14.408994][ T22] kauditd_printk_skb: 37 callbacks suppressed [ 14.409001][ T22] audit: type=1400 audit(1646617162.669:71): 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 [ 14.413352][ T22] audit: type=1400 audit(1646617162.669:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[10073]" dev="pipefs" ino=10073 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. executing program [ 23.673200][ T22] audit: type=1400 audit(1646617171.929:73): avc: denied { execmem } for pid=298 comm="syz-executor109" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.693886][ T22] audit: type=1400 audit(1646617171.949:74): avc: denied { mounton } for pid=299 comm="syz-executor109" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.694976][ T299] incfs: Backing dir is not set, filesystem can't be mounted. [ 23.724115][ T299] kasan: CONFIG_KASAN_INLINE enabled [ 23.729444][ T299] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.737611][ T299] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 23.744555][ T299] CPU: 1 PID: 299 Comm: syz-executor109 Not tainted 5.4.161-syzkaller-00026-g8a3679a75730 #0 [ 23.754672][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.764721][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 23.769887][ 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 [ 23.789478][ T299] RSP: 0018:ffff8881deb4fcb8 EFLAGS: 00010202 [ 23.795526][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881de800000 [ 23.803468][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881e0b20000 [ 23.811421][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd69f1c [ 23.819364][ T299] R10: ffffed103bd69f1c R11: 0000000000000000 R12: 0000000000000000 [ 23.827314][ T299] R13: dffffc0000000000 R14: ffff8881e0b20000 R15: dffffc0000000000 [ 23.835265][ T299] FS: 0000555555deb300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.844258][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.850831][ T299] CR2: 00007fffac5eb080 CR3: 00000001de861000 CR4: 00000000003406e0 [ 23.858779][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.866720][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.874659][ T299] Call Trace: [ 23.877934][ T299] deactivate_locked_super+0xaf/0x100 [ 23.883280][ T299] incfs_mount_fs+0x70c/0x7d0 [ 23.888013][ T299] legacy_get_tree+0xde/0x170 [ 23.892750][ T299] ? incfs_unlink+0x80/0x80 [ 23.897235][ T299] vfs_get_tree+0x83/0x260 [ 23.901624][ T299] do_mount+0x17be/0x2390 [ 23.905923][ T299] ? copy_mount_options+0xc9/0x300 [ 23.911006][ T299] ksys_mount+0xc2/0xf0 [ 23.915143][ T299] __x64_sys_mount+0xb1/0xc0 [ 23.919726][ T299] do_syscall_64+0xcb/0x1e0 [ 23.924209][ T299] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 23.930112][ T299] RIP: 0033:0x7fd84aecfd29 [ 23.934502][ 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 [ 23.954166][ T299] RSP: 002b:00007fffac4915f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 23.962589][ T299] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fd84aecfd29 [ 23.970547][ T299] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 23.978489][ T299] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffac491798 [ 23.986454][ T299] R10: 0000000000204008 R11: 0000000000000246 R12: 00007fd84ae935b0 [ 23.994394][ T299] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 24.002335][ T299] Modules linked in: [ 24.006258][ T299] ---[ end trace adb629b38e07bbe9 ]--- [ 24.011720][ T299] RIP: 0010:incfs_kill_sb+0x47/0xe0 [ 24.016928][ 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 [ 24.036541][ T299] RSP: 0018:ffff8881deb4fcb8 EFLAGS: 00010202 [ 24.042613][ T299] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881de800000 [ 24.050579][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881e0b20000 [ 24.058552][ T299] RBP: 0000000000000000 R08: ffffffff821f6354 R09: ffffed103bd69f1c [ 24.066541][ T299] R10: ffffed103bd69f1c R11: 0000000000000000 R12: 0000000000000000 [ 24.074685][ T299] R13: dffffc0000000000 R14: ffff8881e0b20000 R15: dffffc0000000000 [ 24.082659][ T299] FS: 0000555555deb300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.091588][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.098164][ T299] CR2: 00007fffac5eb080 CR3: 00000001de861000 CR4: 00000000003406e0 [ 24.106109][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.114085][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.122050][ T299] Kernel panic - not syncing: Fatal exception [ 24.128260][ T299] Kernel Offset: disabled [ 24.132559][ T299] Rebooting in 86400 seconds..