Starting sshd: OK syzkaller syzkaller login: [ 19.028759][ T22] kauditd_printk_skb: 60 callbacks suppressed [ 19.028769][ T22] audit: type=1400 audit(1644360825.079:71): avc: denied { transition } for pid=287 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 [ 19.034658][ T22] audit: type=1400 audit(1644360825.079:72): avc: denied { write } for pid=287 comm="sh" path="pipe:[9945]" dev="pipefs" ino=9945 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 67.028764][ T116] cfg80211: failed to load regulatory.db [ 307.668658][ T93] kworker/dying (93) used greatest stack depth: 26472 bytes left Warning: Permanently added '10.128.1.63' (ECDSA) to the list of known hosts. executing program [ 546.645277][ T22] audit: type=1400 audit(1644361352.689:73): avc: denied { execmem } for pid=300 comm="syz-executor137" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 546.666049][ T22] audit: type=1400 audit(1644361352.699:74): avc: denied { read write } for pid=300 comm="syz-executor137" name="loop0" dev="devtmpfs" ino=9357 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 546.676528][ T301] incfs: Backing dir is not set, filesystem can't be mounted. [ 546.690612][ T22] audit: type=1400 audit(1644361352.699:75): avc: denied { open } for pid=300 comm="syz-executor137" path="/dev/loop0" dev="devtmpfs" ino=9357 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 546.708331][ T301] kasan: CONFIG_KASAN_INLINE enabled [ 546.722528][ T22] audit: type=1400 audit(1644361352.699:76): avc: denied { ioctl } for pid=300 comm="syz-executor137" path="/dev/loop0" dev="devtmpfs" ino=9357 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 546.727576][ T301] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 546.753348][ T22] audit: type=1400 audit(1644361352.719:77): avc: denied { mounton } for pid=301 comm="syz-executor137" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 546.761854][ T301] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 546.791191][ T301] CPU: 1 PID: 301 Comm: syz-executor137 Not tainted 5.4.161-syzkaller-00055-g2159354389cf #0 [ 546.801311][ T301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 546.811351][ T301] RIP: 0010:incfs_kill_sb+0x4c/0x100 [ 546.816609][ T301] Code: 8d b3 f0 03 00 00 4d 89 f7 49 c1 ef 03 41 80 3c 2f 00 74 08 4c 89 f7 e8 42 34 b2 ff 4d 8b 2e 49 8d 5d 10 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 26 34 b2 ff 48 8b 1b 48 83 c3 30 48 [ 546.836292][ T301] RSP: 0018:ffff8881de55fcb0 EFLAGS: 00010202 [ 546.842332][ T301] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e3355e80 [ 546.850382][ T301] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de4a2000 [ 546.858341][ T301] RBP: dffffc0000000000 R08: ffffffff821f6174 R09: ffffed103bcabf1e [ 546.866408][ T301] R10: ffffed103bcabf1e R11: 0000000000000000 R12: ffff8881de4a2000 [ 546.874353][ T301] R13: 0000000000000000 R14: ffff8881de4a23f0 R15: 1ffff1103bc9447e [ 546.882318][ T301] FS: 00005555561d53c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 546.891222][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 546.897780][ T301] CR2: 0000000000000000 CR3: 00000001e2c98000 CR4: 00000000003406e0 [ 546.905728][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 546.913863][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 546.921806][ T301] Call Trace: [ 546.925099][ T301] deactivate_locked_super+0xaf/0x100 [ 546.930453][ T301] incfs_mount_fs+0x772/0x840 [ 546.935116][ T301] legacy_get_tree+0xde/0x170 [ 546.939767][ T301] ? incfs_unlink+0x80/0x80 [ 546.944240][ T301] vfs_get_tree+0x83/0x260 [ 546.948633][ T301] do_mount+0x17be/0x2390 [ 546.952936][ T301] ? copy_mount_options+0xc9/0x300 [ 546.958038][ T301] ksys_mount+0xc2/0xf0 [ 546.962164][ T301] __x64_sys_mount+0xb1/0xc0 [ 546.966737][ T301] do_syscall_64+0xcb/0x1e0 [ 546.971296][ T301] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 546.977178][ T301] RIP: 0033:0x7f56e1d478a9 [ 546.981580][ T301] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 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 [ 547.001169][ T301] RSP: 002b:00007fff3b6a2ac8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 547.009559][ T301] RAX: ffffffffffffffda RBX: 00007fff3b6a2b08 RCX: 00007f56e1d478a9 [ 547.017525][ T301] RDX: 0000000020000300 RSI: 0000000020000000 RDI: 0000000000000000 [ 547.025471][ T301] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 547.033432][ T301] R10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3b6a2b00 [ 547.041377][ T301] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 547.049328][ T301] Modules linked in: [ 547.053330][ T301] ---[ end trace 2e34bc2d0da8275e ]--- [ 547.058794][ T301] RIP: 0010:incfs_kill_sb+0x4c/0x100 [ 547.064051][ T301] Code: 8d b3 f0 03 00 00 4d 89 f7 49 c1 ef 03 41 80 3c 2f 00 74 08 4c 89 f7 e8 42 34 b2 ff 4d 8b 2e 49 8d 5d 10 48 89 d8 48 c1 e8 03 <80> 3c 28 00 74 08 48 89 df e8 26 34 b2 ff 48 8b 1b 48 83 c3 30 48 [ 547.083659][ T301] RSP: 0018:ffff8881de55fcb0 EFLAGS: 00010202 [ 547.089724][ T301] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e3355e80 [ 547.097670][ T301] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de4a2000 [ 547.105642][ T301] RBP: dffffc0000000000 R08: ffffffff821f6174 R09: ffffed103bcabf1e [ 547.113626][ T301] R10: ffffed103bcabf1e R11: 0000000000000000 R12: ffff8881de4a2000 [ 547.121615][ T301] R13: 0000000000000000 R14: ffff8881de4a23f0 R15: 1ffff1103bc9447e [ 547.129584][ T301] FS: 00005555561d53c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 547.138512][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 547.145080][ T301] CR2: 0000000000000000 CR3: 00000001e2c98000 CR4: 00000000003406e0 [ 547.153067][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 547.161050][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 547.169021][ T301] Kernel panic - not syncing: Fatal exception [ 547.175244][ T301] Kernel Offset: disabled [ 547.179552][ T301] Rebooting in 86400 seconds..