[ 7.724256][ T22] audit: type=1400 audit(1645785867.130:63): avc: denied { setattr } for pid=202 comm="chmod" name="resolv.conf" dev="tmpfs" ino=9834 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1
forked to background, child pid 192
Starting sshd: OK
syzkaller
syzkaller login: [ 14.108398][ T22] kauditd_printk_skb: 7 callbacks suppressed
[ 14.108406][ T22] audit: type=1400 audit(1645785873.510:71): 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
[ 14.116470][ T22] audit: type=1400 audit(1645785873.520:72): avc: denied { write } for pid=265 comm="sh" path="pipe:[10590]" dev="pipefs" ino=10590 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1
Warning: Permanently added '10.128.0.173' (ECDSA) to the list of known hosts.
executing program
[ 20.601172][ T22] audit: type=1400 audit(1645785880.010:73): avc: denied { execmem } for pid=298 comm="syz-executor259" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[ 20.611849][ T298] incfs: Backing dir is not set, filesystem can't be mounted.
[ 20.620573][ T22] audit: type=1400 audit(1645785880.020:74): avc: denied { mounton } for pid=298 comm="syz-executor259" path="/root/file0" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[ 20.628244][ T298] kasan: CONFIG_KASAN_INLINE enabled
[ 20.656028][ T298] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 20.664101][ T298] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[ 20.671015][ T298] CPU: 1 PID: 298 Comm: syz-executor259 Not tainted 5.4.161-syzkaller-00024-g7479ec62adf6 #0
[ 20.681640][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 20.691676][ T298] RIP: 0010:incfs_kill_sb+0x4c/0x100
[ 20.696928][ T298] 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
[ 20.716515][ T298] RSP: 0018:ffff8881de48fcb0 EFLAGS: 00010202
[ 20.722563][ T298] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e29b9f80
[ 20.730507][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de579000
[ 20.738620][ T298] RBP: dffffc0000000000 R08: ffffffff821f61f4 R09: ffffed103bc91f1e
[ 20.746578][ T298] R10: ffffed103bc91f1e R11: 0000000000000000 R12: ffff8881de579000
[ 20.754533][ T298] R13: 0000000000000000 R14: ffff8881de5793f0 R15: 1ffff1103bcaf27e
[ 20.762477][ T298] FS: 0000555557422300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 20.771395][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 20.778375][ T298] CR2: 0000000020000180 CR3: 00000001debcc000 CR4: 00000000003406e0
[ 20.786337][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 20.794279][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 20.802217][ T298] Call Trace:
[ 20.805479][ T298] deactivate_locked_super+0xaf/0x100
[ 20.810819][ T298] incfs_mount_fs+0x772/0x840
[ 20.815481][ T298] legacy_get_tree+0xde/0x170
[ 20.820125][ T298] ? incfs_unlink+0x80/0x80
[ 20.824595][ T298] vfs_get_tree+0x83/0x260
[ 20.828984][ T298] do_mount+0x17be/0x2390
[ 20.833280][ T298] ? copy_mount_options+0xc9/0x300
[ 20.838374][ T298] ksys_mount+0xc2/0xf0
[ 20.842500][ T298] __x64_sys_mount+0xb1/0xc0
[ 20.847078][ T298] do_syscall_64+0xcb/0x1e0
[ 20.851578][ T298] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 20.857853][ T298] RIP: 0033:0x7f258810efe9
[ 20.862263][ T298] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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
[ 20.881885][ T298] RSP: 002b:00007ffe78ef2578 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[ 20.890271][ T298] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f258810efe9
[ 20.898213][ T298] RDX: 0000000020000200 RSI: 0000000020000040 RDI: 0000000000000000
[ 20.906157][ T298] RBP: 00007f25880d2fd0 R08: 0000000000000000 R09: 0000000000000000
[ 20.914112][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f25880d3060
[ 20.922084][ T298] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 20.930025][ T298] Modules linked in:
[ 20.934067][ T298] ---[ end trace 6037a2e1bd572692 ]---
[ 20.939516][ T298] RIP: 0010:incfs_kill_sb+0x4c/0x100
[ 20.944819][ T298] 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
[ 20.964418][ T298] RSP: 0018:ffff8881de48fcb0 EFLAGS: 00010202
[ 20.970471][ T298] RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff8881e29b9f80
[ 20.978450][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881de579000
[ 20.986421][ T298] RBP: dffffc0000000000 R08: ffffffff821f61f4 R09: ffffed103bc91f1e
[ 20.994390][ T298] R10: ffffed103bc91f1e R11: 0000000000000000 R12: ffff8881de579000
[ 21.002393][ T298] R13: 0000000000000000 R14: ffff8881de5793f0 R15: 1ffff1103bcaf27e
[ 21.010433][ T298] FS: 0000555557422300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
[ 21.019363][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 21.025939][ T298] CR2: 0000000020000180 CR3: 00000001debcc000 CR4: 00000000003406e0
[ 21.033933][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 21.041898][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 21.049844][ T298] Kernel panic - not syncing: Fatal exception
[ 21.056048][ T298] Kernel Offset: disabled
[ 21.060504][ T298] Rebooting in 86400 seconds..