[   28.581488][   T25] audit: type=1800 audit(1581326205.748:40): pid=6975 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   32.360097][   T25] audit: type=1400 audit(1581326209.548:41): avc:  denied  { map } for  pid=7156 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[   44.127662][   T25] audit: type=1400 audit(1581326221.318:42): avc:  denied  { map } for  pid=7166 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
Warning: Permanently added '10.128.15.208' (ECDSA) to the list of known hosts.
[   86.510708][   T25] audit: type=1400 audit(1581326263.698:43): avc:  denied  { map } for  pid=7173 comm="syz-executor621" path="/root/syz-executor621462113" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   86.539354][   T25] audit: type=1400 audit(1581326263.698:44): avc:  denied  { integrity } for  pid=7173 comm="syz-executor621" lockdown_reason="debugfs access" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=lockdown permissive=1
executing program
executing program
executing program
[  110.835591][ T7173] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888118c76e60 (size 32):
  comm "syz-executor621", pid 7174, jiffies 4294946600 (age 19.500s)
  hex dump (first 32 bytes):
    00 64 6d 61 62 75 66 3a 00 00 00 00 00 00 00 00  .dmabuf:........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000dafb1c97>] __kmalloc_track_caller+0x165/0x300
    [<000000003c70b03a>] memdup_user+0x26/0xc0
    [<00000000fbef5ab6>] strndup_user+0x62/0x80
    [<0000000040a89f05>] dma_buf_ioctl+0x60/0x1e0
    [<0000000095cea627>] ksys_ioctl+0xb4/0xe0
    [<00000000ebe850b0>] __x64_sys_ioctl+0x1e/0x30
    [<000000002e5a8306>] do_syscall_64+0x73/0x220
    [<00000000ed10c226>] entry_SYSCALL_64_after_hwframe+0x44/0xa9