[ 31.705025][ T25] audit: type=1800 audit(1579839090.777:34): pid=7191 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.736885][ T25] kauditd_printk_skb: 6 callbacks suppressed [ 37.736892][ T25] audit: type=1400 audit(1579839096.837:41): avc: denied { map } for pid=7370 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 Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. [ 54.234577][ T25] audit: type=1400 audit(1579839113.327:42): avc: denied { map } for pid=7383 comm="syz-executor455" path="/root/syz-executor455503149" 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 executing program executing program executing program [ 73.553980][ T7383] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888115f7bc40 (size 32): comm "syz-executor455", pid 7385, jiffies 4294943921 (age 13.400s) 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: [<000000002177ef82>] __kmalloc_track_caller+0x165/0x300 [<000000005f5fccea>] memdup_user+0x26/0xc0 [<00000000e5ffc58a>] strndup_user+0x62/0x80 [<00000000e1875ac3>] dma_buf_ioctl+0x60/0x1e0 [<00000000b9d82325>] do_vfs_ioctl+0x551/0x890 [<00000000188ee639>] ksys_ioctl+0x86/0xb0 [<00000000ad0c79d5>] __x64_sys_ioctl+0x1e/0x30 [<00000000a54f5b86>] do_syscall_64+0x73/0x220 [<000000006c59456d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9