[ 27.170311][ T24] audit: type=1800 audit(1561843029.356:30): pid=6960 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: [ 31.409371][ T24] kauditd_printk_skb: 4 callbacks suppressed [ 31.409378][ T24] audit: type=1400 audit(1561843033.616:35): avc: denied { map } for pid=7140 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 '10.128.0.236' (ECDSA) to the list of known hosts. [ 815.101463][ T24] audit: type=1400 audit(1561843817.306:36): avc: denied { map } for pid=7155 comm="syz-executor497" path="/root/syz-executor497338179" dev="sda1" ino=16461 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 [ 822.026254][ T7156] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 822.026254][ T7156] program syz-executor497 not setting count and/or reply_len properly executing program [ 827.903239][ T7157] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 827.903239][ T7157] program syz-executor497 not setting count and/or reply_len properly executing program [ 833.708265][ T7158] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 833.708265][ T7158] program syz-executor497 not setting count and/or reply_len properly executing program [ 839.502508][ T7159] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 839.502508][ T7159] program syz-executor497 not setting count and/or reply_len properly executing program [ 845.519750][ T7160] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 845.519750][ T7160] program syz-executor497 not setting count and/or reply_len properly executing program [ 850.692989][ T7161] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 850.692989][ T7161] program syz-executor497 not setting count and/or reply_len properly executing program [ 855.959142][ T7162] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 855.959142][ T7162] program syz-executor497 not setting count and/or reply_len properly executing program [ 861.885101][ T7163] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 861.885101][ T7163] program syz-executor497 not setting count and/or reply_len properly executing program [ 867.779995][ T7164] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 867.779995][ T7164] program syz-executor497 not setting count and/or reply_len properly executing program [ 873.873574][ T7165] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 873.873574][ T7165] program syz-executor497 not setting count and/or reply_len properly executing program [ 879.262324][ T7166] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 879.262324][ T7166] program syz-executor497 not setting count and/or reply_len properly executing program [ 885.301502][ T7167] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 885.301502][ T7167] program syz-executor497 not setting count and/or reply_len properly executing program [ 891.129150][ T7168] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 891.129150][ T7168] program syz-executor497 not setting count and/or reply_len properly executing program [ 897.169035][ T7169] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 897.169035][ T7169] program syz-executor497 not setting count and/or reply_len properly executing program [ 902.199292][ T7170] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 902.199292][ T7170] program syz-executor497 not setting count and/or reply_len properly executing program [ 908.188752][ T7171] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 908.188752][ T7171] program syz-executor497 not setting count and/or reply_len properly executing program [ 914.131326][ T7172] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 914.131326][ T7172] program syz-executor497 not setting count and/or reply_len properly executing program [ 919.322978][ T7173] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 919.322978][ T7173] program syz-executor497 not setting count and/or reply_len properly executing program [ 924.315507][ T7174] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 924.315507][ T7174] program syz-executor497 not setting count and/or reply_len properly executing program [ 929.297034][ T7175] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 929.297034][ T7175] program syz-executor497 not setting count and/or reply_len properly executing program [ 935.332468][ T7176] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 935.332468][ T7176] program syz-executor497 not setting count and/or reply_len properly executing program [ 940.342205][ T7177] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 940.342205][ T7177] program syz-executor497 not setting count and/or reply_len properly executing program [ 945.545111][ T7178] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 945.545111][ T7178] program syz-executor497 not setting count and/or reply_len properly executing program [ 950.651481][ T7179] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 950.651481][ T7179] program syz-executor497 not setting count and/or reply_len properly executing program [ 956.547896][ T7180] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 956.547896][ T7180] program syz-executor497 not setting count and/or reply_len properly executing program [ 962.324775][ T7181] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 962.324775][ T7181] program syz-executor497 not setting count and/or reply_len properly executing program [ 968.082899][ T7182] sg_write: data in/out 298234/1 bytes for SCSI command 0xe2-- guessing data in; [ 968.082899][ T7182] program syz-executor497 not setting count and/or reply_len properly [ 973.827676][ T7155] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88811eab6800 (size 2048): comm "syz-executor497", pid 7159, jiffies 4295021227 (age 136.510s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 20 00 00 00 02 01 00 00 00 00 00 00 08 00 00 00 ............... backtrace: [<000000008416c560>] __kmalloc+0x161/0x2c0 [<00000000ded98c76>] bio_alloc_bioset+0x1b8/0x2c0 [<00000000746540c3>] bio_copy_user_iov+0x113/0x4a0 [<00000000f2e8855b>] blk_rq_map_user_iov+0xc6/0x2b0 [<00000000cc04018d>] blk_rq_map_user+0x71/0xb0 [<0000000028326141>] sg_common_write.isra.0+0x619/0xa10 [<000000009bab9666>] sg_write.part.0+0x325/0x570 [<0000000011493dc6>] sg_write+0x44/0x64 [<000000006873bed5>] __vfs_write+0x43/0xa0 [<00000000bd718342>] vfs_write+0xee/0x210 [<00000000b9262598>] ksys_write+0x7c/0x130 [<000000004c09935a>] __x64_sys_write+0x1e/0x30 [<00000000c1e90ac2>] do_syscall_64+0x76/0x1a0 [<0000000073ed53a4>] entry_SYSCALL_64_after_hwframe+0x44/0xa9