[ 34.330790] audit: type=1800 audit(1555828591.691:33): pid=6880 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 34.352850] audit: type=1800 audit(1555828591.691:34): pid=6880 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=2456 res=0 [ 35.473383] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.772806] audit: type=1400 audit(1555828593.131:35): avc: denied { map } for pid=7053 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 [ 35.853039] random: sshd: uninitialized urandom read (32 bytes read) [ 36.469077] random: sshd: uninitialized urandom read (32 bytes read) [ 36.675115] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.181' (ECDSA) to the list of known hosts. [ 42.273471] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 42.396808] audit: type=1400 audit(1555828599.751:36): avc: denied { map } for pid=7065 comm="syz-executor423" path="/root/syz-executor423430392" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 42.435286] kasan: CONFIG_KASAN_INLINE enabled [ 42.439962] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.447675] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.453912] Modules linked in: [ 42.457101] CPU: 0 PID: 7065 Comm: syz-executor423 Not tainted 4.14.113 #3 [ 42.464108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.473451] task: ffff8880a9ec4500 task.stack: ffff88809de08000 [ 42.479515] RIP: 0010:scatterwalk_copychunks+0x4d6/0x6b0 [ 42.484945] RSP: 0018:ffff88809de0f3d8 EFLAGS: 00010202 [ 42.490287] RAX: dffffc0000000000 RBX: 0000000000001000 RCX: ffff8880a0dcd534 [ 42.497540] RDX: 0000000000000002 RSI: ffff888098480000 RDI: ffff8880a0dcd528 [ 42.504795] RBP: ffff88809de0f448 R08: ffffed1012136352 R09: 0000000000000002 [ 42.512052] R10: ffffed1012136351 R11: ffff8880909b1a8c R12: 0000000000001000 [ 42.519314] R13: 0000000000000000 R14: ffff88809de0f4a0 R15: 0000000000003000 [ 42.526567] FS: 0000000001e90880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 [ 42.534775] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.540652] CR2: 0000000000455350 CR3: 000000009df46000 CR4: 00000000001406f0 [ 42.547916] Call Trace: [ 42.550495] scatterwalk_map_and_copy+0x12f/0x1d0 [ 42.562025] ? scatterwalk_copychunks+0x6b0/0x6b0 [ 42.566901] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 42.572338] ? rcu_read_lock_sched_held+0x110/0x130 [ 42.577342] ? __kmalloc+0x379/0x7a0 [ 42.581056] ? gcmaes_encrypt.constprop.0+0x143/0xb90 [ 42.586244] gcmaes_encrypt.constprop.0+0x1d2/0xb90 [ 42.591244] ? __lock_is_held+0xb6/0x140 [ 42.595301] generic_gcmaes_encrypt+0xf4/0x130 [ 42.599862] ? helper_rfc4106_encrypt+0x320/0x320 [ 42.604693] gcmaes_wrapper_encrypt+0x101/0x170 [ 42.609353] tls_push_record+0x90b/0x1210 [ 42.613483] tls_sw_sendpage+0x437/0xb50 [ 42.617524] ? tls_sw_sendmsg+0x1020/0x1020 [ 42.621826] ? kfree+0x186/0x270 [ 42.625172] ? kvfree+0x4d/0x60 [ 42.628457] inet_sendpage+0x15a/0x580 [ 42.632325] ? tls_sw_sendmsg+0x1020/0x1020 [ 42.636653] kernel_sendpage+0x95/0xf0 [ 42.640526] ? inet_sendmsg+0x500/0x500 [ 42.644477] sock_sendpage+0x8b/0xc0 [ 42.648167] ? kernel_sendpage+0xf0/0xf0 [ 42.652225] pipe_to_sendpage+0x244/0x340 [ 42.656349] ? direct_splice_actor+0x1a0/0x1a0 [ 42.660913] __splice_from_pipe+0x351/0x790 [ 42.665212] ? direct_splice_actor+0x1a0/0x1a0 [ 42.669773] ? direct_splice_actor+0x1a0/0x1a0 [ 42.674331] splice_from_pipe+0xf0/0x150 [ 42.678399] ? splice_shrink_spd+0xb0/0xb0 [ 42.682620] generic_splice_sendpage+0x3c/0x50 [ 42.687182] ? splice_from_pipe+0x150/0x150 [ 42.691495] direct_splice_actor+0x126/0x1a0 [ 42.695881] splice_direct_to_actor+0x2a1/0x7b0 [ 42.700528] ? generic_pipe_buf_nosteal+0x10/0x10 [ 42.705347] ? do_splice_to+0x170/0x170 [ 42.709300] ? rw_verify_area+0xea/0x2b0 [ 42.713339] do_splice_direct+0x18d/0x230 [ 42.717464] ? splice_direct_to_actor+0x7b0/0x7b0 [ 42.722292] ? rw_verify_area+0xea/0x2b0 [ 42.726347] do_sendfile+0x4db/0xbd0 [ 42.730067] ? do_compat_pwritev64+0x140/0x140 [ 42.734646] ? do_sys_open+0x221/0x430 [ 42.738531] SyS_sendfile64+0x102/0x110 [ 42.742484] ? SyS_sendfile+0x130/0x130 [ 42.746438] ? do_syscall_64+0x53/0x630 [ 42.750390] ? SyS_sendfile+0x130/0x130 [ 42.754338] do_syscall_64+0x1eb/0x630 [ 42.758222] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.763063] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.768230] RIP: 0033:0x4403e9 [ 42.771428] RSP: 002b:00007ffe6ad1e9c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 42.779117] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004403e9 [ 42.786372] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 42.793668] RBP: 00000000006ca018 R08: 0000000000000012 R09: 65732f636f72702f [ 42.800917] R10: 0000000000010010 R11: 0000000000000246 R12: 0000000000401cd0 [ 42.808163] R13: 0000000000401d60 R14: 0000000000000000 R15: 0000000000000000 [ 42.815420] Code: 00 00 fc ff df 80 3c 02 00 0f 85 37 01 00 00 49 8d 45 10 4d 89 2e 48 89 c2 48 89 45 c0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 7d 01 00 00 48 b8 00 00 00 [ 42.834516] RIP: scatterwalk_copychunks+0x4d6/0x6b0 RSP: ffff88809de0f3d8 [ 42.841813] ---[ end trace 4e117918face6864 ]--- [ 42.846568] Kernel panic - not syncing: Fatal exception [ 42.852642] Kernel Offset: disabled [ 42.856287] Rebooting in 86400 seconds..