Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 42.821236] audit: type=1800 audit(1575094119.333:33): pid=7583 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 46.845765] kauditd_printk_skb: 1 callbacks suppressed [ 46.845779] audit: type=1400 audit(1575094123.353:35): avc: denied { map } for pid=7758 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 '10.128.15.214' (ECDSA) to the list of known hosts. [ 53.402127] audit: type=1400 audit(1575094129.913:36): avc: denied { map } for pid=7770 comm="syz-executor984" path="/root/syz-executor984601583" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 53.415229] ================================================================== [ 53.431443] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 53.436342] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 53.444908] PGD 9b82f067 [ 53.452784] Read of size 1 at addr 0000000000000000 by task syz-executor984/7777 [ 53.452794] P4D 9b82f067 [ 53.455535] [ 53.463053] PUD 91db6067 [ 53.465797] CPU: 1 PID: 7777 Comm: syz-executor984 Not tainted 4.19.86-syzkaller #0 [ 53.467403] PMD 0 [ 53.470155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.480068] Call Trace: [ 53.490191] Oops: 0000 [#1] PREEMPT SMP KASAN [ 53.492771] dump_stack+0x197/0x210 [ 53.497261] CPU: 0 PID: 7779 Comm: syz-executor984 Not tainted 4.19.86-syzkaller #0 [ 53.501941] ? llcp_sock_getname+0x358/0x460 [ 53.509951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.514974] kasan_report.cold+0x199/0x2ba [ 53.524329] RIP: 0010:memcpy_erms+0x6/0x10 [ 53.528557] check_memory_region+0x123/0x190 [ 53.532782] Code: 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe [ 53.537205] memcpy+0x24/0x50 [ 53.556839] RSP: 0018:ffff88807da7fd50 EFLAGS: 00010246 [ 53.559947] llcp_sock_getname+0x358/0x460 [ 53.565296] RAX: ffff88807da7fe12 RBX: ffff88807da7fe00 RCX: 0000000000000001 [ 53.569540] __sys_getpeername+0x12b/0x290 [ 53.576790] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88807da7fe12 [ 53.581027] ? __ia32_sys_getsockname+0xb0/0xb0 [ 53.588285] RBP: ffff88807da7fd70 R08: 1ffff1100fb4ffc2 R09: ffffed100fb4ffc3 [ 53.592955] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.600220] R10: ffffed100fb4ffc2 R11: ffff88807da7fe12 R12: 0000000000000001 [ 53.605593] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.612871] R13: ffff88807da7fe12 R14: 0000000000000000 R15: ffffffff886589a0 [ 53.617646] ? do_syscall_64+0x26/0x620 [ 53.625603] FS: 0000000001c0b880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 53.629678] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.637904] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.643292] ? do_syscall_64+0x26/0x620 [ 53.649272] CR2: 0000000000000000 CR3: 00000000a7f8f000 CR4: 00000000001406f0 [ 53.653461] __x64_sys_getpeername+0x73/0xb0 [ 53.660722] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.665567] do_syscall_64+0xfd/0x620 [ 53.673003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.676820] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.684172] Call Trace: [ 53.690596] RIP: 0033:0x441299 [ 53.693462] ? memcpy+0x46/0x50 [ 53.696656] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.699924] llcp_sock_getname+0x358/0x460 [ 53.718909] RSP: 002b:00007fffe852d998 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 53.723147] __sys_getpeername+0x12b/0x290 [ 53.723168] ? __ia32_sys_getsockname+0xb0/0xb0 [ 53.730895] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299 [ 53.735236] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.739884] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 53.747166] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.751912] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 53.759189] ? do_syscall_64+0x26/0x620 [ 53.763923] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010 [ 53.771183] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.775124] R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000 [ 53.782390] ? do_syscall_64+0x26/0x620 [ 53.787738] ================================================================== [ 53.795011] __x64_sys_getpeername+0x73/0xb0 [ 53.805510] Kernel panic - not syncing: panic_on_warn set ... [ 53.805510] [ 53.806319] do_syscall_64+0xfd/0x620 [ 53.821931] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.827106] RIP: 0033:0x441299 [ 53.830473] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.849460] RSP: 002b:00007fffe852d998 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 53.857166] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299 [ 53.864432] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 53.871698] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 53.878969] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010 [ 53.886246] R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000 [ 53.893541] Modules linked in: [ 53.896733] CR2: 0000000000000000 [ 53.901653] Kernel Offset: disabled [ 53.905285] Rebooting in 86400 seconds..