[....] 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. [ 37.310003] audit: type=1800 audit(1571774500.813:33): pid=7301 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: [ 40.948557] kauditd_printk_skb: 1 callbacks suppressed [ 40.948571] audit: type=1400 audit(1571774504.443:35): avc: denied { map } for pid=7476 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 '10.128.0.118' (ECDSA) to the list of known hosts. [ 47.670685] audit: type=1400 audit(1571774511.173:36): avc: denied { map } for pid=7488 comm="syz-executor352" path="/root/syz-executor352558288" 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 [ 47.683302] ================================================================== [ 47.700145] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 47.704377] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 47.712350] PGD 90ca3067 [ 47.719078] Read of size 3 at addr 0000000000000000 by task syz-executor352/7496 [ 47.719086] P4D 90ca3067 [ 47.721821] [ 47.729330] PUD 90ca4067 [ 47.732072] CPU: 0 PID: 7496 Comm: syz-executor352 Not tainted 4.19.80 #0 [ 47.733667] PMD 0 [ 47.736404] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.745425] Call Trace: [ 47.754759] Oops: 0000 [#1] PREEMPT SMP KASAN [ 47.757326] dump_stack+0x172/0x1f0 [ 47.761794] CPU: 1 PID: 7497 Comm: syz-executor352 Not tainted 4.19.80 #0 [ 47.765399] ? llcp_sock_getname+0x358/0x460 [ 47.772296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.776698] kasan_report.cold+0x199/0x2ba [ 47.786035] RIP: 0010:memcpy_erms+0x6/0x10 [ 47.790244] check_memory_region+0x123/0x190 [ 47.794457] 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 [ 47.798842] memcpy+0x24/0x50 [ 47.817729] RSP: 0018:ffff888096217d50 EFLAGS: 00010246 [ 47.820817] llcp_sock_getname+0x358/0x460 [ 47.820832] __sys_getpeername+0x12b/0x290 [ 47.826164] RAX: ffff888096217e12 RBX: ffff888096217e00 RCX: 0000000000000003 [ 47.830376] ? __ia32_sys_getsockname+0xb0/0xb0 [ 47.834581] RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffff888096217e12 [ 47.841837] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.846477] RBP: ffff888096217d70 R08: 1ffff11012c42fc2 R09: ffffed1012c42fc3 [ 47.853725] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.858453] R10: ffffed1012c42fc2 R11: ffff888096217e14 R12: 0000000000000003 [ 47.865702] ? do_syscall_64+0x26/0x620 [ 47.870427] R13: ffff888096217e12 R14: 0000000000000000 R15: ffffffff87fbf4a0 [ 47.878382] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.882332] FS: 0000000001e6c880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.889584] ? do_syscall_64+0x26/0x620 [ 47.894921] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.903137] __x64_sys_getpeername+0x73/0xb0 [ 47.907081] CR2: 0000000000000000 CR3: 00000000917e6000 CR4: 00000000001406e0 [ 47.912942] do_syscall_64+0xfd/0x620 [ 47.917321] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.924580] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.928350] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.935597] RIP: 0033:0x441299 [ 47.940753] Call Trace: [ 47.948016] 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 [ 47.951185] ? memcpy+0x46/0x50 [ 47.953740] RSP: 002b:00007ffe0b9e7488 EFLAGS: 00000246 [ 47.972626] llcp_sock_getname+0x358/0x460 [ 47.975882] ORIG_RAX: 0000000000000034 [ 47.981224] __sys_getpeername+0x12b/0x290 [ 47.985429] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299 [ 47.989381] ? __ia32_sys_getsockname+0xb0/0xb0 [ 47.993590] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 48.000845] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.005481] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 48.012732] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.017458] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010 [ 48.024714] ? do_syscall_64+0x26/0x620 [ 48.029441] R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000 [ 48.036706] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.040652] ================================================================== [ 48.047912] ? do_syscall_64+0x26/0x620 [ 48.060434] Kernel panic - not syncing: panic_on_warn set ... [ 48.060434] [ 48.060596] __x64_sys_getpeername+0x73/0xb0 [ 48.076274] do_syscall_64+0xfd/0x620 [ 48.080066] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.085240] RIP: 0033:0x441299 [ 48.088420] 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 [ 48.107307] RSP: 002b:00007ffe0b9e7488 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 48.115003] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299 [ 48.122262] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 48.129516] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 48.136771] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010 [ 48.144027] R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000 [ 48.151287] Modules linked in: [ 48.154473] CR2: 0000000000000000 [ 48.159170] Kernel Offset: disabled [ 48.162808] Rebooting in 86400 seconds..