[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 72.022194][ T26] kauditd_printk_skb: 9 callbacks suppressed [ 72.022208][ T26] audit: type=1400 audit(1572294241.286:41): avc: denied { map } for pid=9238 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 78.553095][ T26] audit: type=1400 audit(1572294247.816:42): avc: denied { map } for pid=9250 comm="syz-executor475" path="/root/syz-executor475813654" 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 [ 78.566101][ T9258] ================================================================== [ 78.584091][ T9259] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 78.588179][ T9258] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 78.595957][ T9259] #PF: supervisor read access in kernel mode [ 78.603387][ T9258] Read of size 43 at addr 0000000000000000 by task syz-executor475/9258 [ 78.609331][ T9259] #PF: error_code(0x0000) - not-present page [ 78.617619][ T9258] [ 78.623569][ T9259] PGD 83851067 P4D 83851067 PUD 83854067 PMD 0 [ 78.625878][ T9258] CPU: 0 PID: 9258 Comm: syz-executor475 Not tainted 5.4.0-rc5+ #0 [ 78.632084][ T9259] Oops: 0000 [#1] PREEMPT SMP KASAN [ 78.639942][ T9258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.645119][ T9259] CPU: 1 PID: 9259 Comm: syz-executor475 Not tainted 5.4.0-rc5+ #0 [ 78.655140][ T9258] Call Trace: [ 78.663008][ T9259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.666270][ T9258] dump_stack+0x172/0x1f0 [ 78.676298][ T9259] RIP: 0010:memcpy_erms+0x6/0x10 [ 78.680598][ T9258] ? llcp_sock_getname+0x358/0x460 [ 78.685503][ T9259] 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 [ 78.690587][ T9258] ? llcp_sock_getname+0x358/0x460 [ 78.710167][ T9259] RSP: 0018:ffff88808705fd50 EFLAGS: 00010246 [ 78.715252][ T9258] __kasan_report.cold+0x5/0x41 [ 78.721281][ T9259] RAX: ffff88808705fe12 RBX: ffff88808705fe00 RCX: 000000000000002b [ 78.726106][ T9258] ? llcp_sock_getname+0x358/0x460 [ 78.734046][ T9259] RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff88808705fe12 [ 78.739130][ T9258] kasan_report+0x12/0x20 [ 78.747072][ T9259] RBP: ffff88808705fd70 R08: 1ffff11010e0bfc2 R09: ffffed1010e0bfc8 [ 78.751373][ T9258] check_memory_region+0x134/0x1a0 [ 78.759314][ T9259] R10: ffffed1010e0bfc7 R11: ffff88808705fe3c R12: 000000000000002b [ 78.764401][ T9258] memcpy+0x24/0x50 [ 78.772347][ T9259] R13: ffff88808705fe12 R14: 0000000000000000 R15: ffffffff886612a0 [ 78.776136][ T9258] llcp_sock_getname+0x358/0x460 [ 78.784075][ T9259] FS: 0000000001a6d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 78.788988][ T9258] __sys_getpeername+0x12b/0x290 [ 78.797880][ T9259] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.802793][ T9258] ? __ia32_sys_getsockname+0xb0/0xb0 [ 78.809342][ T9259] CR2: 0000000000000000 CR3: 0000000099f39000 CR4: 00000000001406e0 [ 78.814688][ T9258] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 78.822631][ T9259] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.828086][ T9258] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 78.836027][ T9259] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.841463][ T9258] ? do_syscall_64+0x26/0x760 [ 78.849404][ T9259] Call Trace: [ 78.854063][ T9258] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.857320][ T9259] ? memcpy+0x46/0x50 [ 78.863356][ T9258] ? do_syscall_64+0x26/0x760 [ 78.867312][ T9259] llcp_sock_getname+0x358/0x460 [ 78.871957][ T9258] __x64_sys_getpeername+0x73/0xb0 [ 78.876875][ T9259] __sys_getpeername+0x12b/0x290 [ 78.881966][ T9258] do_syscall_64+0xfa/0x760 [ 78.886961][ T9259] ? __ia32_sys_getsockname+0xb0/0xb0 [ 78.891434][ T9258] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.896776][ T9259] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 78.902637][ T9258] RIP: 0033:0x4412c9 [ 78.908066][ T9259] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 78.911931][ T9258] 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 [ 78.917370][ T9259] ? do_syscall_64+0x26/0x760 [ 78.936953][ T9258] RSP: 002b:00007ffea34dd158 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 78.941606][ T9259] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.949989][ T9258] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 78.956030][ T9259] ? do_syscall_64+0x26/0x760 [ 78.963964][ T9258] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 78.968618][ T9259] __x64_sys_getpeername+0x73/0xb0 [ 78.976556][ T9258] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 78.981640][ T9259] do_syscall_64+0xfa/0x760 [ 78.989582][ T9258] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 executing program executing program executing program [ 78.989596][ T9258] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 78.994091][ T9259] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.002029][ T9258] ================================================================== [ 79.009986][ T9259] RIP: 0033:0x4412c9 [ 79.023737][ T9258] Kernel panic - not syncing: panic_on_warn set ... [ 79.023908][ T9259] 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 [ 79.053915][ T9259] RSP: 002b:00007ffea34dd158 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 79.062307][ T9259] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 79.070260][ T9259] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 79.078214][ T9259] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 79.086177][ T9259] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 79.094139][ T9259] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 79.102100][ T9259] Modules linked in: [ 79.105974][ T9259] CR2: 0000000000000000 [ 79.111463][ T9258] Kernel Offset: disabled [ 79.115789][ T9258] Rebooting in 86400 seconds..