[ 43.437238] audit: type=1800 audit(1571876498.173:30): pid=7689 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=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 48.768132] kauditd_printk_skb: 4 callbacks suppressed [ 48.768146] audit: type=1400 audit(1571876503.533:35): avc: denied { map } for pid=7862 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 '10.128.1.32' (ECDSA) to the list of known hosts. [ 58.513772] audit: type=1400 audit(1571876513.283:36): avc: denied { map } for pid=7874 comm="syz-executor165" path="/root/syz-executor165645079" 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 [ 58.526975] ================================================================== [ 58.543622] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 58.547487] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 58.555443] PGD 7bef1067 [ 58.562185] Read of size 1 at addr 0000000000000000 by task syz-executor165/7882 [ 58.562193] P4D 7bef1067 [ 58.564928] [ 58.572440] PUD a1155067 [ 58.575185] CPU: 1 PID: 7882 Comm: syz-executor165 Not tainted 4.19.80 #0 [ 58.576783] PMD 0 [ 58.579524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.588912] Call Trace: [ 58.598259] Oops: 0000 [#1] PREEMPT SMP KASAN [ 58.600832] dump_stack+0x172/0x1f0 [ 58.605313] CPU: 0 PID: 7883 Comm: syz-executor165 Not tainted 4.19.80 #0 [ 58.609004] ? llcp_sock_getname+0x358/0x460 [ 58.616018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.620431] kasan_report.cold+0x199/0x2ba [ 58.629794] RIP: 0010:memcpy_erms+0x6/0x10 [ 58.634024] check_memory_region+0x123/0x190 [ 58.638248] 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 [ 58.642669] memcpy+0x24/0x50 [ 58.661905] RSP: 0018:ffff88808e397d50 EFLAGS: 00010246 [ 58.665001] llcp_sock_getname+0x358/0x460 [ 58.665017] __sys_getpeername+0x12b/0x290 [ 58.670608] RAX: ffff88808e397e12 RBX: ffff88808e397e00 RCX: 0000000000000001 [ 58.674858] ? __ia32_sys_getsockname+0xb0/0xb0 [ 58.679061] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88808e397e12 [ 58.686340] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.691005] RBP: ffff88808e397d70 R08: 1ffff11011c72fc2 R09: ffffed1011c72fc3 [ 58.699256] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.703982] R10: ffffed1011c72fc2 R11: ffff88808e397e12 R12: 0000000000000001 [ 58.711281] ? do_syscall_64+0x26/0x620 [ 58.716032] R13: ffff88808e397e12 R14: 0000000000000000 R15: ffffffff87fbf4a0 [ 58.723300] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.727268] FS: 0000000001f95940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 58.734527] ? do_syscall_64+0x26/0x620 [ 58.739864] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.748113] __x64_sys_getpeername+0x73/0xb0 [ 58.752324] CR2: 0000000000000000 CR3: 000000009985d000 CR4: 00000000001406f0 [ 58.758207] do_syscall_64+0xfd/0x620 [ 58.762581] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.769845] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.773626] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.781166] RIP: 0033:0x441789 [ 58.786340] Call Trace: [ 58.793775] 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 [ 58.796973] ? memcpy+0x46/0x50 [ 58.799530] RSP: 002b:00007ffeaec00be8 EFLAGS: 00000246 [ 58.820613] llcp_sock_getname+0x358/0x460 [ 58.824296] ORIG_RAX: 0000000000000034 [ 58.829657] __sys_getpeername+0x12b/0x290 [ 58.833994] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441789 [ 58.837959] ? __ia32_sys_getsockname+0xb0/0xb0 [ 58.842173] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 58.849446] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.854600] RBP: 0000000000000000 R08: 0000000000402590 R09: 0000000000402590 [ 58.862048] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.866975] R10: 0000000000402590 R11: 0000000000000246 R12: 0000000000402500 [ 58.874247] ? do_syscall_64+0x26/0x620 [ 58.878991] R13: 0000000000402590 R14: 0000000000000000 R15: 0000000000000000 [ 58.886259] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.890389] ================================================================== [ 58.897838] ? do_syscall_64+0x26/0x620 [ 58.914793] __x64_sys_getpeername+0x73/0xb0 [ 58.919213] do_syscall_64+0xfd/0x620 [ 58.923024] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.928205] RIP: 0033:0x441789 [ 58.932086] 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 [ 58.951948] RSP: 002b:00007ffeaec00be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 58.959910] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441789 [ 58.967170] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 58.974431] RBP: 0000000000000000 R08: 0000000000402590 R09: 0000000000402590 [ 58.981691] R10: 0000000000402590 R11: 0000000000000246 R12: 0000000000402500 [ 58.988953] R13: 0000000000402590 R14: 0000000000000000 R15: 0000000000000000 [ 58.996402] Modules linked in: [ 58.999588] CR2: 0000000000000000 [ 59.003104] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 59.011183] PGD 79dfd067 P4D 79dfd067 PUD 8fe7d067 PMD 0 [ 59.017166] Oops: 0000 [#2] PREEMPT SMP KASAN [ 59.021657] CPU: 1 PID: 7885 Comm: syz-executor165 Tainted: G B D 4.19.80 #0 [ 59.029960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.040378] RIP: 0010:memcpy_erms+0x6/0x10 [ 59.044634] 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 [ 59.064838] RSP: 0018:ffff88808d7dfd50 EFLAGS: 00010246 [ 59.070283] RAX: ffff88808d7dfe12 RBX: ffff88808d7dfe00 RCX: 0000000000000001 [ 59.077548] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88808d7dfe12 [ 59.084825] RBP: ffff88808d7dfd70 R08: 1ffff11011afbfc2 R09: ffffed1011afbfc3 [ 59.092095] R10: ffffed1011afbfc2 R11: ffff88808d7dfe12 R12: 0000000000000001 [ 59.099372] R13: ffff88808d7dfe12 R14: 0000000000000000 R15: ffffffff87fbf4a0 [ 59.106641] FS: 0000000001f95940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 59.114861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.120741] CR2: 0000000000000000 CR3: 00000000a50a9000 CR4: 00000000001406e0 [ 59.128009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.135486] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.142831] Call Trace: [ 59.145427] ? memcpy+0x46/0x50 [ 59.149148] llcp_sock_getname+0x358/0x460 [ 59.153390] __sys_getpeername+0x12b/0x290 [ 59.157623] ? __ia32_sys_getsockname+0xb0/0xb0 [ 59.162299] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 59.167660] __x64_sys_getpeername+0x73/0xb0 [ 59.172167] do_syscall_64+0xfd/0x620 [ 59.175971] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.181240] RIP: 0033:0x441789 [ 59.184430] 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 [ 59.203498] RSP: 002b:00007ffeaec00be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 59.211204] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441789 [ 59.218647] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 59.230857] RBP: 0000000000000000 R08: 0000000000402590 R09: 0000000000402590 [ 59.238120] R10: 0000000000402590 R11: 0000000000000246 R12: 0000000000402500 [ 59.245397] R13: 0000000000402590 R14: 0000000000000000 R15: 0000000000000000 [ 59.252661] Modules linked in: [ 59.255848] CR2: 0000000000000000 [ 59.259309] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 59.264908] ---[ end trace 2fe4cf11cba1849a ]--- [ 59.267304] PGD 8200b067 P4D 8200b067 PUD 93690067 PMD 0 [ 59.275609] RIP: 0010:memcpy_erms+0x6/0x10 [ 59.277624] Oops: 0000 [#3] PREEMPT SMP KASAN [ 59.277638] CPU: 0 PID: 7887 Comm: syz-executor165 Tainted: G B D 4.19.80 #0 [ 59.277645] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.277662] RIP: 0010:memcpy_erms+0x6/0x10 [ 59.282715] 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 [ 59.286391] 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 [ 59.286397] RSP: 0018:ffff888090dd7d50 EFLAGS: 00010246 [ 59.286409] RAX: ffff888090dd7e12 RBX: ffff888090dd7e00 RCX: 0000000000000001 [ 59.286419] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff888090dd7e12 [ 59.294940] Kernel panic - not syncing: panic_on_warn set ... [ 59.294940] [ 59.304066] RBP: ffff888090dd7d70 R08: 1ffff110121bafc2 R09: ffffed10121bafc3 [ 59.380742] R10: ffffed10121bafc2 R11: ffff888090dd7e12 R12: 0000000000000001 [ 59.388191] R13: ffff888090dd7e12 R14: 0000000000000000 R15: ffffffff87fbf4a0 [ 59.395458] FS: 0000000001f95940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 59.403783] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.409661] CR2: 0000000000000000 CR3: 000000008766d000 CR4: 00000000001406f0 [ 59.416951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.424224] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.431487] Call Trace: [ 59.434107] ? memcpy+0x46/0x50 [ 59.437387] llcp_sock_getname+0x358/0x460 [ 59.441619] __sys_getpeername+0x12b/0x290 [ 59.445861] ? __ia32_sys_getsockname+0xb0/0xb0 [ 59.450534] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 59.455892] __x64_sys_getpeername+0x73/0xb0 [ 59.460294] do_syscall_64+0xfd/0x620 [ 59.464091] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.469277] RIP: 0033:0x441789 [ 59.472483] 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 [ 59.492250] RSP: 002b:00007ffeaec00be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 59.499983] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441789 [ 59.507250] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 59.514601] RBP: 0000000000000000 R08: 0000000000402590 R09: 0000000000402590 [ 59.521864] R10: 0000000000402590 R11: 0000000000000246 R12: 0000000000402500 [ 59.529128] R13: 0000000000402590 R14: 0000000000000000 R15: 0000000000000000 [ 59.536409] Modules linked in: [ 59.539594] CR2: 0000000000000000 [ 59.544559] Kernel Offset: disabled [ 59.548304] Rebooting in 86400 seconds..