[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.797222][ T26] audit: type=1800 audit(1571466961.376:25): pid=8554 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.821422][ T26] audit: type=1800 audit(1571466961.386:26): pid=8554 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.851206][ T26] audit: type=1800 audit(1571466961.386:27): pid=8554 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 66.974170][ T8720] ================================================================== [ 66.982453][ T8720] BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x358/0x460 [ 66.989953][ T8720] Read of size 43 at addr 0000000000000000 by task syz-executor845/8720 [ 66.998273][ T8720] [ 67.000615][ T8720] CPU: 0 PID: 8720 Comm: syz-executor845 Not tainted 5.4.0-rc1+ #0 [ 67.009231][ T8720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.019292][ T8720] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.022685][ T8720] dump_stack+0x172/0x1f0 [ 67.027033][ T8720] ? llcp_sock_getname+0x358/0x460 [ 67.032161][ T8720] ? llcp_sock_getname+0x358/0x460 [ 67.037310][ T8720] __kasan_report.cold+0x5/0x41 [ 67.042188][ T8720] ? llcp_sock_getname+0x358/0x460 [ 67.047317][ T8720] kasan_report+0x12/0x20 [ 67.051657][ T8720] check_memory_region+0x134/0x1a0 [ 67.056778][ T8720] memcpy+0x24/0x50 [ 67.060598][ T8720] llcp_sock_getname+0x358/0x460 [ 67.065544][ T8720] __sys_getpeername+0x12b/0x290 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.070493][ T8720] ? __ia32_sys_getsockname+0xb0/0xb0 [ 67.075893][ T8720] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.081366][ T8720] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.086840][ T8720] ? do_syscall_64+0x26/0x760 [ 67.091529][ T8720] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.097605][ T8720] ? do_syscall_64+0x26/0x760 [ 67.102386][ T8720] __x64_sys_getpeername+0x73/0xb0 [ 67.107516][ T8720] do_syscall_64+0xfa/0x760 [ 67.112032][ T8720] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.117948][ T8720] RIP: 0033:0x4412c9 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.121851][ T8720] 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 [ 67.141475][ T8720] RSP: 002b:00007fff5d1848d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 67.149892][ T8720] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 67.157874][ T8720] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 67.165853][ T8720] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 67.173861][ T8720] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 67.181844][ T8720] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 67.189856][ T8720] ================================================================== [ 67.198095][ T8720] Disabling lock debugging due to kernel taint [ 67.208769][ T8772] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 67.216712][ T8772] #PF: supervisor read access in kernel mode [ 67.222687][ T8772] #PF: error_code(0x0000) - not-present page [ 67.228642][ T8772] PGD 8a01a067 P4D 8a01a067 PUD a9a17067 PMD 0 [ 67.234867][ T8772] Oops: 0000 [#1] PREEMPT SMP KASAN [ 67.240064][ T8772] CPU: 0 PID: 8772 Comm: syz-executor845 Tainted: G B 5.4.0-rc1+ #0 [ 67.249324][ T8772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.259368][ T8772] RIP: 0010:memcpy_erms+0x6/0x10 [ 67.264288][ T8772] 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 [ 67.283878][ T8772] RSP: 0018:ffff888090e3fd50 EFLAGS: 00010246 [ 67.289920][ T8772] RAX: ffff888090e3fe12 RBX: ffff888090e3fe00 RCX: 000000000000002b [ 67.297882][ T8772] RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff888090e3fe12 [ 67.305832][ T8772] RBP: ffff888090e3fd70 R08: 1ffff110121c7fc2 R09: ffffed10121c7fc8 [ 67.313797][ T8772] R10: ffffed10121c7fc7 R11: ffff888090e3fe3c R12: 000000000000002b [ 67.321749][ T8772] R13: ffff888090e3fe12 R14: 0000000000000000 R15: ffffffff88660be0 [ 67.329700][ T8772] FS: 00000000008e8880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.339492][ T8772] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.346053][ T8772] CR2: 0000000000000000 CR3: 00000000a0164000 CR4: 00000000001406f0 [ 67.354787][ T8772] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.362739][ T8772] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.370686][ T8772] Call Trace: [ 67.373974][ T8772] ? memcpy+0x46/0x50 [ 67.377942][ T8772] llcp_sock_getname+0x358/0x460 [ 67.382860][ T8772] __sys_getpeername+0x12b/0x290 [ 67.387778][ T8772] ? __ia32_sys_getsockname+0xb0/0xb0 [ 67.393134][ T8772] ? __kasan_check_write+0x14/0x20 [ 67.398226][ T8772] ? switch_fpu_return+0x1fa/0x4f0 [ 67.403317][ T8772] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 67.409365][ T8772] __x64_sys_getpeername+0x73/0xb0 [ 67.414469][ T8772] do_syscall_64+0xfa/0x760 [ 67.418957][ T8772] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.424913][ T8772] RIP: 0033:0x4412c9 [ 67.429235][ T8772] 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 [ 67.450037][ T8772] RSP: 002b:00007fff5d1848d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 67.458425][ T8772] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 67.466383][ T8772] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 executing program [ 67.474345][ T8772] RBP: 0000000000010650 R08: 00000000004002c8 R09: 00000000004002c8 [ 67.482312][ T8772] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 67.490263][ T8772] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 67.498216][ T8772] Modules linked in: [ 67.502092][ T8772] CR2: 0000000000000000 [ 67.506234][ T8782] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 67.514060][ T8782] #PF: supervisor read access in kernel mode [ 67.520036][ T8782] #PF: error_code(0x0000) - not-present page [ 67.526009][ T8782] PGD 90e7a067 P4D 90e7a067 PUD 88928067 PMD 0 [ 67.532264][ T8782] Oops: 0000 [#2] PREEMPT SMP KASAN [ 67.537450][ T8782] CPU: 1 PID: 8782 Comm: syz-executor845 Tainted: G B D 5.4.0-rc1+ #0 [ 67.546707][ T8782] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.556804][ T8782] RIP: 0010:memcpy_erms+0x6/0x10 [ 67.561736][ T8782] 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 [ 67.581430][ T8782] RSP: 0018:ffff88808b04fd50 EFLAGS: 00010246 [ 67.587494][ T8782] RAX: ffff88808b04fe12 RBX: ffff88808b04fe00 RCX: 000000000000002b [ 67.595445][ T8782] RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff88808b04fe12 [ 67.603407][ T8782] RBP: ffff88808b04fd70 R08: 1ffff11011609fc2 R09: ffffed1011609fc8 [ 67.611364][ T8782] R10: ffffed1011609fc7 R11: ffff88808b04fe3c R12: 000000000000002b [ 67.619321][ T8782] R13: ffff88808b04fe12 R14: 0000000000000000 R15: ffffffff88660be0 [ 67.627278][ T8782] FS: 00000000008e8880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 67.636183][ T8782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.642743][ T8782] CR2: 0000000000000000 CR3: 000000009a586000 CR4: 00000000001406e0 [ 67.650696][ T8782] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.658644][ T8782] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.666591][ T8782] Call Trace: [ 67.669863][ T8782] ? memcpy+0x46/0x50 [ 67.673830][ T8782] llcp_sock_getname+0x358/0x460 [ 67.678747][ T8782] __sys_getpeername+0x12b/0x290 [ 67.683679][ T8782] ? __ia32_sys_getsockname+0xb0/0xb0 [ 67.689044][ T8782] ? __kasan_check_write+0x14/0x20 [ 67.694135][ T8782] ? switch_fpu_return+0x1fa/0x4f0 [ 67.699401][ T8782] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 67.705448][ T8782] __x64_sys_getpeername+0x73/0xb0 [ 67.710630][ T8782] do_syscall_64+0xfa/0x760 [ 67.715117][ T8782] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.720986][ T8782] RIP: 0033:0x4412c9 [ 67.724871][ T8782] 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 [ 67.744480][ T8782] RSP: 002b:00007fff5d1848d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 67.752879][ T8782] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 67.760830][ T8782] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 67.768790][ T8782] RBP: 000000000001058e R08: 00000000004002c8 R09: 00000000004002c8 [ 67.777174][ T8782] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 67.785132][ T8782] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 67.793091][ T8782] Modules linked in: [ 67.796967][ T8782] CR2: 0000000000000000 [ 67.801119][ T8781] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 67.804635][ T8782] ---[ end trace 0788e7e04b40a1f4 ]--- [ 67.808929][ T8781] #PF: supervisor read access in kernel mode [ 67.808936][ T8781] #PF: error_code(0x0000) - not-present page [ 67.808942][ T8781] PGD 9b3d0067 P4D 9b3d0067 PUD a3618067 PMD 0 [ 67.808962][ T8781] Oops: 0000 [#3] PREEMPT SMP KASAN [ 67.808975][ T8781] CPU: 0 PID: 8781 Comm: syz-executor845 Tainted: G B D 5.4.0-rc1+ #0 [ 67.808981][ T8781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.808998][ T8781] RIP: 0010:memcpy_erms+0x6/0x10 executing program executing program executing program executing program executing program executing program [ 67.809015][ T8781] 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 [ 67.814975][ T8782] RIP: 0010:memcpy_erms+0x6/0x10 [ 67.820409][ T8781] RSP: 0018:ffff888090147d50 EFLAGS: 00010246 [ 67.820420][ T8781] RAX: ffff888090147e12 RBX: ffff888090147e00 RCX: 000000000000002b [ 67.820427][ T8781] RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff888090147e12 [ 67.820435][ T8781] RBP: ffff888090147d70 R08: 1ffff11012028fc2 R09: ffffed1012028fc8 [ 67.820441][ T8781] R10: ffffed1012028fc7 R11: ffff888090147e3c R12: 000000000000002b [ 67.820447][ T8781] R13: ffff888090147e12 R14: 0000000000000000 R15: ffffffff88660be0 [ 67.820456][ T8781] FS: 00000000008e8880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 67.820463][ T8781] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.820470][ T8781] CR2: 0000000000000000 CR3: 000000008b08d000 CR4: 00000000001406f0 [ 67.820486][ T8781] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.828698][ T8782] 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 [ 67.832656][ T8781] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.832660][ T8781] Call Trace: [ 67.832675][ T8781] ? memcpy+0x46/0x50 [ 67.832695][ T8781] llcp_sock_getname+0x358/0x460 [ 67.838244][ T8782] RSP: 0018:ffff888090e3fd50 EFLAGS: 00010246 [ 67.847133][ T8781] __sys_getpeername+0x12b/0x290 [ 67.847146][ T8781] ? __ia32_sys_getsockname+0xb0/0xb0 [ 67.847165][ T8781] ? __kasan_check_write+0x14/0x20 [ 67.847177][ T8781] ? switch_fpu_return+0x1fa/0x4f0 [ 67.847197][ T8781] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 67.860206][ T8782] RAX: ffff888090e3fe12 RBX: ffff888090e3fe00 RCX: 000000000000002b [ 67.862162][ T8781] __x64_sys_getpeername+0x73/0xb0 [ 67.862183][ T8781] do_syscall_64+0xfa/0x760 [ 67.884829][ T8782] RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff888090e3fe12 [ 67.886714][ T8781] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.886730][ T8781] RIP: 0033:0x4412c9 [ 67.895678][ T8782] RBP: ffff888090e3fd70 R08: 1ffff110121c7fc2 R09: ffffed10121c7fc8 [ 67.900821][ T8781] 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 [ 67.900828][ T8781] RSP: 002b:00007fff5d1848d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 [ 67.900839][ T8781] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 67.900844][ T8781] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 67.900851][ T8781] RBP: 0000000000010673 R08: 00000000004002c8 R09: 00000000004002c8 [ 67.900857][ T8781] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 67.900864][ T8781] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 67.900873][ T8781] Modules linked in: [ 67.900881][ T8781] CR2: 0000000000000000 [ 67.907199][ T8772] ---[ end trace 0788e7e04b40a1f5 ]--- [ 67.909618][ T8720] Kernel panic - not syncing: panic_on_warn set ... [ 67.917354][ T8772] RIP: 0010:memcpy_erms+0x6/0x10 [ 67.926326][ T8720] Kernel Offset: disabled [ 68.178605][ T8720] Rebooting in 86400 seconds..