[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 74.666039][ T25] kauditd_printk_skb: 9 callbacks suppressed [ 74.666052][ T25] audit: type=1400 audit(1575302112.161:41): avc: denied { map } for pid=9645 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 '10.128.15.217' (ECDSA) to the list of known hosts. [ 81.220078][ T25] audit: type=1400 audit(1575302118.711:42): avc: denied { map } for pid=9657 comm="syz-executor888" path="/root/syz-executor888217599" 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 [ 81.249652][ T9658] IPVS: ftp: loaded support on port[0] = 21 executing program [ 81.277449][ T25] audit: type=1400 audit(1575302118.771:43): avc: denied { create } for pid=9658 comm="syz-executor888" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 81.302913][ T25] audit: type=1400 audit(1575302118.771:44): avc: denied { write } for pid=9658 comm="syz-executor888" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 81.327963][ T25] audit: type=1400 audit(1575302118.771:45): avc: denied { read } for pid=9658 comm="syz-executor888" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 81.352541][ T25] audit: type=1400 audit(1575302118.771:46): avc: denied { open } for pid=9659 comm="syz-executor888" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 [ 81.376265][ T25] audit: type=1400 audit(1575302118.771:47): avc: denied { kernel } for pid=9659 comm="syz-executor888" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 87.021605][ T9748] ------------[ cut here ]------------ [ 87.027215][ T9748] kernel BUG at fs/pipe.c:582! [ 87.032125][ T9748] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 87.038241][ T9748] CPU: 0 PID: 9748 Comm: syz-executor888 Not tainted 5.4.0-syzkaller #0 [ 87.046557][ T9748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.056613][ T9748] RIP: 0010:pipe_poll+0x37f/0x400 [ 87.061621][ T9748] Code: ff 85 db 75 09 e8 b1 ee b5 ff 41 83 ce 08 e8 a8 ee b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 91 ee b5 ff <0f> 0b e8 ca 40 f3 ff e9 ed fc ff ff e8 c0 40 f3 ff e9 b3 fd ff ff [ 87.081229][ T9748] RSP: 0018:ffff8880a7d97698 EFLAGS: 00010293 [ 87.087286][ T9748] RAX: ffff88808da96300 RBX: ffff8880a116b000 RCX: ffffffff81bef79a [ 87.095255][ T9748] RDX: 0000000000000000 RSI: ffffffff81bef9bf RDI: 0000000000000004 [ 87.103299][ T9748] RBP: ffff8880a7d976d0 R08: ffff88808da96300 R09: ffff88808da96b90 [ 87.111259][ T9748] R10: fffffbfff146e190 R11: ffffffff8a370c87 R12: ffff88809b986d40 [ 87.119224][ T9748] R13: 00000000ffffffff R14: 0000000000000001 R15: 000000000000071b [ 87.127188][ T9748] FS: 00007f6eec84c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 87.136106][ T9748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.142679][ T9748] CR2: 0000000021000000 CR3: 0000000093a9e000 CR4: 00000000001406f0 [ 87.150642][ T9748] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.158598][ T9748] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.166556][ T9748] Call Trace: [ 87.169831][ T9748] ? pipe_unlock+0x80/0x80 [ 87.174239][ T9748] do_select+0x922/0x16f0 [ 87.178574][ T9748] ? select_estimate_accuracy+0x330/0x330 [ 87.184278][ T9748] ? finish_task_switch+0x147/0x750 [ 87.189482][ T9748] ? poll_freewait+0x260/0x260 [ 87.194227][ T9748] ? poll_freewait+0x260/0x260 [ 87.198977][ T9748] ? poll_freewait+0x260/0x260 [ 87.203727][ T9748] ? poll_freewait+0x260/0x260 [ 87.208481][ T9748] ? __kasan_check_read+0x11/0x20 [ 87.213487][ T9748] ? __lock_acquire+0x16f2/0x4a00 [ 87.218491][ T9748] ? mark_lock+0xc2/0x1220 [ 87.222907][ T9748] ? futex_wait_queue_me+0x3cc/0x590 [ 87.228175][ T9748] ? futex_cleanup+0xe50/0xe50 [ 87.232937][ T9748] ? __might_fault+0x12b/0x1e0 [ 87.237699][ T9748] ? find_held_lock+0x35/0x130 [ 87.242445][ T9748] ? __might_fault+0x12b/0x1e0 [ 87.247209][ T9748] ? core_sys_select+0x1f5/0x8c0 [ 87.252275][ T9748] ? lock_downgrade+0x920/0x920 [ 87.257122][ T9748] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 87.263348][ T9748] core_sys_select+0x53c/0x8c0 [ 87.268111][ T9748] ? core_sys_select+0x53c/0x8c0 [ 87.273050][ T9748] ? do_compat_pselect+0x230/0x230 [ 87.278153][ T9748] ? poll_select_set_timeout+0xd4/0x130 [ 87.283695][ T9748] ? poll_select_set_timeout+0xd4/0x130 [ 87.289230][ T9748] ? lock_downgrade+0x920/0x920 [ 87.294079][ T9748] ? ktime_get_ts64+0x110/0x3e0 [ 87.298938][ T9748] ? poll_select_set_timeout+0xd4/0x130 [ 87.304468][ T9748] ? ktime_get_ts64+0x110/0x3e0 [ 87.309303][ T9748] ? lockdep_hardirqs_on+0x421/0x5e0 [ 87.314694][ T9748] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 87.320402][ T9748] ? timespec64_add_safe+0x189/0x210 [ 87.325669][ T9748] ? nsec_to_clock_t+0x30/0x30 [ 87.330431][ T9748] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 87.336668][ T9748] ? set_user_sigmask+0x166/0x1e0 [ 87.341763][ T9748] ? sigprocmask+0x2b0/0x2b0 [ 87.346342][ T9748] do_pselect.constprop.0+0x199/0x1e0 [ 87.351712][ T9748] ? kern_select+0x1e0/0x1e0 [ 87.356300][ T9748] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 87.361743][ T9748] __x64_sys_pselect6+0x1fc/0x2e0 [ 87.366757][ T9748] do_syscall_64+0xfa/0x790 [ 87.371279][ T9748] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.377162][ T9748] RIP: 0033:0x44af59 [ 87.381050][ T9748] Code: e8 2c ce 02 00 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 ab cc fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 87.400651][ T9748] RSP: 002b:00007f6eec84bda8 EFLAGS: 00000246 ORIG_RAX: 000000000000010e [ 87.409046][ T9748] RAX: ffffffffffffffda RBX: 00000000006dcc88 RCX: 000000000044af59 [ 87.417009][ T9748] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000040 [ 87.425094][ T9748] RBP: 00000000006dcc80 R08: 0000000020000200 R09: 0000000000000000 [ 87.433057][ T9748] R10: 0000000020000040 R11: 0000000000000246 R12: 00000000006dcc8c [ 87.441015][ T9748] R13: 00007fffa2f4373f R14: 00007f6eec84c9c0 R15: 0000000000000007 [ 87.448973][ T9748] Modules linked in: [ 87.463916][ T9748] ---[ end trace b125e60b63a3d289 ]--- [ 87.469488][ T9748] RIP: 0010:pipe_poll+0x37f/0x400 [ 87.474689][ T9748] Code: ff 85 db 75 09 e8 b1 ee b5 ff 41 83 ce 08 e8 a8 ee b5 ff 44 89 f0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 91 ee b5 ff <0f> 0b e8 ca 40 f3 ff e9 ed fc ff ff e8 c0 40 f3 ff e9 b3 fd ff ff [ 87.494444][ T9748] RSP: 0018:ffff8880a7d97698 EFLAGS: 00010293 [ 87.500560][ T9748] RAX: ffff88808da96300 RBX: ffff8880a116b000 RCX: ffffffff81bef79a [ 87.508582][ T9748] RDX: 0000000000000000 RSI: ffffffff81bef9bf RDI: 0000000000000004 [ 87.516656][ T9748] RBP: ffff8880a7d976d0 R08: ffff88808da96300 R09: ffff88808da96b90 [ 87.526913][ T9748] R10: fffffbfff146e190 R11: ffffffff8a370c87 R12: ffff88809b986d40 [ 87.536943][ T9748] R13: 00000000ffffffff R14: 0000000000000001 R15: 000000000000071b [ 87.546539][ T9748] FS: 00007f6eec84c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 87.556440][ T9748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.563138][ T9748] CR2: 0000000020e00000 CR3: 0000000093a9e000 CR4: 00000000001406e0 [ 87.571237][ T9748] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.579391][ T9748] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.587433][ T9748] Kernel panic - not syncing: Fatal exception [ 87.594862][ T9748] Kernel Offset: disabled [ 87.599184][ T9748] Rebooting in 86400 seconds..